Viewing archive of Friday, 19 September 1997

Solar activity report

Report of Solar-Geophysical Activity 1997 Sep 19 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 262 Issued at 2200Z on 19 SEP 1997

IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z

SOLAR ACTIVITY WAS LOW. SEVERAL C-CLASS FLARES OCCURRED SINCE YESTERDAY. THE LARGEST WAS A C8/1F AT 19/0150Z WHICH WAS OPTICALLY CORRELATED WITH REGION 8085 (S25W90).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. OCCASIONAL C-CLASS EVENTS ARE POSSIBLE FROM REGION 8086 (N27W25). IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 18/2100Z TO 19/2100Z: THE GEOMAGNETIC FIELD HAS BEEN QUIET THROUGH THE PERIOD AT ALL LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET THROUGH THE FORECAST PERIOD.
III. Event Probabilities 20 SEP to 22 SEP
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       19 SEP 088
  Predicted   20 SEP-22 SEP  086/084/084
  90 Day Mean        19 SEP 080
V. Geomagnetic A Indices
OBSERVED AFR/AP 18 SEP  014/017
ESTIMATED AFR/AP 19 SEP  005/005
PREDICTED AFR/AP 20 SEP-22 SEP  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 20 SEP to 22 SEP
A. Middle Latitudes
Active10%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active10%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%

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