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Solar activity report
Report of Solar-Geophysical Activity 2025 Jan 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 29 Issued at 2200Z on 29 Jan 2025IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
29/0408Z from Region 3977 (N19E53). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (30 Jan, 31 Jan,
01 Feb).
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 365 km/s at 29/1300Z. Total IMF reached 10
nT at 29/0150Z. The maximum southward component of Bz reached -6 nT at
29/0755Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 105 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (30 Jan), quiet to unsettled levels on
day two (31 Jan) and quiet to active levels on day three (01 Feb).
III. Event Probabilities 30 Jan to 01 Feb
| Class M | 35% | 35% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Jan 173 Predicted 30 Jan-01 Feb 170/170/165 90 Day Mean 29 Jan 196
V. Geomagnetic A Indices
Observed Afr/Ap 28 Jan 008/009 Estimated Afr/Ap 29 Jan 006/008 Predicted Afr/Ap 30 Jan-01 Feb 006/005-009/010-011/012
VI. Geomagnetic Activity Probabilities 30 Jan to 01 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 30% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 30% | 30% |
| Major-severe storm | 20% | 40% | 40% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/01/29 | M1.0 |
| Last geomagnetic storm | 2025/01/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2024 | 154.5 +2 |
| January 2025 | 145.3 -9.2 |
| Last 30 days | 145.9 +11.5 |