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Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 23 June 2020

Status Report From: Space Weather Prediction Center (NOAA)
Posted: Tuesday, June 23, 2020

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 175 Issued at 2200Z on 23 Jun 2020 IA. Analysis of Solar Active Regions and Activity from 22/2100Z to 23/2100Z: 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 (24 Jun, 25 Jun, 26 Jun). IIA. Geophysical Activity Summary 22/2100Z to 23/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 308 km/s at 23/1304Z. Total IMF reached 5 nT at 23/2015Z. The maximum southward component of Bz reached -5 nT at 23/2002Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 150 pfu.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one, two, and three (24 Jun, 25 Jun, 26 Jun). III. Event probabilities 24 Jun-26 Jun Class M 01/01/01 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 23 Jun 067 Predicted 24 Jun-26 Jun 068/068/068 90 Day Mean 23 Jun 070 V. Geomagnetic A Indices Observed Afr/Ap 22 Jun 003/003 Estimated Afr/Ap 23 Jun 004/005 Predicted Afr/Ap 24 Jun-26 Jun 006/005-006/005-005/005 VI. Geomagnetic Activity Probabilities 24 Jun-26 Jun A. Middle Latitudes Active 05/05/05 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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