:Product: 0903RSGA.txt :Issued: 2008 Sep 03 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 247 Issued at 2200Z on 03 Sep 2008 IA. Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: Solar activity was very low. No flares occurred during the past 24 hours. The solar disk continues to be spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 02/2100Z to 03/2100Z: The geomagnetic field was mostly quiet during the past 24 hours. Solar wind signatures at ACE indicated the passage of a corotating interaction region followed by a slow steady rise in solar wind velocity. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be mostly unsettled with occasional active periods for the next two days (4-5 September) due to the influence of a favorably positioned coronal hole. Activity levels are expected to decline to predominantly unsettled for the third day (6 September). III. Event Probabilities 04 Sep-06 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 03 Sep 066 Predicted 04 Sep-06 Sep 066/066/066 90 Day Mean 03 Sep 066 V. Geomagnetic A Indices Observed Afr/Ap 02 Sep 002/003 Estimated Afr/Ap 03 Sep 007/008 Predicted Afr/Ap 04 Sep-06 Sep 012/012-012/018-010/012 VI. Geomagnetic Activity Probabilities 04 Sep-06 Sep A. Middle Latitudes Active 40/40/20 Minor storm 15/15/05 Major-severe storm 05/05/01 B. High Latitudes Active 50/50/30 Minor storm 20/20/10 Major-severe storm 10/10/05