:Product: 0812RSGA.txt :Issued: 2010 Aug 12 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 224 Issued at 2200Z on 12 Aug 2010 IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: Solar activity was very low. Region 1098 (N14E14) produced two low-level B-class flares during the period. No new regions were assigned. IB. Solar Activity Forecast: Solar activity is expected to be very low, with a chance for a C-class flare. IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z: The geomagnetic field was at quiet levels. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be quiet until late on day three (15 August). Unsettled to active levels are expected late on day three due to a coronal hole high-speed stream. III. Event Probabilities 13 Aug-15 Aug Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 12 Aug 086 Predicted 13 Aug-15 Aug 085/085/085 90 Day Mean 12 Aug 076 V. Geomagnetic A Indices Observed Afr/Ap 11 Aug 009/010 Estimated Afr/Ap 12 Aug 003/005 Predicted Afr/Ap 13 Aug-15 Aug 005/005-005/005-007/008 VI. Geomagnetic Activity Probabilities 13 Aug-15 Aug A. Middle Latitudes Active 10/10/15 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/20 Minor storm 01/01/05 Major-severe storm 01/01/01