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Solar activity report
Report of Solar-Geophysical Activity 2025 Feb 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 53 Issued at 2200Z on 22 Feb 2025IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
22/0306Z from Region 4001 (N24W76). There are currently 13 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
days one, two, and three (23 Feb, 24 Feb, 25 Feb).
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 497 km/s at 22/0136Z. Total IMF reached 7
nT at 22/1608Z. The maximum southward component of Bz reached -5 nT at
22/2000Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 382 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and three (23 Feb, 25 Feb) and quiet
to unsettled levels on day two (24 Feb). Protons have a slight chance of
crossing threshold on days one, two, and three (23 Feb, 24 Feb, 25 Feb).
III. Event Probabilities 23 Feb to 25 Feb
| Class M | 45% | 45% | 45% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Feb 199 Predicted 23 Feb-25 Feb 195/190/190 90 Day Mean 22 Feb 193
V. Geomagnetic A Indices
Observed Afr/Ap 21 Feb 006/003 Estimated Afr/Ap 22 Feb 006/006 Predicted Afr/Ap 23 Feb-25 Feb 005/005-006/008-007/008
VI. Geomagnetic Activity Probabilities 23 Feb to 25 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 20% | 25% | 25% |
| Major-severe storm | 10% | 25% | 25% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/02/21 | M1.4 |
| Last geomagnetic storm | 2025/02/19 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2025 | 137 -17.5 |
| February 2025 | 151.4 +14.4 |
| Last 30 days | 148.3 -13.8 |