:Product: 1211RSGA.txt :Issued: 2019 Dec 11 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 345 Issued at 2200Z on 11 Dec 2019 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: 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 (12 Dec, 13 Dec, 14 Dec). IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 498 km/s at 11/0635Z. Total IMF reached 8 nT at 11/0214Z. The maximum southward component of Bz reached -6 nT at 11/0218Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (12 Dec, 13 Dec, 14 Dec). III. Event probabilities 12 Dec-14 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Dec 071 Predicted 12 Dec-14 Dec 070/070/070 90 Day Mean 11 Dec 069 V. Geomagnetic A Indices Observed Afr/Ap 10 Dec 002/003 Estimated Afr/Ap 11 Dec 004/005 Predicted Afr/Ap 12 Dec-14 Dec 006/005-006/005-007/008 VI. Geomagnetic Activity Probabilities 12 Dec-14 Dec 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 15/15/30 Major-severe storm 10/10/25