Viewing archive of Friday, 23 February 2001

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 2001 Feb 23 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 054 Issued at 2200Z on 23 Feb 2001

IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z

Solar activity was low with only two weak C-class X-ray flares. Region 9354 (S09W59) grew in size, but maintained a relatively simple magnetic configuration. No new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be low.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was quiet to active. An isolated active period occurred between 06Z and 09Z.
IIB. Geophysical Activity Forecast
Solar activity is expected to be quiet to unsettled.
III. Event Probabilities 24 Feb to 26 Feb
Class M20%20%20%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       23 Feb 145
  Predicted   24 Feb-26 Feb  145/145/140
  90 Day Mean        23 Feb 166
V. Geomagnetic A Indices
  Observed Afr/Ap 22 Feb  007/006
  Estimated     Afr/Ap 23 Feb  010/012
  Predicted    Afr/Ap 24 Feb-26 Feb  005/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 24 Feb to 26 Feb
A. Middle Latitudes
Active20%20%20%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active35%25%25%
Minor storm10%10%10%
Major-severe storm01%01%01%

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