Viewing archive of Saturday, 8 November 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Nov 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 312 Issued at 2200Z on 08 Nov 2025IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 6 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
(09 Nov, 10 Nov, 11 Nov).
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic
field has been at unsettled to major storm levels for the past 24 hours.
Solar wind speed reached a peak of 731 km/s at 07/2204Z. Total IMF
reached 12 nT at 07/2250Z. The maximum southward component of Bz reached
-9 nT at 08/0037Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 1122 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (09 Nov), unsettled to
major storm levels on day two (10 Nov) and quiet to active levels on day
three (11 Nov). Protons have a slight chance of crossing threshold on
days one, two, and three (09 Nov, 10 Nov, 11 Nov).
III. Event Probabilities 09 Nov to 11 Nov
| Class M | 70% | 70% | 70% |
| Class X | 20% | 20% | 20% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Nov 172 Predicted 09 Nov-11 Nov 172/170/175 90 Day Mean 08 Nov 151
V. Geomagnetic A Indices
Observed Afr/Ap 07 Nov 020/032 Estimated Afr/Ap 08 Nov 032/049 Predicted Afr/Ap 09 Nov-11 Nov 015/018-022/030-013/015
VI. Geomagnetic Activity Probabilities 09 Nov to 11 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 30% | 30% |
| Minor storm | 30% | 40% | 15% |
| Major-severe storm | 15% | 25% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 15% |
| Minor storm | 20% | 15% | 30% |
| Major-severe storm | 70% | 79% | 50% |
All times in UTC
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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 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |