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Solar Activity report for 7/7/05

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  • David
    ** Aurora Watch In Effect ** Sunspot region 786 had been looking for several days like it might have the potential for a producing a significant flare.
    Message 1 of 1 , Jul 7, 2005
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      ** Aurora Watch In Effect **

      Sunspot region 786 had been looking for several days like it might
      have the potential for a producing a significant flare. Earlier
      today, it lived up to its potential in the form of an M-4 class flare.
      That's the first significant flare we've seen in awhile. There was a
      full-halo CME associated with the event, although it was somewhat
      faint. Nevertheless, it's on its way here, and be looking for it to
      arrive on the 9th or 10th. There are four numbered sunspot regions
      visible, and region 786 is squarely in an Earth-pointing position. It
      also has the potential for producing more significant flares.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 149
      SFI : 123
      A index : 4
      K index : 2

      Solar wind speed : 324.7 km/sec
      Solar wind density : 3.8 protons/cc
      Solar wind pressure : 0.6 nPa

      IMF : 3.8 nT
      IMF Orientation : 2.8 nT North

      GOES-12 Background X-ray Flux level : B3

      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 be low to moderate. Region 786 is
      capable of producing an isolated M-class event.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be at unsettled to active levels
      with isolated periods of minor storm conditions. Activity is expected
      due to possible effects from the CME observed on 05 July, a recurrent
      coronal hole high speed stream, today's M4 halo CME, and the CME
      associated with the disappearing filament centered at N07E00.

      Recent significant solar flare activity :
      07-Jul-2005 1629Z M4.9
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