美國國家海洋暨大氣總署-太空氣象預測中心: 警報、觀測與警告
美國國家海洋及大氣管理局太空天氣預報中心(NOAA SWPC) 是美國的官方太空天氣政府機構，提供有關太空天氣干擾的警報、監視和警告。以下是由NOAA SWPC發布的最新太空天氣警報、監視和警告。
星期六, 13 12月 2025
14:56 UTC
Space Weather Message Code: WARK04
Serial Number: 5184
Issue Time: 2025 Dec 13 1456 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5183
Valid From: 2025 Dec 10 2040 UTC
Now Valid Until: 2025 Dec 14 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
11:06 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1457
Issue Time: 2025 Dec 13 1106 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 13 1049 UTC
Estimated Velocity: 778 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
03:02 UTC
Space Weather Message Code: ALTK05
Serial Number: 1930
Issue Time: 2025 Dec 13 0302 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 13 0259 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期五, 12 12月 2025
22:50 UTC
Space Weather Message Code: ALTK05
Serial Number: 1929
Issue Time: 2025 Dec 12 2250 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 12 2248 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:37 UTC
Space Weather Message Code: WARK04
Serial Number: 5183
Issue Time: 2025 Dec 12 2237 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5182
Valid From: 2025 Dec 10 2040 UTC
Now Valid Until: 2025 Dec 13 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
19:43 UTC
Space Weather Message Code: ALTK05
Serial Number: 1928
Issue Time: 2025 Dec 12 1943 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 12 1942 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
19:42 UTC
Space Weather Message Code: WARK05
Serial Number: 2155
Issue Time: 2025 Dec 12 1942 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Dec 12 1940 UTC
Valid To: 2025 Dec 13 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
10:55 UTC
Space Weather Message Code: WARK04
Serial Number: 5182
Issue Time: 2025 Dec 12 1055 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5181
Valid From: 2025 Dec 10 2040 UTC
Now Valid Until: 2025 Dec 12 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:58 UTC
Space Weather Message Code: ALTTP4
Serial Number: 700
Issue Time: 2025 Dec 12 0558 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Dec 12 0527 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
05:55 UTC
Space Weather Message Code: WARK05
Serial Number: 2154
Issue Time: 2025 Dec 12 0555 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2153
Valid From: 2025 Dec 11 1900 UTC
Now Valid Until: 2025 Dec 12 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:28 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1456
Issue Time: 2025 Dec 12 0528 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 12 0508 UTC
Estimated Velocity: 410 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
星期四, 11 12月 2025
23:39 UTC
Space Weather Message Code: WARK04
Serial Number: 5181
Issue Time: 2025 Dec 11 2339 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5180
Valid From: 2025 Dec 10 2040 UTC
Now Valid Until: 2025 Dec 12 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
23:39 UTC
Space Weather Message Code: WARK05
Serial Number: 2153
Issue Time: 2025 Dec 11 2339 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2152
Valid From: 2025 Dec 11 1900 UTC
Now Valid Until: 2025 Dec 12 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:59 UTC
Space Weather Message Code: ALTK05
Serial Number: 1927
Issue Time: 2025 Dec 11 2059 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 11 1914 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
19:19 UTC
Space Weather Message Code: WARK05
Serial Number: 2152
Issue Time: 2025 Dec 11 1919 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Dec 11 1900 UTC
Valid To: 2025 Dec 12 0000 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
03:39 UTC
Space Weather Message Code: WARK05
Serial Number: 2151
Issue Time: 2025 Dec 11 0339 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2150
Valid From: 2025 Dec 10 2115 UTC
Now Valid Until: 2025 Dec 11 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
03:37 UTC
Space Weather Message Code: WARK04
Serial Number: 5180
Issue Time: 2025 Dec 11 0337 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5179
Valid From: 2025 Dec 10 2040 UTC
Now Valid Until: 2025 Dec 11 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:55 UTC
Space Weather Message Code: WARK06
Serial Number: 629
Issue Time: 2025 Dec 11 0255 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 628
Valid From: 2025 Dec 10 2200 UTC
Now Valid Until: 2025 Dec 11 0600 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
02:52 UTC
Space Weather Message Code: ALTK06
Serial Number: 679
Issue Time: 2025 Dec 11 0252 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Dec 11 0242 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
00:16 UTC
Space Weather Message Code: SUM10R
Serial Number: 895
Issue Time: 2025 Dec 11 0016 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Dec 10 2206 UTC
Maximum Time: 2025 Dec 10 2206 UTC
End Time: 2025 Dec 10 2208 UTC
Duration: 2 minutes
Peak Flux: 520 sfu
Latest Penticton Noon Flux: 168 sfu
Comment: This summary contains the corrected peak flux of 520 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
00:14 UTC
Space Weather Message Code: SUM10R
Serial Number: 894
Issue Time: 2025 Dec 11 0014 UTC
CANCEL SUMMARY: 10cm Radio Burst
Cancel Serial Number: 893
Original Issue Time: 2025 Dec 10 2226 UTC
Comment: the total flux was 520 sfu instead of the reported one.
