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Mesoscale Discussion 269
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   MESOSCALE DISCUSSION 0269
   NWS STORM PREDICTION CENTER NORMAN OK
   1056 PM CDT THU APR 09 2015

   AREAS AFFECTED...WESTERN KY/SOUTHERN IL AND CENTRAL/SOUTHERN INDIANA
   INTO WESTERN/NORTHERN KY AND WESTERN OH

   CONCERNING...TORNADO WATCH 50...

   VALID 100356Z - 100530Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 50 CONTINUES.

   SUMMARY...AT LEAST ISOLATED DAMAGING WIND POTENTIAL...ALONG WITH
   SOME TORNADO/HAIL RISK...WILL CONTINUE INTO THE FIRST PART OF THE
   OVERNIGHT FROM WESTERN KY/SOUTHERN IL INTO MUCH OF CENTRAL/SOUTHERN
   INDIANA AND EVENTUALLY NORTHERN KY/WESTERN OH. TORNADO WATCH 50
   CONTINUES...AND A NEW WATCH MAY BE NEEDED WITHIN THE HOUR FOR
   ADDITIONAL PORTIONS OF SOUTHERN/EASTERN INDIANA AND POSSIBLY
   NORTHERN KY/WESTERN OH.

   DISCUSSION...EARLIER SEMI-DISCRETE STORMS HAVE GENERALLY CONGEALED
   WITH UPSCALE QUASI-LINEAR GROWTH FROM THE WABASH RIVER VICINITY
   ALONG THE INDIANA/IL BORDER SOUTHWESTWARD TO NEAR THE CONFLUENCE OF
   THE OH/MS RIVERS AS OF 0345Z. A SLIGHT COOLING OF THE BOUNDARY LAYER
   HAS OCCURRED IN MOST PRE-SQUALL LINE AREAS OVER THE PAST FEW HOURS.
   HOWEVER...MODEST CINH IN THE PRESENCE OF AMPLE FORCING FOR
   ASCENT/MIXING AND A CONTINUALLY STRENGTHENING LOW-LEVEL WIND FIELD
   WILL CONTINUE TO SUPPORT ORGANIZED QUASI-LINEAR MODES INCLUDING
   EMBEDDED BOWS. REGIONAL WSR-88D VWP DATA IS SAMPLING 60+ KT
   SOUTHWESTERLY WINDS IN THE LOWEST 1 KM AGL. NEAR-SEVERE-CALIBER WIND
   GUSTS WILL REMAIN A POSSIBILITY THROUGH THE FIRST PART OF THE
   OVERNIGHT...WITH AT LEAST SOME TORNADO/EMBEDDED HAIL RISK AS WELL.

   ..GUYER.. 04/10/2015


   ATTN...WFO...ILN...LMK...IWX...IND...PAH...ILX...

   LAT...LON   36998923 38828816 40018642 40718401 39238392 36868736
               36998923 

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Page last modified: April 10, 2015
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