:Product: 1119RSGA.txt :Issued: 2015 Nov 19 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 323 Issued at 2200Z on 19 Nov 2015 IA. Analysis of Solar Active Regions and Activity from 18/2100Z to 19/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 3 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 (20 Nov, 21 Nov, 22 Nov). IIA. Geophysical Activity Summary 18/2100Z to 19/2100Z: The geomagnetic field has been at quiet to minor storm levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 538 km/s at 19/0019Z. Total IMF reached 12 nT at 18/2102Z. The maximum southward component of Bz reached -9 nT at 18/2102Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 298 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (20 Nov) and quiet to unsettled levels on days two and three (21 Nov, 22 Nov). III. Event probabilities 20 Nov-22 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 19 Nov 108 Predicted 20 Nov-22 Nov 108/108/110 90 Day Mean 19 Nov 106 V. Geomagnetic A Indices Observed Afr/Ap 18 Nov 014/015 Estimated Afr/Ap 19 Nov 011/012 Predicted Afr/Ap 20 Nov-22 Nov 008/010-008/008-008/008 VI. Geomagnetic Activity Probabilities 20 Nov-22 Nov A. Middle Latitudes Active 20/10/10 Minor Storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor Storm 30/25/25 Major-severe storm 25/20/20