:Product: 0224RSGA.txt :Issued: 2014 Feb 24 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 55 Issued at 2200Z on 24 Feb 2014 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 24/1205Z. There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (25 Feb, 26 Feb, 27 Feb). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 589 km/s at 24/0550Z. Total IMF reached 9 nT at 23/2224Z. The maximum southward component of Bz reached -3 nT at 23/2101Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (25 Feb, 27 Feb) and quiet levels on day two (26 Feb). III. Event probabilities 25 Feb-27 Feb Class M 60/60/60 Class X 10/10/10 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Feb 171 Predicted 25 Feb-27 Feb 175/180/180 90 Day Mean 24 Feb 157 V. Geomagnetic A Indices Observed Afr/Ap 23 Feb 012/017 Estimated Afr/Ap 24 Feb 008/007 Predicted Afr/Ap 25 Feb-27 Feb 009/008-006/005-007/007 VI. Geomagnetic Activity Probabilities 25 Feb-27 Feb A. Middle Latitudes Active 10/05/15 Minor Storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/15/25 Major-severe storm 20/05/25