:Product: 1005RSGA.txt :Issued: 2018 Oct 05 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 278 Issued at 2200Z on 05 Oct 2018 IA. Analysis of Solar Active Regions and Activity from 04/2100Z to 05/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (06 Oct, 07 Oct, 08 Oct). IIA. Geophysical Activity Summary 04/2100Z to 05/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 406 km/s at 05/0759Z. Total IMF reached 5 nT at 05/0745Z. The maximum southward component of Bz reached -4 nT at 04/2259Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 456 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (06 Oct), quiet to major storm levels on day two (07 Oct) and unsettled to major storm levels on day three (08 Oct). III. Event probabilities 06 Oct-08 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 05 Oct 069 Predicted 06 Oct-08 Oct 068/068/068 90 Day Mean 05 Oct 069 V. Geomagnetic A Indices Observed Afr/Ap 04 Oct 004/003 Estimated Afr/Ap 05 Oct 008/009 Predicted Afr/Ap 06 Oct-08 Oct 005/005-017/024-025/035 VI. Geomagnetic Activity Probabilities 06 Oct-08 Oct A. Middle Latitudes Active 10/35/35 Minor Storm 01/35/35 Major-severe storm 01/20/20 B. High Latitudes Active 20/05/05 Minor Storm 20/20/20 Major-severe storm 10/75/75