Viewing archive of Saturday, 7 June 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Jun 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 158 Issued at 2200Z on 07 Jun 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 6 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 Jun, 09 Jun,
10 Jun).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 463 km/s at 07/1717Z. Total IMF
reached 15 nT at 07/2057Z. The maximum southward component of Bz reached
-11 nT at 07/1855Z. Electrons greater than 2 MeV at geosynchronous
orbit reached a peak level of 2808 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on days one and two (08 Jun, 09
Jun) and quiet to active levels on day three (10 Jun).
III. Event Probabilities 08 Jun to 10 Jun
| Class M | 30% | 35% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Jun 121 Predicted 08 Jun-10 Jun 120/125/125 90 Day Mean 07 Jun 152
V. Geomagnetic A Indices
Observed Afr/Ap 06 Jun 008/ 008 Estimated Afr/Ap 07 Jun 016/020 Predicted Afr/Ap 08 Jun-10 Jun 015/020-018/022-010/012
VI. Geomagnetic Activity Probabilities 08 Jun to 10 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 40% | 30% |
| Minor storm | 25% | 25% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 25% | 25% | 30% |
| Major-severe storm | 60% | 65% | 40% |
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 |
