Solar activity report
Below you'll find a daily report brought to you by the NOAA about the solar activity and auroral activity during the past day and the prediction for the coming days. This page is daily updated around midnight.
Report of Solar-Geophysical Activity 2025 Mar 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 84 Issued at 2200Z on 25 Mar 2025IA. 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 4 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 Mar, 27 Mar,
28 Mar).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 401 km/s at 24/2218Z. Total IMF reached 11
nT at 25/1924Z. The maximum southward component of Bz reached -9 nT at
25/1554Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 235 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at active to minor storm levels on day one (26 Mar), active levels
on day two (27 Mar) and unsettled to active levels on day three (28
Mar).
III. Event Probabilities 26 Mar to 28 Mar
| Class M | 30% | 25% | 25% |
| Class X | 05% | 05% | 01% |
| Proton | 05% | 05% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Mar 156 Predicted 26 Mar-28 Mar 155/155/160 90 Day Mean 25 Mar 185
V. Geomagnetic A Indices
Observed Afr/Ap 24 Mar 018/019 Estimated Afr/Ap 25 Mar 021/030 Predicted Afr/Ap 26 Mar-28 Mar 021/033-018/025-014/018
VI. Geomagnetic Activity Probabilities 26 Mar to 28 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 15% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 10% |
| Minor storm | 20% | 30% | 25% |
| Major-severe storm | 70% | 50% | 50% |
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Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/21 | M1.2 |
| Last geomagnetic storm | 2025/03/22 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 135 -19.6 |
| Last 30 days | 133.7 -19.9 |