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Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 28 March 2020

Status Report From: Space Weather Prediction Center (NOAA)
Posted: Saturday, March 28, 2020

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 88 Issued at 2200Z on 28 Mar 2020 IA. Analysis of Solar Active Regions and Activity from 27/2100Z to 28/2100Z: 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 lowon days one, two, and three (29 Mar, 30 Mar, 31 Mar). IIA. Geophysical Activity Summary 27/2100Z to 28/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reach ed a peak of 418 km/s at 27/2104Z. Total IMF reached 5 nT at 28/1950Z. The maximum southward component of Bz reached -3 nT at 28/2034Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 481 pfu.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on day one (29 Mar) and quiet to active levels on days two and three (30 Mar, 31 Mar). III. Event probabilities 29 Mar-31 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 28 Mar 069 Predicted 29 Mar-31 Mar 069/069/069 90 Day Mean 28 Mar 071 V. Geomagnetic A Indices Observed Afr/Ap 27 Mar 004/004 Estimated Afr/Ap 28 Mar 004/004 Predicted Afr/Ap 29 Mar-31 Mar 006/005-009/012-010/012 VI. Geomagnetic Activity Probabilities 29 Mar-31 Mar A. Middle Latitudes Active 10/40/35 Minor Storm 01/15/15 Major-severe storm 01/01/01 B. High Latitudes Active 15/10/10 Minor Storm 15/30/30 Major-severe storm 10/55/50


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