:Product: 1004RSGA.txt :Issued: 2014 Oct 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 277 Issued at 2200Z on 04 Oct 2014 IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: 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 03/2215Z from Region 2172 (S08W91). There are currently 8 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a slight chance for an M-class flare on day one (05 Oct) and likely to be low on days two and three (06 Oct, 07 Oct). 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 416 km/s at 04/1859Z. Total IMF reached 15 nT at 04/1809Z. The maximum southward component of Bz reached -9 nT at 04/1949Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 395 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (05 Oct, 06 Oct) and quiet levels on day three (07 Oct). III. Event probabilities 05 Oct-07 Oct Class M 15/05/05 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 04 Oct 128 Predicted 05 Oct-07 Oct 125/120/120 90 Day Mean 04 Oct 133 V. Geomagnetic A Indices Observed Afr/Ap 03 Oct 003/004 Estimated Afr/Ap 04 Oct 004/005 Predicted Afr/Ap 05 Oct-07 Oct 007/010-008/008-006/005 VI. Geomagnetic Activity Probabilities 05 Oct-07 Oct A. Middle Latitudes Active 30/20/15 Minor Storm 10/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/25/20 Major-severe storm 40/25/20