:Product: 0907RSGA.txt :Issued: 2009 Sep 07 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 250 Issued at 2200Z on 07 Sep 2009 IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: Solar activity was very low. No flares were observed. The visible disk remained spotless. IB. Solar Activity Forecast: Solar activity is expected to be very low for the next three days (8-10 September). IIA. Geophysical Activity Summary 06/2100Z to 07/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet with isolated unsettled periods on day one and day two (8-9 September). The increased activity is due to a recurrent coronal hole high speed stream. On day three (10 September), the geomagnetic field will return to quiet levels. III. Event Probabilities 08 Sep-10 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 07 Sep 069 Predicted 08 Sep-10 Sep 068/068/068 90 Day Mean 07 Sep 068 V. Geomagnetic A Indices Observed Afr/Ap 06 Sep 002/003 Estimated Afr/Ap 07 Sep 002/005 Predicted Afr/Ap 08 Sep-10 Sep 005/008-007/010-005/008 VI. Geomagnetic Activity Probabilities 08 Sep-10 Sep A. Middle Latitudes Active 10/15/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/15/10 Minor storm 01/01/01 Major-severe storm 01/01/01