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Mesoscale Discussion 738
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   MESOSCALE DISCUSSION 0738
   NWS STORM PREDICTION CENTER NORMAN OK
   0316 AM CDT SUN MAY 24 2015

   AREAS AFFECTED...N-CNTRL TX...SERN OK

   CONCERNING...TORNADO WATCH 199...200...

   VALID 240816Z - 240915Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 199...200...CONTINUES.

   SUMMARY...WW/S 199/200 ARE SCHEDULED TO EXPIRE AT 09Z. REPLACEMENT
   WW ISSUANCE IS UNLIKELY...BUT LOCAL TEMPORAL EXTENSION IS POSSIBLE
   WITH A RISK FOR STRONG WIND GUSTS AND PERHAPS A BRIEF/WEAK TORNADO
   IN ASSOCIATION WITH AN MCV EVOLVING NNE FROM THE METROPLEX.

   DISCUSSION...MCV OVER THE NRN PORTION OF THE METROPLEX CURRENTLY IS
   MOVING N AROUND 40 KT ALONG THE I-35 CORRIDOR. LARGER-SCALE
   CONVECTIVE OUTFLOW BOUNDARY IS EVIDENT IN 08Z SURFACE ANALYSIS FROM
   MARSHALL TO ADAIR COUNTY OK. IT APPEARS PLAUSIBLE THAT THIS MCV
   SHOULD CONTINUE ITS NWD TRACK TOWARDS THE RED RIVER BEFORE SHIFTING
   MORE NELY OVER SERN OK. GIVEN RECENT MEASURED WIND GUSTS TO NEAR 40
   KT IN THE PAST HOUR /KDAL AND KRBD/...THESE MAY BE CAPABLE OF
   ISOLATED DAMAGE. WITH WARM SECTOR AIR OVER NERN TX/SERN OK
   CHARACTERIZED BY LOWER 70S SURFACE TEMPS AND NEAR 70 DEW
   POINTS...TRANSIENT/WEAK MESOVORTICES WILL REMAIN
   POSSIBLE...ESPECIALLY AS THE MCV INTERACTS WITH THE LARGER-SCALE
   OUTFLOW BOUNDARY.

   ..GRAMS.. 05/24/2015


   ATTN...WFO...SHV...TSA...FWD...OUN...

   LAT...LON   33219692 33799673 34339591 35019505 35549468 35649452
               35439441 35009445 34219476 33719575 33039637 32889668
               33029686 33219692 

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Page last modified: May 24, 2015
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