Viewing archive of Monday, 27 August 2007

Solar activity report

Report of Solar-Geophysical Activity 2007 Aug 27 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 239 Issued at 2200Z on 27 Aug 2007

IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z

Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field ranged from quiet to active levels. Solar wind speed increased to approximately 670 km/s due to a coronal hole high speed stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled with possible active periods on 28 August due to the coronal hole high speed stream. Quiet to unsettled conditions are expected on 29 - 30 August.
III. Event Probabilities 28 Aug to 30 Aug
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       27 Aug 069
  Predicted   28 Aug-30 Aug  070/070/070
  90 Day Mean        27 Aug 072
V. Geomagnetic A Indices
  Observed Afr/Ap 26 Aug  010/010
  Estimated     Afr/Ap 27 Aug  008/015
  Predicted    Afr/Ap 28 Aug-30 Aug  008/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 28 Aug to 30 Aug
A. Middle Latitudes
Active15%10%10%
Minor storm05%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active20%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%

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