:Product: 1116RSGA.txt :Issued: 2018 Nov 16 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 320 Issued at 2200Z on 16 Nov 2018 IA. Analysis of Solar Active Regions and Activity from 15/2100Z to 16/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 1 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a slight chance for a C-class flare on day one (17 Nov) and expected to be very low on days two and three (18 Nov, 19 Nov). IIA. Geophysical Activity Summary 15/2100Z to 16/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 383 km/s at 15/2112Z. Total IMF reached 5 nT at 15/2143Z. The maximum southward component of Bz reached -2 nT at 16/0511Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1315 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (17 Nov) and quiet to unsettled levels on days two and three (18 Nov, 19 Nov). III. Event probabilities 17 Nov-19 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 16 Nov 071 Predicted 17 Nov-19 Nov 071/071/071 90 Day Mean 16 Nov 069 V. Geomagnetic A Indices Observed Afr/Ap 15 Nov 001/001 Estimated Afr/Ap 16 Nov 002/003 Predicted Afr/Ap 17 Nov-19 Nov 006/005-008/008-009/008 VI. Geomagnetic Activity Probabilities 17 Nov-19 Nov A. Middle Latitudes Active 10/10/20 Minor Storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/25/25 Major-severe storm 15/20/30