Viewing archive of Tuesday, 19 August 2008

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 2008 Aug 19 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 232 Issued at 2200Z on 19 Aug 2008

IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z

Solar activity was very low. No flares were observed in the past 24 hours and the solar disk is spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic field was quiet to unsettled. The solar wind velocity was steadily decreasing during the past 24 hours. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled on day one (20 August), and quiet on days two and three(21-22 August).
III. Event Probabilities 20 Aug to 22 Aug
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       19 Aug 067
  Predicted   20 Aug-22 Aug  066/066/066
  90 Day Mean        19 Aug 066
V. Geomagnetic A Indices
  Observed Afr/Ap 18 Aug  015/023
  Estimated     Afr/Ap 19 Aug  012/015
  Predicted    Afr/Ap 20 Aug-22 Aug  007/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 20 Aug to 22 Aug
A. Middle Latitudes
Active10%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%

All times in UTC

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Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Whitehorse, YT
Fairbanks, AK

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Edmonton, AB, Gillam, MB, Saskatoon, SK, Yellowknife, NT
Anchorage, AK, Juneau, AK
The solar wind speed is currently high (749.1 km/sec.)
The direction of the interplanetary magnetic field is slightly South (-6.07nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-51nT)

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