:Product: 1125RSGA.txt :Issued: 2015 Nov 25 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 329 Issued at 2200Z on 25 Nov 2015 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 25/0827Z. There are currently 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a chance for a C-class flares and a slight chance for an M-class flare on days one, two, and three (26 Nov, 27 Nov, 28 Nov). IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 291 km/s at 24/2257Z. Total IMF reached 5 nT at 25/1843Z. The maximum southward component of Bz reached 0 nT at 25/0336Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 218 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (26 Nov, 27 Nov, 28 Nov). III. Event probabilities 26 Nov-28 Nov Class M 10/10/10 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Nov 109 Predicted 26 Nov-28 Nov 110/110/110 90 Day Mean 25 Nov 105 V. Geomagnetic A Indices Observed Afr/Ap 24 Nov 001/000 Estimated Afr/Ap 25 Nov 002/002 Predicted Afr/Ap 26 Nov-28 Nov 007/008-007/008-007/008 VI. Geomagnetic Activity Probabilities 26 Nov-28 Nov A. Middle Latitudes Active 15/15/15 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor Storm 25/25/25 Major-severe storm 20/20/20