Viewing archive of Saturday, 18 March 2000
Geophysical report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Solar and Geophysical Activity Summary 2000 Mar 18 0245 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 078 Issued at 0245Z on 18 MAR 2000 This report is compiled from data received at SWO on 17 MARA. Energetic Events
Begin Max End Rgn Loc Xray Op 245MHz 10cm Sweep 0024 0028 0035 100 0323 0323 0324 120 0453 0458 0506 C5.8 560 0521 0522 0523 260 0625 0625 0625 130 1108 1125 1134 8906 S14W47 M1.1 SF 96 200
B. Proton Events
None
C. Geomagnetic Activity Summary
ACTIVITY WAS AT QUIET TO (BRIEFLY)
UNSETTLED LEVELS.
D. Stratwarm
STRATWARM ALERT/FRIDAY/STRATWARM EXISTS.
THE INTENSE WARMING, CENTERED OVER THE KARA SEA
AT 10 HPA, SLOWLY WEAKENING. TEMPERATURE GRADIENT
REVERSED BETWEEN 60N AND THE POLE IN THE MIDDLE
AND UPPER STRATOSPHERE. MEAN ZONAL WIND AT 60N
DECREASING AND IS FROM EAST AT 1 HPA.
E. Daily Indices: (real-time preliminary/estimated values)
10 CM 192 SSN 152 AFR/AP 005/006 X-RAY BACKGROUND C1.4 DAILY PROTON FLUENCE (FLUX ACCUMULATION OVER 24 HRS) GT 1 MEV 5.3E+05 GT 10 MEV 1.3E+04 P/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) DAILY ELECTRON FLUENCE GT 2 MEV 5.40E+06 E/(CM2-STER-DAY) (GOES-8 SATELLITE SYNCHRONOUS ORBIT W75 DEGREES) 3 HOUR K-INDICES: BOULDER 1 1 2 3 2 2 1 0 PLANETARY 2 1 2 2 2 2 2 2
F. Comments
None
All times in UTC
Latest news
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Tuesday, 11 November 2025
X5.1 solar flare, G4 geomagnetic storm watch
Latest forum messages
Incoming & Unnumbered Active Regions 16AR4294 / 4296 / 4298 31250 mhz F2 75AR 4299 24Current Farside Activity 236
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |