Viewing archive of Friday, 23 January 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 Jan 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 23 Issued at 2200Z on 23 Jan 2026IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 9 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
(24 Jan, 25 Jan, 26 Jan).
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic
field has been at active to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 621 km/s at 23/1704Z. Total IMF
reached 10 nT at 22/2205Z. The maximum southward component of Bz reached
-7 nT at 23/0057Z. Protons greater than 10 MeV at geosynchronous orbit
reached a peak level of 5 pfu at 22/2225Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 3391 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (24 Jan), quiet to
unsettled levels on day two (25 Jan) and quiet levels on day three (26
Jan). Protons have a slight chance of crossing threshold on days one,
two, and three (24 Jan, 25 Jan, 26 Jan).
III. Event Probabilities 24 Jan to 26 Jan
| Class M | 55% | 55% | 55% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Jan 180 Predicted 24 Jan-26 Jan 185/190/185 90 Day Mean 23 Jan 148
V. Geomagnetic A Indices
Observed Afr/Ap 22 Jan 015/019 Estimated Afr/Ap 23 Jan 021/030 Predicted Afr/Ap 24 Jan-26 Jan 014/018-008/008-005/005
VI. Geomagnetic Activity Probabilities 24 Jan to 26 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 10% |
| Minor storm | 15% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 30% | 25% | 20% |
| Major-severe storm | 45% | 25% | 10% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/05 | M1.1 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 139.3 +26.7 |
| Last 30 days | 124.9 +18 |