Viewing archive of Thursday, 30 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 30 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 211 Issued at 2200Z on 30 Jul 2009

IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z

Solar activity was very low. No flares occurred during the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled with a slight chance for isolated active periods on days one and two (31 July - 01 August) due to a favorably positioned coronal hole. Quiet conditions are expected to return on the third day (02 August).
III. Event Probabilities 31 Jul to 02 Aug
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       30 Jul 068
  Predicted   31 Jul-02 Aug  068/068/068
  90 Day Mean        30 Jul 069
V. Geomagnetic A Indices
  Observed Afr/Ap 29 Jul  002/002
  Estimated     Afr/Ap 30 Jul  002/003
  Predicted    Afr/Ap 31 Jul-02 Aug  007/007-007/007-005/005
VI. Geomagnetic Activity Probabilities 31 Jul to 02 Aug
A. Middle Latitudes
Active20%20%10%
Minor storm05%05%01%
Major-severe storm01%01%01%
B. High Latitudes
Active20%20%10%
Minor storm10%10%05%
Major-severe storm05%05%01%

All times in UTC

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