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Solar Activity Report for 5/17/04

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  • David
    There are six numbered sunspot regions visible tonight, which is the most that there has been in pretty long while. One of them, region 609, looks like it
    Message 1 of 1 , May 17, 2004
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      There are six numbered sunspot regions visible tonight, which is the
      most that there has been in pretty long while. One of them, region
      609, looks like it might have the potential for generating an M-class
      flare. You might remember that region 609 had been growing quite
      rapidly late last week. Over the weekend, it actually split into two
      distinct parts, and the growth seems to have stopped. It'll bve
      interesting to see what happens to the other regions visible in the
      days ahead. There is a coronal hole that is moving into an
      Earth-pointing position. We could see some solar wind gusts from it
      along about the 20th. Please see the note regarding the ACE satellite
      below.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 147
      SFI : 111
      A index : 6
      K index : 1

      Solar wind speed : 298.2 km/sec
      Solar wind density : 4.1 protons/cc
      Solar wind pressure : 0.8 nPa

      IMF : 4.8 nT
      IMF Orientation : 0.8 nT North

      Conditions for the last 24 hours :
      No space weather storms were observed for the past 24 hours.

      Forecast for the next 24 hours :
      No space weather storms are expected for the next 24 hours.

      Solar activity forecast :
      Solar activity is expected to be low. C-class flares are possible in
      Regions 609 and 614.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be quiet to unsettled. NOTE: The
      ACE spacecraft orbit will bring ACE nearly in line with the Sun from
      about 30 May to 02 June, 2004. During that time solar radio noise is
      expected to interfere with spacecraft telemetry resulting in the loss
      of solar wind plasma, magnetic field, and particle data.

      Recent significant solar flare activity :
      None
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