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Solar Activity Report for 5/9/03

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  • David
    ** G-1 Geomagnetic Storm In Progress ** ** Aurora Watch In Effect ** The solar wind speed is holding in the mid 600 s tonight, and geomagnetic storms have been
    Message 1 of 1 , May 9, 2003
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      ** G-1 Geomagnetic Storm In Progress **
      ** Aurora Watch In Effect **

      The solar wind speed is holding in the mid 600's tonight, and
      geomagnetic storms have been observed pretty much constantly during
      the last 48 hours. While aurora perhaps haven't been what you could
      call widespread, they have been seen and photographed in Alaska and
      North Dakota, as can be seen here :
      http://science.nasa.gov/spaceweather/aurora/gallery_01may03.html .
      The high solar wind speeds are being forecasted to stay around for the
      next 72 hours and this quite large coronal hole marches across the
      solar disk. Look for more geomagnetic storm activity to occur. As
      far as sunspots go, there is but a single numbered sunspot region
      visible, and the sunspot number is correspindingly low. It doesn't
      look like there will be any significant flare activity for the
      forseeable future unless something really unexpected happens, which of
      course is always a possibility. I have a feeling tonight might be a
      good night for aurora. The Interplanetary Magnetic Field has taken on
      a south-pointing orientation, which serves to enhance geomagnetic
      activity. If you're in the northern part of the US, or in Canada or
      northern Europe, keep an eye out tonight.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 23
      SFI : 97
      A index : 28
      K index : 5

      Solar wind speed : 660.8 km/sec
      Solar wind density : 3.7 protons/cc
      Solar wind pressure : 2.6 nPa

      IMF : 6.6 nT
      IMF Orientation : 3.7 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 :
      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 low for the next three days.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be unsettled to active for the
      next two days due to persistence. An increase to mostly active is
      expected on the third day as yet another coronal hole will be rotating
      into favorable position at that time.

      Recent significant solar flare activity :
      None
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