:Product: 0811RSGA.txt :Issued: 2010 Aug 11 2201 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 223 Issued at 2200Z on 11 Aug 2010 IA. Analysis of Solar Active Regions and Activity from 10/2100Z to 11/2100Z: Solar activity was very low. Several low-level B-class flares were observed during the period. Region 1098 (N15E28) was numbered and was classified as a Dro spot group with a beta magnetic configuration. IB. Solar Activity Forecast: Solar activity is expected to be very low, with a chance for a C-class flare from Region 1098. IIA. Geophysical Activity Summary 10/2100Z to 11/2100Z: The geomagnetic field was at quiet to unsettled levels, with a single unsettled period between 11/06-09Z. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels today. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be quiet for the next three days (12-14 August). III. Event Probabilities 12 Aug-14 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 11 Aug 086 Predicted 12 Aug-14 Aug 086/087/087 90 Day Mean 11 Aug 076 V. Geomagnetic A Indices Observed Afr/Ap 10 Aug 007/008 Estimated Afr/Ap 11 Aug 005/005 Predicted Afr/Ap 12 Aug-14 Aug 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 12 Aug-14 Aug A. Middle Latitudes Active 10/10/10 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