:Product: 0430RSGA.txt :Issued: 2014 Apr 30 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 120 Issued at 2200Z on 30 Apr 2014 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: 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 30/0620Z from Region 2049 (S07E29). There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (01 May, 02 May, 03 May). IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been at unsettled to active levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 330 km/s at 30/2049Z. Total IMF reached 10 nT at 30/1946Z. The maximum southward component of Bz reached -9 nT at 30/1307Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 263 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (01 May), quiet to unsettled levels on day two (02 May) and quiet levels on day three (03 May). III. Event probabilities 01 May-03 May Class M 20/20/20 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 30 Apr 124 Predicted 01 May-03 May 120/115/115 90 Day Mean 30 Apr 155 V. Geomagnetic A Indices Observed Afr/Ap 29 Apr 007/007 Estimated Afr/Ap 30 Apr 014/018 Predicted Afr/Ap 01 May-03 May 014/015-007/008-006/005 VI. Geomagnetic Activity Probabilities 01 May-03 May A. Middle Latitudes Active 40/40/05 Minor Storm 15/15/01 Major-severe storm 01/01/01 B. High Latitudes Active 10/10/15 Minor Storm 25/25/15 Major-severe storm 50/55/05