:Product: 1111RSGA.txt :Issued: 2015 Nov 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 315 Issued at 2200Z on 11 Nov 2015 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 4 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (12 Nov, 13 Nov, 14 Nov). IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field has been at unsettled to minor storm levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 805 km/s at 11/0609Z. Total IMF reached 5 nT at 11/0109Z. The maximum southward component of Bz reached -4 nT at 11/0012Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 59508 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on day one (12 Nov), unsettled to active levels on day two (13 Nov) and active to minor storm levels on day three (14 Nov). III. Event probabilities 12 Nov-14 Nov Class M 15/15/15 Class X 01/01/01 Proton 05/05/05 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Nov 105 Predicted 12 Nov-14 Nov 105/105/110 90 Day Mean 11 Nov 105 V. Geomagnetic A Indices Observed Afr/Ap 10 Nov 032/035 Estimated Afr/Ap 11 Nov 021/027 Predicted Afr/Ap 12 Nov-14 Nov 022/030-012/015-018/025 VI. Geomagnetic Activity Probabilities 12 Nov-14 Nov A. Middle Latitudes Active 35/30/40 Minor Storm 25/10/20 Major-severe storm 10/01/01 B. High Latitudes Active 10/15/10 Minor Storm 25/30/30 Major-severe storm 60/40/55