Viewing archive of Sunday, 7 December 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Dec 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 341 Issued at 2200Z on 07 Dec 2025IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 7 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(08 Dec, 09 Dec, 10 Dec).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 732 km/s at 06/2106Z. Total IMF reached 9
nT at 07/1318Z. The maximum southward component of Bz reached -5 nT at
07/0216Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1452 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on days one and three (08 Dec, 10
Dec) and minor storm to severe storm levels on day two (09 Dec). Protons
have a slight chance of crossing threshold on days one, two, and three
(08 Dec, 09 Dec, 10 Dec).
III. Event Probabilities 08 Dec to 10 Dec
| Class M | 65% | 65% | 65% |
| Class X | 15% | 15% | 15% |
| Proton | 15% | 15% | 15% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Dec 194 Predicted 08 Dec-10 Dec 190/190/185 90 Day Mean 07 Dec 148
V. Geomagnetic A Indices
Observed Afr/Ap 06 Dec 015/016 Estimated Afr/Ap 07 Dec 011/013 Predicted Afr/Ap 08 Dec-10 Dec 013/018-048/070-022/033
VI. Geomagnetic Activity Probabilities 08 Dec to 10 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 35% |
| Minor storm | 30% | 30% | 35% |
| Major-severe storm | 20% | 50% | 20% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 20% | 15% | 20% |
| Major-severe storm | 70% | 85% | 75% |
All times in UTC
Latest news
Monday, 30 March 2026
X1.5 solar flare
Tuesday, 17 March 2026
M2.7 solar flare, CME arrival possible
Sunday, 1 February 2026
Complex sunspot region 4366
Latest forum messages
AR4409 159Comet C/2026 A1 (MAPS) for the southern hemisphere 49AR4405 242Current Farside Activity 438Incoming & Unnumbered Active Regions 257
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 | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M1.3 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 133.3 +47.4 |
| Last 30 days | 96.1 +32 |
This day in history*
Aurora on this day in history
No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation