Viewing archive of Friday, 24 September 1999

Solar activity report

Report of Solar-Geophysical Activity 1999 Sep 24 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 267 Issued at 2200Z on 24 SEP 1999

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

SOLAR ACTIVITY WAS VERY LOW. ONE NEW REGION, 8709 (S15E48) WAS ASSIGNED. THE DISK AND LIMBS WERE QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 23/2100Z TO 24/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED THROUGHOUT THE PERIOD.
III. Event Probabilities 25 SEP to 27 SEP
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       24 SEP 132
  Predicted   25 SEP-27 SEP  130/125/120
  90 Day Mean        24 SEP 162
V. Geomagnetic A Indices
OBSERVED AFR/AP 23 SEP  020/024
ESTIMATED AFR/AP 24 SEP  005/010
PREDICTED AFR/AP 25 SEP-27 SEP  010/010-010/010-010/010
VI. Geomagnetic Activity Probabilities 25 SEP to 27 SEP
A. Middle Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active20%20%20%
Minor storm10%10%10%
Major-severe storm01%01%01%

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