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Mesoscale Discussion 704
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   MESOSCALE DISCUSSION 0704
   NWS STORM PREDICTION CENTER NORMAN OK
   0918 PM CDT TUE MAY 19 2015

   AREAS AFFECTED...N TX

   CONCERNING...TORNADO WATCH 190...

   VALID 200218Z - 200345Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 190 CONTINUES.

   SUMMARY...SEVERE/ISOLATED TORNADO RISK CONTINUES ACROSS WW 190.

   DISCUSSION...LATEST RADAR LOOP SHOWS SEVERAL SUPERCELLS CONTINUING
   TO CONGEAL INTO ONE LARGE CLUSTER OVER JACK/WRN WISE COUNTIES
   ATTM...WHILE A LONE STRONG/SEVERE CELL CONTINUES OVER ERN EASTLAND
   CO.  THE STORMS MERGING OVER JACK/WISE COUNTIES HAVE PRODUCED LARGE
   HAIL AND A COUPLE OF TORNADO REPORTS OVER THE PAST TWO HOURS...BUT
   HAVE WEAKENED SOMEWHAT OVER THE PAST HOUR OR SO.  WITH THAT
   SAID...POTENTIAL EXISTS FOR A LARGE SUPERCELL OR TWO TO EMERGE FROM
   THIS ONGOING EVOLUTION...WHICH IF SO WOULD BE LIKELY ACCOMPANIED BY
   SEVERE/ISOLATED TORNADO RISK.  WITH WW 190 SET TO EXPIRE AT
   20/03Z...LOCAL EXTENSION IN TIME MAY BE REQUIRED FOR A FEW COUNTIES.


   ELSEWHERE...MORE WIDESPREAD STORMS CONTINUE TO EVOLVE FARTHER N 
   TOWARD THE RED RIVER VALLEY /MAINLY OVER NEWLY ISSUED TORNADO WATCH
   191/...WITH THIS TREND LIKELY TO CONTINUE AS A SLY LOW-LEVEL JET
   STRENGTHENS THIS EVENING.

   ..GOSS.. 05/20/2015


   ATTN...WFO...FWD...OUN...SJT...

   LAT...LON   31789868 32399911 33219896 33969784 34009699 33109680
               31949795 31789868 

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