:Product: 0522RSGA.txt :Issued: 2006 May 22 2253 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 142 Issued at 2200Z on 22 May 2006 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity was very low. Today's activity consisted of a single, B6 x-ray event at 1952Z from Region 884 (S13E08). The event was accompanied by a slow Type II radio sweep (estimated velocity 548 km/s). Region 884 and Region 885 (S12E17) are the only spotted regions on the disk and are stable and quiet. IB. Solar Activity Forecast: Solar activity is expected to be very low to low during the next three days (23-25 May). IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the next two days (23-24 May). Generally unsettled conditions are expected on the third day (25 May) due to recurrence. III. Event Probabilities 23 May-25 May Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 22 May 083 Predicted 23 May-25 May 085/085/085 90 Day Mean 22 May 081 V. Geomagnetic A Indices Observed Afr/Ap 21 May 004/007 Estimated Afr/Ap 22 May 005/005 Predicted Afr/Ap 23 May-25 May 005/005-005/005-008/010 VI. Geomagnetic Activity Probabilities 23 May-25 May A. Middle Latitudes Active 10/10/20 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/20 Minor storm 05/05/05 Major-severe storm 01/01/01