Viewing archive of Wednesday, 27 August 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 Aug 27 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 239 Issued at 2200Z on 27 AUG 1997

IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z

SOLAR ACTIVITY HAS BEEN VERY LOW FOR THE PAST 24 HOURS. DEVELOPMENT IN REGION 8076 (N29E38) IS TRENDING TOWARD SIMPLIFICATION. NEW REGION 8078 (N17E27), A SMALL A-TYPE GROUP, WAS NUMBERED. THIS REGION IS EMBEDDED IN THE SAME EXTENDED PLAGE REGION AS 8076, BUT IS MAGNETICALLY SEPARATE. A 23-DEGREE-LONG FILAMENT NEAR THE NW LIMB MAY HAVE DISAPPEARED LATE ON 26 AUGUST (UNCODED REPORT). NO OTHER SIGNIFICANT DISK OR LIMB ACTIVITY WAS NOTED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN VERY LOW, WITH THE POSSIBILITY OF ISOLATED C-CLASS X-RAY ACTIVITY IN THE REGION 8076/8078 COMPLEX.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
THE GEOMAGNETIC FIELD WAS QUIET AT LOW AND MIDDLE GEOMAGNETIC LATITUDES, WITH ONE UNSETTLED PERIOD OBSERVED BETWEEN 06-09 UT AT HIGH GEOMAGNETIC LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO PERSIST AT QUIET LEVELS AT LOWER GEOMAGNETIC LATITUDES, WITH THE POSSIBILITY OF UNSETTLED CONDITIONS AT HIGHER LATITUDES.
III. Event Probabilities 28 AUG to 30 AUG
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       27 AUG 082
  Predicted   28 AUG-30 AUG  085/085/085
  90 Day Mean        27 AUG 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 26 AUG  003/003
ESTIMATED AFR/AP 27 AUG  003/005
PREDICTED AFR/AP 28 AUG-30 AUG  005/010-005/010-005/010
VI. Geomagnetic Activity Probabilities 28 AUG to 30 AUG
A. Middle Latitudes
Active05%05%10%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active10%10%15%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

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