:Product: 1214RSGA.txt :Issued: 2025 Dec 14 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 348 Issued at 2200Z on 14 Dec 2025 IA. Analysis of Solar Active Regions and Activity from 13/2100Z to 14/2100Z: 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 chance for M-class flares on days one, two, and three (15 Dec, 16 Dec, 17 Dec). IIA. Geophysical Activity Summary 13/2100Z to 14/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 701 km/s at 13/2230Z. Total IMF reached 5 nT at 14/0122Z. The maximum southward component of Bz reached -3 nT at 14/2030Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 378 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (15 Dec, 16 Dec, 17 Dec). III. Event probabilities 15 Dec-17 Dec Class M 25/25/25 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 14 Dec 119 Predicted 15 Dec-17 Dec 120/120/120 90 Day Mean 14 Dec 151 V. Geomagnetic A Indices Observed Afr/Ap 13 Dec 008/014 Estimated Afr/Ap 14 Dec 007/008 Predicted Afr/Ap 15 Dec-17 Dec 010/010-008/008-007/010 VI. Geomagnetic Activity Probabilities 15 Dec-17 Dec A. Middle Latitudes Active 20/15/20 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/25/25 Major-severe storm 30/25/30