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  singular 10:01 am on August 9, 2011 Permalink | Log in to leave a Comment
  Tags: coronal mass ejection ( 5 ), spaceweather, sunspot ( 3 ), sunspot 1263, x-class flare ( 2 )   

  sunspot 1263: X-class flare just occured 

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  An X-class (X7 according to Spaceweather.com) solar flare just occured from sunspot 1263, apparantly around 8:35 UTC.

   

  X-class flares are the most powerful category of solar flares, which can cause all sorts of problems when earth-directed. It is currently unkown whether this is the case.

  Last week has been an extremely active period, with 3 M-class CME’s (originating from sunspot 1261) merging into one large CME.

  UPDATE: according to Solarham.com the flare is not fully earth-directed.

   

  

  X-ray data for X6-class solar flare (sunspot 1263)

  update: NASA Stereo Beacon data of this event

  

  Stereo Beacon data on sunspot 1263 flare

  

   

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  singular 1:13 pm on August 7, 2011 Permalink | Log in to leave a Comment
  Tags: coronal mass ejection ( 5 ), solar flare ( 7 ), spaceweather, sunspot ( 3 ), x-class flare ( 2 )   

  Sunspot 1263 doubles in size in just 28 hour: X-class flare could occur 

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  Sunspot 1263 doubles in size

  Sunspot 1263 has doubled in size over the past 28 hours. According to SDO/HMI it has a “beta-gamma-delta” class magnetic field that harbors energy for X-class solar flares, the strongest class for solar flares.

  X-class flares have a high probability of disrupting power grids and wireless communication.

  Interestingly, sunspot 1263 will be almost in the same place as sunspot 1261 last week, which erupted 3 times causing earth-directed M-class flares.

  Source: http://www.spaceweather.com/archive.php?view=1&day=07&month=08&year=2011

   
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  singular 8:09 am on August 5, 2011 Permalink | Log in to leave a Comment
  Tags: coronal mass ejection ( 5 ), geomagnetic storm, m-class flare, solar flare ( 7 ), spaceweather, STEREO A   

  ALERT: third strong solar flare in a row, major impact expected 

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  2 solar flares merged into one huge CME

  A major geomagnetic impact is expected August 5th around 10:00 (UT), as two strong M-class flares have merged into one giant flare, according to GSFC Space Weather Lab.

  August 4th, a third strong CME was ejected from our sun,

  “The impact on Earth is likely to be major. The estimated maximum geomagnetic activity index level Kp is 7 (Kp ranges from 0 – 9). The flanks of the CME may also impact STEREO A, Mars and Mercury/MESSENGER.”

  See the animation for the projected path: Earth is the yellow dot.

  source: http://www.spaceweather.com/

  UPDATE: NOAA explains what is happening (video)