Viewing archive of Saturday, 18 July 2009

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 2009 Jul 18 2201 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 2009

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

Solar activity was very low. No flares occurred as the disk remains spotless.
IB. Solar Activity Forecast
Solar activity will continue very low.
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field will be quiet early in the interval, then become increasingly disturbed when a recurrent high-speed stream returns. Unsettled to active conditions are anticipated by July 21.
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  067/067/067
  90 Day Mean        18 Jul 069
V. Geomagnetic A Indices
  Observed Afr/Ap 17 Jul  000/002
  Estimated     Afr/Ap 18 Jul  000/005
  Predicted    Afr/Ap 19 Jul-21 Jul  005/005-005/008-015/018
VI. Geomagnetic Activity Probabilities 19 Jul to 21 Jul
A. Middle Latitudes
Active05%05%25%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active05%05%35%
Minor storm01%01%05%
Major-severe storm01%01%01%

All times in UTC

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