Viewing archive of Wednesday, 24 June 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 Jun 24 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 175 Issued at 2200Z on 24 JUN 1998

IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z

SOLAR ACTIVITY WAS LOW. ONLY THREE SPOTTED REGIONS ARE CURRENTLY ON THE DISC WITH MOST ACTIVITY COMING FROM REGION 8253 (N18E54). THIS REGION PRODUCED SEVERAL B AND C-CLASS EVENTS WITH CORRESPONDING OPTICAL SUB FLARES. THE REST OF THE DISK HAS BEEN STABLE AND UNREMARKABLE.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE WITH CONTINUED C-CLASS AND POSSIBLE ISOLATED M-CLASS EVENTS FROM REGION 8253.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET TO ACTIVE WITH ONE PERIOD OF MINOR STORM LEVEL ACTIVITY (K=5) OCCURRING AT 23/2100-2400UT.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO ACTIVE.
III. Event Probabilities 25 JUN to 27 JUN
Class M10%10%10%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       24 JUN 105
  Predicted   25 JUN-27 JUN  100/100/100
  90 Day Mean        24 JUN 107
V. Geomagnetic A Indices
OBSERVED AFR/AP 23 JUN  008/010
ESTIMATED AFR/AP 24 JUN  015/018
PREDICTED AFR/AP 25 JUN-27 JUN  010/015-010/015-005/008
VI. Geomagnetic Activity Probabilities 25 JUN to 27 JUN
A. Middle Latitudes
Active20%20%20%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active25%25%25%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

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