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Mesoscale Discussion 510
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   MESOSCALE DISCUSSION 0510
   NWS STORM PREDICTION CENTER NORMAN OK
   1037 PM CDT WED APR 17 2013
   
   AREAS AFFECTED...NERN THROUGH CENTRAL AND SWRN OK
   
   CONCERNING...TORNADO WATCH 116...
   
   VALID 180337Z - 180430Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 116 CONTINUES.
   
   SUMMARY...THE SVR THREAT WILL CONTINUE INTO THE EARLY MORNING HOURS
   THURSDAY...PRIMARILY IN THE FORM OF LINE/BOWING SEGMENTS WITH
   DAMAGING WINDS AND ISOLATED LARGE HAIL. A NEW WW WILL BE COORDINATED
   PRIOR TO 0345Z.
   
   DISCUSSION...THE FRONTAL BOUNDARY EXTENDING FROM NERN THROUGH SWRN
   OK HAS BEEN AUGMENTED BY CONVECTIVE OUTFLOWS...AND THE
   OUTFLOW-ASSOCIATED WIND SHIFT LINE EXTENDS FROM JUST E OF BVO TO NR
   PVJ AND DUNCAN AT 03Z. PRONOUNCED BOWING SEGMENTS WERE LOCATED ALONG
   OR JUST IN ADVANCE OF THIS LINE...WITH SEMI-DISCRETE CELLS LOCATED
   OVER SWRN OK. AS THE FRONTAL BOUNDARY BEGINS TO MOVE EWD OVERNIGHT
   IN RESPONSE TO AN EWD-MOVING UPPER TROUGH...THE TENDENCY WILL BE FOR
   A MORE LINEAR ORGANIZATION TO TSTMS WITH THE RISK FOR DAMAGING WINDS
   AND EMBEDDED MESOVORTICES. A TORNADO OR TWO REMAINS POSSIBLE ALONG
   WITH ISOLATED LARGE HAIL REPORTS.
   
   BEHIND THE FRONT...THE PRESENCE OF ELEVATED INSTABILITY WITH MUCAPES
   OF 1500-2000 J/KG AND EFFECTIVE SHEAR BETWEEN 40 AND 50KT WILL
   RESULT IN A CONTINUED THREAT OF SVR HAIL INTO THE EARLY MORNING
   HOURS.
   
   A NEW WW WILL BE COORDINATED SHORTLY WITH WFO OUN AND WFO TSA.
   
   ..BUNTING/THOMPSON.. 04/18/2013
   
   
   ATTN...WFO...TSA...FWD...OUN...
   
   LAT...LON   36989675 36989481 36219465 34819615 33869676 34059811
               34139897 34709882 36989675 
   
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