:Product: 0922RSGA.txt :Issued: 2009 Sep 22 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 265 Issued at 2200Z on 22 Sep 2009 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity was very low. There were two x-ray events during the past 24 hours, a B3 at 1057Z and a B4 at 2041Z. Both of these events originated from Region 1026 (S29E57) which has rotated into view as a small, C-type sunspot group with a simple beta magnetic configuration. Region 1027 (N24E31) emerged on the disk today and appears to be a small D-type region in a simple beta magnetic configuration. IB. Solar Activity Forecast: Solar activity is expected to be very low for the next three days (23-25 September). There is a slight chance for an isolated C-class event. IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field was quiet during the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the next three days (23-25 September). III. Event Probabilities 23 Sep-25 Sep Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 22 Sep 075 Predicted 23 Sep-25 Sep 077/077/077 90 Day Mean 22 Sep 068 V. Geomagnetic A Indices Observed Afr/Ap 21 Sep 005/007 Estimated Afr/Ap 22 Sep 005/005 Predicted Afr/Ap 23 Sep-25 Sep 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 23 Sep-25 Sep A. Middle Latitudes Active 05/05/15 Minor storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 05/05/15 Minor storm 01/01/05 Major-severe storm 01/01/01