Viewing archive of Thursday, 25 January 2024
Solar activity report
Report of Solar-Geophysical Activity 2024 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 2024IA. 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.
The largest solar event of the period was a C5 event observed at
25/1522Z from Region 3561 (S17W71). 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 (26 Jan) and expected to be low with a chance for M-class flares
on days two and three (27 Jan, 28 Jan).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 496 km/s at 25/0614Z. Total IMF reached 10 nT at
25/1435Z. The maximum southward component of Bz reached -6 nT at
25/1743Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 108 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (26 Jan), active to
minor storm levels on day two (27 Jan) and unsettled to active levels on
day three (28 Jan). Protons greater than 10 Mev have a slight chance of
crossing threshold on day one (26 Jan).
III. Event Probabilities 26 Jan to 28 Jan
| Class M | 45% | 45% | 35% |
| Class X | 10% | 05% | 01% |
| Proton | 10% | 05% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Jan 161 Predicted 26 Jan-28 Jan 160/160/150 90 Day Mean 25 Jan 156
V. Geomagnetic A Indices
Observed Afr/Ap 24 Jan 007/007 Estimated Afr/Ap 25 Jan 010/015 Predicted Afr/Ap 26 Jan-28 Jan 018/025-023/030-015/018
VI. Geomagnetic Activity Probabilities 26 Jan to 28 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 20% |
| Minor storm | 20% | 15% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 30% | 30% | 20% |
All times in UTC
Latest news
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Tuesday, 11 November 2025
X5.1 solar flare, G4 geomagnetic storm watch
Latest forum messages
Current Farside Activity 235AR4294 / 4296 / 4298 293Unspecified geomagnetic activity 39Space Weather Memes 760AR 4299 23
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/12/01 | X1.9 |
| Last M-flare | 2025/12/04 | M6.0 |
| Last geomagnetic storm | 2025/12/04 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 186 +94.2 |
| Last 30 days | 106.3 +12.6 |