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Mesoscale Discussion 61
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   Mesoscale Discussion 0061
   NWS Storm Prediction Center Norman OK
   0153 PM CST Mon Jan 16 2017

   Areas affected...Southern MN...west-central WI...northern IA

   Concerning...Freezing rain 

   Valid 161953Z - 170100Z

   SUMMARY...Freezing rain coverage will gradually increase over the
   next several hours. While precipitation rates are generally expected
   to be light, some areas may briefly see rates over 0.05"/hour.

   DISCUSSION...Large area of light to moderate precipitation
   associated with the deformation zone of the maturing cyclone
   centered over KS will continue to gradually shift northward into an
   airmass characterized by surface temperatures in the upper 20s and
   low 30s. Despite some modest surface warming resulting from latent
   heat release and/or sensible heat fluxes associated with liquid
   precipitation, temperatures are largely expected to hold below
   freezing. As a result, the coverage of freezing rain is expected to
   increase across the region. Freezing rain rates will generally be
   light, but may briefly exceed 0.05"/hr, particularly in the area of
   increased warm-air advection and deformation nearest the dry slot.

   ..Mosier.. 01/16/2017


   ATTN...WFO...GRB...ARX...MPX...DMX...FSD...

   LAT...LON   43459665 44029624 44629412 44729108 44318972 43748969
               43149322 43039514 43139633 43459665 

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Page last modified: January 17, 2017
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