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Mesoscale Discussion 784
MD 784 graphic

   MESOSCALE DISCUSSION 0784
   NWS STORM PREDICTION CENTER NORMAN OK
   0332 PM CDT THU MAY 23 2013

   AREAS AFFECTED...PANHANDLE/NWRN TX

   CONCERNING...TORNADO WATCH 213...

   VALID 232032Z - 232200Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 213 CONTINUES.

   SUMMARY...GREATEST NEAR-TERM POTENTIAL FOR VERY LARGE HAIL...SEVERE
   WINDS AND MESOCYCLONE TORNADOES SHOULD REMAIN WITH A SUPERCELL
   CLUSTER IN THE ERN HALF OF THE LUB CWA. ADDITIONAL TSTMS MAY DEVELOP
   BY 22Z ALONG THE OCCLUDED OUTFLOW/FRONT FARTHER NW IN THE WRN TX
   PANHANDLE.

   DISCUSSION...SUPERCELL OVER FLOYD COUNTY HAS PERSISTENTLY MOVED
   SLOWLY SWD...WHILE ADDITIONAL UPDRAFTS HAVE FORMED SEWD ON THE COOL
   SIDE OF THE INCREASINGLY DIFFUSE LARGER-SCALE OUTFLOW BOUNDARY. WITH
   60S SURFACE DEW POINTS PERSISTING N/E OF THE OUTFLOW ACROSS THE LOW
   ROLLING PLAINS INTO N-CNTRL TX /SAMPLED BY 20Z FWD RAOB/...AND
   SURFACE TEMPERATURES S/W OF THE BOUNDARY FROM 95-100 DEG F...LARGE
   INSTABILITY WILL REMAIN FAVORABLE FOR ALL SEVERE HAZARDS WITH
   ACTIVITY GRADUALLY SHIFTING S/SEWD.

   FARTHER NW...INITIAL CONVECTIVE ATTEMPTS HAVE FAILED TO YIELD TSTMS
   ALONG THE SLOWLY WWD-PROGRESSING OUTFLOW WHICH HAS ESSENTIALLY
   OCCLUDED WITH THE REMNANT QUASI-STATIONARY FRONTAL ZONE. ALTHOUGH
   TEMPERATURES ARE NOT QUITE AS WARM AS FARTHER S...REINFORCING
   OUTFLOW FROM THE SUPERCELL CLUSTERS MAY YIELD SUSTAINABLE CONVECTIVE
   DEVELOPMENT INTO THE WRN TX PANHANDLE.

   ..GRAMS.. 05/23/2013


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

   LAT...LON   34210044 33809969 33189959 32789978 32650017 32530071
               32960149 33780214 34380237 35110256 35410245 35550224
               35490202 35180199 34620190 34400163 34160095 34210044 

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Page last modified: May 23, 2013
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