:Product: 1127RSGA.txt :Issued: 2025 Nov 27 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 331 Issued at 2200Z on 27 Nov 2025 IA. Analysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: 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 slight chance for an M-class flare on days one, two, and three (28 Nov, 29 Nov, 30 Nov). IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z: The geomagnetic field has been at unsettled to minor storm levels for the past 24 hours. Solar wind speed reached a peak of 779 km/s at 26/2242Z. Total IMF reached 7 nT at 27/1714Z. The maximum southward component of Bz reached -6 nT at 27/1131Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 8297 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at active levels on day one (28 Nov) and quiet to unsettled levels on days two and three (29 Nov, 30 Nov). III. Event probabilities 28 Nov-30 Nov Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 27 Nov 120 Predicted 28 Nov-30 Nov 125/125/130 90 Day Mean 27 Nov 147 V. Geomagnetic A Indices Observed Afr/Ap 26 Nov 015/023 Estimated Afr/Ap 27 Nov 021/028 Predicted Afr/Ap 28 Nov-30 Nov 018/025-009/012-008/008 VI. Geomagnetic Activity Probabilities 28 Nov-30 Nov A. Middle Latitudes Active 25/25/25 Minor Storm 10/10/10 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/25/25 Major-severe storm 35/35/35