Report of Solar Geophysical Activity (RSGA)

By Newsroom America Feeds at 29 Mar 2018

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 88 Issued at 2200Z on 29 Mar 2018

IA. Analysis of Solar Active Regions and Activity from 28/2100Z to 29/2100Z: 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 (30 Mar, 31 Mar, 01 Apr).

IIA. Geophysical Activity Summary 28/2100Z to 29/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 451 km/s at 29/1727Z. Total IMF reached 9 nT at 29/1702Z. The maximum southward component of Bz reached -4 nT at 29/1846Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 43686 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (30 Mar), quiet to unsettled levels on day two (31 Mar) and quiet levels on day three (01 Apr).

III. Event probabilities 30 Mar-01 Apr Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green

IV. Penticton 10.7 cm Flux Observed 29 Mar 069 Predicted 30 Mar-01 Apr 070/070/070 90 Day Mean 29 Mar 070

V. Geomagnetic A Indices Observed Afr/Ap 28 Mar 002/002 Estimated Afr/Ap 29 Mar 005/008 Predicted Afr/Ap 30 Mar-01 Apr 010/010-007/008-006/005

VI. Geomagnetic Activity Probabilities 30 Mar-01 Apr A. Middle Latitudes Active 30/15/10 Minor Storm 10/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/20/15 Minor Storm 30/25/20 Major-severe storm 35/20/15

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