:Product: 0402RSGA.txt :Issued: 2014 Apr 02 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 92 Issued at 2200Z on 02 Apr 2014 IA. Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity has been at high levels for the past 24 hours. The largest solar event of the period was a M6 event observed at 02/1405Z from Region 2027 (N12E42). There are currently 7 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 (03 Apr, 04 Apr, 05 Apr). IIA. Geophysical Activity Summary 01/2100Z to 02/2100Z: 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 496 km/s at 02/0355Z. Total IMF reached 6 nT at 01/2331Z. The maximum southward component of Bz reached -4 nT at 01/2149Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and two (03 Apr, 04 Apr) and quiet to active levels on day three (05 Apr). Protons have a slight chance of crossing threshold on days one, two, and three (03 Apr, 04 Apr, 05 Apr). III. Event probabilities 03 Apr-05 Apr Class M 40/40/40 Class X 05/05/05 Proton 20/20/20 PCAF green IV. Penticton 10.7 cm Flux Observed 02 Apr 155 Predicted 03 Apr-05 Apr 155/160/160 90 Day Mean 02 Apr 159 V. Geomagnetic A Indices Observed Afr/Ap 01 Apr 005/005 Estimated Afr/Ap 02 Apr 004/005 Predicted Afr/Ap 03 Apr-05 Apr 006/005-005/005-014/018 VI. Geomagnetic Activity Probabilities 03 Apr-05 Apr A. Middle Latitudes Active 05/05/30 Minor Storm 01/01/15 Major-severe storm 01/01/05 B. High Latitudes Active 15/15/10 Minor Storm 10/15/25 Major-severe storm 01/05/45