Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 19 January 2020

Status Report From: Space Weather Prediction Center (NOAA)
Posted: Sunday, January 19, 2020

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 19 Issued at 2200Z on 19 Jan 2020 IA. Analysis of Solar Active Regions and Activity from 18/2100Z to 19/2100Z: 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 (20 Jan, 21 Jan, 22 Jan). IIA. Geophysical Activity Summary 18/2100Z to 19/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 366 km/s at 19/0717Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 179 pfu.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on days one and two (20 Jan, 21 Jan) and quiet to unsettled levels on day three (22 Jan). III. Event probabilities 20 Jan-22 Jan Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 19 Jan 072 Predicted 20 Jan-22 Jan 072/072/072 90 Day Mean 19 Jan 071 V. Geomagnetic A Indices Observed Afr/Ap 18 Jan 003/003 Estimated Afr/Ap 19 Jan 003/005 Predicted Afr/Ap 20 Jan-22 Jan 008/012-010/012-010/010 VI. Geomagnetic Activity Probabilities 20 Jan-22 Jan A. Middle Latitudes Active 25/25/20 Minor Storm 10/10/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 30/30/25 Major-severe storm 40/40/25

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