:Product: 20010531RSGA.txt :Issued: 2001 May 31 2200 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 151 Issued at 2200Z on 31 May 2001 IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: Solar activity has been low. An optically uncorrelated long duration C1 event occurred at 31/1632 UTC. IB. Solar Activity Forecast: Solar activity is expected to be low. IIA. Geophysical Activity Summary 30/2100Z to 31/2100Z: The geomagnetic field was quiet to unsettled. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. III. Event Probabilities 01 Jun-03 Jun Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 31 May 133 Predicted 01 Jun-03 Jun 130/130/125 90 Day Mean 31 May 169 V. Geomagnetic A Indices Observed Afr/Ap 30 May 002/005 Estimated Afr/Ap 31 May 005/008 Predicted Afr/Ap 01 Jun-03 Jun 008/010-008/010-008/010 VI. Geomagnetic Activity Probabilities 01 Jun-03 Jun A. Middle Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor storm 05/05/05 Major-severe storm 01/01/01