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
星期三, 10 12月 2025
22:44 UTC
Space Weather Message Code: ALTK06
Serial Number: 678
Issue Time: 2025 Dec 10 2244 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Dec 10 2243 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
22:29 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1455
Issue Time: 2025 Dec 10 2229 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 10 2208 UTC
Estimated Velocity: 849 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
22:26 UTC
Space Weather Message Code: SUM10R
Serial Number: 893
Issue Time: 2025 Dec 10 2226 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Dec 10 2206 UTC
Maximum Time: 2025 Dec 10 2206 UTC
End Time: 2025 Dec 10 2208 UTC
Duration: 2 minutes
Peak Flux: 2695 sfu
Latest Penticton Noon Flux: 168 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
22:13 UTC
Space Weather Message Code: ALTK05
Serial Number: 1926
Issue Time: 2025 Dec 10 2213 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 10 2207 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:07 UTC
Space Weather Message Code: WARK05
Serial Number: 2150
Issue Time: 2025 Dec 10 2207 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2149
Valid From: 2025 Dec 10 2115 UTC
Now Valid Until: 2025 Dec 11 0600 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:06 UTC
Space Weather Message Code: WARK04
Serial Number: 5179
Issue Time: 2025 Dec 10 2206 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5178
Valid From: 2025 Dec 10 2040 UTC
Now Valid Until: 2025 Dec 11 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:57 UTC
Space Weather Message Code: WARK06
Serial Number: 628
Issue Time: 2025 Dec 10 2157 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Dec 10 2200 UTC
Valid To: 2025 Dec 11 0300 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
21:20 UTC
Space Weather Message Code: ALTK04
Serial Number: 2615
Issue Time: 2025 Dec 10 2120 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Dec 10 2111 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:17 UTC
Space Weather Message Code: WARK05
Serial Number: 2149
Issue Time: 2025 Dec 10 2117 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Dec 10 2115 UTC
Valid To: 2025 Dec 11 0300 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:40 UTC
Space Weather Message Code: WARK04
Serial Number: 5178
Issue Time: 2025 Dec 10 2040 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Dec 10 2040 UTC
Valid To: 2025 Dec 11 0300 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
07:08 UTC
Space Weather Message Code: WARK04
Serial Number: 5177
Issue Time: 2025 Dec 10 0708 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Dec 10 0707 UTC
Valid To: 2025 Dec 10 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期二, 9 12月 2025
21:03 UTC
Space Weather Message Code: WATA50
Serial Number: 95
Issue Time: 2025 Dec 09 2103 UTC
CANCEL WATCH: Geomagnetic Storm Category G3 Predicted
Cancel Serial Number: 94
Original Issue Time: 2025 Dec 07 0443 UTC
Comment: Enhancement from anticipated CME did not occur
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
12:10 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3575
Issue Time: 2025 Dec 09 1210 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3574
Begin Time: 2025 Dec 05 1530 UTC
Yesterday Maximum 2MeV Flux: 1040 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
02:56 UTC
Space Weather Message Code: ALTTP4
Serial Number: 699
Issue Time: 2025 Dec 09 0256 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Dec 09 0220 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
02:15 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1454
Issue Time: 2025 Dec 09 0215 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 09 0152 UTC
Estimated Velocity: 759 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
02:04 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1453
Issue Time: 2025 Dec 09 0204 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 09 0141 UTC
Estimated Velocity: 1825 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
星期一, 8 12月 2025
12:37 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3574
Issue Time: 2025 Dec 08 1237 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3573
Begin Time: 2025 Dec 05 1530 UTC
Yesterday Maximum 2MeV Flux: 1453 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
05:13 UTC
Space Weather Message Code: SUMX01
Serial Number: 204
Issue Time: 2025 Dec 08 0513 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Dec 08 0449 UTC
Maximum Time: 2025 Dec 08 0501 UTC
End Time: 2025 Dec 08 0504 UTC
X-ray Class: X1.1
Location: S18W55
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
05:02 UTC
Space Weather Message Code: ALTXMF
Serial Number: 505
Issue Time: 2025 Dec 08 0502 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Dec 08 0500 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
