:Product: 0323RSGA.txt :Issued: 2014 Mar 23 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 Solar Geophysical Activity Report and Forecast SDF Number 82 Issued at 2200Z on 23 Mar 2014 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C5 event observed at 23/0348Z from Region 2014 (S14E20). There are currently 9 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (24 Mar, 25 Mar, 26 Mar). IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 525 km/s at 23/0044Z. Total IMF reached 9 nT at 22/2129Z. The maximum southward component of Bz reached -4 nT at 23/1746Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and three (24 Mar, 26 Mar) and quiet to unsettled levels on day two (25 Mar). III. Event probabilities 24 Mar-26 Mar Class M 45/45/45 Class X 05/05/05 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 23 Mar 157 Predicted 24 Mar-26 Mar 155/155/160 90 Day Mean 23 Mar 158 V. Geomagnetic A Indices Observed Afr/Ap 22 Mar 007/004 Estimated Afr/Ap 23 Mar 007/007 Predicted Afr/Ap 24 Mar-26 Mar 009/010-008/008-011/005 VI. Geomagnetic Activity Probabilities 24 Mar-26 Mar A. Middle Latitudes Active 25/10/30 Minor Storm 05/01/10 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 25/20/30 Major-severe storm 30/20/40