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Mesoscale Discussion 303
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   MESOSCALE DISCUSSION 0303
   NWS STORM PREDICTION CENTER NORMAN OK
   1040 PM CDT SUN APR 06 2014

   AREAS AFFECTED...S CENTRAL LA

   CONCERNING...TORNADO WATCH 64...

   VALID 070340Z - 070445Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 64 CONTINUES.

   SUMMARY...SOME TORNADO RISK WILL PERSIST BEYOND THE SCHEDULED 04Z
   EXPIRATION...SO WW 64 MAY NEED TO BE EXTENDED LOCALLY UNTIL 06Z FOR
   PART OF S CENTRAL LA.

   DISCUSSION...LOW 70S BOUNDARY LAYER DEWPOINTS ARE ESTABLISHED IN
   WARM SECTOR ACROSS SRN LA...WHERE SURFACE-BASED CONVECTION HAS BEEN
   INCREASING IN COVERAGE/INTENSITY DURING THE PAST HOUR.  THOUGH WINDS
   ABOVE THE SURFACE HAVE VEERED TO SSWLY AND VWP/S REVEAL LARGELY
   STRAIGHT HODOGRAPHS...DEEP-LAYER SHEAR IS STILL MORE THAN SUFFICIENT
   FOR SUPERCELLS.  THERE WILL BE A CONTINUED WINDOW OF OPPORTUNITY FOR
   WARM SECTOR SUPERCELLS /GIVEN THE RECENT INCREASE IN
   CONVECTION/...SO A LOCAL WATCH EXTENSION UNTIL 06Z WILL NEED TO BE
   CONSIDERED BEFORE 04Z.

   ..THOMPSON/GUYER.. 04/07/2014


   ATTN...WFO...LIX...LCH...

   LAT...LON   30039133 29679125 29449159 29459221 29739260 30059259
               30319246 30669215 30819186 30489176 30039133 

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Page last modified: April 07, 2014
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