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Solar Activity Report for 7/12/02

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  • b1blancer_29501
    The high speed solar wind continues tonight, and actually triggered a G-1 class geomagnetic storm which went on for awhile yesterday, although that has died
    Message 1 of 1 , Jul 12, 2002
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      The high speed solar wind continues tonight, and actually triggered a
      G-1 class geomagnetic storm which went on for awhile yesterday,
      although that has died down. The coronal hole effects are expected to
      continue for another day before beginning to slack off. Sunspot
      region 30 is growing and has developed a complex magnetic field. An
      X-class flare from this region is not out of the question. It has
      already been quite active, producing three M-class flares within the
      last 36 hours, the strongest being a very respectable M-5 class flare.
      There is a fairly large coronal hole which has recently rotated into
      view. It is in the sun's southern hemisphere, and may be located too
      far south to affect us here, although that is not certain. If we do
      see some high speed solar wind from it, it should be around the 16th.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 93
      SFI : 133
      A index : 15
      K index : 2

      Solar wind speed : 464.3 km/sec
      Solar wind density : 5.1 protons/cc
      Solar wind pressure : 1.4 nPa

      IMF : 6.6 nT
      IMF Orientation : 1.7 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. Radio blackouts reaching the R1 level
      occurred.

      Forecast for the next 24 hours :
      Space weather for the next 24 hours is expected to be minor. Radio
      blackouts reaching the R1 level are expected.

      Solar activity forecast :
      Solar activity is expected to be at moderate levels. Region 30
      continues to exhibit the potential for the production of an isolated
      major flare.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at predominantly quiet to
      unsettled levels. Isolated active conditions are possible on day one
      as the effects from the geoeffective coronal hole wane.

      Recent significant solar flare activity :
      13-Jul-2002 0005Z M1.0
      11-Jul-2002 1451Z M5.8
      11-Jul-2002 1419Z M1.0
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