Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 10 Jan 17:02

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 10 Issued at 2200Z on 10 Jan 2018

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 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 (11 Jan, 12 Jan, 13 Jan).

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 504 km/s at 09/2204Z. Total IMF reached 7 nT at 10/0057Z. The maximum southward component of Bz reached -3 nT at 10/0944Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and two (11 Jan, 12 Jan) and quiet to active levels on day three (13 Jan).

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

IV. Penticton 10.7 cm Flux Observed 10 Jan 070 Predicted 11 Jan-13 Jan 070/070/070 90 Day Mean 10 Jan 072

V. Geomagnetic A Indices Observed Afr/Ap 09 Jan 007/007 Estimated Afr/Ap 10 Jan 006/005 Predicted Afr/Ap 11 Jan-13 Jan 006/005-005/005-012/014

VI. Geomagnetic Activity Probabilities 11 Jan-13 Jan A. Middle Latitudes Active 10/15/30 Minor Storm 01/05/15 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/10 Minor Storm 15/20/25 Major-severe storm 10/20/45

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