:Product: Report of Solar-Geophysical Activity :Issued: 2010 Mar 27 2201 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 086 Issued at 2200Z on 27 Mar 2010 IA. Analysis of Solar Active Regions and Activity from 26/2100Z to 27/2100Z: Solar activity was low. Region 1057 (N15E16) produced several C-class flares during the period. New Region 1059 (S21E73) was numbered today as an H-type spot group. IB. Solar Activity Forecast: Solar activity is expected to remain low with C-class flares expected and a slight chance for a M-class flare over the next 3 days (28-30 March). IIA. Geophysical Activity Summary 26/2100Z to 27/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to remain quiet over the next 3 days (28-30 March). III. Event Probabilities 28 Mar-30 Mar Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 27 Mar 088 Predicted 28 Mar-30 Mar 088/090/090 90 Day Mean 27 Mar 082 V. Geomagnetic A Indices Observed Afr/Ap 26 Mar 002/004 Estimated Afr/Ap 27 Mar 003/005 Predicted Afr/Ap 28 Mar-30 Mar 005/005-005/005-005/007 VI. Geomagnetic Activity Probabilities 28 Mar-30 Mar A. Middle Latitudes Active 20/20/20 Minor storm 05/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 25/25/25 Minor storm 10/10/10 Major-severe storm 01/01/01