:Product: 0817RSGA.txt :Issued: 2010 Aug 17 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 229 Issued at 2200Z on 17 Aug 2010 IA. Analysis of Solar Active Regions and Activity from 16/2100Z to 17/2100Z: Solar activity was very low. Region 1099 (N17W97) produced seven B-class flares during the period. No new regions were numbered. IB. Solar Activity Forecast: Solar activity is expected to be very low, with a slight chance for a C-class flare from Region 1098 (N14W55). IIA. Geophysical Activity Summary 16/2100Z to 17/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the next three days (18-20 August). III. Event Probabilities 18 Aug-20 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 17 Aug 081 Predicted 18 Aug-20 Aug 081/081/080 90 Day Mean 17 Aug 077 V. Geomagnetic A Indices Observed Afr/Ap 16 Aug 004/007 Estimated Afr/Ap 17 Aug 004/005 Predicted Afr/Ap 18 Aug-20 Aug 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 18 Aug-20 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