Viewing archive of Friday, 12 January 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Jan 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 12 Issued at 2200Z on 12 Jan 2024IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z 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
12/0258Z from Region 3547 (N19E05). There are currently 12 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (13 Jan, 14 Jan,
15 Jan).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 499 km/s at 11/2118Z. Total IMF reached 5 nT at
12/1230Z. The maximum southward component of Bz reached -3 nT at
12/1246Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 149 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (13 Jan, 14 Jan)
and quiet levels on day three (15 Jan).
III. Event Probabilities 13 Jan to 15 Jan
| Class M | 45% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Jan 186 Predicted 13 Jan-15 Jan 190/190/190 90 Day Mean 12 Jan 150
V. Geomagnetic A Indices
Observed Afr/Ap 11 Jan 004/005 Estimated Afr/Ap 12 Jan 005/005 Predicted Afr/Ap 13 Jan-15 Jan 006/008-007/008-006/005
VI. Geomagnetic Activity Probabilities 13 Jan to 15 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 20% |
| Major-severe storm | 25% | 25% | 15% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/10/31 | X2.03 |
| Last M-flare | 2024/11/05 | M2.6 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2024 | 141.4 -74.1 |
| November 2024 | 215.8 +74.4 |
| Last 30 days | 161.1 +7.2 |