Viewing archive of Tuesday, 1 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 01 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 152 Issued at 2200Z on 01 JUN 1999

IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z

SOLAR ACTIVITY WAS LOW. SEVERAL C-CLASS FLARES OCCURRED FROM A VARIETY OF ACTIVE REGIONS. THE LARGEST WAS A C6/SF AT 01/1106UT IN REGION 8562 (S16E09). THIS FLARE WAS ASSOCIATED WITH MINOR RADIO OUTPUT THAT INCLUDED 23 SFU AT 2695 MHZ. NEW REGION 8564 (S15E68) WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW TO MODERATE.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 02 JUN to 04 JUN
Class M30%30%30%
Class X05%05%05%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       01 JUN 176
  Predicted   02 JUN-04 JUN  178/180/180
  90 Day Mean        01 JUN 131
V. Geomagnetic A Indices
OBSERVED AFR/AP 31 MAY  002/004
ESTIMATED AFR/AP 01 JUN  003/010
PREDICTED AFR/AP 02 JUN-04 JUN  005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 02 JUN to 04 JUN
A. Middle Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%

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