Solar activity report

Viewing archive of Saturday, 24 February 2001

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 24 2200 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 2001

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

Solar activity was low with only two weak C-class X-ray flares. No new regions were numbered today.

IB. Solar Activity Forecast

Solar activity is expected to be low.

IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z

The geomagnetic field was quiet to unsettled.

IIB. Geophysical Activity Forecast

The geomagnetic field is expected to be predominantly quiet to unsettled. Fingers of a southern coronal hole extend far enough north to bring a increase in solar wind speeds by late on day two.

III. Event Probabilities 25 Feb to 27 Feb

Class M	10%	10%	20%
Class X	01%	01%	01%
Proton	01%	01%	01%
PCAF	green

IV. Penticton 10.7 cm Flux

  Observed       24 Feb 137
  Predicted   25 Feb-27 Feb  140/135/135
  90 Day Mean        24 Feb 166

V. Geomagnetic A Indices

  Observed Afr/Ap 23 Feb  009/011
  Estimated     Afr/Ap 24 Feb  007/007
  Predicted    Afr/Ap 25 Feb-27 Feb  005/005-005/005-008/008

VI. Geomagnetic Activity Probabilities 25 Feb to 27 Feb

A. Middle Latitudes
Active	20%	20%	20%
Minor storm	05%	05%	10%
Major-severe storm	01%	01%	01%

B. High Latitudes
Active	25%	25%	25%
Minor storm	10%	10%	10%
Major-severe storm	01%	01%	01%

All times in UTC

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