:Product: 1108RSGA.txt :Issued: 2025 Nov 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 312 Issued at 2200Z on 08 Nov 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 likely to be moderate with a slight chance for an X-class flare on days one, two, and three (09 Nov, 10 Nov, 11 Nov). IIA. Geophysical Activity Summary 07/2100Z to 08/2100Z: The geomagnetic field has been at unsettled to major storm levels for the past 24 hours. Solar wind speed reached a peak of 731 km/s at 07/2204Z. Total IMF reached 12 nT at 07/2250Z. The maximum southward component of Bz reached -9 nT at 08/0037Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1122 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on day one (09 Nov), unsettled to major storm levels on day two (10 Nov) and quiet to active levels on day three (11 Nov). Protons have a slight chance of crossing threshold on days one, two, and three (09 Nov, 10 Nov, 11 Nov). III. Event probabilities 09 Nov-11 Nov Class M 70/70/70 Class X 20/20/20 Proton 10/10/10 PCAF green IV. Penticton 10.7 cm Flux Observed 08 Nov 172 Predicted 09 Nov-11 Nov 172/170/175 90 Day Mean 08 Nov 151 V. Geomagnetic A Indices Observed Afr/Ap 07 Nov 020/032 Estimated Afr/Ap 08 Nov 032/049 Predicted Afr/Ap 09 Nov-11 Nov 015/018-022/030-013/015 VI. Geomagnetic Activity Probabilities 09 Nov-11 Nov A. Middle Latitudes Active 40/30/30 Minor Storm 30/40/15 Major-severe storm 15/25/05 B. High Latitudes Active 05/05/15 Minor Storm 20/15/30 Major-severe storm 70/79/50