:Product: 1207RSGA.txt :Issued: 2019 Dec 07 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 341 Issued at 2200Z on 07 Dec 2019 IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: 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 (08 Dec, 09 Dec, 10 Dec). IIA. Geophysical Activity Summary 06/2100Z to 07/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 401 km/s at 06/2146Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 104 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (08 Dec, 09 Dec) and quiet levels on day three (10 Dec). III. Event probabilities 08 Dec-10 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 07 Dec 070 Predicted 08 Dec-10 Dec 070/070/070 90 Day Mean 07 Dec 069 V. Geomagnetic A Indices Observed Afr/Ap 06 Dec 002/002 Estimated Afr/Ap 07 Dec 002/002 Predicted Afr/Ap 08 Dec-10 Dec 007/008-006/008-006/005 VI. Geomagnetic Activity Probabilities 08 Dec-10 Dec A. Middle Latitudes Active 20/20/10 Minor Storm 05/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/30/15 Major-severe storm 25/25/10