Viewing archive of Saturday, 26 June 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 Jun 26 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 177 Issued at 2200Z on 26 Jun 2010

IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z

Solar activity has been very low.
IB. Solar Activity Forecast
Solar activity is expected to be very low. An isolated C-class event is still possible on day one (27 June) as Region 1082 (N27W88) approaches the west limb.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field has been quiet to unsettled with an isolated active period at 26/0300-0600Z. Solar wind speed data from ACE indicated the onset of a coronal hole high speed stream at 26/0215Z with solar wind speeds increasing to around 450 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be predominately unsettled with isolated active periods for days one thru three (27-29 June). Activity is forecast due to a recurrent coronal hole high speed stream.
III. Event Probabilities 27 Jun to 29 Jun
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       26 Jun 075
  Predicted   27 Jun-29 Jun  077/077/078
  90 Day Mean        26 Jun 075
V. Geomagnetic A Indices
  Observed Afr/Ap 25 Jun  008/008
  Estimated     Afr/Ap 26 Jun  014/015
  Predicted    Afr/Ap 27 Jun-29 Jun  012/013-010/012-010/010
VI. Geomagnetic Activity Probabilities 27 Jun to 29 Jun
A. Middle Latitudes
Active20%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active25%15%15%
Minor storm10%10%10%
Major-severe storm01%01%01%

All times in UTC

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