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Solar Activity Report for 3/11/04

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  • David
    ** Aurora Watch In Effect ** The Earth has entered a high speed solar wind stream coming from a coronal hole, and G-1 geomagnetic storm conditions have been
    Message 1 of 1 , Mar 11, 2004
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      ** Aurora Watch In Effect **

      The Earth has entered a high speed solar wind stream coming from a
      coronal hole, and G-1 geomagnetic storm conditions have been observed
      within the last 24 hours. The solar wind speed is close to the 650
      km/sec mark, and an aurora watch is in effect. In fact, aurora have
      already been spotted in Canada, Alaska, northern Europa, and as far
      south as Wisconsin. See this link for some great aurora pictures :
      http://science.nasa.gov/spaceweather/aurora/gallery_01mar04.htm .
      More aurora are a definite possibility. The active conditions are
      expected to last until the 14th, after which things will calm down.
      Sunspot region 570, while quite large, has been quiet for several
      days. Still, however, it has the potential to produce a significant
      flare.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 67
      SFI : 113
      A index : 27
      K index : 4

      Solar wind speed : 647.9 km/sec
      Solar wind density : 1.3 protons/cc
      Solar wind pressure : 1.1 nPa

      IMF : 4.5 nT
      IMF Orientation : 3.4 nT South

      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. Region 570 may produce C- and
      isolated M-class flares.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at unsettled to active
      conditions, with isolated minor storming possible, on 12-13 March.
      Activity should decrease on 14 March as the coronal hole moves out of
      geoeffective position.

      Recent significant solar flare activity :
      None
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