Viewing archive of Tuesday, 28 October 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 Oct 28 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 301 Issued at 2200Z on 28 OCT 1997

IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z

SOLAR ACTIVITY WAS LOW. REGION 8100 (S20E55) PRODUCED BOTH OF THE DAY'S C-CLASS FLARES, A C2/0N AT 0338Z, AND A C5/1F AT 1256Z. THE REGION APPEARS TO BE SIMPLE MAGNETICALLY, CONSISTING OF 9 SPOTS OCCUPYING 130 MILLIONTHS.
IB. Solar Activity Forecast
SOALR ACTIVITY IS EXPECTED TO BE LOW. REGION 8100 SHOULD CONTINUE TO YIELD THE OCCASIONAL C-CLASS FLARE.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
THE GEOMAGNETIC FIELD VARIED FROM QUIET TO ACTIVE. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT ATTAINED HIGH LEVELS NEAR 1930Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED THROUGHOUT THE INTERVAL.
III. Event Probabilities 29 OCT to 31 OCT
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       28 OCT 086
  Predicted   29 OCT-31 OCT  085/085/090
  90 Day Mean        28 OCT 087
V. Geomagnetic A Indices
OBSERVED AFR/AP 27 OCT  015/015
ESTIMATED AFR/AP 28 OCT  010/010
PREDICTED AFR/AP 29 OCT-31 OCT  005/010-005/015-005/010
VI. Geomagnetic Activity Probabilities 29 OCT to 31 OCT
A. Middle Latitudes
Active10%20%10%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active20%25%20%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

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