:Product: 0113RSGA.txt :Issued: 2017 Jan 13 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 13 Issued at 2200Z on 13 Jan 2017 IA. Analysis of Solar Active Regions and Activity from 12/2100Z to 13/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 2 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 (14 Jan, 15 Jan, 16 Jan). IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 383 km/s at 13/1703Z. Total IMF reached 6 nT at 13/1441Z. The maximum southward component of Bz reached -5 nT at 13/1441Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 7916 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (14 Jan, 15 Jan, 16 Jan). III. Event probabilities 14 Jan-16 Jan Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 13 Jan 075 Predicted 14 Jan-16 Jan 075/075/075 90 Day Mean 13 Jan 076 V. Geomagnetic A Indices Observed Afr/Ap 12 Jan 003/003 Estimated Afr/Ap 13 Jan 004/005 Predicted Afr/Ap 14 Jan-16 Jan 008/008-008/008-008/008 VI. Geomagnetic Activity Probabilities 14 Jan-16 Jan A. Middle Latitudes Active 15/15/15 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