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Mesoscale Discussion 561
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   MESOSCALE DISCUSSION 0561
   NWS STORM PREDICTION CENTER NORMAN OK
   0701 PM CDT SUN MAY 08 2016

   AREAS AFFECTED...WEST-CENTRAL OK AND WESTERN NORTH TX

   CONCERNING...TORNADO WATCH 149...

   VALID 090001Z - 090130Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 149 CONTINUES.

   SUMMARY...WIDELY SCATTERED SPLITTING SUPERCELLS CAPABLE OF LARGE
   HAIL...LOCALLY DAMAGING WINDS...AND TORNADO POTENTIAL WILL CONTINUE
   TO SPREAD GENERALLY EAST-NORTHEASTWARD ACROSS SOUTHWEST OK AND
   TOWARD MUCH OF CENTRAL OK THROUGH MID-EVENING. TORNADO WATCH 149
   CONTINUES UNTIL 02Z/9PM CDT.

   DISCUSSION...SPLITTING SUPERCELLS HAVE BEEN PREVALENT ACROSS THE
   WESTERN HALF OF OKLAHOMA THROUGH LATE AFTERNOON/EARLY
   EVENING...PRESUMABLY ATTRIBUTABLE TO RELATIVELY STRAIGHT HODOGRAPHS
   ABOVE THE SURFACE. LARGE HAIL WILL REMAIN A DISTINCT POSSIBILITY
   WITH THE LEFT-MOVING STORMS AMID AMPLE CLOUD-BEARING SHEAR/MODEST
   BUOYANCY...WHILE ISOLATED TORNADO/LARGE HAIL AND LOCALLY DAMAGING
   WIND POTENTIAL WILL EXIST IN THE SHORT-TERM WITH ANY RIGHT-MOVING
   SUPERCELLS ESPECIALLY ACROSS SOUTHWEST/SOUTH-CENTRAL OK...SUCH AS
   THE CURRENT /645 PM CDT/ SUPERCELL BETWEEN LAWTON AND THE
   DUNCAN/MARLOW AREAS. A 56 KT WIND GUST WAS MEASURED AT LAWTON AT
   AROUND 622 PM CDT/2322Z. EVEN WHILE LOW-LEVEL SHEAR WILL INCREASE
   THIS EVENING...CONSIDERABLE/STABLE-CHARACTER CLOUD COVER HAS
   PERSISTED ACROSS THE EASTERN HALF OF OK. CURRENT THINKING IS THAT
   WEAK LOW-LEVEL PARCEL ACCELERATIONS SHOULD EVENTUALLY LEAD TO A
   DIMINISHING INTENSITY TREND FOR MOST STORMS AS THEY PROGRESS TO
   NEAR/EAST OF THE I-35 CORRIDOR.

   ..GUYER.. 05/09/2016


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

   LAT...LON   36979867 36869721 33759755 34239959 35849937 36979867 

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Page last modified: May 09, 2016
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