Viewing archive of Thursday, 18 July 2019

Solar activity report

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2019 Jul 18 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 199 Issued at 2200Z on 18 Jul 2019

IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z

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 (19 Jul, 20 Jul, 21 Jul).
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 420 km/s at 18/0306Z. Total IMF reached 6 nT at 18/1528Z. The maximum southward component of Bz reached -3 nT at 18/1828Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1918 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet levels on days one, two, and three (19 Jul, 20 Jul, 21 Jul).
III. Event Probabilities 19 Jul to 21 Jul
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       18 Jul 067
  Predicted   19 Jul-21 Jul 068/068/068
  90 Day Mean        18 Jul 069

V. Geomagnetic A Indices
  Observed Afr/Ap 17 Jul  008/007
  Estimated     Afr/Ap 18 Jul  004/004
  Predicted    Afr/Ap 19 Jul-21 Jul  006/005-006/005-006/005

VI. Geomagnetic Activity Probabilities 19 Jul to 21 Jul
A. Middle Latitudes
Active10%15%10%
Minor storm05%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm20%20%20%
Major-severe storm20%15%15%

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