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Mesoscale Discussion 521
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   MESOSCALE DISCUSSION 0521
   NWS STORM PREDICTION CENTER NORMAN OK
   1112 PM CDT WED MAY 07 2014

   AREAS AFFECTED...NCNTRL TX / SRN AND CNTRL OK

   CONCERNING...SEVERE THUNDERSTORM WATCH 129...

   VALID 080412Z - 080545Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 129
   CONTINUES.

   SUMMARY...A THREAT FOR ISOLATED LARGE HAIL AND WIND DAMAGE SHOULD
   CONTINUE ACROSS THE ERN PART OF WW 129 OVER THE NEXT 1 TO 2 HOURS.
   THE THREAT MAY DEVELOP TO THE EAST OF THE WATCH WHERE A WATCH
   EXTENSION MAY BECOME NECESSARY AFTER MIDNIGHT.

   DISCUSSION...A BROKEN LINE OF STRONG TO SEVERE THUNDERSTORMS IS
   LOCATED FROM NEAR LAWTON OK SWD TO JUST EAST OF ABILENE TX. ANOTHER
   SUPERCELL IS MOVING INTO THE WRN PARTS OF OKLAHOMA CITY. THESE
   STORMS ARE LOCATED ALONG A CORRIDOR OF MODERATE INSTABILITY WHERE
   SFC DEWPOINTS ARE IN THE MID TO UPPER 60S F AND MLCAPE IS ESTIMATED
   AROUND 1500 J/KG. THIS ALONG WITH INCREASING LOW-LEVEL FLOW SHOULD
   HELP SUSTAIN THE STORMS FOR SEVERAL MORE HOURS AS A JET MAX NEAR 850
   MB STRENGTHENS ACROSS THE SRN AND CNTRL PLAINS. MODERATE DEEP LAYER
   SHEAR EVIDENT ON THE OKLAHOMA CITY AND FORT WORTH WSR-88D VWPS AND
   STEEP MID-LEVEL LAPSE RATES WILL BE FAVORABLE FOR ISOLATED LARGE
   HAIL ESPECIALLY WITH STORMS THAT ROTATE. A WIND DAMAGE THREAT WILL
   ALSO BE POSSIBLE WITH SUPERCELLS AND SHORT LINE-SEGMENTS.

   ..BROYLES/THOMPSON.. 05/08/2014


   ATTN...WFO...FWD...OUN...

   LAT...LON   35459798 34509824 32779887 32319894 32149864 32539712
               35369645 35459798 

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Page last modified: May 08, 2014
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