Viewing archive of Friday, 13 September 2019

Solar activity report

Report of Solar-Geophysical Activity 2019 Sep 13 2200 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 256 Issued at 2200Z on 13 Sep 2019

IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z

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 (14 Sep, 15 Sep, 16 Sep).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 527 km/s at 13/0455Z. Total IMF reached 9 nT at 13/1605Z. The maximum southward component of Bz reached -6 nT at 13/0604Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 2656 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (14 Sep, 15 Sep, 16 Sep).
III. Event Probabilities 14 Sep to 16 Sep
Class M01%01%01%
Class X01%01%01%
IV. Penticton 10.7 cm Flux
  Observed       13 Sep 068
  Predicted   14 Sep-16 Sep 068/068/068
  90 Day Mean        13 Sep 067

V. Geomagnetic A Indices
  Observed Afr/Ap 12 Sep  007/006
  Estimated     Afr/Ap 13 Sep  007/008
  Predicted    Afr/Ap 14 Sep-16 Sep  008/008-008/008-008/008

VI. Geomagnetic Activity Probabilities 14 Sep to 16 Sep
A. Middle Latitudes
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Minor storm20%20%20%
Major-severe storm20%20%20%

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