:Product: 0323RSGA.txt :Issued: 2006 Mar 23 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 082 Issued at 2200Z on 23 Mar 2006 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity was very low. Region 862 (S07W66) decayed to approximately 60 millionths in area. A CME was detected in LASCO imagery at 22/2150 UTC off of the east limb. This CME appeared to be a backside event. IB. Solar Activity Forecast: Solar activity is expected to be very low with a chance for an isolated C-flare from Region 862. IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field was mostly quiet. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels again today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled with the chance for isolated active periods. Elevated activity is due to a coronal hole high speed stream that is expected to become geoeffective on 24 March. III. Event Probabilities 24 Mar-26 Mar Class M 05/05/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 23 Mar 077 Predicted 24 Mar-26 Mar 075/075/075 90 Day Mean 23 Mar 080 V. Geomagnetic A Indices Observed Afr/Ap 22 Mar 009/010 Estimated Afr/Ap 23 Mar 005/006 Predicted Afr/Ap 24 Mar-26 Mar 008/012-008/012-005/010 VI. Geomagnetic Activity Probabilities 24 Mar-26 Mar A. Middle Latitudes Active 20/20/15 Minor storm 10/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 25/25/20 Minor storm 15/15/10 Major-severe storm 05/05/01