Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 12 Mar 18:01

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 71 Issued at 2200Z on 12 Mar 2018

IA. Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z: 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 (13 Mar, 14 Mar, 15 Mar).

IIA. Geophysical Activity Summary 11/2100Z to 12/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 407 km/s at 12/0054Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (13 Mar) and quiet to minor storm levels on days two and three (14 Mar, 15 Mar).

III. Event probabilities 13 Mar-15 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 12 Mar 068 Predicted 13 Mar-15 Mar 068/068/068 90 Day Mean 12 Mar 071

V. Geomagnetic A Indices Observed Afr/Ap 11 Mar 007/005 Estimated Afr/Ap 12 Mar 003/004 Predicted Afr/Ap 13 Mar-15 Mar 008/008-015/018-014/018

VI. Geomagnetic Activity Probabilities 13 Mar-15 Mar A. Middle Latitudes Active 25/35/35 Minor Storm 10/25/25 Major-severe storm 01/05/05 B. High Latitudes Active 15/10/10 Minor Storm 25/25/25 Major-severe storm 30/55/55


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