:Product: 20020514RSGA.txt :Issued: 2002 May 14 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 134 Issued at 2200Z on 14 May 2002 IA. Analysis of Solar Active Regions and Activity from 13/2100Z to 14/2100Z: Solar activity was at low levels. The largest event was an optically uncorrelated C4.2 flare at 14/1303 UTC. Region 9945 (S04W26) has shown some modest increase in magnetic complexity and now has a beta-gamma magnetic configuration. An optically uncorrelated C2 flare occurred at 13/2056 UTC with an associated Type II radio sweep. SOHO/LASCO imagery indicate a possible source on the SW limb. An uncorrelated Type II radio sweep occurred at 14/0738 UTC as well as a Type IV radio sweep at 14/0747 UTC. SOHO/LASCO EIT imagery indicates an event beyond the SW limb at 14/0736 UTC as a probable source. IB. Solar Activity Forecast: Solar activity is expected to be low to moderate. Region 9945 and Region 9948 have the potential for low level M-class activity. IIA. Geophysical Activity Summary 13/2100Z to 14/2100Z: The geomagnetic field was at unsettled to minor storm levels. Minor storm conditions occurred from 03 - 09 UTC. Active to unsettled conditions occurred for the remainder of the period. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. Isolated active conditions are possible on day one of the forecast period, particularly at higher latitudes. III. Event Probabilities 15 May-17 May Class M 40/35/35 Class X 05/01/01 Proton 05/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 14 May 161 Predicted 15 May-17 May 165/165/160 90 Day Mean 14 May 186 V. Geomagnetic A Indices Observed Afr/Ap 13 May 009/012 Estimated Afr/Ap 14 May 025/025 Predicted Afr/Ap 15 May-17 May 015/020-010/010-008/008 VI. Geomagnetic Activity Probabilities 15 May-17 May A. Middle Latitudes Active 25/20/15 Minor storm 10/10/05 Major-severe storm 05/01/01 B. High Latitudes Active 25/20/20 Minor storm 10/05/05 Major-severe storm 05/01/01