:Product: 0519RSGA.txt :Issued: 2009 May 19 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 139 Issued at 2200Z on 19 May 2009 IA. Analysis of Solar Active Regions and Activity from 18/2100Z to 19/2100Z: Solar activity was very low. No flares were observed during the past 24 hours. Region 1017 (N18W50) continues to decay. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 18/2100Z to 19/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the forecast period (20-22 May). III. Event Probabilities 20 May-22 May Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 19 May 072 Predicted 20 May-22 May 074/073/073 90 Day Mean 19 May 070 V. Geomagnetic A Indices Observed Afr/Ap 18 May 002/004 Estimated Afr/Ap 19 May 005/005 Predicted Afr/Ap 20 May-22 May 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 20 May-22 May A. Middle Latitudes Active 05/05/05 Minor storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/10 Minor storm 01/01/01 Major-severe storm 01/01/01