:Product: 0511RSGA.txt :Issued: 2009 May 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 Report of Solar and Geophysical Activity SDF Number 131 Issued at 2200Z on 11 May 2009 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity was very low. No spots and no flares were observed on the visible disk. IB. Solar Activity Forecast: Solar activity is expected to be very low, with a slight chance of an isolated C-class flare. IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: Geomagnetic activity was quiet. IIB. Geophysical Activity Forecast: Geomagnetic activity is expected to be quiet for the forecast period (12-14 May). III. Event Probabilities 12 May-14 May Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 11 May 072 Predicted 12 May-14 May 072/073/073 90 Day Mean 11 May 070 V. Geomagnetic A Indices Observed Afr/Ap 10 May 003/004 Estimated Afr/Ap 11 May 005/005 Predicted Afr/Ap 12 May-14 May 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 12 May-14 May A. Middle Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/10 Minor storm 01/01/01 Major-severe storm 01/01/01