00:46 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1452
Issue Time: 2025 Dec 08 0046 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 08 0017 UTC
Estimated Velocity: 317 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
星期日, 7 12月 2025
21:39 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3573
Issue Time: 2025 Dec 07 2139 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3572
Begin Time: 2025 Dec 05 1530 UTC
Yesterday Maximum 2MeV Flux: 2135 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
06:01 UTC
Space Weather Message Code: ALTK04
Serial Number: 2614
Issue Time: 2025 Dec 07 0601 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Dec 07 0559 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
04:43 UTC
Space Weather Message Code: WATA50
Serial Number: 94
Issue Time: 2025 Dec 07 0443 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Dec 08: G1 (Minor) Dec 09: G3 (Strong) Dec 10: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Watches for G3 (Strong) on 09 Dec and G1 (Minor) on 10 Dec are in anticipation of CME arrival from the M8 flare at 06/2039 UTC.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
04:23 UTC
Space Weather Message Code: WARK04
Serial Number: 5176
Issue Time: 2025 Dec 07 0423 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Dec 07 0422 UTC
Valid To: 2025 Dec 07 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期六, 6 12月 2025
21:07 UTC
Space Weather Message Code: ALTTP4
Serial Number: 698
Issue Time: 2025 Dec 06 2107 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Dec 06 2057 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
20:57 UTC
Space Weather Message Code: SUMXM5
Serial Number: 301
Issue Time: 2025 Dec 06 2057 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Dec 06 2029 UTC
Maximum Time: 2025 Dec 06 2039 UTC
End Time: 2025 Dec 06 2049 UTC
X-ray Class: M8.1
Optical Class: 2b
Location: N20E01
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
20:54 UTC
Space Weather Message Code: SUM10R
Serial Number: 892
Issue Time: 2025 Dec 06 2054 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Dec 06 2035 UTC
Maximum Time: 2025 Dec 06 2036 UTC
End Time: 2025 Dec 06 2039 UTC
Duration: 4 minutes
Peak Flux: 1100 sfu
Latest Penticton Noon Flux: 200 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
20:51 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1451
Issue Time: 2025 Dec 06 2051 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 06 2040 UTC
Estimated Velocity: 1143 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
20:41 UTC
Space Weather Message Code: ALTXMF
Serial Number: 504
Issue Time: 2025 Dec 06 2041 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Dec 06 2037 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
12:34 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3572
Issue Time: 2025 Dec 06 1234 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3571
Begin Time: 2025 Dec 05 1530 UTC
Yesterday Maximum 2MeV Flux: 1426 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
08:52 UTC
Space Weather Message Code: WARK04
Serial Number: 5175
Issue Time: 2025 Dec 06 0852 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5174
Valid From: 2025 Dec 06 0205 UTC
Now Valid Until: 2025 Dec 06 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:37 UTC
Space Weather Message Code: WARK05
Serial Number: 2148
Issue Time: 2025 Dec 06 0837 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Dec 06 0836 UTC
Valid To: 2025 Dec 06 2359 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02:58 UTC
Space Weather Message Code: ALTK04
Serial Number: 2613
Issue Time: 2025 Dec 06 0258 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Dec 06 0256 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:06 UTC
Space Weather Message Code: WARK04
Serial Number: 5174
Issue Time: 2025 Dec 06 0206 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Dec 06 0205 UTC
Valid To: 2025 Dec 06 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期五, 5 12月 2025
19:22 UTC
Space Weather Message Code: WATA20
Serial Number: 1080
Issue Time: 2025 Dec 05 1922 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Dec 06: None (Below G1) Dec 07: G1 (Minor) Dec 08: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
15:45 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3571
Issue Time: 2025 Dec 05 1545 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Dec 05 1530 UTC
Station: GOES-19
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
星期四, 4 12月 2025
21:29 UTC
Space Weather Message Code: WATA20
Serial Number: 1079
Issue Time: 2025 Dec 04 2129 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Dec 05: None (Below G1) Dec 06: None (Below G1) Dec 07: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
13:21 UTC
Space Weather Message Code: WARK04
Serial Number: 5173
Issue Time: 2025 Dec 04 1321 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5172
