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Mesoscale Discussion 335
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   MESOSCALE DISCUSSION 0335
   NWS STORM PREDICTION CENTER NORMAN OK
   0116 PM CDT SUN APR 13 2014

   AREAS AFFECTED...CENTRAL/EASTERN NEBRASKA AND NORTHWEST IOWA

   CONCERNING...HEAVY SNOW 

   VALID 131816Z - 140015Z

   SUMMARY...HEAVY SNOW...INCLUDING ISOLATED THUNDERSNOW...WILL DEVELOP
   THROUGH THE AFTERNOON AND EVENING HOURS. ALTHOUGH SNOWFALL INTENSITY
   WILL BE HIGH...RECENT WARM CONDITIONS WILL ACT TO LIMIT
   ACCUMULATIONS.

   DISCUSSION...A STRONG SURFACE COLD FRONT CONTINUES TO PUSH SOUTHWARD
   ACROSS THE CENTRAL PLAINS. IN ITS WAKE...SURFACE TEMPERATURES HAVE
   FALLEN INTO THE UPPER 20S TO MIDDLE 30S ACROSS MUCH OF EASTERN
   NEBRASKA...WITH THE EXCEPTION OF FAR SOUTHEASTERN NEBRASKA WHERE
   TEMPERATURES ARE IN THE 40S. AT THE SAME TIME...STRONG ASCENT IN THE
   WARM CONVEYOR BELT /APPROXIMATELY BOUNDED BY THE 850MB FRONTOGENESIS
   ON THE SOUTHEAST AND THE 500MB FRONTOGENSIS TO THE NORTHWEST/ AND
   STEEP MID-LEVEL LAPSE RATES WILL CONTINUE TO SUPPORT HEAVY
   PRECIPITATION /INCLUDING THUNDERSTORMS/. AS THE LOW-LEVEL COLD AIR
   STRENGTHENS/DEEPENS WITH TIME...PRECIPITATION OVER EASTERN NEBRASKA
   AND NORTHWEST IOWA SHOULD BEGIN TO MIX WITH...AND EVENTUALLY CHANGE
   OVER TO...SNOW. LOCALLY HEAVY SNOW /INCLUDING THUNDERSNOW/ WILL BE
   POSSIBLE THROUGH THE AFTERNOON AND EVENING. 

   ALTHOUGH SNOW INTENSITY WILL BE AROUND 1 INCH PER HOUR /AND EVEN
   HIGHER IN THUNDERSTORMS/...ACCUMULATIONS SHOULD REMAIN LESS THAN
   TYPICALLY EXPECTED GIVEN THE RECENT WARM WEATHER AND WARM GROUND
   CONDITIONS.

   ..MARSH.. 04/13/2014


   ATTN...WFO...DMX...FSD...OAX...TOP...GID...LBF...GLD...

   LAT...LON   41480059 42409963 43229680 43039498 42129466 40949629
               39619845 39450006 40700089 41480059 

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Page last modified: April 14, 2014
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