Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 10 Mar 17:01

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 69 Issued at 2200Z on 10 Mar 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 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 (11 Mar, 12 Mar, 13 Mar).

IIA. Geophysical Activity Summary 09/2100Z to 10/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 461 km/s at 09/2227Z. Total IMF reached 15 nT at 10/1540Z. The maximum southward component of Bz reached -12 nT at 10/0055Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 165 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (11 Mar) and quiet levels on days two and three (12 Mar, 13 Mar).

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

IV. Penticton 10.7 cm Flux Observed 10 Mar 068 Predicted 11 Mar-13 Mar 068/068/068 90 Day Mean 10 Mar 071

V. Geomagnetic A Indices Observed Afr/Ap 09 Mar 010/009 Estimated Afr/Ap 10 Mar 013/015 Predicted Afr/Ap 11 Mar-13 Mar 012/008-006/005-006/005

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


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