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Solar Activity Report for 9/17/05

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  • David
    Well, we had aurora in Arizona, severe geomagnetic storms, and more big flares than you can shake a satellite at, but it appears that sunspot region 808 is
    Message 1 of 1 , Sep 17, 2005
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      Well, we had aurora in Arizona, severe geomagnetic storms, and more
      big flares than you can shake a satellite at, but it appears that
      sunspot region 808 is losing some of its punch as it approaches the
      western limb. That's not to say, however, that it's going quietly,
      and it fired off a flare today that was just barely shy of X-class at
      M9.8. Given that it is decaying, albeit slowly, it shouldn't be as
      energetic as it is now if it survives for another trip around. Once
      region 808 clears, look for the overall activity level to drop
      dramatically. It is the only sunspot region visible, and at least for
      now, there isn't another one coming into view.

      The current solar and goemagnetic conditions are :

      NOAA sunspot number : 59
      SFI : 104
      A index : 11
      K index : 2

      Solar wind speed : 578.2 km/sec
      Solar wind density : 1.1 protons/cc
      Solar wind pressure : 0.5 nPa

      IMF : 4.4 nT
      IMF Orientation : 2.6 nT South

      GOES-12 Background X-ray Flux Level : B3

      Conditions for the last 24 hours :
      Space weather for the past 24 hours has been moderate. Radio blackouts
      reaching the R2 level occurred.

      Forecast for the next 24 hours :
      Space weather for the next 24 hours is expected to be moderate. Radio
      blackouts reaching the R2 level are expected.

      Solar activity forecast :
      Solar activity is expected to be moderate to high. Region 808, though
      decaying, is still capable of energetic activity.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be unsettled for the next three days.

      Recent significant solar flare activity :
      7-Sep-2005 0605Z M9.8
      16-Sep-2005 1936Z M3.5
      16-Sep-2005 1748Z M1.3
      16-Sep-2005 0149Z M4.4
      15-Sep-2005 1910Z M1.0
      15-Sep-2005 0838Z X1.1
      15-Sep-2005 0212Z M1.3
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