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Solar activity report
Report of Solar-Geophysical Activity 2024 Jan 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 22 Issued at 2200Z on 22 Jan 2024IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
22/1947Z from Region 3559 (N27E11). There are currently 8 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
(23 Jan, 24 Jan, 25 Jan).
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 509 km/s at 22/1950Z. Total IMF reached 14 nT at
22/1700Z. The maximum southward component of Bz reached -9 nT at
22/1923Z. Protons greater than 10 MeV at geosynchronous orbit reached a
peak level of 7 pfu at 22/1655Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 159 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to major storm levels on day one (23 Jan), quiet to
unsettled levels on day two (24 Jan) and unsettled to active levels on
day three (25 Jan). Protons are likely to cross threshold on days one
and two (23 Jan, 24 Jan) and have a slight chance of crossing threshold
on day three (25 Jan).
III. Event Probabilities 23 Jan to 25 Jan
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 55% | 55% | 15% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Jan 196 Predicted 23 Jan-25 Jan 180/180/175 90 Day Mean 22 Jan 155
V. Geomagnetic A Indices
Observed Afr/Ap 21 Jan 005/006 Estimated Afr/Ap 22 Jan 013/020 Predicted Afr/Ap 23 Jan-25 Jan 024/035-010/010-015/020
VI. Geomagnetic Activity Probabilities 23 Jan to 25 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 15% | 40% |
| Minor storm | 35% | 05% | 20% |
| Major-severe storm | 15% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 20% | 20% | 30% |
| Major-severe storm | 20% | 20% | 60% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 155.2 +4.4 |