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Solar Activity Report for 6/04/05

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  • David
    ** Aurora Watch In Effect ** The Earth is in the middle of a high speed coronal hole solar wind stream. Solar wind speeds have been fairly close to the 600
    Message 1 of 1 , Jun 4, 2005
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      ** Aurora Watch In Effect **

      The Earth is in the middle of a high speed coronal hole solar wind
      stream. Solar wind speeds have been fairly close to the 600 km/sec
      mark. G-1 geomagnetic storm conditions have been observed within the
      last 24 hours. and aurora have been spotted and photographed in
      Canada, northern Europe, and the northern US, as can be seen here :
      http://www.spaceweather.com/aurora/gallery_01may05_page9.htm . In
      addition to that, sunspot region 772, one of three regions visible,
      has been active, firing off three M-class flares within the last three
      days. The most recent flare, an M1.0 event, was of the long-duration
      variety, and launched a full-halo CME in our direction. Look for it
      to be arriving here at Earth during the next 48 hours. It should
      serve to help maintain the elevated activity level.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 74
      SFI : 97
      A index : 18
      K index : 4

      Solar wind speed : 574.4 km/sec
      Solar wind density : 4.3 protons/cc
      Solar wind pressure : 2.3 nPa

      IMF : 9.9 nT
      IMF Orientation : 2.8 nT North

      GOES-12 Background X-ray Flux level : B1

      Conditions for the last 24 hours :
      Space weather for the past 24 hours has been minor. Geomagnetic storms
      reaching the G1 level occurred.

      Forecast for the next 24 hours :
      Space weather for the next 24 hours is expected to be minor. Radio
      blackouts reaching the R1 level are expected.

      Solar activity forecast :
      Solar activity is expected to be low with a chance for an isolated
      M-class event from Region 772.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at unsettled to active levels
      with isolated periods of minor storm conditions possible. The
      increased levels of activity are expected due to the combined effects
      of a coronal hole high speed stream, the influence of the M1 CME on 03
      June, and the activity from today's event at 23/2355 UTC.

      Recent significant solar flare activity :
      03-Jun-2005 1226Z M1.0
      03-Jun-2005 0411Z M1.3
      01-Jun-2005 0243Z M1.7
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