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Mesoscale Discussion 390
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   MESOSCALE DISCUSSION 0390
   NWS STORM PREDICTION CENTER NORMAN OK
   1016 PM CDT SUN APR 19 2015

   AREAS AFFECTED...LOWER MS VALLEY

   CONCERNING...TORNADO WATCH 84...

   VALID 200316Z - 200415Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 84 CONTINUES.

   SUMMARY...SEVERE THREAT CONTINUES ACROSS WW.

   DISCUSSION...WELL-DEFINED MCV HAS EVOLVED OVER NERN AR SOUTH OF JBR.
   THIS FEATURE IS RACING ENEWD AT ROUGHLY 45KT AND WILL SOON INFLUENCE
   LEADING BAND OF CONVECTION OVER WRN TN.  PRIMARY STORM MODE APPEARS
   TO BE TRENDING TOWARD LINEAR STRUCTURES...THOUGH EMBEDDED SUPERCELLS
   MAY CONTINUE IN THE PRESENCE OF STRONG SHEAR.  GIVEN CURRENT
   SPEED/MOVEMENT OF AFOREMENTIONED MCV...LEADING EDGE OF STRONG
   CONVECTION MAY SPREAD EAST OF WW INTO MIDDLE TN BY 06Z.

   ..DARROW.. 04/20/2015


   ATTN...WFO...OHX...PAH...MEG...JAN...LIX...LZK...LCH...SHV...

   LAT...LON   30969255 36469051 36458780 30959001 30969255 

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