:Product: 0330RSGA.txt :Issued: 2007 Mar 30 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 089 Issued at 2200Z on 30 Mar 2007 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity was very low. No flares occurred during the past 24 hours. IB. Solar Activity Forecast: Solar activity is expected to be very low. IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field was mostly quiet during the past 24 hours. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet tomorrow (31 March). An increase to unsettled to active with a chance for minor storm periods is expected, beginning late on the second day (1 April) and continuing through the third day (2 April). The increase is expected in response to a favorably positioned coronal hole. III. Event Probabilities 31 Mar-02 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF Green IV. Penticton 10.7 cm Flux Observed 30 Mar 074 Predicted 31 Mar-02 Apr 074/074/074 90 Day Mean 30 Mar 078 V. Geomagnetic A Indices Observed Afr/Ap 29 Mar 002/002 Estimated Afr/Ap 30 Mar 005/005 Predicted Afr/Ap 31 Mar-02 Apr 005/005-007/010-015/025 VI. Geomagnetic Activity Probabilities 31 Mar-02 Apr A. Middle Latitudes Active 15/20/30 Minor storm 05/10/20 Major-severe storm 01/01/05 B. High Latitudes Active 15/25/35 Minor storm 05/15/25 Major-severe storm 01/05/10