:Product: 1112RSGA.txt :Issued: 2012 Nov 12 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 317 Issued at 2200Z on 12 Nov 2012 IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 12/1022Z from Region 1610 (S22W10). There are currently 8 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be at low to moderate levels on days one, two, and three (13 Nov, 14 Nov, 15 Nov). IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 362 km/s at 12/0605Z. Total IMF reached 12 nT at 12/0724Z. The maximum southward component of Bz reached -8.1 nT at 12/1934Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at mostly active with a chance for minor storm levels early on day one (13 Nov) due to the arrival of the CMEs from 09/1524Z and 10/0539Z. Activity is expected to decrease to generally unsettled levels on day 2 (14 Nov) as CME effects subside. On day 3 (15 Nov) conditions are expected to return to mostly quiet levels. III. Event probabilities 13 Nov-15 Nov Class M 35/35/35 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 12 Nov 144 Predicted 13 Nov-15 Nov 145/145/150 90 Day Mean 12 Nov 118 V. Geomagnetic A Indices Observed Afr/Ap 11 Nov 002/002 Estimated Afr/Ap 12 Nov 005/008 Predicted Afr/Ap 13 Nov-15 Nov 013/015-007/010-006/005 VI. Geomagnetic Activity Probabilities 13 Nov-15 Nov A. Middle Latitudes Active 35/20/05 Minor Storm 25/05/01 Major-severe storm 05/01/01 B. High Latitudes Active 30/20/15 Minor Storm 25/30/10 Major-severe storm 05/25/05