:Product: 1111RSGA.txt :Issued: 2012 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 316 Issued at 2200Z on 11 Nov 2012 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 11/0233Z from newly numbered Region 1614(N15E72). There were two other newly numbered regions on the disk as well: 1613 (S21E57) and 1615 (N09E61). A non-earth directed CME was observed off of the southwest limb on LASCO C2 imagery at 10/2224Z and was associated with the eruption of a large prominence. There are currently 7 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be at low with a chance for moderate levels 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 quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 352 km/s at 11/2010Z. Total IMF reached 5.4 nT at 11/1104Z. The maximum southward component of Bz reached -5.2 nT at 11/1150Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be initially quiet but is expected to become mostly active with a chance for minor storm levels beginning about mid-day on day 1 (12 Nov) and partway into day 2 (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 3 (14 Nov). III. Event probabilities 12 Nov-14 Nov Class M 35/35/35 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Nov 133 Predicted 12 Nov-14 Nov 135/140/145 90 Day Mean 11 Nov 117 V. Geomagnetic A Indices Observed Afr/Ap 10 Nov 001/002 Estimated Afr/Ap 11 Nov 004/004 Predicted Afr/Ap 12 Nov-14 Nov 017/030-013/015-007/010 VI. Geomagnetic Activity Probabilities 12 Nov-14 Nov A. Middle Latitudes Active 35/35/05 Minor Storm 20/25/01 Major-severe storm 05/05/01 B. High Latitudes Active 10/30/15 Minor Storm 25/25/10 Major-severe storm 55/05/05