Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 1 Dec 2017

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 335 Issued at 2200Z on 01 Dec 2017

IA. Analysis of Solar Active Regions and Activity from 30/2100Z to 01/2100Z: 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 (02 Dec, 03 Dec, 04 Dec).

IIA. Geophysical Activity Summary 30/2100Z to 01/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 546 km/s at 01/0159Z. Total IMF reached 9 nT at 30/2248Z. The maximum southward component of Bz reached -5 nT at 01/0335Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 186 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and two (02 Dec, 03 Dec) and quiet to major storm levels on day three (04 Dec).

III. Event probabilities 02 Dec-04 Dec Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 01 Dec 070 Predicted 02 Dec-04 Dec 070/070/070 90 Day Mean 01 Dec 080

V. Geomagnetic A Indices Observed Afr/Ap 30 Nov 009/008 Estimated Afr/Ap 01 Dec 006/006 Predicted Afr/Ap 02 Dec-04 Dec 006/005-006/005-022/032

VI. Geomagnetic Activity Probabilities 02 Dec-04 Dec A. Middle Latitudes Active 10/10/25 Minor Storm 01/01/30 Major-severe storm 01/01/20 B. High Latitudes Active 15/15/10 Minor Storm 20/20/20 Major-severe storm 15/15/65

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