Viewing archive of Saturday, 31 May 2008

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 2008 May 31 2203 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 31 May 2008

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

Solar activity was very low. The visible solar disk remains spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
The geomagnetic field was quiet to unsettled. Solar wind velocities have remained elevated with speeds between 550 - 600 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels, with a chance for isolated active periods, for day one (01 June). Quiet to unsettled conditions are expected for day two (02 June), with predominately quiet levels expected for day three (03 June).
III. Event Probabilities 01 Jun to 03 Jun
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       31 May 067
  Predicted   01 Jun-03 Jun  068/068/068
  90 Day Mean        31 May 071
V. Geomagnetic A Indices
  Observed Afr/Ap 30 May  007/011
  Estimated     Afr/Ap 31 May  008/010
  Predicted    Afr/Ap 01 Jun-03 Jun  008/010-005/008-005/005
VI. Geomagnetic Activity Probabilities 01 Jun to 03 Jun
A. Middle Latitudes
Active15%10%10%
Minor storm05%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active30%25%10%
Minor storm10%05%05%
Major-severe storm05%05%01%

All times in UTC

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