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Mesoscale Discussion 241
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   MESOSCALE DISCUSSION 0241
   NWS STORM PREDICTION CENTER NORMAN OK
   0545 PM CDT WED APR 08 2015

   AREAS AFFECTED...EXTREME ERN KS...CNTRL AND NRN MO THROUGH WRN IL

   CONCERNING...SEVERE THUNDERSTORM WATCH 34...35...

   VALID 082245Z - 082345Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   34...35...CONTINUES.

   SUMMARY...SEVERE THUNDERSTORM WATCH 34 AND 35 ARE SCHEDULED TO
   EXPIRE AT 23Z AND 00Z RESPECTIVELY. THESE WATCHES WILL LIKELY BE
   REPLACED BY A TORNADO WATCH BEFORE 00Z TO ACCOUNT FOR THE POTENTIAL
   DEVELOPMENT OF NEW STORMS THIS EVENING. THESE STORMS MAY EVOLVE INTO
   SUPERCELLS AND BECOME CAPABLE OF PRODUCING VERY LARGE HAIL AND A FEW
   TORNADOES AS WELL AS DAMAGING WIND GUSTS.

   DISCUSSION...EARLY THIS EVENING AN OUTFLOW BOUNDARY EXTENDED ACROSS
   CNTRL IL WITH A WARM FRONT FROM NRN MO THROUGH NERN KS. ANOTHER
   CONVECTIVE OUTFLOW BOUNDARY WAS INDICATED FROM SERN THROUGH CNTRL
   AND NWRN MO. WARM SECTOR IN VICINITY OF AND SOUTH OF THESE
   BOUNDARIES REMAIN MODERATELY TO STRONGLY UNSTABLE WITH 2000-3000
   J/KG MLCAPE. CLUSTER OF CONVECTION MOVING THROUGH WCNTRL MO DOES NOT
   APPEAR TO BE ROOTED IN THE BOUNDARY LAYER WHICH IS STILL CAPPED BY
   AT LEAST A MODEST INVERSION. OTHER STORMS DEVELOPING ALONG THE WARM
   FRONT NEAR KANSAS CITY APPEAR TO BE SFC BASED. STORMS ARE EXPECTED
   TO UNDERGO SOME INCREASE IN COVERAGE THIS EVENING AS THE LLJ
   STRENGTHENS TO 40-50 KT WHICH SHOULD AUGMENT ASCENT AND ENLARGE
   LOW-LEVEL HODOGRAPHS. THESE STORMS WILL HAVE THE POTENTIAL TO BECOME
   ROOTED IN THE BOUNDARY LAYER BEFORE THE SFC LAYER DECOUPLES LATER
   THIS EVENING. SUPERCELLS WITH LARGE HAIL AND A FEW TORNADOES WILL BE
   POSSIBLE.

   ..DIAL/THOMPSON.. 04/08/2015


   ATTN...WFO...LSX...SGF...EAX...

   LAT...LON   37559421 38539504 39909425 39679150 38919068 37799137
               37559421 

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Page last modified: April 08, 2015
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