Viewing archive of Thursday, 20 November 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Nov 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 324 Issued at 2200Z on 20 Nov 2025IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on days one, two, and three (21
Nov, 22 Nov, 23 Nov).
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 456 km/s at 20/1651Z. Total IMF reached 17 nT at
20/1417Z. The maximum southward component of Bz reached -10 nT at
20/1937Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 2883 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (21 Nov), quiet to unsettled
levels on day two (22 Nov) and quiet levels on day three (23 Nov).
III. Event Probabilities 21 Nov to 23 Nov
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Nov 121 Predicted 21 Nov-23 Nov 125/120/115 90 Day Mean 20 Nov 153
V. Geomagnetic A Indices
Observed Afr/Ap 19 Nov 002/003 Estimated Afr/Ap 20 Nov 007/008 Predicted Afr/Ap 21 Nov-23 Nov 013/015-008/008-006/005
VI. Geomagnetic Activity Probabilities 21 Nov to 23 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 15% |
| Minor storm | 15% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 50% | 25% | 20% |
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 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |