:Product: 1224RSGA.txt :Issued: 2025 Dec 24 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 358 Issued at 2200Z on 24 Dec 2025 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: 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 (25 Dec, 26 Dec, 27 Dec). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at unsettled to active levels for the past 24 hours. Solar wind speed reached a peak of 784 km/s at 24/1107Z. Total IMF reached 7 nT at 23/2209Z. The maximum southward component of Bz reached -6 nT at 24/0705Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 7350 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (25 Dec), quiet to unsettled levels on day two (26 Dec) and quiet levels on day three (27 Dec). III. Event probabilities 25 Dec-27 Dec Class M 30/40/45 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Dec 134 Predicted 25 Dec-27 Dec 150/155/160 90 Day Mean 24 Dec 146 V. Geomagnetic A Indices Observed Afr/Ap 23 Dec 014/021 Estimated Afr/Ap 24 Dec 019/024 Predicted Afr/Ap 25 Dec-27 Dec 011/012-008/010-006/005 VI. Geomagnetic Activity Probabilities 25 Dec-27 Dec A. Middle Latitudes Active 30/15/10 Minor Storm 15/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/15/15 Minor Storm 25/25/20 Major-severe storm 40/25/10