Viewing archive of Friday, 14 March 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Mar 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 73 Issued at 2200Z on 14 Mar 2025IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 10 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
days one, two, and three (15 Mar, 16 Mar, 17 Mar).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at unsettled to major storm levels for the past 24 hours.
Solar wind speed reached a peak of 691 km/s at 14/1926Z. Total IMF
reached 8 nT at 14/1920Z. The maximum southward component of Bz reached
-7 nT at 14/0013Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 3981 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to active levels on day one (15 Mar) and quiet to
active levels on days two and three (16 Mar, 17 Mar).
III. Event Probabilities 15 Mar to 17 Mar
| Class M | 45% | 45% | 45% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Mar 180 Predicted 15 Mar-17 Mar 180/180/180 90 Day Mean 14 Mar 188
V. Geomagnetic A Indices
Observed Afr/Ap 13 Mar 026/038 Estimated Afr/Ap 14 Mar 019/025 Predicted Afr/Ap 15 Mar-17 Mar 015/020-013/015-011/012
VI. Geomagnetic Activity Probabilities 15 Mar to 17 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 30% |
| Minor storm | 15% | 15% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 25% | 30% | 25% |
| Major-severe storm | 50% | 45% | 40% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/06/19 | X1.9 |
| Last M-flare | 2025/10/03 | M1.2 |
| Last geomagnetic storm | 2025/10/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2025 | 129.8 -3.7 |
| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |