:Product: 0520RSGA.txt :Issued: 2006 May 20 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 140 Issued at 2200Z on 20 May 2006 IA. Analysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: Solar activity was very low. New Region 885 (S12E44) was numbered today. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z: The geomagnetic field was quiet to active. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be predominately quiet. III. Event Probabilities 21 May-23 May Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 20 May 076 Predicted 21 May-23 May 079/080/085 90 Day Mean 20 May 081 V. Geomagnetic A Indices Observed Afr/Ap 19 May 007/008 Estimated Afr/Ap 20 May 005/005 Predicted Afr/Ap 21 May-23 May 005/007-003/005-003/005 VI. Geomagnetic Activity Probabilities 21 May-23 May A. Middle Latitudes Active 10/05/05 Minor storm 05/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/10/10 Minor storm 10/05/05 Major-severe storm 01/01/01