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Solar Activity Report for 3/9/02

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  • b1blancer_29501
    The Earth is exiting the high speed, coronal hole generated solar wind stream that is has been inside for the past few days. The coronal hole that caused it is
    Message 1 of 2 , Mar 9, 2002
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      The Earth is exiting the high speed, coronal hole generated solar wind
      stream that is has been inside for the past few days. The coronal hole
      that caused it is quite unusual. It has persisted for 3 27-day
      rotation cycles around the sun. If it holds together, it will be back
      in early April. Solar activity is picking up as a new, large sunspot
      region is rotating into view. That region, 9866, is starting off with
      a bang, having generated 2 M-class flares in the past 24 hours. As it
      comes more into view, we'll get a better idea of exactly how big it is
      and what it's magnetic field looks like.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 107
      SFI : 184
      A index : 7
      K index : 1

      Solar wind speed : 429.9 km/sec
      Solar wind density : 4.3 protons/cc
      Solar wind pressure : 1.4 nPa

      IMF : 6.7 nT
      IMF Orientation : 6.4 nT North

      Conditions for the last 24 hours :
      Solar activity was moderate. The geomagnetic field was quiet to
      unsettled.

      Forecast for the next 24 hours :
      Solar activity will be low to moderate. The geomagnetic field will be
      quiet to unsettled.

      Solar activity forecast :
      Solar activity is expected to be low to moderate. Region 9866 is a
      likely source of additional, isolated M-class activity.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be mainly quiet to unsettled. A
      slight chance for isolated active periods may exist for day three of
      the forecast period, due to possible shock passage effects from
      today's M2 long -duration flare event.

      Recent significant solar flare activity :
      09-Mar-2002 2210Z M1.3
      09-Mar-2002 1856Z M2.6
    • pawnfart
      http://www.copernicus.org/EGS/acp/acpd/1/221/acpd-1-221_p.pdf
      Message 2 of 2 , Mar 11, 2002
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