Viewing archive of Wednesday, 20 May 1998

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 1998 May 20 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

:::::::::: CORRECTED COPY :::::::::: SDF Number 140 Issued at 2200Z on 20 MAY 1998

IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z

SOLAR ACTIVITY WAS LOW, BASED ON A SINGLE UNCORRELATED C1 X-RAY EVENT THAT OCCURRED AT 20/0038Z.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET TO UNSETTLED FOR THE PAST 24 HOURS. THE GREATER THAN 2 MEV ELECTRON FLUX WAS MODERATE TO HIGH.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.
III. Event Probabilities 21 MAY to 23 MAY
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       20 MAY 092
  Predicted   21 MAY-23 MAY  092/094/096
  90 Day Mean        20 MAY 109
V. Geomagnetic A Indices
OBSERVED AFR/AP 19 MAY  007/008
ESTIMATED AFR/AP 20 MAY  008/010
PREDICTED AFR/AP 21 MAY-23 MAY  010/015-010/012-010/010
VI. Geomagnetic Activity Probabilities 21 MAY to 23 MAY
A. Middle Latitudes
Active01%01%01%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active01%01%01%
Minor storm01%01%01%
Major-severe storm01%01%01%

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