:Product: 0831RSGA.txt :Issued: 2006 Aug 31 2309 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 243 Issued at 2200Z on 31 Aug 2006 IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: Solar activity was at very low levels today. Region 905 (S08W67) produced multiple B-class flares during the period. Region 906 (S09W51) is a rapidly emerging, newly numbered region. This region produced a B7 x-ray event that occurred at 31/1748Z and had an associated Type IV radio emission in addition to a Tenflare with a peak flux of 740 sfu. IB. Solar Activity Forecast: Solar activity is expected to be at very low levels. There is a chance for an isolated C-class flares from both Regions 905 and 906. IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z: The geomagnetic field was at quiet to unsettled levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at predominantly quiet to unsettled levels. A chance for active to isolated minor storm conditions are possible on 03 September due to a recurrent coronal hole. III. Event Probabilities 01 Sep-03 Sep Class M 01/05/15 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 31 Aug 083 Predicted 01 Sep-03 Sep 090/095/090 90 Day Mean 31 Aug 077 V. Geomagnetic A Indices Observed Afr/Ap 30 Aug 005/006 Estimated Afr/Ap 31 Aug 005/005 Predicted Afr/Ap 01 Sep-03 Sep 004/005-004/010-012/020 VI. Geomagnetic Activity Probabilities 01 Sep-03 Sep A. Middle Latitudes Active 15/15/25 Minor storm 01/01/10 Major-severe storm 01/01/05 B. High Latitudes Active 20/20/35 Minor storm 05/05/15 Major-severe storm 01/01/10