Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 7 Jan 2018

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 7 Issued at 2200Z on 07 Jan 2018

IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: Solar activity has been at very low levels for the past 24 hours. There are currently 1 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be very low on days one, two, and three (08 Jan, 09 Jan, 10 Jan).

IIA. Geophysical Activity Summary 06/2100Z to 07/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 305 km/s at 07/1627Z. Total IMF reached 5 nT at 07/1751Z. The maximum southward component of Bz reached -4 nT at 07/1702Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (08 Jan), quiet to unsettled levels on day two (09 Jan) and quiet levels on day three (10 Jan).

III. Event probabilities 08 Jan-10 Jan Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 07 Jan 070 Predicted 08 Jan-10 Jan 070/070/070 90 Day Mean 07 Jan 072

V. Geomagnetic A Indices Observed Afr/Ap 06 Jan 002/002 Estimated Afr/Ap 07 Jan 008/008 Predicted Afr/Ap 08 Jan-10 Jan 010/012-007/008-005/005

VI. Geomagnetic Activity Probabilities 08 Jan-10 Jan A. Middle Latitudes Active 30/15/10 Minor Storm 10/05/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/15 Minor Storm 30/25/20 Major-severe storm 40/20/15

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