:Product: 0909RSGA.txt :Issued: 2025 Sep 09 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 252 Issued at 2200Z on 09 Sep 2025 IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 7 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 (10 Sep, 11 Sep, 12 Sep). IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 637 km/s at 09/0612Z. Total IMF reached 8 nT at 09/0645Z. The maximum southward component of Bz reached -6 nT at 09/1837Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1417 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (10 Sep, 11 Sep) and quiet levels on day three (12 Sep). III. Event probabilities 10 Sep-12 Sep Class M 25/25/25 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 09 Sep 121 Predicted 10 Sep-12 Sep 125/125/120 90 Day Mean 09 Sep 146 V. Geomagnetic A Indices Observed Afr/Ap 08 Sep 010/ NA Estimated Afr/Ap 09 Sep 009/009 Predicted Afr/Ap 10 Sep-12 Sep 007/008-008/008-006/005 VI. Geomagnetic Activity Probabilities 10 Sep-12 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