Viewing archive of Tuesday, 15 January 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 Jan 15 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 015 Issued at 2200Z on 15 Jan 2008

IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z

Solar activity was very low. The visible disk remained spotless.
IB. Solar Activity Forecast
Solar activity is expected to remain very low.
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic field was quiet to unsettled under the influence of a recurrent coronal hole high speed stream. Solar wind speed at ACE declined from a peak of approximately 760 km/s to 650 km/s during the period. The greater than 2 MeV electrons reached high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to remain unsettled on days 1 and 2 (16-17 Jan) under the waning influence of the coronal hole. Infrequent, brief periods of active to minor storm conditions will still be possible at high latitudes. Day 3 (18 Jan) should bring a return to quiet conditions.
III. Event Probabilities 16 Jan to 18 Jan
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       15 Jan 074
  Predicted   16 Jan-18 Jan  075/070/070
  90 Day Mean        15 Jan 074
V. Geomagnetic A Indices
  Observed Afr/Ap 14 Jan  014/016
  Estimated     Afr/Ap 15 Jan  014/012
  Predicted    Afr/Ap 16 Jan-18 Jan  010/010-008/008-005/005
VI. Geomagnetic Activity Probabilities 16 Jan to 18 Jan
A. Middle Latitudes
Active25%20%20%
Minor storm15%10%10%
Major-severe storm05%01%01%
B. High Latitudes
Active25%15%10%
Minor storm20%05%05%
Major-severe storm05%01%01%

All times in UTC

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

Gillam, MB, Yellowknife, NT

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

Edmonton, AB, Iqaluit, NU, Saskatoon, SK, Whitehorse, YT
Nuuk
Juneau, AK

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

Winnipeg, MB
The direction of the interplanetary magnetic field is slightly South (-5.91nT).

S1 - Minor solar radiation storm

Minor impacts on HF radio through polar regions

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