:Product: 0401RSGA.txt :Issued: 2007 Apr 01 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 091 Issued at 2200Z on 01 Apr 2007 IA. Analysis of Solar Active Regions and Activity from 31/2100Z to 01/2100Z: Solar activity has been very low. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 31/2100Z to 01/2100Z: The geomagnetic field was active with periods of minor storming due to a recurrent coronal hole high speed stream. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be unsettled to active for April 2 & 3. Periods of minor storming remain possible. On April 4 the geomagnetic field is expected to return to quiet conditions as the recurrent coronal hole rotates out of its geoeffective position. III. Event Probabilities 02 Apr-04 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 01 Apr 072 Predicted 02 Apr-04 Apr 072/072/072 90 Day Mean 01 Apr 078 V. Geomagnetic A Indices Observed Afr/Ap 31 Mar 002/003 Estimated Afr/Ap 01 Apr 016/030 Predicted Afr/Ap 02 Apr-04 Apr 014/020-012/015-005/005 VI. Geomagnetic Activity Probabilities 02 Apr-04 Apr A. Middle Latitudes Active 35/35/15 Minor storm 20/20/10 Major-severe storm 05/05/01 B. High Latitudes Active 40/40/20 Minor storm 25/25/15 Major-severe storm 10/10/05