Valid From: 2025 Dec 03 1022 UTC
Now Valid Until: 2025 Dec 05 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
11:58 UTC
Space Weather Message Code: WARK05
Serial Number: 2147
Issue Time: 2025 Dec 04 1158 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2146
Valid From: 2025 Dec 03 1425 UTC
Now Valid Until: 2025 Dec 05 0000 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
09:00 UTC
Space Weather Message Code: ALTTP4
Serial Number: 697
Issue Time: 2025 Dec 04 0900 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Dec 04 0832 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
08:55 UTC
Space Weather Message Code: ALTK05
Serial Number: 1925
Issue Time: 2025 Dec 04 0855 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 04 0852 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
04:53 UTC
Space Weather Message Code: ALTK05
Serial Number: 1924
Issue Time: 2025 Dec 04 0453 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 04 0445 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
03:08 UTC
Space Weather Message Code: SUMXM5
Serial Number: 300
Issue Time: 2025 Dec 04 0308 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Dec 04 0236 UTC
Maximum Time: 2025 Dec 04 0250 UTC
End Time: 2025 Dec 04 0259 UTC
X-ray Class: M6.0
Optical Class: na
Location: N07E50
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
03:03 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1450
Issue Time: 2025 Dec 04 0303 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 04 0246 UTC
Estimated Velocity: 345 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
02:53 UTC
Space Weather Message Code: ALTK05
Serial Number: 1923
Issue Time: 2025 Dec 04 0253 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 04 0247 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02:50 UTC
Space Weather Message Code: ALTXMF
Serial Number: 503
Issue Time: 2025 Dec 04 0250 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Dec 04 0248 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
星期三, 3 12月 2025
23:56 UTC
Space Weather Message Code: WARK05
Serial Number: 2146
Issue Time: 2025 Dec 03 2356 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2145
Valid From: 2025 Dec 03 1425 UTC
Now Valid Until: 2025 Dec 04 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23:55 UTC
Space Weather Message Code: WARK04
Serial Number: 5172
Issue Time: 2025 Dec 03 2355 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5171
Valid From: 2025 Dec 03 1022 UTC
Now Valid Until: 2025 Dec 04 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
22:38 UTC
Space Weather Message Code: ALTK05
Serial Number: 1922
Issue Time: 2025 Dec 03 2238 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 03 2215 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:48 UTC
Space Weather Message Code: ALTK07
Serial Number: 200
Issue Time: 2025 Dec 03 2048 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2025 Dec 03 2031 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
20:27 UTC
Space Weather Message Code: WARK07
Serial Number: 139
Issue Time: 2025 Dec 03 2027 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2025 Dec 03 2025 UTC
Valid To: 2025 Dec 03 2359 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
19:58 UTC
Space Weather Message Code: ALTK06
Serial Number: 677
Issue Time: 2025 Dec 03 1958 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Dec 03 1959 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
19:53 UTC
Space Weather Message Code: WARK06
Serial Number: 627
Issue Time: 2025 Dec 03 1953 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Dec 03 1952 UTC
Valid To: 2025 Dec 03 2359 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
19:41 UTC
Space Weather Message Code: ALTK05
Serial Number: 1921
Issue Time: 2025 Dec 03 1941 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 03 1941 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:52 UTC
Space Weather Message Code: ALTK05
Serial Number: 1920
Issue Time: 2025 Dec 03 1452 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Dec 03 1443 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:25 UTC
Space Weather Message Code: WARK05
Serial Number: 2145
Issue Time: 2025 Dec 03 1425 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Dec 03 1425 UTC
Valid To: 2025 Dec 04 0000 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:23 UTC
Space Weather Message Code: ALTK04
Serial Number: 2612
Issue Time: 2025 Dec 03 1423 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Dec 03 1419 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:22 UTC
Space Weather Message Code: WARK04
Serial Number: 5171
Issue Time: 2025 Dec 03 1022 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Dec 03 1022 UTC
Valid To: 2025 Dec 03 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
07:06 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3570
