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Solar activity report
Report of Solar-Geophysical Activity 2024 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 2024IA. 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 X6 event observed at
22/2234Z from Region 3590 (N18E26). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a chance for X-class flares 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 levels for the past 24 hours. Solar wind speed
reached a peak of 368 km/s at 22/2315Z. Total IMF reached 6 nT at
23/1639Z. The maximum southward component of Bz reached -4 nT at
23/0944Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (24 Feb), quiet to minor storm levels
on day two (25 Feb) and quiet to unsettled levels on day three (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 | 60% | 60% | 60% |
| Class X | 30% | 30% | 30% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Feb 173 Predicted 24 Feb-26 Feb 175/175/175 90 Day Mean 23 Feb 163
V. Geomagnetic A Indices
Observed Afr/Ap 22 Feb 006/005 Estimated Afr/Ap 23 Feb 004/005 Predicted Afr/Ap 24 Feb-26 Feb 006/005-015/020-008/012
VI. Geomagnetic Activity Probabilities 24 Feb to 26 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 25% | 15% |
| Minor storm | 01% | 10% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 25% | 25% |
| Major-severe storm | 20% | 35% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/21 | M1.2 |
| Last geomagnetic storm | 2025/03/21 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 140.3 -14.3 |
| Last 30 days | 141.7 -9.5 |