Viewing archive of Monday, 10 May 2010

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 2010 May 10 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 130 Issued at 2200Z on 10 May 2010

IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z

Solar activity was very low. The visible disk remained spotless. Only low-level B-class activity was noted, all from Region 1069 as it rotated off the disk at N41.
IB. Solar Activity Forecast
Solar activity is expected to remain at very low levels.
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at predominately quiet to unsettled levels, with isolated active periods, all three days of the forecast period (11 - 13 May). The anticipated increase in activity levels is due to a series of coronal hole high speed wind streams, located in both solar hemispheres, that will become geoeffective through the period.
III. Event Probabilities 11 May to 13 May
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       10 May 074
  Predicted   11 May-13 May  075/075/075
  90 Day Mean        10 May 081
V. Geomagnetic A Indices
  Observed Afr/Ap 09 May  001/004
  Estimated     Afr/Ap 10 May  003/005
  Predicted    Afr/Ap 11 May-13 May  008/008-010/010-008/008
VI. Geomagnetic Activity Probabilities 11 May to 13 May
A. Middle Latitudes
Active25%30%25%
Minor storm05%10%05%
Major-severe storm01%01%01%
B. High Latitudes
Active30%35%30%
Minor storm10%15%10%
Major-severe storm01%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

Whitehorse, YT
Fairbanks, AK

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

Edmonton, AB, Gillam, MB, Saskatoon, SK, Yellowknife, NT
Anchorage, AK, Juneau, AK
The solar wind speed is currently moderately high (677.1 km/sec.)

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