Viewing archive of Monday, 10 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 10 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 041 Issued at 2200Z on 10 FEB 1997

IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z

SOLAR ACTIVITY REMAINED VERY LOW. THE DISK BECAME SPOTLESS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN VERY LOW FOR THE NEXT THREE DAYS.
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
THE GEOMAGNETIC FIELD WAS GENERALLY UNSETTLED TO ACTIVE. ISOLATED PERIODS OF MINOR STORMING OCCURRED AT MID LATITUDES AND SOME HIGH LATITUDE SITES EXPERIENCED OCCASIONAL MAJOR STORM CONDITIONS. SOLAR WIND DATA INDICATED A MAGNETIC CLOUD PASSED THE L1 POSITION NEAR 09/1230Z. THE BZ COMPONENT OF THE FIELD WAS OBSERVED ON 10 FEB TO SLOWLY CROSS FROM 6 NT SOUTHWARD TO ZERO NEAR 10/1845Z IMPLYING THE MIDDLE OF THE CLOUD WAS PASSING THE EARTH AROUND THAT TIME. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ORBIT REACHED HIGH LEVELS NEAR 10/0945Z AND ROSE QUICKLY TO VERY HIGH LEVELS AT ABOUT 10/1400Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS FORECAST TO BE PREDOMINANTLY UNSETTLED TO ACTIVE FOR 11 FEB. BRIEF MINOR AND MAJOR STORM PERIODS ARE POSSIBLE DURING THAT TIME AS THE MAGNETIC CLOULD COMPLETES ITS TRANSIT PAST THE EARTH. UNSETTLED TO ACTIVE LEVELS ARE FORECAST FOR 12 FEB BECOMING MOSTLY QUIET BY 13 FEB.
III. Event Probabilities 11 FEB to 13 FEB
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       10 FEB 072
  Predicted   11 FEB-13 FEB  072/072/072
  90 Day Mean        10 FEB 078
V. Geomagnetic A Indices
OBSERVED AFR/AP 09 FEB  017/016
ESTIMATED AFR/AP 10 FEB  018/018
PREDICTED AFR/AP 11 FEB-13 FEB  015/027-010/020-005/010
VI. Geomagnetic Activity Probabilities 11 FEB to 13 FEB
A. Middle Latitudes
Active35%15%10%
Minor storm10%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active40%20%15%
Minor storm15%10%05%
Major-severe storm05%01%01%

All times in UTC

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