:Product: 0930RSGA.txt :Issued: 2006 Sep 30 2204 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 273 Issued at 2200Z on 30 Sep 2006 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity was at very low levels. Region 915 (S06W59) has developed into a Dso beta magnetic sunspot group. It was the source for a B7.2 x-ray flare which occurred at 30/1703Z. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to remain at very low levels. IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field ranged from quiet to active levels during the period. Active conditions are due to the onset of a favorably positioned coronal hole. The greater than 2 MeV electron flux at geosynchronous orbit were at high levels early in the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at predominantly unsettled to active levels. Minor storm conditions are possible on 01 October due to a recurrent coronal hole. Quiet to unsettled conditions are expected on 02 and 03 October. III. Event Probabilities 01 Oct-03 Oct Class M 05/05/05 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 30 Sep 078 Predicted 01 Oct-03 Oct 080/080/085 90 Day Mean 30 Sep 077 V. Geomagnetic A Indices Observed Afr/Ap 29 Sep 003/003 Estimated Afr/Ap 30 Sep 015/020 Predicted Afr/Ap 01 Oct-03 Oct 015/015-008/008-006/008 VI. Geomagnetic Activity Probabilities 01 Oct-03 Oct A. Middle Latitudes Active 30/20/15 Minor storm 15/05/05 Major-severe storm 05/01/01 B. High Latitudes Active 35/20/20 Minor storm 15/05/05 Major-severe storm 11/01/01