Viewing archive of Sunday, 8 June 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Jun 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 159 Issued at 2200Z on 08 Jun 2025IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 5 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 (09 Jun, 10 Jun,
11 Jun).
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 462 km/s at 08/0157Z. Total IMF reached 16
nT at 07/2258Z. The maximum southward component of Bz reached -8 nT at
08/1910Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 780 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (09 Jun) and quiet to
active levels on days two and three (10 Jun, 11 Jun).
III. Event Probabilities 09 Jun to 11 Jun
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Jun 115 Predicted 09 Jun-11 Jun 115/115/115 90 Day Mean 08 Jun 152
V. Geomagnetic A Indices
Observed Afr/Ap 07 Jun 015/ 020 Estimated Afr/Ap 08 Jun 013/016 Predicted Afr/Ap 09 Jun-11 Jun 018/022-010/012-011/012
VI. Geomagnetic Activity Probabilities 09 Jun to 11 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 30% | 30% |
| Minor storm | 25% | 10% | 10% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 25% | 30% | 30% |
| Major-severe storm | 65% | 40% | 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 |