:Product: 0908RSGA.txt :Issued: 2025 Sep 08 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 251 Issued at 2200Z on 08 Sep 2025 IA. 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 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 (09 Sep, 10 Sep, 11 Sep). 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 639 km/s at 08/0833Z. Total IMF reached 8 nT at 07/2336Z. The maximum southward component of Bz reached -5 nT at 08/0855Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 492 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (09 Sep, 10 Sep) and quiet levels on day three (11 Sep). III. Event probabilities 09 Sep-11 Sep Class M 25/25/25 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 08 Sep 124 Predicted 09 Sep-11 Sep 135/130/125 90 Day Mean 08 Sep 146 V. Geomagnetic A Indices Observed Afr/Ap 07 Sep 004/ NA Estimated Afr/Ap 08 Sep 012/014 Predicted Afr/Ap 09 Sep-11 Sep 007/008-007/008-006/005 VI. Geomagnetic Activity Probabilities 09 Sep-11 Sep A. Middle Latitudes Active 20/20/10 Minor Storm 05/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/30/20 Major-severe storm 25/25/20