Viewing archive of Thursday, 31 May 2001

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 2001 May 31 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 151 Issued at 2200Z on 31 May 2001

IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z

Solar activity has been low. An optically uncorrelated long duration C1 event occurred at 31/1632 UTC.
IB. Solar Activity Forecast
Solar activity is expected to be low.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled.
III. Event Probabilities 01 Jun to 03 Jun
Class M20%20%20%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       31 May 133
  Predicted   01 Jun-03 Jun  130/130/125
  90 Day Mean        31 May 169
V. Geomagnetic A Indices
  Observed Afr/Ap 30 May  002/005
  Estimated     Afr/Ap 31 May  005/008
  Predicted    Afr/Ap 01 Jun-03 Jun  008/010-008/010-008/010
VI. Geomagnetic Activity Probabilities 01 Jun to 03 Jun
A. Middle Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active20%20%20%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

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Active geomagnetic conditions

Observed Kp: 4
Threshold reached: 06:01 UTC

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Yellowknife, NT
The solar wind speed is currently moderately high (551.78 km/sec.)

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