Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 6 Apr 2018

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 96 Issued at 2200Z on 06 Apr 2018

IA. Analysis of Solar Active Regions and Activity from 05/2100Z to 06/2100Z: 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 (07 Apr, 08 Apr, 09 Apr).

IIA. Geophysical Activity Summary 05/2100Z to 06/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 455 km/s at 05/2324Z. Total IMF reached 8 nT at 05/2103Z. The maximum southward component of Bz reached -2 nT at 06/1647Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 435 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (07 Apr, 08 Apr, 09 Apr).

III. Event probabilities 07 Apr-09 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 06 Apr 067 Predicted 07 Apr-09 Apr 067/067/067 90 Day Mean 06 Apr 070

V. Geomagnetic A Indices Observed Afr/Ap 05 Apr 008/007 Estimated Afr/Ap 06 Apr 005/005 Predicted Afr/Ap 07 Apr-09 Apr 006/005-006/005-005/005

VI. Geomagnetic Activity Probabilities 07 Apr-09 Apr A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 15/15/15 Major-severe storm 15/15/15

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