:Product: 0328RSGA.txt :Issued: 2007 Mar 28 2203 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 087 Issued at 2200Z on 28 Mar 2007 IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: Solar activity was very low. Newly numbered Region 949 (N07E62) produced two B-class events, a B1 at 1344Z and a B1 at 1928Z. The region appears to be a small H-class group at this time. The remainder of the disk was quiet and stable. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field was mostly quiet to unsettled, with one active period from 0300-0600Z. Solar wind speed was initially elevated around 550-600 km/s but declined during the past 24 hours with day end values around 450 km/s. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet for the next three days (29-31 March). III. Event Probabilities 29 Mar-31 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 28 Mar 075 Predicted 29 Mar-31 Mar 075/075/075 90 Day Mean 28 Mar 078 V. Geomagnetic A Indices Observed Afr/Ap 27 Mar 009/012 Estimated Afr/Ap 28 Mar 009/010 Predicted Afr/Ap 29 Mar-31 Mar 005/005-005/005-005/005 VI. Geomagnetic Activity Probabilities 29 Mar-31 Mar A. Middle Latitudes Active 15/15/15 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/10 Minor storm 05/05/05 Major-severe storm 01/01/01