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Mesoscale Discussion 580
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   MESOSCALE DISCUSSION 0580
   NWS STORM PREDICTION CENTER NORMAN OK
   1115 PM CDT MON MAY 09 2016

   AREAS AFFECTED...MUCH OF SOUTHERN/EASTERN AR AND FAR NORTHEAST TX

   CONCERNING...TORNADO WATCH 157...

   VALID 100415Z - 100545Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 157 CONTINUES.

   SUMMARY...TORNADOES/DAMAGING WINDS AND SPORADIC SEVERE HAIL
   POTENTIAL WILL CONTINUE INTO THE OVERNIGHT...PARTICULARLY ACROSS
   EAST-CENTRAL AR...MUCH OF SOUTHERN AR...AND IN THE SHORT-TERM ACROSS
   EXTREME NORTHEAST TX. TORNADO WATCH 157 CONTINUES UNTIL 07Z/2AM CDT.

   DISCUSSION...A BROKEN LINE OF INTENSE THUNDERSTORMS...CURRENTLY
   PARALLELING THE I-30 CORRIDOR FROM NEAR LITTLE ROCK SOUTHWESTWARD TO
   TEXARKANA AS OF 11PM CDT/04Z...WILL CONTINUE GENERALLY
   EAST-SOUTHEASTWARD THROUGH THE FIRST PART OF THE OVERNIGHT. A COUPLE
   OF LINE-EMBEDDED MESOVORTICES HAVE BEEN RECENTLY NOTED JUST
   WEST-SOUTHWEST OF THE LITTLE ROCK AREA...WHILE ON THE SOUTHWEST EDGE
   OF THESE STORMS...A HP SUPERCELL-TO-BOW ECHO TRANSITION APPEARS TO
   BE ONGOING NEAR TEXARKANA. IN THE PRESENCE OF 60S F SURFACE
   DEWPOINTS...VERY STRONG LOW-LEVEL SHEAR/SRH OF 300-600 M2/S2 AS PER
   LITTLE ROCK/SHREVEPORT WSR-88D VWP DATA WILL SUPPORT HIGHLY
   ORGANIZED QUASI-LINEAR STRUCTURES WITH EMBEDDED BOWS/MESOVORTICES.
   TORNADOES/DAMAGING WINDS WILL REMAIN POSSIBLE OVER THE NEXT FEW
   HOURS...WITH LARGE HAIL ALSO A POSSIBILITY WITH THE TEXARKANA-AREA
   STORMS ACROSS FAR SOUTHERN AR...WHERE A RESERVOIR OF MORE UNSTABLE
   INFLOW EXISTS.

   ..GUYER.. 05/10/2016


   ATTN...WFO...MEG...JAN...LZK...SHV...

   LAT...LON   34939253 35989203 36199139 35868999 33409191 33019355
               33149510 34169339 34939253 

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Page last modified: May 10, 2016
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