Viewing archive of Wednesday, 24 January 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Jan 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 24 Issued at 2200Z on 24 Jan 2024IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z 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
24/0140Z from Region 3561 (S17W57). There are currently 6 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
(25 Jan, 26 Jan, 27 Jan).
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 479 km/s at 24/0850Z. Total IMF reached 7
nT at 24/0028Z. The maximum southward component of Bz reached -5 nT at
23/2342Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 101 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on day one (25 Jan), quiet to
minor storm levels on day two (26 Jan) and active to minor storm levels
on day three (27 Jan). Protons have a slight chance of crossing
threshold on days one, two, and three (25 Jan, 26 Jan, 27 Jan).
III. Event Probabilities 25 Jan to 27 Jan
| Class M | 55% | 55% | 55% |
| Class X | 10% | 10% | 10% |
| Proton | 15% | 15% | 15% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Jan 172 Predicted 25 Jan-27 Jan 175/175/170 90 Day Mean 24 Jan 156
V. Geomagnetic A Indices
Observed Afr/Ap 23 Jan 005/005 Estimated Afr/Ap 24 Jan 012/016 Predicted Afr/Ap 25 Jan-27 Jan 016/020-018/025-023/030
VI. Geomagnetic Activity Probabilities 25 Jan to 27 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 30% |
| Minor storm | 20% | 20% | 15% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 55% | 30% | 30% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/10/31 | X2.0 |
| 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 |