Viewing archive of Sunday, 25 January 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 Jan 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 25 Issued at 2200Z on 25 Jan 2026IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z 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 expected to be low with
a chance for M-class flares on days one, two, and three (26 Jan, 27 Jan,
28 Jan).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at unsettled levels for the past 24 hours. Solar wind
speed reached a peak of 645 km/s at 25/0954Z. Total IMF reached 7 nT at
25/0334Z. The maximum southward component of Bz reached -5 nT at
25/0512Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 6154 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (26 Jan), quiet to unsettled
levels on day two (27 Jan) and unsettled to minor storm levels on day
three (28 Jan).
III. Event Probabilities 26 Jan to 28 Jan
| Class M | 45% | 40% | 35% |
| Class X | 05% | 05% | 01% |
| Proton | 05% | 05% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Jan 165 Predicted 26 Jan-28 Jan 160/150/145 90 Day Mean 25 Jan 150
V. Geomagnetic A Indices
Observed Afr/Ap 24 Jan 012/017 Estimated Afr/Ap 25 Jan 014/017 Predicted Afr/Ap 26 Jan-28 Jan 008/008-008/008-018/024
VI. Geomagnetic Activity Probabilities 26 Jan to 28 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 40% |
| Minor storm | 05% | 05% | 25% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 25% | 25% | 65% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/02/02 | X1.6 |
| Last M-flare | 2026/02/03 | M3.6 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 114 -10 |
| Last 30 days | 118.1 +6.2 |