:Product: 0326RSGA.txt :Issued: 2012 Mar 26 2200 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 26 Mar 2012 IA. Analysis of Solar Active Regions and Activity from 25/2100Z to 26/2100Z: Solar activity has been at low levels. Region 1442 (N12W01) produced a C1/Sf flare at 26/0642Z. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for an M-class flare. Old Region 1429 (N19, L=295) is expected to return late on day 2 (28 March), further increasing the possibility of an M-class event. IIA. Geophysical Activity Summary 25/2100Z to 26/2100Z: The geomagnetic field was at quiet levels. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be mostly quiet on 27 March, increasing to unsettled to active conditions on 28 and 29 March due to a solar sector boundary followed by a negative polarity coronal hole. III. Event Probabilities 27 Mar-29 Mar Class M 25/40/55 Class X 05/10/15 Proton 01/05/10 PCAF Green IV. Penticton 10.7 cm Flux Observed 26 Mar 102 Predicted 27 Mar-29 Mar 100/105/110 90 Day Mean 26 Mar 120 V. Geomagnetic A Indices Observed Afr/Ap 25 Mar 004/005 Estimated Afr/Ap 26 Mar 004/005 Predicted Afr/Ap 27 Mar-29 Mar 006/005-013/015-007/010 VI. Geomagnetic Activity Probabilities 27 Mar-29 Mar A. Middle Latitudes Active 05/35/25 Minor storm 01/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor storm 15/30/35 Major-severe storm 05/45/30