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Solar Activity Report or 4/11/05

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  • David
    ** G-1 Geomagnetic Storm In Progress ** ** Aurora Watch In Effect ** The Earth has moved inside of a high-speed solar wind stream coming from a coronal hole.
    Message 1 of 1 , Apr 11 10:07 PM
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      ** G-1 Geomagnetic Storm In Progress **
      ** Aurora Watch In Effect **

      The Earth has moved inside of a high-speed solar wind stream coming
      from a coronal hole. G-2 geomagnetic storm condition have been
      observed within the last 24 hours, and G-1 geomagnetic storm is in
      progress. No aurora sightings have been reported yet, but my guess is
      there will be. G-1 geomagnetic storm conditions are expected to
      persist over the next 24 - 48 hours, with the activity level dropping
      off on the 14th. Only one sunspot region is visible on the solar disk
      tonight, and it doesn't look to have the potential to generate any
      significant flares.

      The current solar and geomagnetic conditions are :

      NOAA suspot number : 17
      SFI : 88
      A index : 8
      K index : 5

      Solar wind speed : 511.1 km/sec
      Solar wind density : 9.4 protons/cc
      Solar wind pressure : 3.4 nPa

      IMF : 8.3 nT
      IMF Orientation : 0.6 nT North

      GOES-12 Background X-ray Flux level : A9

      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.
      Geomagnetic storms reaching the G1 level are expected.

      Solar activity forecast :
      Solar activity is expected to be very low to low for the next three
      days (12-14 April).

      Geomagnetic acctivity forecast :
      The geomagnetic field is expected to be mostly active for the next two
      days (12-13 April) as the high speed stream from the coronal hole
      should continue to drive activity. There is a chance for isolated
      minor storm periods during this time as well. Conditions are expected
      to subside to unsettled with occasional active periods for the third
      day (14 April).

      Recent significant solar flare activity :
      None
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