Saturday, November 10, 2012

Lake Effect Transition

The lake-effect event continues to rage.  This morning, the event has slowly transitioned into a more banded structure, as is now apparent in the radar image below.


We don't really understand these structural transitions, but I think in this case it might be related to a gradual veering of the large scale flow at ~700 mb (roughtly crest level) from westerly to northwesterly.     This means the large-scale flow is transitioning from primarily across the surface convergence zone (see previous posts) to along it.

I really should be skiing.
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4 comments:

  1. AnonymousNovember 10, 2012 at 5:07 PM

    Dr Jim, Do not let the doppler take away from the turns....upper BCC was very nice today.:)

    ReplyDelete
  2. Peter J.November 10, 2012 at 9:09 PM

    When the lake effect took its afternoon break, I thought it had finished. It was interesting to see it reform this evening, and my kids are loving the additional snow. :)

    ReplyDelete
  3. Jim SNovember 10, 2012 at 9:31 PM

    Yup, its a great event. The dendrites are stacked deep & getting deeper.

    ReplyDelete
  4. Jim SNovember 10, 2012 at 9:31 PM

    Yup, its a great event. The dendrites are stacked deep & getting deeper.

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