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Solar activity report
Report of Solar-Geophysical Activity 2025 Feb 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 54 Issued at 2200Z on 23 Feb 2025IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z
Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a X2 event observed at
23/1927Z from Region 4001 (N24W90). There are currently 11 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
(24 Feb, 25 Feb, 26 Feb).
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 480 km/s at 23/0701Z. Total IMF reached 9
nT at 23/2014Z. The maximum southward component of Bz reached -6 nT at
23/0037Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 232 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (24 Feb,
25 Feb, 26 Feb). Protons have a slight chance of crossing threshold on
days one, two, and three (24 Feb, 25 Feb, 26 Feb).
III. Event Probabilities 24 Feb to 26 Feb
| Class M | 65% | 60% | 60% |
| Class X | 15% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Feb 210 Predicted 24 Feb-26 Feb 210/210/210 90 Day Mean 23 Feb 193
V. Geomagnetic A Indices
Observed Afr/Ap 22 Feb 003/004 Estimated Afr/Ap 23 Feb 006/006 Predicted Afr/Ap 24 Feb-26 Feb 006/008-008/008-008/006
VI. Geomagnetic Activity Probabilities 24 Feb to 26 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 25% | 25% | 20% |
All times in UTC
Currently there's no noteworthy space weather
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| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/22 | M1.3 |
| Last geomagnetic storm | 2025/04/21 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
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| April 2025 | 122.8 -11.4 |
| Last 30 days | 117.7 -15.6 |