:Product: 0409RSGA.txt :Issued: 2006 Apr 09 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 099 Issued at 2200Z on 09 Apr 2006 IA. Analysis of Solar Active Regions and Activity from 08/2100Z to 09/2100Z: Solar activity was very low. Region 865 has rotated around the west limb. All other regions have remained quiescent. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 08/2100Z to 09/2100Z: The geomagnetic field was at quiet to minor storm levels, with major storming at high latitudes. The geomagnetic storm was the result of a co-rotating interaction region preceding the high speed stream from a coronal hole. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be unsettled to active with a chance for minor storm conditions on 10 April. Quiet to unsettled conditions are expected on 11 - 12 April. III. Event Probabilities 10 Apr-12 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 09 Apr 089 Predicted 10 Apr-12 Apr 085/080/080 90 Day Mean 09 Apr 080 V. Geomagnetic A Indices Observed Afr/Ap 08 Apr 003/005 Estimated Afr/Ap 09 Apr 020/020 Predicted Afr/Ap 10 Apr-12 Apr 015/015-008/010-005/005 VI. Geomagnetic Activity Probabilities 10 Apr-12 Apr A. Middle Latitudes Active 25/20/15 Minor storm 15/05/01 Major-severe storm 05/01/01 B. High Latitudes Active 40/30/20 Minor storm 25/10/05 Major-severe storm 15/05/01