Viewing archive of Wednesday, 17 December 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 Dec 17 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 351 Issued at 2200Z on 17 DEC 1997

IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z

SOLAR ACTIVITY WAS VERY LOW. ISOLATED, OPTICALLY UNCORRELATED X-RAY FLARES OCCURRED. REGION 8123 (N19E20) STABILIZED AS A SMALL D-TYPE SPOT GROUP.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. SMALL FLARES COULD OCCUR WITHIN REGION 8123.
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
THE GEOMAGNETIC FIELD WAS QUIET AT ALL LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 18 DEC to 20 DEC
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       17 DEC 086
  Predicted   18 DEC-20 DEC  084/082/082
  90 Day Mean        17 DEC 093
V. Geomagnetic A Indices
OBSERVED AFR/AP 16 DEC  004/003
ESTIMATED AFR/AP 17 DEC  003/005
PREDICTED AFR/AP 18 DEC-20 DEC  005/010-010/010-010/010
VI. Geomagnetic Activity Probabilities 18 DEC to 20 DEC
A. Middle Latitudes
Active10%10%10%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active10%10%15%
Minor storm01%01%05%
Major-severe storm01%01%01%

All times in UTC

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