:Product: 0729RSGA.txt :Issued: 2010 Jul 29 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 210 Issued at 2200Z on 29 Jul 2010 IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: Solar activity was very low. Region 1092 (N14E63) produced a pair of B-class flares, the largest a B7 event at 29/1847Z. Region 1089 (S24W62) has been quiet and stable while decreasing in area. IB. Solar Activity Forecast: Solar activity is forecast to be very low, with a slight chance for a C-class flare for the next 3 days (30 July-1 August). IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic field was quiet to unsettled. The greater than 2MeV electron flux at geosynchronous orbit reached high levels during the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is forecast to be mostly quiet to unsettled with a chance for active conditions on days 1 and 2 (30-31 July). Conditions are forecast to return to mostly quiet on day 3 (1 August). III. Event Probabilities 30 Jul-01 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 29 Jul 085 Predicted 30 Jul-01 Aug 087/087/085 90 Day Mean 29 Jul 075 V. Geomagnetic A Indices Observed Afr/Ap 28 Jul 010/014 Estimated Afr/Ap 29 Jul 008/010 Predicted Afr/Ap 30 Jul-01 Aug 008/008-008/008-005/005 VI. Geomagnetic Activity Probabilities 30 Jul-01 Aug A. Middle Latitudes Active 30/30/10 Minor storm 10/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 40/40/20 Minor storm 20/20/10 Major-severe storm 05/05/01