Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 30 Oct 2017

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 303 Issued at 2200Z on 30 Oct 2017

IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: 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 slight chance for a C-class flare on day one (31 Oct) and expected to be very low on days two and three (01 Nov, 02 Nov).

IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 328 km/s at 29/2105Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 3668 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (31 Oct), quiet to unsettled levels on day two (01 Nov) and quiet to active levels on day three (02 Nov).

III. Event probabilities 31 Oct-02 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 30 Oct 076 Predicted 31 Oct-02 Nov 075/074/073 90 Day Mean 30 Oct 082

V. Geomagnetic A Indices Observed Afr/Ap 29 Oct 003/004 Estimated Afr/Ap 30 Oct 003/004 Predicted Afr/Ap 31 Oct-02 Nov 006/005-006/006-010/015

VI. Geomagnetic Activity Probabilities 31 Oct-02 Nov A. Middle Latitudes Active 10/10/30 Minor Storm 05/05/15 Major-severe storm 01/01/05 B. High Latitudes Active 15/20/20 Minor Storm 15/20/25 Major-severe storm 15/15/30

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