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Mesoscale Discussion 571
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   MESOSCALE DISCUSSION 0571
   NWS STORM PREDICTION CENTER NORMAN OK
   0704 PM CDT SUN MAY 11 2014

   AREAS AFFECTED...NWRN INTO CNTRL IA

   CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 

   VALID 120004Z - 120100Z

   PROBABILITY OF WATCH ISSUANCE...80 PERCENT

   SUMMARY...A NEW TORNADO WATCH WILL LIKELY BE ISSUED BY 01Z FROM NWRN
   INTO CNTRL IA...DOWNSTREAM OF ONGOING ACTIVITY ACROSS ERN NEB. A
   MORE WIDESPREAD DAMAGING WIND THREAT MAY DEVELOP THIS EVENING...IN
   ADDITION TO A CONTINUING THREAT OF TORNADOES AND LARGE HAIL.

   DISCUSSION...INTENSE CONVECTION CONTINUES ACROSS ERN NEB...WITH
   ADDITIONAL RECENT DEVELOPMENT NOTED IN NWRN IA. CONVECTIVE MODE HAS
   BECOME COMPLICATED OVER ERN NEB...WITH EMBEDDED SUPERCELL STRUCTURES
   NOTED WITHIN A BROAD CONVECTIVE PLUME. CELL MERGERS AND EVENTUAL
   COLD POOL FORMATION MAY RESULT IN A MORE LINEAR STRUCTURE EMERGING
   INTO WRN/CNTRL IA LATER THIS EVENING...WITH A DAMAGING WIND THREAT
   INCREASING IN ADDITION TO THE THREAT OF TORNADOES AND LARGE HAIL. A
   LOCALLY ENHANCED TORNADO THREAT WILL BE PRESENT IN A ZONE OF
   ENLARGED LOW-LEVEL HODOGRAPHS BETWEEN A STATIONARY FRONT FROM SWRN
   INTO S-CNTRL IA AND AN ADDITIONAL BOUNDARY FURTHER TO THE NORTH
   ACROSS NWRN INTO N-CNTRL IA. A TORNADO WATCH WILL LIKELY BE ISSUED
   BY 01Z EXTENDING INTO AREAS OF NWRN INTO CNTRL IA.

   ..DEAN/THOMPSON.. 05/12/2014


   ATTN...WFO...DMX...FSD...OAX...

   LAT...LON   41749644 42179637 42449612 42609514 42719447 42649397
               42589345 42409326 42149311 41919299 41679291 41419287
               41209289 41059297 40689314 40589359 40579385 40589407
               40599410 40699433 40779440 40779440 40959450 41279455
               41449468 41609483 41779520 41749644 

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Page last modified: May 12, 2014
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