:Product: 0522RSGA.txt :Issued: 2010 May 22 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction 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 2010 IA. Analysis of Solar Active Regions and Activity from 21/2100Z to 22/2100Z: Solar activity was very low. Region 1072 (S16E08) has grown in both white light areal coverage and sunspot count and remains a beta magnetic configuration. No x-ray flares were observed during the period. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 21/2100Z to 22/2100Z: The geomagnetic field was quiet. Solar wind velocity observed from the ACE spacecraft show speeds averaging around 370 km/s. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels for the next three days (23-25 May). 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 073 Predicted 23 May-25 May 074/075/075 90 Day Mean 22 May 078 V. Geomagnetic A Indices Observed Afr/Ap 21 May 004/005 Estimated Afr/Ap 22 May 002/005 Predicted Afr/Ap 23 May-25 May 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 23 May-25 May A. Middle Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01