Viewing archive of Tuesday, 27 February 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 Feb 27 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 058 Issued at 2200Z on 27 Feb 2007

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

Solar activity was very low. No significant activity has been observed during the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field has ranged from quiet to active. Solar wind speed has been increasing throughout the day up to about 560 km/s, indicating the arrival of a coronal hole high speed stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled for the next three days (28 February - 02 March). Isolated active periods are possible on 28 February due to the coronal hole high speed stream.
III. Event Probabilities 28 Feb to 02 Mar
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       27 Feb 075
  Predicted   28 Feb-02 Mar  075/075/075
  90 Day Mean        27 Feb 082
V. Geomagnetic A Indices
  Observed Afr/Ap 26 Feb  004/004
  Estimated     Afr/Ap 27 Feb  008/015
  Predicted    Afr/Ap 28 Feb-02 Mar  010/010-008/008-005/005
VI. Geomagnetic Activity Probabilities 28 Feb to 02 Mar
A. Middle Latitudes
Active15%15%10%
Minor storm10%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active20%20%15%
Minor storm10%05%05%
Major-severe storm01%01%01%

All times in UTC

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