Viewing archive of Sunday, 8 April 2018

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 2018 Apr 08 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 98 Issued at 2200Z on 08 Apr 2018

IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z

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 (09 Apr, 10 Apr, 11 Apr).
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 392 km/s at 07/2245Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 488 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on day one (09 Apr) and quiet to minor storm levels on days two and three (10 Apr, 11 Apr).
III. Event Probabilities 09 Apr to 11 Apr
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       08 Apr 068
  Predicted   09 Apr-11 Apr 067/067/067
  90 Day Mean        08 Apr 070

V. Geomagnetic A Indices
  Observed Afr/Ap 07 Apr  004/004
  Estimated     Afr/Ap 08 Apr  004/005
  Predicted    Afr/Ap 09 Apr-11 Apr  008/008-015/018-014/018

VI. Geomagnetic Activity Probabilities 09 Apr to 11 Apr
A. Middle Latitudes
Active15%40%40%
Minor storm05%25%25%
Major-severe storm01%05%05%
B. High Latitudes
Active15%10%10%
Minor storm25%30%30%
Major-severe storm25%55%55%

All times in UTC

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