Viewing archive of Wednesday, 7 May 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 May 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 127 Issued at 2200Z on 07 May 2025IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 3 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 (08 May, 09 May,
10 May).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 853 km/s at 07/0544Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 12994 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (08 May), unsettled to
minor storm levels on day two (09 May) and quiet to active levels on day
three (10 May).
III. Event Probabilities 08 May to 10 May
| Class M | 45% | 45% | 45% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 May 154 Predicted 08 May-10 May 155/160/155 90 Day Mean 07 May 167
V. Geomagnetic A Indices
Observed Afr/Ap 06 May 015/015 Estimated Afr/Ap 07 May 010/011 Predicted Afr/Ap 08 May-10 May 008/010-017/025-010/012
VI. Geomagnetic Activity Probabilities 08 May to 10 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 40% | 35% |
| Minor storm | 05% | 30% | 15% |
| Major-severe storm | 01% | 10% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 05% | 10% |
| Minor storm | 30% | 20% | 30% |
| Major-severe storm | 35% | 70% | 50% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/06/03 | X1.0 |
| Last M-flare | 2026/06/03 | M7.9 |
| Last geomagnetic storm | 2026/05/16 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| June 2026 | 139.5 +60.2 |
| Last 30 days | 97.8 +5.2 |
