Viewing archive of Wednesday, 25 February 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 Feb 25 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 056 Issued at 2200Z on 25 FEB 1998

IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z

SOLAR ACTIVITY WAS VERY LOW. ISOLATED B-CLASS X-RAY BURSTS OCCURRED WITH NO OPTICAL ASSOCIATIONS. MINOR GROWTH OCCURRED IN REGION 8164 (N17W12). NEW REGION 8168 (N17W48) WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. THERE IS A FAIR CHANCE FOR AN ISOLATED C-CLASS FLARE FROM REGION 8164.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED WITH A SMALL CHANCE FOR ACTIVE PERIODS ON 28 FEBRUARY.
III. Event Probabilities 26 FEB to 28 FEB
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       25 FEB 095
  Predicted   26 FEB-28 FEB  094/092/090
  90 Day Mean        25 FEB 096
V. Geomagnetic A Indices
OBSERVED AFR/AP 24 FEB  002/003
ESTIMATED AFR/AP 25 FEB  002/003
PREDICTED AFR/AP 26 FEB-28 FEB  005/008-008/008-010/012
VI. Geomagnetic Activity Probabilities 26 FEB to 28 FEB
A. Middle Latitudes
Active10%15%20%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active10%20%25%
Minor storm05%10%15%
Major-severe storm01%01%01%

All times in UTC

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