Viewing archive of Friday, 20 September 1996

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 1996 Sep 20 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 264 Issued at 2200Z on 20 SEP 1996

IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z

SOLAR ACTIVITY WAS VERY LOW. THERE WAS NO SOLAR ACTIVITY OF NOTE, EXCEPT THE DISAPPEARANCE OF A SMALL FILAMENT IN THE SOUTHEASTERN QUADRANT.THE DISK REMAINS SPOTLESS.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW FOR THE ENTIRE FORECAST PERIOD.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
THE GEOMAGNETIC FIELD HAS BEEN AT UNSETTLED TO MINOR STORM. RECENT SOLAR WIND DATA INDICATES A LOW DENSITY, HIGH SPEED SOLAR WIND STREAM. ENERGETIC ELECTRON FLUXES AT GEOSYNCHRONOUS ALTITUDE WERE MODERATE TO HIGH. THE ELECTRON FLUX CROSSED ALERT THRESHHOLD AT 20/1420Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE ENTIRE FORECAST PERIOD.
III. Event Probabilities 21 SEP to 23 SEP
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       20 SEP  069
  Predicted   21 SEP-23 SEP  070/070/072
  90 Day Mean        20 SEP  071
V. Geomagnetic A Indices
OBSERVED  AFR/AP 19 SEP  012/012
ESTIMATED AFR/AP 20 SEP  031/030
PREDICTED AFR/AP 21 SEP-23 SEP  015/015-015/015-015/015
VI. Geomagnetic Activity Probabilities 21 SEP to 23 SEP
A. Middle Latitudes
Active30%30%30%
Minor storm15%15%15%
Major-severe storm05%05%05%
B. High Latitudes
Active30%30%30%
Minor storm15%15%15%
Major-severe storm05%05%05%

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