:Product: 0204RSGA.txt :Issued: 2014 Feb 04 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 35 Issued at 2200Z on 04 Feb 2014 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity has been at high levels for the past 24 hours. The largest solar event of the period was a M5 event observed at 04/0400Z from Region 1967 (S12W24). There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be moderate with a chance for X-class flares on days one, two, and three (05 Feb, 06 Feb, 07 Feb). IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: 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 380 km/s at 04/2055Z. Total IMF reached 9 nT at 04/1318Z. The maximum southward component of Bz reached -5 nT at 04/0203Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (05 Feb, 06 Feb, 07 Feb). Protons have a slight chance of crossing threshold on days one, two, and three (05 Feb, 06 Feb, 07 Feb). III. Event probabilities 05 Feb-07 Feb Class M 80/80/80 Class X 50/50/50 Proton 10/10/10 PCAF green IV. Penticton 10.7 cm Flux Observed 04 Feb 188 Predicted 05 Feb-07 Feb 185/180/180 90 Day Mean 04 Feb 154 V. Geomagnetic A Indices Observed Afr/Ap 03 Feb 005/005 Estimated Afr/Ap 04 Feb 008/008 Predicted Afr/Ap 05 Feb-07 Feb 006/005-006/005-006/005 VI. Geomagnetic Activity Probabilities 05 Feb-07 Feb A. Middle Latitudes Active 05/05/05 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 15/15/15 Major-severe storm 05/05/05