:Product: 0802RSGA.txt :Issued: 2005 Aug 02 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 214 Issued at 2200Z on 02 Aug 2005 IA. Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity remained at moderate levels today. Region 794 (S11E47) produced the largest flare of the period, an M4/1n event that occurred at 02/1831Z. There was an associated Tenflare and a Type II Radio sweep. An associated CME on the east solar limb was first seen in LASCO C2 imagery at 02/1854Z and may have a weak geoeffective component. This region also produced multiple B and C-class flares during the period and underwent growth in both magnetic complexity and sunspot count since yesterday. Region 792 (N12E12) produced a C6/Sn at 02/2016Z, prior to this event activity was limited to minor B-class events. The delta structure in the northern portion of the spot cluster and the total sunspot area have shown decay during the period. No new regions were numbered today. IB. Solar Activity Forecast: Solar activity is expected to remain at moderate levels. Regions 792 and 794 have the potential of producing M-class flare activity. IIA. Geophysical Activity Summary 01/2100Z to 02/2100Z: The geomagnetic field was at quiet to unsettled levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on 03 August. The CME activity from yesterday and today could lead to isolated minor storming conditions on 04 August. Quiet to unsettled conditions should return by 05 August. III. Event Probabilities 03 Aug-05 Aug Class M 70/70/70 Class X 15/15/15 Proton 20/20/20 PCAF yellow IV. Penticton 10.7 cm Flux Observed 02 Aug 110 Predicted 03 Aug-05 Aug 110/115/115 90 Day Mean 02 Aug 096 V. Geomagnetic A Indices Observed Afr/Ap 01 Aug 018/016 Estimated Afr/Ap 02 Aug 012/015 Predicted Afr/Ap 03 Aug-05 Aug 005/005-015/020-005/005 VI. Geomagnetic Activity Probabilities 03 Aug-05 Aug A. Middle Latitudes Active 15/35/15 Minor storm 05/15/05 Major-severe storm 01/05/01 B. High Latitudes Active 20/35/20 Minor storm 05/25/05 Major-severe storm 01/15/01