Viewing archive of Saturday, 29 November 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Nov 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 333 Issued at 2200Z on 29 Nov 2025IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity has been at high levels for the past 24 hours.
There are currently 4 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
(30 Nov, 01 Dec, 02 Dec).
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic
field has been at unsettled to active levels for the past 24 hours.
Solar wind speed reached a peak of 692 km/s at 29/1754Z. Total IMF
reached 7 nT at 29/1432Z. The maximum southward component of Bz reached
-6 nT at 29/1325Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 23004 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (30 Nov) and quiet levels on
days two and three (01 Dec, 02 Dec).
III. Event Probabilities 30 Nov to 02 Dec
| Class M | 65% | 65% | 65% |
| Class X | 15% | 15% | 15% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Nov 160 Predicted 30 Nov-02 Dec 160/165/170 90 Day Mean 29 Nov 145
V. Geomagnetic A Indices
Observed Afr/Ap 28 Nov 016/022 Estimated Afr/Ap 29 Nov 014/019 Predicted Afr/Ap 30 Nov-02 Dec 011/012-005/005-005/005
VI. Geomagnetic Activity Probabilities 30 Nov to 02 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 10% | 10% |
| Minor storm | 10% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 40% | 15% | 15% |
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 |