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Mesoscale Discussion 755
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   MESOSCALE DISCUSSION 0755
   NWS STORM PREDICTION CENTER NORMAN OK
   1234 AM CDT MON MAY 25 2015

   AREAS AFFECTED...SW KS

   CONCERNING...TORNADO WATCH 206...208...

   VALID 250534Z - 250630Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 206...208...CONTINUES.

   SUMMARY...WITH WW/S 206/208 EXPIRING AT 06Z...SEVERE RISK MAY
   PERSIST THROUGH AT LEAST 07Z ACROSS A SMALL PART OF SW KS WITH A
   LOCAL WW EXTENSION POSSIBLE.

   DISCUSSION...SUPERCELL CLUSTER MAY ALREADY BE IN THE PROCESS OF
   WEAKENING NEAR THE DDC AREA AS INITIAL SUPERCELL RESPONSIBLE FOR
   SEVERAL TORNADO REPORTS BECAME ABSORBED WITH AN UPSTREAM CLUSTER.
   THE INTENSITY OF THE LOW-LEVEL MESOCYCLONE HAS WEAKENED DURING THIS
   MERGING PROCESS...BUT TRANSIENT STORM-SCALE INTENSIFICATION COULD
   STILL RESULT IN BRIEF TORNADOES/DAMAGING WINDS THROUGH AT LEAST 07Z.
   OVERALL...THIS CLUSTER SHOULD STRUGGLE TO INTENSIFY GREATLY AMIDST
   SLOWLY INCREASING MLCIN AND MODEST LOW-LEVEL SHEAR WITH 0-1 KM
   VALUES AROUND 15 KT SAMPLED EARLIER IN DDC VWP DATA. AS THE LLJ
   GRADUALLY VEERS ACROSS THE ERN PANHANDLES/WRN OK THIS
   MORNING...INTENSITY SHOULD WANE AS SUPPORTED BY AN ARRAY OF EVENING
   CAM GUIDANCE.

   ..GRAMS.. 05/25/2015


   ATTN...WFO...OUN...DDC...AMA...

   LAT...LON   37410067 37880015 38159961 38159929 37989904 37469916
               37209937 36959974 36940022 37260065 37410067 

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Page last modified: May 25, 2015
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