Viewing archive of Tuesday, 24 February 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 Feb 24 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 055 Issued at 2200Z on 24 Feb 2009

IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z

Solar activity was very low. A new cycle sunspot group was numbered today as Region 1013 (N26E20).
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic field was at quiet to unsettled conditions. Solar wind speed during the past 24 hours has averaged around 440 km/s with interplanetary Bz between +6/-6 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be predominately quiet for the next three days (25-27 February).
III. Event Probabilities 25 Feb to 27 Feb
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       24 Feb 071
  Predicted   25 Feb-27 Feb  070/070/070
  90 Day Mean        24 Feb 070
V. Geomagnetic A Indices
  Observed Afr/Ap 23 Feb  003/005
  Estimated     Afr/Ap 24 Feb  005/005
  Predicted    Afr/Ap 25 Feb-27 Feb  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 25 Feb to 27 Feb
A. Middle Latitudes
Active05%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active10%10%10%
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

Gillam, MB, Yellowknife, NT

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

Edmonton, AB, Iqaluit, NU, Saskatoon, SK
Nuuk
Juneau, AK
A southern hemisphere coronal hole was detected in an earth-facing position on Tuesday, 8 April 2025

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