Issue Time: 2025 Dec 03 0706 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3569
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 8535 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
星期二, 2 12月 2025
05:01 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3569
Issue Time: 2025 Dec 02 0501 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3568
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 8521 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
星期一, 1 12月 2025
21:19 UTC
Space Weather Message Code: WATA30
Serial Number: 262
Issue Time: 2025 Dec 01 2119 UTC
WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Dec 02: None (Below G1) Dec 03: G2 (Moderate) Dec 04: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: There is a chance geomagnetic storming could reach G3 (Moderate) levels late 03 Dec, into early 04 Dec.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
04:59 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3568
Issue Time: 2025 Dec 01 0459 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3567
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 8310 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
04:03 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1449
Issue Time: 2025 Dec 01 0403 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 01 0319 UTC
Estimated Velocity: 490 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
03:14 UTC
Space Weather Message Code: SUMX01
Serial Number: 203
Issue Time: 2025 Dec 01 0314 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Dec 01 0227 UTC
Maximum Time: 2025 Dec 01 0249 UTC
End Time: 2025 Dec 01 0305 UTC
X-ray Class: X1.9
Location: N22E85
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
02:56 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1448
Issue Time: 2025 Dec 01 0256 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Dec 01 0243 UTC
Estimated Velocity: 988 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
02:41 UTC
Space Weather Message Code: ALTXMF
Serial Number: 502
Issue Time: 2025 Dec 01 0241 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Dec 01 0240 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
01:01 UTC
Space Weather Message Code: ALTK04
Serial Number: 2611
Issue Time: 2025 Dec 01 0101 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Dec 01 0100 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
00:54 UTC
Space Weather Message Code: WARK04
Serial Number: 5170
Issue Time: 2025 Dec 01 0054 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Dec 01 0053 UTC
Valid To: 2025 Dec 01 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期日, 30 11月 2025
04:59 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3567
Issue Time: 2025 Nov 30 0459 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3566
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 23005 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
星期六, 29 11月 2025
23:55 UTC
Space Weather Message Code: WARK04
Serial Number: 5169
Issue Time: 2025 Nov 29 2355 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5168
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 30 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
20:57 UTC
Space Weather Message Code: SUM10R
Serial Number: 891
Issue Time: 2025 Nov 29 2057 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Nov 29 2011 UTC
Maximum Time: 2025 Nov 29 2012 UTC
End Time: 2025 Nov 29 2013 UTC
Duration: 2 minutes
Peak Flux: 170 sfu
Latest Penticton Noon Flux: 160 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
11:58 UTC
Space Weather Message Code: WARK04
Serial Number: 5168
Issue Time: 2025 Nov 29 1158 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5167
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 29 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:00 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3566
Issue Time: 2025 Nov 29 0500 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3565
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 14759 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
02:00 UTC
Space Weather Message Code: SUM10R
Serial Number: 890
Issue Time: 2025 Nov 29 0200 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Nov 29 0143 UTC
Maximum Time: 2025 Nov 29 0143 UTC
End Time: 2025 Nov 29 0143 UTC
Duration: 1 minutes
Peak Flux: 140 sfu
Latest Penticton Noon Flux: 138 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
星期五, 28 11月 2025
22:47 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1447
Issue Time: 2025 Nov 28 2247 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Nov 28 2223 UTC
Estimated Velocity: 828 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
22:46 UTC
Space Weather Message Code: SUMXM5
Serial Number: 299
Issue Time: 2025 Nov 28 2246 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Nov 28 2211 UTC
Maximum Time: 2025 Nov 28 2222 UTC
End Time: 2025 Nov 28 2224 UTC
