Viewing archive of Friday, 21 February 1997

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 1997 Feb 21 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 052 Issued at 2200Z on 21 FEB 1997

IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z

SOLAR ACTIVITY WAS VERY LOW. A SINGLE B-CLASS X-RAY EVENT OCCURRED AT 21/1019Z. THE VISIBLE DISK IS CURRENTLY SPOTLESS AND ESSENTIALLY FEATURELESS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW.
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
THE GEOMAGNETIC FIELD HAS BEEN MOSTLY QUIET TO UNSETTLED FOR THE PAST 24 HOURS. MIDDLE LATITUDES EXPERIENCED A SINGLE PERIOD OF ACTIVE CONDITIONS DURING THE INTERVAL 21/0900-1200Z, WHILE HIGH LATITUDES RECORDED ACTIVE TO MINOR STORM CONDITIONS DURING THE INTERVAL 21/0900-1500Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY UNSETTLED FOR THE NEXT THREE DAYS, WITH AN INCREASED CHANCE FOR PERIODS OF ACTIVE CONDITIONS ON DAYS TWO AND THREE DUE TO RECURRENT ACTIVITY.
III. Event Probabilities 22 FEB to 24 FEB
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       21 FEB 073
  Predicted   22 FEB-24 FEB  073/073/073
  90 Day Mean        21 FEB 077
V. Geomagnetic A Indices
OBSERVED AFR/AP 20 FEB  004/004
ESTIMATED AFR/AP 21 FEB  010/010
PREDICTED AFR/AP 22 FEB-24 FEB  010/010-015/010-015/015
VI. Geomagnetic Activity Probabilities 22 FEB to 24 FEB
A. Middle Latitudes
Active20%30%35%
Minor storm10%15%15%
Major-severe storm01%05%05%
B. High Latitudes
Active20%30%35%
Minor storm10%15%15%
Major-severe storm01%05%05%

All times in UTC

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