Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 13 Mar 18:02

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 72 Issued at 2200Z on 13 Mar 2018

IA. Analysis of Solar Active Regions and Activity from 12/2100Z to 13/2100Z: 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 (14 Mar, 15 Mar, 16 Mar).

IIA. Geophysical Activity Summary 12/2100Z to 13/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 389 km/s at 12/2234Z. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to minor storm levels on days one and two (14 Mar, 15 Mar) and quiet to active levels on day three (16 Mar).

III. Event probabilities 14 Mar-16 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 13 Mar 069 Predicted 14 Mar-16 Mar 069/068/068 90 Day Mean 13 Mar 071

V. Geomagnetic A Indices Observed Afr/Ap 12 Mar 002/002 Estimated Afr/Ap 13 Mar 004/005 Predicted Afr/Ap 14 Mar-16 Mar 013/018-015/018-010/014

VI. Geomagnetic Activity Probabilities 14 Mar-16 Mar A. Middle Latitudes Active 35/35/35 Minor Storm 25/25/15 Major-severe storm 05/05/01 B. High Latitudes Active 10/10/15 Minor Storm 25/30/30 Major-severe storm 50/55/40


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