X-ray Class: M5.9
Location: S16E80
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
22:35 UTC
Space Weather Message Code: SUM10R
Serial Number: 889
Issue Time: 2025 Nov 28 2235 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Nov 28 2220 UTC
Maximum Time: 2025 Nov 28 2221 UTC
End Time: 2025 Nov 28 2221 UTC
Duration: 1 minutes
Peak Flux: 240 sfu
Latest Penticton Noon Flux: 120 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
22:24 UTC
Space Weather Message Code: ALTXMF
Serial Number: 501
Issue Time: 2025 Nov 28 2224 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Nov 28 2222 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
17:20 UTC
Space Weather Message Code: WARK04
Serial Number: 5167
Issue Time: 2025 Nov 28 1720 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5166
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 29 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:58 UTC
Space Weather Message Code: WARK04
Serial Number: 5166
Issue Time: 2025 Nov 28 0858 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5165
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 28 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
04:59 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3565
Issue Time: 2025 Nov 28 0459 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3564
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 8297 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
星期四, 27 11月 2025
21:18 UTC
Space Weather Message Code: WARK04
Serial Number: 5165
Issue Time: 2025 Nov 27 2118 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5164
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 28 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:11 UTC
Space Weather Message Code: ALTK05
Serial Number: 1919
Issue Time: 2025 Nov 27 2111 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Nov 27 2055 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
21:09 UTC
Space Weather Message Code: WARK05
Serial Number: 2144
Issue Time: 2025 Nov 27 2109 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2143
Valid From: 2025 Nov 27 1108 UTC
Now Valid Until: 2025 Nov 28 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
12:05 UTC
Space Weather Message Code: ALTK05
Serial Number: 1918
Issue Time: 2025 Nov 27 1205 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Nov 27 1159 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:10 UTC
Space Weather Message Code: WARK05
Serial Number: 2143
Issue Time: 2025 Nov 27 1110 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Nov 27 1108 UTC
Valid To: 2025 Nov 27 1800 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:09 UTC
Space Weather Message Code: WARK04
Serial Number: 5164
Issue Time: 2025 Nov 27 1109 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5163
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 27 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:38 UTC
Space Weather Message Code: WARK04
Serial Number: 5163
Issue Time: 2025 Nov 27 1038 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5162
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 27 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:00 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3564
Issue Time: 2025 Nov 27 0500 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3563
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 10064 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
星期三, 26 11月 2025
23:22 UTC
Space Weather Message Code: WARK04
Serial Number: 5162
Issue Time: 2025 Nov 26 2322 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5161
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 27 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:45 UTC
Space Weather Message Code: WARK04
Serial Number: 5161
Issue Time: 2025 Nov 26 1045 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5160
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 26 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
05:01 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3563
Issue Time: 2025 Nov 26 0501 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3562
Begin Time: 2025 Nov 25 1450 UTC
Yesterday Maximum 2MeV Flux: 3722 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
00:39 UTC
Space Weather Message Code: WATA20
Serial Number: 1078
Issue Time: 2025 Nov 26 0039 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Nov 26: G1 (Minor) Nov 27: G1 (Minor) Nov 28: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期二, 25 11月 2025
23:54 UTC
Space Weather Message Code: WARK04
Serial Number: 5160
Issue Time: 2025 Nov 25 2354 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5159
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 26 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
20:53 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1446
Issue Time: 2025 Nov 25 2053 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Nov 25 1950 UTC
