:Product: 0827RSGA.txt :Issued: 2009 Aug 27 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 239 Issued at 2200Z on 27 Aug 2009 IA. Analysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: Solar activity was very low. No flares were detected. The visible disk was spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z: Geomagnetic field activity was quiet. IIB. Geophysical Activity Forecast: Geomagnetic field activity is expected to be quiet to unsettled on day one (28 August) due to effects from a coronal hole. Quiet conditions are expected on days two and three (29 - 30 August). III. Event Probabilities 28 Aug-30 Aug Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 27 Aug 068 Predicted 28 Aug-30 Aug 068/068/068 90 Day Mean 27 Aug 068 V. Geomagnetic A Indices Observed Afr/Ap 26 Aug 004/004 Estimated Afr/Ap 27 Aug 007/005 Predicted Afr/Ap 28 Aug-30 Aug 007/008-005/005-005/005 VI. Geomagnetic Activity Probabilities 28 Aug-30 Aug A. Middle Latitudes Active 15/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01