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Mesoscale Discussion 442
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   MESOSCALE DISCUSSION 0442
   NWS STORM PREDICTION CENTER NORMAN OK
   0746 PM CDT FRI APR 24 2015

   AREAS AFFECTED...NCNTRL THROUGH NERN TX...NRN LA AND EXTREME SWRN AR

   CONCERNING...TORNADO WATCH 100...103...

   VALID 250046Z - 250215Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 100...103...CONTINUES.

   SUMMARY...THREAT FOR DAMAGING WIND...LARGE HAIL AND A FEW TORNADOES
   WILL PERSIST OVER REMAINING PARTS OF WW 100 AND 103. GREATEST SEVERE
   THREAT IS EXPECTED ACROSS NERN TX...SWRN AR AND NWRN LA THROUGH 03Z.

   DISCUSSION...STORMS JUST EAST OF DFW METRO AREA HAVE EVOLVED INTO AN
   ORGANIZED MCS WITH BOWING STRUCTURES AND IS MOVING EAST BETWEEN
   45-50 KT. DOWNSTREAM VWP DATA FROM SHREVEPORT LA INDICATE IMPRESSIVE
   WIND PROFILES WITH LARGE 0-1 KM HODOGRAPHS AND 60+ KT 0-6 KM SHEAR.
   EAST OF THE BOWING SEGMENT...POTENTIAL STILL EXISTS FOR DISCRETE
   CELLS TO ORGANIZE WITHIN ZONE OF WARM ADVECTION AND ISENTROPIC
   ASCENT ALONG AND NORTH OF WARM FRONT FROM NERN TX INTO NRN LA AND
   SRN AR. THESE STORMS WILL PERSIST ALONG THE NRN FRINGE OF MODERATE
   INSTABILITY. DAMAGING WIND AND LARGE HAIL ARE THE PRIMARY THREATS
   WITHIN THE MORE LINEAR SEGMENT...BUT QLCS TORNADOES WITH OCCASIONAL
   EMBEDDED MESOVORTICES ALSO REMAIN PROBABLE. OTHERWISE...A TORNADO
   RISK WILL CONTINUE WITH ANY DISCRETE STORMS THAT CAN ANCHOR WITHIN
   THE NEAR-SFC LAYER.

   ..DIAL.. 04/25/2015


   ATTN...WFO...LZK...LCH...SHV...HGX...FWD...EWX...SJT...

   LAT...LON   32409704 33109698 33489544 33629362 33249242 32329213
               31109359 31449481 31579603 31319730 30659956 30879999
               31319950 32409704 

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Page last modified: April 25, 2015
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