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Mesoscale Discussion 1712
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   MESOSCALE DISCUSSION 1712
   NWS STORM PREDICTION CENTER NORMAN OK
   0622 PM CDT WED SEP 10 2014

   AREAS AFFECTED...SRN IL...SERN MO

   CONCERNING...SEVERE THUNDERSTORM WATCH 502...

   VALID 102322Z - 110045Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 502
   CONTINUES.

   SUMMARY...ISOLATED DAMAGING WIND RISK MAY YET DEVELOP WITH A QLCS
   MOVING E ACROSS PARTS OF IL. OVERALL RISK SHOULD WANE AFTER SUNSET
   WITH AN ADDITIONAL WW ISSUANCE UNLIKELY BEYOND 01Z EXPIRATION.

   DISCUSSION...RISK OF ISOLATED DAMAGING WINDS FOR A COUPLE MORE HOURS
   SHOULD PRIMARILY EXIST WITH THE BAND OF STORMS LOCATED NEAR THE
   SURFACE COLD FRONT THAT EXTENDED FROM NEAR DNV TO STL AS OF 23Z. THE
   NRN PORTION OF THIS LINE IS AMIDST STRONGER MID-LEVEL FLOW PER ILX
   VWP DATA WITH 50 KT W/SWLYS TO 4 KM AGL. STILL...WITH FLOW NEARLY
   PARALLEL TO THE ORIENTATION OF THE LINE...CONVECTION MAY STRUGGLE TO
   INTENSIFY BEYOND STRONG WIND GUSTS PRODUCING ISOLATED DAMAGING
   WINDS. FARTHER SOUTH...CLUSTERS HAVE STRUGGLED TO ORGANIZED AMIDST
   WEAKER/VEERED FLOW. OTHERWISE...SEVERE THREAT HAS ENDED BEHIND THE
   LINE FROM VERMILLION COUNTY IL TO FRANKLIN COUNTY MO.

   ..GRAMS.. 09/10/2014


   ATTN...WFO...IND...PAH...ILX...LSX...

   LAT...LON   39928752 39698751 38728760 37998836 37309015 37219074
               37579113 38059116 38589046 39038926 39928752 

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Page last modified: September 11, 2014
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