Viewing archive of Sunday, 18 December 2005

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 2005 Dec 18 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 352 Issued at 2200Z on 18 Dec 2005

IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z

Solar activity was very low. Today's activity consisted of a few B-class events, mostly from Region 834 (S06W45). Region 834 is the largest group on the disk with about 110 millionths sunspot area, but has decayed in magnetic complexity and is now a simple Beta group. No new regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be very low to low.
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled during the next three days (19 - 21 December).
III. Event Probabilities 19 Dec to 21 Dec
Class M10%10%10%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       18 Dec 086
  Predicted   19 Dec-21 Dec  085/085/085
  90 Day Mean        18 Dec 083
V. Geomagnetic A Indices
  Observed Afr/Ap 17 Dec  002/005
  Estimated     Afr/Ap 18 Dec  002/005
  Predicted    Afr/Ap 19 Dec-21 Dec  005/005-005/008-005/008
VI. Geomagnetic Activity Probabilities 19 Dec to 21 Dec
A. Middle Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active20%25%25%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

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