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Mesoscale Discussion 1609
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   MESOSCALE DISCUSSION 1609
   NWS STORM PREDICTION CENTER NORMAN OK
   0603 PM CDT SUN AUG 24 2014

   AREAS AFFECTED...UPPER MS VALLEY

   CONCERNING...TORNADO WATCH 475...

   VALID 242303Z - 250000Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 475 CONTINUES.

   SUMMARY...ISOLATED TORNADOES REMAIN POSSIBLE WITH DISCRETE
   SUPERCELLS THAT EVOLVE ACROSS THE WATCH.

   DISCUSSION...ISOLATED DISCRETE SUPERCELLS CONTINUE TO MATURE ALONG
   AN AXIS FROM CASS COUNTY...SWD TO WRIGHT COUNTY MN.  DURING THE LAST
   HALF HOUR ONE STORM IN PARTICULAR...NE OF STC...HAS STRENGTHENED
   SIGNIFICANTLY AND EXHIBITS TORNADO CHARACTERISTICS.  THIS ACTIVITY
   IS EVOLVING IMMEDIATELY AHEAD OF EJECTING SHORT WAVE WITHIN A
   CORRIDOR OF MODEST INSTABILITY THAT RESIDES OVER MUCH OF ERN MN. 
   LATEST THINKING IS CONVECTION SHOULD REMAIN ORGANIZED AS IT SPREADS
   DOWNSTREAM.  ANY NEGATIVE IMPACT OF COOLER LAKE SUPERIOR SHOULD
   REMAIN ACROSS THE ARROWHEAD WHERE SFC TEMPERATURES ARE HOLDING IN
   THE LOWER 70S.

   ..DARROW.. 08/24/2014


   ATTN...WFO...DLH...ARX...MPX...FGF...

   LAT...LON   44589444 48519561 48519299 44569201 44589444 

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Page last modified: August 25, 2014
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