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Mesoscale Discussion 64
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   Mesoscale Discussion 0064
   NWS Storm Prediction Center Norman OK
   1010 AM CST Tue Jan 17 2017

   Areas affected...From central New York into parts of the North

   Concerning...Freezing rain 

   Valid 171610Z - 172215Z

   SUMMARY...Areas of mainly light freezing rain are expected to
   develop across central and northern New York today.

   DISCUSSION...Latest surface analysis at 16Z shows sub-freezing
   temperatures from central into northern NY, with several areas
   colder than forecast by RAP or NAM point forecast soundings. This is
   resulting in ongoing freezing rain along a Syracuse Johnson City
   line currently.

   Aloft, an area of warm advection will persist ahead of a weak
   shortwave trough, with the 850 mb freezing line well to the
   northeast of the discussion area. Therefore, precipitation should
   remain liquid with either rain or freezing rain, depending on the
   surface temperature. Despite some diurnal warming, a saturating
   column should result in cooling, with a few pockets of sub-freezing
   temperatures remaining especially in higher elevations.

   ..Jewell.. 01/17/2017


   LAT...LON   42867618 43357653 43677655 44037685 44287660 44437588
               44227467 43957406 43797380 43357393 42817368 42577401
               42907488 42957519 42827550 42607577 42737609 42867618 

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