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Solar activity report
Report of Solar-Geophysical Activity 2025 Apr 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 96 Issued at 2200Z on 06 Apr 2025IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z 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 likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(07 Apr, 08 Apr, 09 Apr).
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 734 km/s at 06/0323Z. Total IMF
reached 8 nT at 06/0518Z. The maximum southward component of Bz reached
-7 nT at 06/0013Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 9242 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and two (07 Apr, 08 Apr) and
quiet to unsettled levels on day three (09 Apr).
III. Event Probabilities 07 Apr to 09 Apr
| Class M | 55% | 55% | 55% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Apr 167 Predicted 07 Apr-09 Apr 165/160/150 90 Day Mean 06 Apr 178
V. Geomagnetic A Indices
Observed Afr/Ap 05 Apr 020/ NA Estimated Afr/Ap 06 Apr 018/021 Predicted Afr/Ap 07 Apr-09 Apr 011/004-013/004-007/003
VI. Geomagnetic Activity Probabilities 07 Apr to 09 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 15% |
| Minor storm | 20% | 15% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 30% | 30% | 20% |
| Major-severe storm | 50% | 45% | 25% |
All times in UTC
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/05 | M1.0 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 148.7 +14.5 |
| Last 30 days | 132.7 -9.9 |