:Product: 20040304RSGA.txt :Issued: 2004 Mar 04 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 064 Issued at 2200Z on 04 Mar 2004 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity was at low levels today. Region 567 (S12W29) produced multiple low level B and C-class flares throughout the period. The largest event was a C2 x-ray flare that occurred at 04/1007Z. A weak delta magnetic structure has become evident in a cluster of intermediate sunspots near region center. An emerging flux region, Region 569 (S11E34) with several rapidly developing umbra, was assigned today. The remainder of the disk and limb were quiet today. IB. Solar Activity Forecast: Solar activity is expected to be at low levels. Region 567 is capable of producing an isolated low level M-class event. IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: The geomagnetic field was at quiet to unsettled levels. The high speed solar wind stream has been on a steady decline since the middle of the period (from 600 to near 450 km/s at the time of this writing). The greater than 2 MeV electron fluxes at geosynchronous orbit reached high levels today. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at predominantly quiet to unsettled levels throughout the period. III. Event Probabilities 05 Mar-07 Mar Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 04 Mar 098 Predicted 05 Mar-07 Mar 105/110/110 90 Day Mean 04 Mar 111 V. Geomagnetic A Indices Observed Afr/Ap 03 Mar 008/015 Estimated Afr/Ap 04 Mar 008/010 Predicted Afr/Ap 05 Mar-07 Mar 008/010-007/008-005/008 VI. Geomagnetic Activity Probabilities 05 Mar-07 Mar A. Middle Latitudes Active 15/15/15 Minor storm 05/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/20/20 Minor storm 10/05/05 Major-severe storm 01/01/01