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Mesoscale Discussion 267
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   MESOSCALE DISCUSSION 0267
   NWS STORM PREDICTION CENTER NORMAN OK
   0923 PM CDT THU APR 09 2015

   AREAS AFFECTED...PORTIONS OF FAR ERN TX...NRN LA...SRN AR

   CONCERNING...TORNADO WATCH 43...

   VALID 100223Z - 100330Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 43 CONTINUES.

   SUMMARY...A FEW STRONG TO SEVERE THUNDERSTORMS CONTINUE ACROSS
   PORTIONS OF WW 43. WHILE A GENERAL WEAKENING TREND HAS BEEN
   OBSERVED...THE THREAT FOR A COUPLE OF SEVERE WIND GUSTS MAY CONTINUE
   PAST 03Z. TRENDS WILL BE MONITORED FOR A POTENTIAL LOCAL EXTENSION
   OF WW 43.

   DISCUSSION...TWO REGIMES OF STRONG TO SEVERE TSTMS CONTINUE ACROSS
   THE REGION THIS EVENING. ONE STRETCHES FROM FAR ERN TX TO SERN
   LA...WHILE ANOTHER EXISTS AS A BROKEN LINE ALONG THE
   SEWD-PROGRESSING COLD FRONT. MERGING COLD POOLS AND THE ONSET OF BL
   DECOUPLING /AND SUBSEQUENT INCREASE IN MLCINH/ HAVE LIKELY RESULTED
   IN SEVERAL OF THE ERN CELLS BECOMING SLIGHTLY ELEVATED.
   FURTHERMORE...CAPPI DATA SUGGEST EARLIER VIGOROUS UPDRAFTS HAVE
   DIMINISHED IN INTENSITY. NONETHELESS...WITH THE APPROACHING FRONTAL
   BAND OF TSTMS...AS WELL AS AROUND 35-40 KT OF SHEAR IN THE
   CONVECTIVE LAYER...SOME THREAT FOR A COUPLE OF STRONG WIND GUSTS MAY
   CONTINUE PAST 03Z. AS SUCH...TRENDS WILL BE MONITORED TO ACCOUNT FOR
   A POSSIBLE LOCAL EXTENSION IN TIME.

   ..PICCA.. 04/10/2015


   ATTN...WFO...JAN...LZK...SHV...FWD...

   LAT...LON   31459424 31509500 32809552 33739422 34369241 34449131
               33999114 33449189 32489274 31459424 

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Page last modified: April 10, 2015
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