Viewing archive of Wednesday, 25 March 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 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 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 7 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 minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 633 km/s at 25/0858Z. Total IMF
reached 10 nT at 25/0843Z. The maximum southward component of Bz reached
-8 nT at 25/0714Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 8451 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (26 Mar), quiet to
unsettled levels on day two (27 Mar) and quiet levels on day three (28
Mar).
III. Event Probabilities 26 Mar to 28 Mar
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Mar 140 Predicted 26 Mar-28 Mar 145/142/140 90 Day Mean 25 Mar 141
V. Geomagnetic A Indices
Observed Afr/Ap 24 Mar 012/016 Estimated Afr/Ap 25 Mar 015/017 Predicted Afr/Ap 26 Mar-28 Mar 016/020-008/008-006/005
VI. Geomagnetic Activity Probabilities 26 Mar to 28 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 45% | 20% | 10% |
| Minor storm | 25% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 60% | 25% | 20% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/03/26 | M4.0 |
| Last geomagnetic storm | 2026/03/25 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (4%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 81.4 +3.2 |
| Last 30 days | 80 -0.8 |