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Mesoscale Discussion 647
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   MESOSCALE DISCUSSION 0647
   NWS STORM PREDICTION CENTER NORMAN OK
   0715 PM CDT WED MAY 21 2014

   AREAS AFFECTED...TX PANHANDLE SWD TO THE TX BIG BEND

   CONCERNING...SEVERE THUNDERSTORM WATCH 168...

   VALID 220015Z - 220115Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 168
   CONTINUES.

   SUMMARY...AN ISOLATED SVR WIND GUST AND HAIL THREAT CONTINUES IN
   ASSOCIATION WITH A BROKEN LINE OF TSTMS FROM NEAR I-40 TO THE TX BIG
   BEND. THE LOSS OF DIURNAL HEATING IN THE NEXT COUPLE HRS SHOULD
   RESULT IN THIS THREAT SLOWLY DIMINISHING AND BECOMING MORE
   LOCALIZED.

   DISCUSSION...A BROKEN LINE OF TSTMS GENERALLY ORIENTED N-S ACROSS W
   TX CONTINUES TO BE MAINTAINED AS AN IMPULSE EJECTS NEWD OUT OF NM.
   EMBEDDED MULTICELL CLUSTERS HAVE PRODUCED ISOLATED INSTANCES OF SVR
   WIND/HAIL...INCLUDING A 63 MPH GUST SAMPLED NEAR MORTON PER THE TTU
   WEST TEXAS MESONET. GOES 14 ONE-MINUTE IMAGERY SHOWS CONTINUED
   UPDRAFT GENERATION WITHIN A MORE MATURE CLUSTER JUST E OF AMA...AND
   ADDITIONAL TSTM DEVELOPMENT W OF MAF...SUGGESTIVE OF A CONTINUED SVR
   HAIL/WIND THREAT FOR AT LEAST THE NEXT 1-2 HRS. HOWEVER...THE LOSS
   OF DIURNAL HEATING...ALONG WITH CONTINUED BOUNDARY LAYER
   STABILIZATION VIA CONVECTIVE COLD POOL GENERATION...SHOULD FOSTER A
   SLOW DOWNTREND IN TSTM INTENSITY...WITH THE SVR THREAT BECOMING MORE
   LOCALIZED WITH TIME.

   ..ROGERS.. 05/22/2014


   ATTN...WFO...SJT...LUB...AMA...MAF...

   LAT...LON   29660258 29160283 28930313 28950344 29520360 32110292
               35520273 35560031 35520007 34950032 34330118 33130117
               32410151 29690191 29660258 

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Page last modified: May 22, 2014
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