Viewing archive of Monday, 3 November 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Nov 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 307 Issued at 2200Z on 03 Nov 2025IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity has been at high levels for the past 24 hours.
There are currently 5 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
(04 Nov, 05 Nov, 06 Nov).
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic
field has been at unsettled to active levels for the past 24 hours.
Solar wind speed reached a peak of 550 km/s at 02/2118Z. Total IMF
reached 9 nT at 03/1001Z. The maximum southward component of Bz reached
-7 nT at 03/1335Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 6363 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (04 Nov), quiet levels on
day two (05 Nov) and quiet to minor storm levels on day three (06 Nov).
III. Event Probabilities 04 Nov to 06 Nov
| Class M | 55% | 55% | 55% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Nov 133 Predicted 04 Nov-06 Nov 125/130/135 90 Day Mean 03 Nov 150
V. Geomagnetic A Indices
Observed Afr/Ap 02 Nov 015/018 Estimated Afr/Ap 03 Nov 015/022 Predicted Afr/Ap 04 Nov-06 Nov 008/012-006/008-016/018
VI. Geomagnetic Activity Probabilities 04 Nov to 06 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 35% |
| Minor storm | 05% | 01% | 25% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 10% |
| Minor storm | 25% | 20% | 25% |
| Major-severe storm | 30% | 10% | 60% |
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 |