Viewing archive of Wednesday, 25 July 2007

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 2007 Jul 25 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 206 Issued at 2200Z on 25 Jul 2007

IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z

Solar activity was very low. The visible disk remains spotless.
IB. Solar Activity Forecast
Solar activity is expected to remain very low.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be unsettled to active for 26 July as a coronal hole high speed stream becomes geoeffective. On 27 July the geomagnetic field is expected to be quiet to unsettled before abating to quiet on 28 July.
III. Event Probabilities 26 Jul to 28 Jul
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       25 Jul 069
  Predicted   26 Jul-28 Jul  068/068/070
  90 Day Mean        25 Jul 074
V. Geomagnetic A Indices
  Observed Afr/Ap 24 Jul  002/002
  Estimated     Afr/Ap 25 Jul  005/005
  Predicted    Afr/Ap 26 Jul-28 Jul  010/015-005/005-005/005
VI. Geomagnetic Activity Probabilities 26 Jul to 28 Jul
A. Middle Latitudes
Active30%10%10%
Minor storm15%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active35%20%15%
Minor storm15%10%05%
Major-severe storm10%05%01%

All times in UTC

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