Viewing archive of Saturday, 31 October 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 Oct 31 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 304 Issued at 2200Z on 31 OCT 1998

IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z

SOLAR ACTIVITY WAS VERY LOW. REGION 8375 (N17E45) IS THE DOMINANT FEATURE ON AN OTHERWISE DULL DISK. THE OTHER FOUR SPOTTED REGIONS ARE SMALL AND SIMPLE. THE LIMBS WERE QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
THE GEOMAGNETIC FIELD WAS QUIET. ENERGETIC ELECTRONS AT GEOSYNCHRONOUS ORBIT REMAINED AT HIGH LEVELS.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 01 NOV to 03 NOV
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       31 OCT 119
  Predicted   01 NOV-03 NOV  125/125/125
  90 Day Mean        31 OCT 131
V. Geomagnetic A Indices
OBSERVED AFR/AP 30 OCT  004/005
ESTIMATED AFR/AP 31 OCT  003/008
PREDICTED AFR/AP 01 NOV-03 NOV  005/008-005/008-010/008
VI. Geomagnetic Activity Probabilities 01 NOV to 03 NOV
A. Middle Latitudes
Active10%10%20%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%25%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

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