Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 24 Nov 2017

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 328 Issued at 2200Z on 24 Nov 2017

IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: 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 (25 Nov, 26 Nov, 27 Nov).

IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 409 km/s at 24/1905Z. Total IMF reached 8 nT at 24/1710Z. The maximum southward component of Bz reached -7 nT at 24/1726Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 2976 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and three (25 Nov, 27 Nov) and quiet levels on day two (26 Nov).

III. Event probabilities 25 Nov-27 Nov Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 24 Nov 074 Predicted 25 Nov-27 Nov 073/073/071 90 Day Mean 24 Nov 081

V. Geomagnetic A Indices Observed Afr/Ap 23 Nov 007/008 Estimated Afr/Ap 24 Nov 008/009 Predicted Afr/Ap 25 Nov-27 Nov 009/010-006/005-011/015

VI. Geomagnetic Activity Probabilities 25 Nov-27 Nov A. Middle Latitudes Active 25/10/30 Minor Storm 10/01/15 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/15/30 Major-severe storm 25/15/50

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