Viewing archive of Wednesday, 9 June 1999

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 1999 Jun 09 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 160 Issued at 2200Z on 09 JUN 1999

IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z

SOLAR ACTIVITY WAS LOW. ONLY OCCASIONAL SMALL C-CLASS EVENTS OCCURRED DURING THE DAY. REGION 8574 (N29W12) CONTINUES TO BE THE MOST ACTIVE REGION, PRODUCING TWO SMALL C-CLASS EVENTS AND SEVERAL OPTICAL SUB FLARES. TWO NEW REGIONS WERE ASSIGNED: 8579 (N12E10) AND 8580 (S19E67).
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
THE GEOMAGNETIC FIELD WAS MOSTLY QUIET TO UNSETTLED WITH A SINGLE ACTIVE PERIOD OCCURRING 09/1500-1800UT.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET TO UNSETTLED DURING THE NEXT 24 HOURS, WITH A CHANCE OF ISOLATED ACTIVE CONDITIONS. QUIET TO UNSETTLED CONDITIONS ARE EXPECTED JUNE 11-12.
III. Event Probabilities 10 JUN to 12 JUN
Class M30%30%30%
Class X05%05%05%
Proton05%05%05%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       09 JUN 165
  Predicted   10 JUN-12 JUN  165/165/160
  90 Day Mean        09 JUN 135
V. Geomagnetic A Indices
OBSERVED AFR/AP 08 JUN  012/015
ESTIMATED AFR/AP 09 JUN  010/010
PREDICTED AFR/AP 10 JUN-12 JUN  010/010-005/010-005/010
VI. Geomagnetic Activity Probabilities 10 JUN to 12 JUN
A. Middle Latitudes
Active20%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active25%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

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