Viewing archive of Saturday, 30 August 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 Aug 30 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 242 Issued at 2200Z on 30 AUG 1997

IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z

SOLAR ACTIVITY WAS MODERATE. REGION 8076 (N28W01) PRODUCED AN M1/0F TENFLARE AT 29/ 2332Z. SMALL DISCRETE RADIO BURSTS WERE REPORTED, AMONG THEM 200 SFU AT 245 MHZ, AND 130 SFU AT 2695 MHZ. NO RADIO SWEEP EVENTS OCCURRED. THE REGION ALSO HAD A C1/0F AT 1125Z, BUT HAS BEEN RELATIVELY QUIET WHILE SHOWING DECAY IN WHITE LIGHT SINCE THEN. ONE NEW REGION WAS BORN ON THE DISK, 8080 (N18W31).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW. ADDITIONAL C-CLASS FLARES SHOULD COME FROM REGION 8076, BUT MORE M-CLASS EVENTS ARE UNLIKELY.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET TO UNSETTLED. WEAK SUBSTORMS WERE SEEN AT SOME SITES, ACCOMPANIED BY SHORT-LIVED ACTIVE CONDITIONS. THE GREATER THAN 2 MEV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT ATTAINED HIGH LEVELS DURING THE LATTER PART OF THE PERIOD.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED. SUBSTORM ACTIVITY SHOULD DIMINISH IN THE NEXT 24 HOURS.
III. Event Probabilities 31 AUG to 02 SEP
Class M10%10%10%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       30 AUG 092
  Predicted   31 AUG-02 SEP  092/092/090
  90 Day Mean        30 AUG 074
V. Geomagnetic A Indices
OBSERVED AFR/AP 29 AUG  015/015
ESTIMATED AFR/AP 30 AUG  010/015
PREDICTED AFR/AP 31 AUG-02 SEP  010/010-005/008-005/006
VI. Geomagnetic Activity Probabilities 31 AUG to 02 SEP
A. Middle Latitudes
Active20%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active30%15%15%
Minor storm10%05%05%
Major-severe storm01%01%01%

All times in UTC

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