Viewing archive of Sunday, 25 December 2022
Solar activity report
Report of Solar-Geophysical Activity 2022 Dec 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 359 Issued at 2200Z on 25 Dec 2022IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z
Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C7 event observed at
25/0701Z from Region 3169 (N21W32). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on days one, two, and three (26
Dec, 27 Dec, 28 Dec).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 719 km/s at 25/0006Z. Total IMF reached 6
nT at 25/1617Z. The maximum southward component of Bz reached -5 nT at
25/1749Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1433 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (26 Dec), unsettled to
minor storm levels on day two (27 Dec) and unsettled to active levels on
day three (28 Dec).
III. Event Probabilities 26 Dec to 28 Dec
| Class M | 15% | 15% | 15% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Dec Not available Predicted 26 Dec-28 Dec 135/136/138 90 Day Mean 25 Dec 133 estimated
V. Geomagnetic A Indices
Observed Afr/Ap 24 Dec 015/021 Estimated Afr/Ap 25 Dec 011/012 Predicted Afr/Ap 26 Dec-28 Dec 009/010-023/030-010/015
VI. Geomagnetic Activity Probabilities 26 Dec to 28 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 25% | 20% |
| Minor storm | 01% | 20% | 10% |
| Major-severe storm | 01% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 15% | 20% | 20% |
| Major-severe storm | 10% | 50% | 30% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/27 | M2.0 |
| Last geomagnetic storm | 2025/03/26 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 132.3 -22.3 |
| Last 30 days | 131.2 -21.8 |