Viewing archive of Monday, 25 August 1997

Solar activity report

Report of Solar-Geophysical Activity 1997 Aug 25 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 237 Issued at 2200Z on 25 AUG 1997

IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z

SOLAR ACTIVITY WAS LOW. NEW REGION 8076 (N29E63), A GROWING CRO SPOT GROUP, PRODUCED TWO SMALL C-CLASS FLARES. THIS IS THE RETURN OF REGION 8069. NEW REGION 8077 (S23E59), A SMALL BXO GROUP, WAS ALSO NUMBERED TODAY. THE REMAINDER OF THE VISBLE DISK WAS QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN LOW. REGION 8076 HAS A GOOD CHANCE OF PRODUCING MORE C-CLASS FLARES AND HAS AN OUTSIDE CHANCE OF AN ISOLATED M-CLASS FLARE AS WELL. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 24/2100Z TO 25/2100Z: THE GEOMAGNETIC FIELD WAS MOSTLY QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE ENTIRE FORECAST PERIOD.
III. Event Probabilities 26 AUG to 28 AUG
Class M 05%05%05%
Class X 01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       25 AUG 082
  Predicted    26 AUG-28 AUG  084/086/086
  90 Day Mean        25 AUG 073
V. Geomagnetic A Indices
OBSERVED AFR/AP 24 AUG  008/006
ESTIMATED AFR/AP 25 AUG  005/005
PREDICTED AFR/AP 26 AUG-28 AUG  005/008-010/012-010/008
VI. Geomagnetic Activity Probabilities 26 AUG to 28 AUG
A. Middle Latitudes
Active10%15%15%
Minor storm 05%05%05%
Major-severe storm 01%01%01%
B. High Latitudes
Active10%15%15%
Minor storm 05%05%05%
Major-severe storm 01%01%01%

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