Viewing archive of Wednesday, 12 November 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Nov 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 316 Issued at 2200Z on 12 Nov 2025IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 8 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be high on
days one, two, and three (13 Nov, 14 Nov, 15 Nov).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic
field has been at unsettled to severe storm levels for the past 24
hours. Solar wind speed reached a peak of 969 km/s at 12/1946Z. Total
IMF reached 61 nT at 12/0036Z. The maximum southward component of Bz
reached -55 nT at 11/2357Z. Protons greater than 10 MeV at
geosynchronous orbit reached a peak level of 1456 pfu at 12/0215Z.
Protons greater than 100 MeV at geosynchronous orbit reached a peak
level of 37 pfu at 12/0150Z. Electrons greater than 2 MeV at
geosynchronous orbit appeared to be contaminated.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at active to severe storm levels on day one (13 Nov), unsettled to
minor storm levels on day two (14 Nov) and quiet to unsettled levels on
day three (15 Nov). Protons are expected to cross threshold on day one
(13 Nov), are expected to cross threshold on day two (14 Nov) and are
likely to cross threshold on day three (15 Nov).
III. Event Probabilities 13 Nov to 15 Nov
| Class M | 85% | 85% | 85% |
| Class X | 55% | 55% | 55% |
| Proton | 99% | 75% | 55% |
| PCAF | red | ||
IV. Penticton 10.7 cm Flux
Observed 12 Nov 163 Predicted 13 Nov-15 Nov 160/160/155 90 Day Mean 12 Nov 152
V. Geomagnetic A Indices
Observed Afr/Ap 11 Nov 004/007 Estimated Afr/Ap 12 Nov 113/144 Predicted Afr/Ap 13 Nov-15 Nov 059/097-016/022-008/008
VI. Geomagnetic Activity Probabilities 13 Nov to 15 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 35% | 20% |
| Minor storm | 35% | 25% | 05% |
| Major-severe storm | 50% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 01% | 10% | 15% |
| Minor storm | 10% | 30% | 25% |
| Major-severe storm | 90% | 55% | 25% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/06 | M8.1 |
| 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 | 167.7 +75.9 |
| Last 30 days | 107.1 +13.7 |