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Solar Activity Report for 11/10/03

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  • David
    ** Aurora Watch In Effect ** Exit sunspots, enter coronal hole! The solar wind speed is close to the 700 km/sec mark this evening due to a large coronal hole
    Message 1 of 1 , Nov 10, 2003
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      ** Aurora Watch In Effect **

      Exit sunspots, enter coronal hole! The solar wind speed is close to
      the 700 km/sec mark this evening due to a large coronal hole that has
      moved into an Earth-pointing position. G-1 geomagnetic storm
      conditions have been observed within the last 24 hours, and an aurora
      watch is in effect. The Interplanetary Magnetic Field (IMF) has been
      holding a south-pointing orientation for most of the day, which has
      the effect of weakening Earth's magnetic field and enhancing
      geomagnetic activity. Keep an eye out tonight, especially around
      local midnight. There are three small sunspot regions visible
      tonight, but none of them appear to have the potential for producing a
      significant flare. Everybody is still waiting to see what sort of
      shape sunspot regions 484 and 486 will be in when they make it back
      around. SOHO satellite images have shown evidence of activity on the
      far side of the sun. Time will tell.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 47
      SFI : 95
      A index : 27
      K index : 4

      Solar wind speed : 692.6 km/sec
      Solar wind density : 4.3 protons/cc
      Solar wind pressure : 4.0 nPa

      IMF : 11.9 nT
      IMF Orientation : 2.8 nT North

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

      Solar activity forecast :
      Solar activity is expected to be low. Additional small C-class flares
      are possible.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be mostly active with isolated
      minor storm periods. A coronal hole high speed stream is expected to
      influence activity levels for the next few days.

      Recent significant solar flare activity :
      None
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