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Solar Activity Report for 6/18/05

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  • David
    ** Aurora Watch In Effect ** On 6/16, now departed region 775 fired off a long-duration M-4 class flare. There was a CME produced, and it should be arriving
    Message 1 of 1 , Jun 18, 2005
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      ** Aurora Watch In Effect **

      On 6/16, now departed region 775 fired off a long-duration M-4 class
      flare. There was a CME produced, and it should be arriving just about
      any time now. Skywatchers, especially those in the higher latitudes,
      should keep an eye out for aurora. Of the two sunspot regions now
      visible, region 779 looks to have at least a small chance of
      generating an M-class flare. There is also a coronal hole visible,
      although it appears to be too far north on the solar disk to hit us
      directly with a high-speed solar wind stream. Nevertheless, it might
      still be possible to get at least a glancing brush from it.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 50
      SFI : 90
      A index : 7
      K index : 1

      Solar wind speed : 452.9 km/sec
      Solar wind density : 1.2 protons/cc
      Solar wind pressure : 0.4 nPa

      IMF : 4.7 nT
      IMF Orientation : 0.3 nT North

      GOES-12 Background X-ray Flux level : B1

      Conditions for the last 24 hours :
      No space weather storms were observed for the past 24 hours.

      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 continue at low levels. Both Regions 779
      and 780 are capable of C-class activity with a small chance for an
      M-class flare.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be quiet to active with the
      chance for isolated minor storm periods. Transient flow from the M4
      flare and CME on 16 June may create occasional storm periods on 19
      June. Predominantly quiet to unsettled levels are expected on 20 and
      21 June.

      Recent significant solar flare activity :
      16-Jun-2005 2022Z M4.0
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