:Product: 1112RSGA.txt :Issued: 2021 Nov 12 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 316 Issued at 2200Z on 12 Nov 2021 IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 3 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 on days one, two, and three (13 Nov, 14 Nov, 15 Nov). IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 451 km/s at 11/2202Z. Total IMF reached 7 nT at 12/0345Z. The maximum southward component of Bz reached -5 nT at 12/0023Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 895 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (13 Nov, 14 Nov, 15 Nov). III. Event probabilities 13 Nov-15 Nov Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 12 Nov 083 Predicted 13 Nov-15 Nov 083/081/081 90 Day Mean 12 Nov 087 V. Geomagnetic A Indices Observed Afr/Ap 11 Nov 003/003 Estimated Afr/Ap 12 Nov 005/005 Predicted Afr/Ap 13 Nov-15 Nov 005/005-005/005-006/005 VI. Geomagnetic Activity Probabilities 13 Nov-15 Nov A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor Storm 20/20/20 Major-severe storm 10/10/10