:Product: 0531RSGA.txt :Issued: 2006 May 31 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 151 Issued at 2200Z on 31 May 2006 IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 31/2100Z: Solar activity was very low. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to be very 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 active for the next three days (01 - 03 June) with possible minor storm periods due to a recurrent coronal hole moving into geoeffective position. III. Event Probabilities 01 Jun-03 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 31 May 078 Predicted 01 Jun-03 Jun 080/075/080 90 Day Mean 31 May 081 V. Geomagnetic A Indices Observed Afr/Ap 30 May 007/009 Estimated Afr/Ap 31 May 006/012 Predicted Afr/Ap 01 Jun-03 Jun 010/015-015/020-015/020 VI. Geomagnetic Activity Probabilities 01 Jun-03 Jun A. Middle Latitudes Active 20/25/25 Minor storm 10/15/15 Major-severe storm 01/05/05 B. High Latitudes Active 25/30/30 Minor storm 15/20/20 Major-severe storm 05/10/10