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Mesoscale Discussion 525
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   MESOSCALE DISCUSSION 0525
   NWS STORM PREDICTION CENTER NORMAN OK
   0634 PM CDT WED MAY 06 2015

   AREAS AFFECTED...WRN AND CENTRAL OK/WRN N TX

   CONCERNING...TORNADO WATCH 133...

   VALID 062334Z - 070100Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 133 CONTINUES.

   SUMMARY...SEVERAL SEVERE/SUPERCELL STORMS CONTINUE ACROSS THE WW
   AREA.  RISK FOR LARGE HAIL AND DAMAGING WINDS ALONG WITH ISOLATED
   TORNADOES CONTINUES.

   DISCUSSION...LATEST RADAR LOOP SHOWS A CLUSTER OF LARGE
   SEVERE/ROTATING STORMS ACROSS WRN N TX ATTM...WHERE SEVERAL REPORTS
   OF GOLF-BALL SIZED HAIL HAVE BEEN RECEIVED.  ANOTHER CLUSTER OF
   STORMS IS ONGOING ACROSS N CENTRAL/NWRN OK...AND HERE TOO LARGE HAIL
   OF GOLF BALL AND UP TO TENNIS-BALL SIZE HAS BEEN REPORTED.

   THE GREATEST TORNADO RISK HAS EXISTED WITH A THIRD CLUSTER OF STORMS
   ACROSS CENTRAL OK...WHERE A LARGE SUPERCELL CONTINUES TO MOVE ACROSS
   NRN CLEVELAND CO ATTM.  THIS STORM HAS PRODUCED TORNADOES...ALONG
   WITH WIND GUSTS TO 70 MPH IN THE PAST HOUR.  JUST W OF THIS INITIAL
   STORM...TWO ADDITIONAL SUPERCELLS CONTINUE TO EVOLVE...WITH LARGE
   HAIL AND DAMAGING WINDS THE MOST LIKELY THREATS AT THIS TIME.

   EXPECT OVERALL RISK TO CONTINUE OVER THE NEXT COUPLE OF HOURS...AS
   THE BACKGROUND KINEMATIC/THERMODYNAMIC ENVIRONMENT REMAINS
   FAVORABLE.  WHILE VERY WEAK/GRADUAL BOUNDARY-LAYER STABILIZATION
   WILL COMMENCE THROUGH/AFTER SUNSET...SOME INCREASE IN LOW-LEVEL WIND
   SPEEDS MAY OFFSET THIS -- MAINTAINING AN ENVIRONMENT SUPPORTIVE OF
   SEVERE STORMS WELL INTO THE EVENING.

   ..GOSS.. 05/06/2015


   ATTN...WFO...TSA...ICT...FWD...OUN...SJT...

   LAT...LON   32499983 36849996 37029710 35319681 32519739 32499983 

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Page last modified: May 07, 2015
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