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Mesoscale Discussion 541
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   MESOSCALE DISCUSSION 0541
   NWS STORM PREDICTION CENTER NORMAN OK
   0704 PM CDT SAT APR 23 2011
   
   AREAS AFFECTED...NRN TX/SRN OK
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 187...
   
   VALID 240004Z - 240130Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 187
   CONTINUES.
   
   NUMEROUS THUNDERSTORMS...SOME SUPERCELLS...REMAIN OVER NRN TX. RADAR
   TRENDS SHOW THAT OVERALL...ROTATION HAS NOT BEEN VERY STRONG OR
   PERSISTENT...PROBABLY OWING TO HODOGRAPH DEFICIENCIES INCLUDING SOME
   WEAKNESS NOTED IN THE 2-3 KM LAYER. THIS IS QUITE APPARENT FROM THE
   00Z FWD SOUNDING...AND ALSO NOTED IN RUC GUIDANCE.
   
   IN ADDITION...STORMS HAVE BEGUN TO INTERFERE WITH EACH OTHER WITH A
   FEW LEFT SPLITS AFFECTING THE RIGHT MOVERS. AS SUCH...THE TORNADO
   THREAT SHOULD REMAIN RELATIVELY ISOLATED AND BRIEF IN NATURE...BUT
   NONZERO. LARGE HAIL WILL CONTINUE TO BE THE PRIMARY SEVERE THREAT.
   THE FWD SOUNDING SHOWED A 700-500 MB LAPSE RATE OF 8.8 C/KM WITH A
   MEAN BOUNDARY LAYER MIXING RATIO AROUND 12 G/KG.
   
   ..JEWELL.. 04/24/2011
   
   
   ATTN...WFO...SHV...TSA...FWD...OUN...SJT...
   
   LAT...LON   33209464 31589937 33759938 35399463 33209464 
   
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Page last modified: April 24, 2011
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