Solar activity report

Viewing archive of Friday, 18 June 2010

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 18 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 169 Issued at 2200Z on 18 Jun 2010

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

Solar activity has been very low.

IB. Solar Activity Forecast

Solar activity is expected to be very low.

IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z

The geomagnetic field has been quiet. Solar wind data from the ACE spacecraft indicates the continuation of a high speed solar wind stream, with wind speeds generally decreasing and reaching about around 500 km/s at the end of the period.

IIB. Geophysical Activity Forecast

The geomagnetic field is expected to be quiet.

III. Event Probabilities 19 Jun to 21 Jun

Class M	01%	01%	01%
Class X	01%	01%	01%
Proton	01%	01%	01%
PCAF	Green

IV. Penticton 10.7 cm Flux

  Observed       18 Jun 070
  Predicted   19 Jun-21 Jun  071/071/071
  90 Day Mean        18 Jun 076

V. Geomagnetic A Indices

  Observed Afr/Ap 17 Jun  008/010
  Estimated     Afr/Ap 18 Jun  005/005
  Predicted    Afr/Ap 19 Jun-21 Jun  005/005-005/005-005/005

VI. Geomagnetic Activity Probabilities 19 Jun to 21 Jun

A. Middle Latitudes
Active	05%	05%	05%
Minor storm	01%	01%	01%
Major-severe storm	01%	01%	01%

B. High Latitudes
Active	05%	05%	05%
Minor storm	01%	01%	01%
Major-severe storm	01%	01%	01%

All times in UTC

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The strength of the interplanetary magnetic field is moderate (15.53nT), the direction is North (8.94nT).

The Disturbance Storm Time index predicts moderate storm conditions right now (-90nT)

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