:Product: 20040530RSGA.txt :Issued: 2004 May 30 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 30 May 2004 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity has been low. Region 618 (S09W72) produced a single C1.2 flare at 30/1934 UTC. Region 618 has decreased slightly in magnetic complexity and is in a beta-gamma configuration. New region 622 (S12E72) was numbered today. IB. Solar Activity Forecast: Solar activity is expected to be low. Regions 618 and 621 (S15E51) may produce C-class flares. IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been quiet to unsettled. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled, with active and isolated minor storm conditions possible for the next three days as a coronal hole high speed solar wind stream moves into geoeffective position. III. Event Probabilities 31 May-02 Jun Class M 40/30/10 Class X 05/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 30 May 100 Predicted 31 May-02 Jun 100/100/090 90 Day Mean 30 May 105 V. Geomagnetic A Indices Observed Afr/Ap 29 May 012/014 Estimated Afr/Ap 30 May 012/012 Predicted Afr/Ap 31 May-02 Jun 015/015-015/015-012/015 VI. Geomagnetic Activity Probabilities 31 May-02 Jun A. Middle Latitudes Active 35/35/20 Minor storm 20/20/10 Major-severe storm 05/05/01 B. High Latitudes Active 40/40/40 Minor storm 30/30/25 Major-severe storm 15/15/10