:Product: 1120RSGA.txt :Issued: 2015 Nov 20 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 324 Issued at 2200Z on 20 Nov 2015 IA. Analysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: 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 (21 Nov, 22 Nov, 23 Nov). IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 422 km/s at 20/0029Z. Total IMF reached 9 nT at 20/1956Z. The maximum southward component of Bz reached -7 nT at 20/0715Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 230 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (21 Nov, 22 Nov, 23 Nov). III. Event probabilities 21 Nov-23 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 20 Nov 111 Predicted 21 Nov-23 Nov 110/112/112 90 Day Mean 20 Nov 106 V. Geomagnetic A Indices Observed Afr/Ap 19 Nov 006/007 Estimated Afr/Ap 20 Nov 007/007 Predicted Afr/Ap 21 Nov-23 Nov 007/008-009/008-008/008 VI. Geomagnetic Activity Probabilities 21 Nov-23 Nov A. Middle Latitudes Active 10/10/10 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