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Solar Activity Report for 7/12/05

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  • David
    Sunspot region 786 is approaching the western limb of the solar disk, but it darn sure isn t going quietly. There have been three M-class flares within the
    Message 1 of 1 , Jul 12, 2005
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      Sunspot region 786 is approaching the western limb of the solar disk,
      but it darn sure isn't going quietly. There have been three M-class
      flares within the last 24 hours, the background X-ray flux has risen
      rather sharply, and at least one CME is on the way towards Earth.
      Look for it to be arriving along about the 15th. G-1 and G-2
      geomagnetic storm conditions have been observed within the last 24
      hours in response to another CME that was produced by an M-class flare
      that happened on thr 9th. Judging from the GOES-12 X-ray plots, it
      looks like region 786 is going to continue to be active until it
      rotates out of view.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 52
      SFI : 96
      A index : 32
      K index : 2

      Solar wind speed : 503.8 km/sec
      Solar wind density : 1.4 protons/cc
      Solar wind pressure : 0.6 nPa

      IMF : 9.9 nT
      IMF Orientation : 9.4 nT North

      GOES-12 Background X-ray Flux level : B7

      Conditions for the last 24 hours :
      Space weather for the past 24 hours has been moderate. Geomagnetic
      storms reaching the G2 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.
      Geomagnetic storms reaching the G1 level are expected. Radio blackouts
      reaching the R1 level are expected.

      Solar activity forecast :
      Solar activity is expected to be low to moderate. Isolated M-class
      activity is possible from Region 786.

      Geomagnatic activity forecast :
      The geomagnetic field is expected to range from quiet to minor storm
      levels. Isolated active periods are possible on 13 and 14 July. Minor
      storm conditions are possible on 15 July associated with today's CME
      activity.

      Recent significant solar flare activity :
      12-Jul-2005 2252Z M1.3
      12-Jul-2005 1624Z M1.5
      12-Jul-2005 1306Z M1.0
      09-Jul-2005 2206Z M2.8
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