Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 10 Oct 18:01

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 283 Issued at 2200Z on 10 Oct 2017

IA. Analysis of Solar Active Regions and Activity from 09/2100Z to 10/2100Z: 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 (11 Oct, 12 Oct, 13 Oct).

IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 355 km/s at 10/2016Z. Total IMF reached 6 nT at 10/2031Z. The maximum southward component of Bz reached -3 nT at 10/2000Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 534 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at active to minor storm levels on days one and three (11 Oct, 13 Oct) and unsettled to minor storm levels on day two (12 Oct).

III. Event probabilities 11 Oct-13 Oct Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 10 Oct 071 Predicted 11 Oct-13 Oct 071/071/071 90 Day Mean 10 Oct 083

V. Geomagnetic A Indices Observed Afr/Ap 09 Oct 002/001 Estimated Afr/Ap 10 Oct 006/008 Predicted Afr/Ap 11 Oct-13 Oct 020/030-023/030-024/035

VI. Geomagnetic Activity Probabilities 11 Oct-13 Oct A. Middle Latitudes Active 35/35/35 Minor Storm 30/30/30 Major-severe storm 15/15/15 B. High Latitudes Active 05/05/05 Minor Storm 20/20/20 Major-severe storm 70/70/70

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