:Product: 0831RSGA.txt :Issued: 2009 Aug 31 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 243 Issued at 2200Z on 31 Aug 2009 IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: Solar activity was very low. New Region 1025 (N17E33) was assigned today. No flares were observed. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z: The geomagnetic field was quiet to unsettled. The unsettled conditions were due to a coronal hole high speed stream. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet on days 1 and 2 (1 - 2 September). Day 3 (3 September) is expected to increase to quiet to unsettled levels due to a recurrent coronal hole high speed stream. III. Event Probabilities 01 Sep-03 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 31 Aug 068 Predicted 01 Sep-03 Sep 068/068/068 90 Day Mean 31 Aug 068 V. Geomagnetic A Indices Observed Afr/Ap 30 Aug 012/019 Estimated Afr/Ap 31 Aug 007/007 Predicted Afr/Ap 01 Sep-03 Sep 005/005-005/005-008/010 VI. Geomagnetic Activity Probabilities 01 Sep-03 Sep A. Middle Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01