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Mesoscale Discussion 1498
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   MESOSCALE DISCUSSION 1498
   NWS STORM PREDICTION CENTER NORMAN OK
   0828 PM CDT MON JUL 20 2015

   AREAS AFFECTED...SERN MO / EXTREME NERN AR / SRN IL / EXTREME SWRN
   IND / WRN KY

   CONCERNING...SEVERE THUNDERSTORM WATCH 445...

   VALID 210128Z - 210300Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 445
   CONTINUES.

   SUMMARY...ISOLATED OCCURRENCES OF DAMAGING WIND AND LARGE HAIL WILL
   REMAIN POSSIBLE ACROSS THE WATCH AREA THIS EVENING.  A POTENTIALLY
   GREATER DAMAGING WIND THREAT WILL EXIST ACROSS FAR SRN IL EVENTUALLY
   INTO PARTS OF WRN KY THROUGH 03Z.

   DISCUSSION...A NEARLY CONTINUOUS QLCS HAS EVOLVED FROM JOHNSON
   COUNTY IL TO FULTON COUNTY AR AS OF 0115Z WITH A GENERAL SEWD SYSTEM
   MOTION OF 20-25 KT.  VOLUMETRIC SINGLE-SITE RADAR DATA INDICATE THAT
   A COUPLE OF MORE PRONOUNCED BOWING ELEMENTS WHERE PRESENT WITHIN THE
   ERN EXTENT OF THE QLCS OVER JOHNSON AND PULASKI COUNTIES IN FAR SRN
   IL WITH AN OBSERVED MOTION OF 285/30 KT.  THESE FEATURES ARE
   ASSOCIATED WITH CHANNELS OF HIGHER MOMENTUM FLOW /PER PADUCAH BASE
   VELOCITY DATA/ WITH THE THREAT FOR DAMAGING WINDS AFFECTING
   LOCATIONS NEAR AND JUST TO THE NORTH OF THE PADUCAH AREA WITHIN THE
   NEXT HOUR.

   ELSEWHERE...LOCALLY DAMAGING WINDS AND ISOLATED OCCURRENCES OF
   SEVERE HAIL WILL REMAIN POSSIBLE WITH THE MCS AS IT CONTINUES SEWD
   THROUGH THE REMAINDER OF THE WATCH AREA.

   ..MEAD.. 07/21/2015


   ATTN...WFO...LMK...OHX...IND...PAH...MEG...LSX...SGF...

   LAT...LON   36939128 37289060 37309016 37659014 37848912 37908844
               38248825 38508743 38448705 38108680 37478708 37258743
               37138771 36688775 36648805 36218817 36108844 36228910
               36079004 36229027 36199121 36939128 

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Page last modified: July 21, 2015
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