Estimated Velocity: 1050 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
14:55 UTC
Space Weather Message Code: WARK05
Serial Number: 2142
Issue Time: 2025 Nov 25 1455 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2141
Valid From: 2025 Nov 25 0211 UTC
Now Valid Until: 2025 Nov 25 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:51 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3562
Issue Time: 2025 Nov 25 1451 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Nov 25 1450 UTC
Station: GOES19
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
08:47 UTC
Space Weather Message Code: ALTK05
Serial Number: 1917
Issue Time: 2025 Nov 25 0847 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Nov 25 0845 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08:24 UTC
Space Weather Message Code: WARK05
Serial Number: 2141
Issue Time: 2025 Nov 25 0824 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2140
Valid From: 2025 Nov 25 0211 UTC
Now Valid Until: 2025 Nov 25 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08:23 UTC
Space Weather Message Code: WARK04
Serial Number: 5159
Issue Time: 2025 Nov 25 0823 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5158
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 25 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:24 UTC
Space Weather Message Code: ALTK05
Serial Number: 1916
Issue Time: 2025 Nov 25 0224 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Nov 25 0216 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02:11 UTC
Space Weather Message Code: WARK05
Serial Number: 2140
Issue Time: 2025 Nov 25 0211 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Nov 25 0211 UTC
Valid To: 2025 Nov 25 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期一, 24 11月 2025
23:54 UTC
Space Weather Message Code: WARK04
Serial Number: 5158
Issue Time: 2025 Nov 24 2354 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5157
Valid From: 2025 Nov 24 0226 UTC
Now Valid Until: 2025 Nov 25 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
14:07 UTC
Space Weather Message Code: ALTK05
Serial Number: 1915
Issue Time: 2025 Nov 24 1407 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Nov 24 1400 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
13:27 UTC
Space Weather Message Code: WARK05
Serial Number: 2139
Issue Time: 2025 Nov 24 1327 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Nov 24 1330 UTC
Valid To: 2025 Nov 24 2100 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:59 UTC
Space Weather Message Code: ALTK04
Serial Number: 2610
Issue Time: 2025 Nov 24 1159 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Nov 24 1159 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:27 UTC
Space Weather Message Code: WARK04
Serial Number: 5157
Issue Time: 2025 Nov 24 0227 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Nov 24 0226 UTC
Valid To: 2025 Nov 24 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期日, 23 11月 2025
18:01 UTC
Space Weather Message Code: ALTK04
Serial Number: 2609
Issue Time: 2025 Nov 23 1801 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Nov 23 1759 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:08 UTC
Space Weather Message Code: WARK04
Serial Number: 5156
Issue Time: 2025 Nov 23 1708 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Nov 23 1708 UTC
Valid To: 2025 Nov 23 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
16:50 UTC
Space Weather Message Code: WATA20
Serial Number: 1077
Issue Time: 2025 Nov 23 1650 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Nov 24: None (Below G1) Nov 25: G1 (Minor) Nov 26: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
星期四, 20 11月 2025
23:29 UTC
Space Weather Message Code: WARK04
Serial Number: 5155
Issue Time: 2025 Nov 20 2329 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Nov 20 2327 UTC
Valid To: 2025 Nov 21 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
16:54 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1445
Issue Time: 2025 Nov 20 1654 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Nov 20 1459 UTC
Estimated Velocity: 1196 km/s
Comment: end time: 1503 UTC.
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
10:46 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3561
Issue Time: 2025 Nov 20 1046 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3560
Begin Time: 2025 Nov 19 1310 UTC
Yesterday Maximum 2MeV Flux: 1438 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
00:59 UTC
Space Weather Message Code: ALTTP4
Serial Number: 696
Issue Time: 2025 Nov 20 0059 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Nov 20 0023 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
星期三, 19 11月 2025
22:35 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1444
Issue Time: 2025 Nov 19 2235 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Nov 19 2215 UTC
