Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 2 Oct 2017

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 275 Issued at 2200Z on 02 Oct 2017

IA. Analysis of Solar Active Regions and Activity from 01/2100Z to 02/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 2 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low with a chance for a C-class flares on days one, two, and three (03 Oct, 04 Oct, 05 Oct).

IIA. Geophysical Activity Summary 01/2100Z to 02/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 500 km/s at 02/0502Z. Total IMF reached 5 nT at 02/2037Z. The maximum southward component of Bz reached -3 nT at 02/1339Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 28078 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (03 Oct, 04 Oct, 05 Oct).

III. Event probabilities 03 Oct-05 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 02 Oct 086 Predicted 03 Oct-05 Oct 086/086/086 90 Day Mean 02 Oct 083

V. Geomagnetic A Indices Observed Afr/Ap 01 Oct 010/011 Estimated Afr/Ap 02 Oct 008/010 Predicted Afr/Ap 03 Oct-05 Oct 005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 03 Oct-05 Oct A. Middle Latitudes Active 15/10/10 Minor Storm 05/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 20/15/15 Minor Storm 20/20/20 Major-severe storm 15/20/15

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