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Mesoscale Discussion 599
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   MESOSCALE DISCUSSION 0599
   NWS STORM PREDICTION CENTER NORMAN OK
   0708 PM CDT SUN MAY 10 2015

   AREAS AFFECTED...SERN OK...WRN/CNTRL AR...NERN TX

   CONCERNING...TORNADO WATCH 155...157...

   VALID 110008Z - 110145Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 155...157...CONTINUES.

   SUMMARY...A NEW TORNADO WATCH WILL LIKELY BE ISSUED ENE OF WW/S
   155/157 WITH PORTIONS OF THOSE WATCHES POTENTIALLY BEING REPLACED
   WITH A TORNADO THREAT PERSISTING BEYOND 02Z.

   DISCUSSION...A PAIR OF POSSIBLE TORNADIC SUPERCELLS OVER SERN OK ARE
   EVOLVING WITHIN THE STRONGEST LOW-LEVEL SHEAR IN THE WARM SECTOR
   CHARACTERIZED BY 0-1 KM VALUES OF 25-30 KT PER KINX/KSRX VWP DATA.
   WITH THIS BELT OF STRONG SWLYS SHIFTING GRADUALLY EWD THIS
   EVENING...THE RISK FOR TORNADOES WILL PERSIST FOR SEVERAL HOURS
   ESPECIALLY WHERE NEAR-SURFACE SRH IS ENHANCED ALONG REMNANT OUTFLOW
   BOUNDARIES FROM EARLIER AFTERNOON CONVECTION. ADDITIONAL SEVERE
   STORMS OVER E-CNTRL TX SHOULD EVENTUALLY EVOLVE INTO NERN TX LATER
   THIS EVENING.

   ..GRAMS/MEAD.. 05/11/2015


   ATTN...WFO...LZK...SHV...TSA...FWD...

   LAT...LON   34169228 31759442 31699527 32009539 32929534 33449522
               34469520 34879543 35039493 35129386 35209264 35249209
               34599181 34169228 

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Page last modified: May 11, 2015
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