Viewing archive of Monday, 22 March 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 Mar 22 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 081 Issued at 2200Z on 22 MAR 1999

IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z

SOLAR ACTIVITY WAS LOW DUE TO AN OPTICALLY UNCORRELATED C1 X-RAY FLARE AT 22/0152UT. NO OPTICAL FLARES WERE REPORTED. ALL DISK REGIONS ARE SMALL AND SIMPLE. NEW REGION 8497 (N30E60) ROTATED AROUND THE EAST LIMB.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW.
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 23 MAR to 25 MAR
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       22 MAR 116
  Predicted   23 MAR-25 MAR  110/110/110
  90 Day Mean        22 MAR 142
V. Geomagnetic A Indices
OBSERVED AFR/AP 21 MAR  006/006
ESTIMATED AFR/AP 22 MAR  004/005
PREDICTED AFR/AP 23 MAR-25 MAR  005/008-005/012-010/010
VI. Geomagnetic Activity Probabilities 23 MAR to 25 MAR
A. Middle Latitudes
Active15%15%20%
Minor storm01%01%10%
Major-severe storm01%01%05%
B. High Latitudes
Active15%15%20%
Minor storm01%01%10%
Major-severe storm01%01%05%

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