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Mesoscale Discussion 682
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   MESOSCALE DISCUSSION 0682
   NWS STORM PREDICTION CENTER NORMAN OK
   0702 PM CDT SUN MAY 22 2016

   AREAS AFFECTED...WRN TX...OK PANHANDLE AND SWRN KS

   CONCERNING...TORNADO WATCH 190...

   VALID 230002Z - 230200Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 190 CONTINUES.

   SUMMARY...THREAT FOR VERY LARGE HAIL...TORNADOES AND DAMAGING WIND
   GUSTS WILL PERSIST THROUGH 03Z FROM PORTIONS OF WRN TX INTO THE TX
   AND OK PANHANDLES AND SWRN KS.

   DISCUSSION...NUMEROUS STORMS INCLUDING SUPERCELLS THAT INITIATED
   ALONG AND JUST AHEAD OF DRYLINE PERSIST FROM NWRN TX NWD INTO SWRN
   KS. VERY LARGE HAIL AND TORNADOES HAVE BEEN REPORTED WITH THESE
   STORMS...AND THIS THREAT WILL LIKELY PERSIST DURING THE NEXT 2-3
   HOURS BEFORE A GRADUAL WEAKENING TREND BEGINS. VWP DATA FROM
   AMARILLO HAVE SHOWN A NOTABLE INCREASE IN BOTH 0-1 KM HODOGRAPHS
   SIZE /200-250 0-1 KM STORM RELATIVE HELICITY/ AND MID-LEVEL WINDS.
   THESE STORMS REMAIN IN A FAVORABLE LOCATION TO INGEST AIR FROM A
   VERY MOIST AND UNSTABLE BOUNDARY LAYER WHERE WARM-SECTOR CAPE RANGES
   FROM 2500-3500 J/KG. STORMS REMAIN RELATIVELY DISCRETE DESPITE
   NUMEROUS STORM MERGERS...AND THE THREAT FOR VERY LARGE HAIL AND
   TORNADOES WILL PERSIST NEXT 2-3 HOURS. 

   ONSET OF NOCTURNAL COOLING WILL RESULT IN A GRADUAL INCREASE IN
   CONVECTIVE INHIBITION...AND STORMS SHOULD BEGIN A WEAKENING TREND BY
   03Z. HOWEVER...THE STRENGTHENING LLJ MIGHT FOSTER THE MAINTENANCE OF
   ONE OR MORE STORM CLUSTERS INTO THE LATE EVENING...BUT IF THIS
   OCCURS PRIMARY THREAT WILL TRANSITION TO DAMAGING WIND.

   ..DIAL.. 05/23/2016


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

   LAT...LON   32190153 34140160 36630150 37890120 37600001 34809998
               32560018 32190153 

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Page last modified: May 23, 2016
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