Viewing archive of Friday, 26 January 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 Jan 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 26 Issued at 2200Z on 26 Jan 2024IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C9 event observed at
26/0033Z from Region 3561 (S17W85). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
day one (27 Jan) and expected to be low with a chance for M-class flares
on days two and three (28 Jan, 29 Jan).
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 495 km/s at 26/2021Z. Total IMF reached 8
nT at 26/1309Z. The maximum southward component of Bz reached -7 nT at
26/1251Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 111 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on day one (27 Jan), unsettled
to active levels on day two (28 Jan) and quiet to unsettled levels on
day three (29 Jan). Protons greater than 10 Mev have a slight chance of
crossing threshold on day one (27 Jan).
III. Event Probabilities 27 Jan to 29 Jan
| Class M | 45% | 40% | 35% |
| Class X | 10% | 05% | 05% |
| Proton | 10% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Jan 157 Predicted 27 Jan-29 Jan 155/145/140 90 Day Mean 26 Jan 157
V. Geomagnetic A Indices
Observed Afr/Ap 25 Jan 004/004 Estimated Afr/Ap 26 Jan 009/014 Predicted Afr/Ap 27 Jan-29 Jan 021/028-015/018-011/010
VI. Geomagnetic Activity Probabilities 27 Jan to 29 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 20% |
| Minor storm | 15% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 30% |
| Major-severe storm | 30% | 20% | 25% |
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 |