Viewing archive of Thursday, 9 January 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Jan 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 9 Issued at 2200Z on 09 Jan 2025IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
09/0026Z from Region 3947 (N12W22). 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 and two (10 Jan,
11 Jan) and likely to be moderate on day three (12 Jan).
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 415 km/s at 09/1748Z. Total IMF reached 10
nT at 09/1333Z. The maximum southward component of Bz reached -10 nT at
09/1432Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1519 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (10 Jan, 11 Jan)
and quiet to active levels on day three (12 Jan). Protons greater than
10 Mev have a slight chance of crossing threshold on day one (10 Jan).
III. Event Probabilities 10 Jan to 12 Jan
| Class M | 55% | 55% | 55% |
| Class X | 15% | 10% | 05% |
| Proton | 10% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Jan 162 Predicted 10 Jan-12 Jan 165/165/160 90 Day Mean 09 Jan 199
V. Geomagnetic A Indices
Observed Afr/Ap 08 Jan 006/005 Estimated Afr/Ap 09 Jan 010/012 Predicted Afr/Ap 10 Jan-12 Jan 008/008-008/008-009/010
VI. Geomagnetic Activity Probabilities 10 Jan to 12 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 35% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 30% |
| Major-severe storm | 25% | 25% | 50% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/01/04 | X1.85 |
| Last M-flare | 2025/01/09 | M1.1 |
| Last geomagnetic storm | 2025/01/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2024 | 154.5 +2 |
| January 2025 | 159.6 +5.1 |
| Last 30 days | 152.6 +32.7 |