Estimated Velocity: 695 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
13:41 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3560
Issue Time: 2025 Nov 19 1341 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Nov 19 1310 UTC
Station: GOES19
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
星期一, 17 11月 2025
23:55 UTC
Space Weather Message Code: WARK04
Serial Number: 5154
Issue Time: 2025 Nov 17 2355 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5153
Valid From: 2025 Nov 15 2000 UTC
Now Valid Until: 2025 Nov 18 0600 UTC
Warning Condition: Persistence
Comment: WC
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:47 UTC
Space Weather Message Code: WARK04
Serial Number: 5153
Issue Time: 2025 Nov 17 1047 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5152
Valid From: 2025 Nov 15 2000 UTC
Now Valid Until: 2025 Nov 17 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期日, 16 11月 2025
22:17 UTC
Space Weather Message Code: WARK04
Serial Number: 5152
Issue Time: 2025 Nov 16 2217 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5151
Valid From: 2025 Nov 15 2000 UTC
Now Valid Until: 2025 Nov 17 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
03:03 UTC
Space Weather Message Code: ALTK04
Serial Number: 2608
Issue Time: 2025 Nov 16 0303 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Nov 16 0259 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:19 UTC
Space Weather Message Code: WARK04
Serial Number: 5151
Issue Time: 2025 Nov 16 0219 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5150
Valid From: 2025 Nov 15 2000 UTC
Now Valid Until: 2025 Nov 16 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期六, 15 11月 2025
20:02 UTC
Space Weather Message Code: WARK04
Serial Number: 5150
Issue Time: 2025 Nov 15 2002 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Nov 15 2000 UTC
Valid To: 2025 Nov 16 0300 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
星期五, 14 11月 2025
23:38 UTC
Space Weather Message Code: SUMPX1
Serial Number: 126
Issue Time: 2025 Nov 14 2338 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2025 Nov 14 0920 UTC
Maximum Time: 2025 Nov 14 0950 UTC
End Time: 2025 Nov 14 1325 UTC
Maximum 10MeV Flux: 16 pfu
NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
17:50 UTC
Space Weather Message Code: WATA20
Serial Number: 1076
Issue Time: 2025 Nov 14 1750 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Nov 15: None (Below G1) Nov 16: G1 (Minor) Nov 17: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
12:09 UTC
Space Weather Message Code: SUM10R
Serial Number: 888
Issue Time: 2025 Nov 14 1209 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Nov 14 0822 UTC
Maximum Time: 2025 Nov 14 0825 UTC
End Time: 2025 Nov 14 0841 UTC
Duration: 19 minutes
Peak Flux: 1100 sfu
Latest Penticton Noon Flux: 156 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
11:45 UTC
Space Weather Message Code: ALTTP4
Serial Number: 695
Issue Time: 2025 Nov 14 1145 UTC
ALERT: Type IV Radio Emission
Begin Time: 2025 Nov 14 0837 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
09:37 UTC
Space Weather Message Code: ALTPX1
Serial Number: 361
Issue Time: 2025 Nov 14 0937 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2025 Nov 14 0920 UTC
NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
09:17 UTC
Space Weather Message Code: WARPX1
Serial Number: 616
Issue Time: 2025 Nov 14 0917 UTC
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2025 Nov 14 0917 UTC
Valid To: 2025 Nov 14 2359 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
09:08 UTC
Space Weather Message Code: SUMX01
Serial Number: 202
Issue Time: 2025 Nov 14 0908 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Nov 14 0744 UTC
Maximum Time: 2025 Nov 14 0830 UTC
End Time: 2025 Nov 14 0840 UTC
X-ray Class: X4
Optical Class: na
Location: N24W68
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
08:41 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1443
Issue Time: 2025 Nov 14 0841 UTC
ALERT: Type II Radio Emission
Begin Time: 2025 Nov 14 0813 UTC
Estimated Velocity: 1525 km/s
Comment: From San Vito
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
08:26 UTC
Space Weather Message Code: ALTXMF
Serial Number: 500
Issue Time: 2025 Nov 14 0826 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Nov 14 0823 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
最新新聞
M8.1 solar flare with earth-directed CME
X1.9 solar flare, Coronal hole faces Earth
X4.0 solar flare
最新論壇訊息
請支持 SpaceWeatherLive.com!
很多網友來到 SpaceWeatherLive 追蹤太陽活動或極光觀測機會，但隨著流量增加，維持伺服器運作的成本也隨之越高。若您喜歡 SpaceWeatherLive 並想支持這個計畫，可選擇訂閱無廣告版本，或考慮捐款。有了您的幫助，我們才能讓 SpaceWeatherLive 持續運作！
太空天氣大事紀
| 上一個 X-閃焰 | 08/12/2025 | X1.1 |
| 上一個 M-閃焰 | 12/12/2025 | M1.1 |
| 上一個 地球磁爆 | 12/12/2025 | Kp5 (G1) |
| 無黑子天數 | |
|---|---|
| 上一個無黑子日 | 08/06/2022 |
| 黑子數月平均 | |
|---|---|
| 11月 2025 | 91.8 -22.8 |
| 12月 2025 | 150 +58.2 |
| 過去 30 天內 | 108.8 +10.3 |