:Product: 1209RSGA.txt :Issued: 2019 Dec 09 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 343 Issued at 2200Z on 09 Dec 2019 IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (10 Dec, 11 Dec, 12 Dec). IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 384 km/s at 08/2208Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 137 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (10 Dec, 11 Dec, 12 Dec). III. Event probabilities 10 Dec-12 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 09 Dec 071 Predicted 10 Dec-12 Dec 070/070/070 90 Day Mean 09 Dec 069 V. Geomagnetic A Indices Observed Afr/Ap 08 Dec 002/002 Estimated Afr/Ap 09 Dec 008/008 Predicted Afr/Ap 10 Dec-12 Dec 006/005-006/005-006/005 VI. Geomagnetic Activity Probabilities 10 Dec-12 Dec A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 15/15/15 Major-severe storm 10/10/10