:Product: 0325RSGA.txt :Issued: 2014 Mar 25 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 84 Issued at 2200Z on 25 Mar 2014 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 25/0610Z from Region 2010 (S14W41). There are currently 6 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 (26 Mar, 27 Mar, 28 Mar). IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 503 km/s at 25/2042Z. Total IMF reached 13 nT at 25/1938Z. The maximum southward component of Bz reached -10 nT at 25/1938Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (26 Mar) and quiet levels on days two and three (27 Mar, 28 Mar). III. Event probabilities 26 Mar-28 Mar Class M 35/35/35 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Mar 153 Predicted 26 Mar-28 Mar 155/160/160 90 Day Mean 25 Mar 159 V. Geomagnetic A Indices Observed Afr/Ap 24 Mar 004/004 Estimated Afr/Ap 25 Mar 007/009 Predicted Afr/Ap 26 Mar-28 Mar 010/012-006/005-006/005 VI. Geomagnetic Activity Probabilities 26 Mar-28 Mar A. Middle Latitudes Active 30/05/05 Minor Storm 10/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/15/15 Major-severe storm 40/05/05