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Mesoscale Discussion 353
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   MESOSCALE DISCUSSION 0353
   NWS STORM PREDICTION CENTER NORMAN OK
   0131 AM CDT SAT APR 18 2015

   AREAS AFFECTED...SOUTHERN LA

   CONCERNING...SEVERE THUNDERSTORM WATCH 71...

   VALID 180631Z - 180730Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 71
   CONTINUES.

   SUMMARY...SEVERE POTENTIAL WILL CONTINUE TO DIMINISH OVERNIGHT
   ACROSS SOUTHERN LA...WITH ONLY A LIMITED POTENTIAL FOR LOCALLY
   DAMAGING WINDS/POSSIBLY SOME HAIL MAINLY IN NEAR-COASTAL AREAS.
   SEVERE THUNDERSTORM WATCH 71 WILL LIKELY BE ALLOWED TO EXPIRE AT/BY
   07Z...WITH NO ADDITIONAL DOWNSTREAM WATCH ISSUANCES ANTICIPATED
   OVERNIGHT.

   DISCUSSION...EMBEDDED WITHIN A BROADER CORRIDOR OF STRATIFORM
   RAINFALL...THE REMNANTS OF A CONVECTIVE LINE CONTINUE TO PROGRESS
   EAST-NORTHEASTWARD ACROSS SOUTH-CENTRAL LA AS OF 615Z/115AM CDT.
   RELATED CONVECTIVE OUTFLOW/SURFACE MESO-HIGH HAS EFFECTIVELY
   SOUTHWARD-SHUNTED MEANINGFUL SURFACE-ROOTED BUOYANCY TO THE
   IMMEDIATE COASTAL AREAS OF SOUTHERN LA. THESE OVERALL TRENDS SUGGEST
   THAT...AT MOST...ONLY A LIMITED POTENTIAL EXISTS FOR LOCALLY
   DAMAGING WINDS/SMALL HAIL ACROSS FAR SOUTHERN LA. SEVERE
   THUNDERSTORM WATCH 71 WILL LIKELY BE ALLOWED TO EXPIRE AT/BY 07Z.

   ..GUYER.. 04/18/2015


   ATTN...WFO...LIX...LCH...

   LAT...LON   29689392 29879372 30349368 30459252 30469176 30339126
               30039087 28859117 29539385 29689392 

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Page last modified: April 18, 2015
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