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Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 25 March 2020

Status Report From: Space Weather Prediction Center (NOAA)
Posted: Wednesday, March 25, 2020

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 85 Issued at 2200Z on 25 Mar 2020 IA. Analysis of Solar Active Regions and Activity from 24/2100Z to 25/2100Z: 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 (26 Mar, 27 Mar, 28 Mar). IIA. Geophysical Activity Summary 24/2100Z to 25/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 431 km/s at 24/2251Z. Total IMF reached 6 nT at 25/0129Z. The maximum southward component of Bz reached -3 nT at 24/2331Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1398 pfu.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (26 Mar, 27 Mar, 28 Mar). III. Event probabilities 26 Mar-28 Mar Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 25 Mar 071 Predicted 26 Mar-28 Mar 071/071/071 90 Day Mean 25 Mar 071 V. Geomagnetic A Indices Observed Afr/Ap 24 Mar 004/005 Estimated Afr/Ap 25 Mar 003/004 Predicted Afr/Ap 26 Mar-28 Mar 006/005-006/005-006/005 VI. Geomagnetic Activity Probabilities 26 Mar-28 Mar A. Middle Latitudes Active 10/10/10 Minor Storm 01/01/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 15/15/15 Major-severe storm 10/10/10


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