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Mesoscale Discussion 924
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   MESOSCALE DISCUSSION 0924
   NWS STORM PREDICTION CENTER NORMAN OK
   0322 PM CDT MON JUN 09 2014

   AREAS AFFECTED...CENTRAL/NORTHEAST LA AND SOUTHEAST AR TO CENTRAL MS

   CONCERNING...SEVERE THUNDERSTORM WATCH 267...

   VALID 092022Z - 092145Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 267
   CONTINUES.

   SUMMARY...DAMAGING WINDS REMAIN POSSIBLE ACROSS CENTRAL/NORTHEAST LA
   INTO SOUTHEAST AR/CENTRAL MS IN AND NEAR SEVERE THUNDERSTORM WATCH
   267 WHICH CONTINUES UNTIL 00Z.

   DISCUSSION...IN ASSOCIATION WITH THE EASTWARD MOVING SQUALL
   LINE...REGIONAL RADAR IMAGERY REFLECTS A TREND TOWARD DEEPER/STRONG
   UPDRAFTS PARTICULARLY ACROSS FAR NORTHEAST LA AND TO A LESSER EXTENT
   FARTHER NORTH ALONG THE AR/MS BORDER VICINITY AS OF 2010Z. ALTHOUGH
   THE EARLY DAY WEST-EAST OUTFLOW BOUNDARY HAS LARGELY DECAYED...IT
   MAY REMAIN A SUBTLE INFLUENCE AND PREFERENTIAL FOCUS FOR GREATER
   ORGANIZATION/INTENSITY FROM FAR NORTHEAST LA INTO CENTRAL MS WHERE
   2MB/2-HR SURFACE PRESSURE FALLS ARE SEMI-FOCUSED. THE AIR MASS AHEAD
   OF THE SQUALL LINE IS MODERATELY UNSTABLE WITH MLCAPE GENERALLY
   ESTIMATED TO BE AROUND 2000 J/KG...WHILE DEEP-LAYER WINDS HAVE
   TENDED TO STRENGTHEN NOT ONLY IN THE WAKE OF THE SQUALL LINE
   BUT...TO A LESSER EXTENT...EVEN ACROSS THE WARM SECTOR AS PER
   AVAILABLE /0-4 KM/ WSR-88D VWP DATA FROM THE JACKSON MS AREA. IN
   ALL...SCENARIO WILL REMAIN FAVORABLE FOR PRIMARILY DAMAGING WINDS
   ACROSS NORTHEAST/EAST-CENTRAL MS AND EXTREME EASTERN AR INTO MS
   THROUGH LATE AFTERNOON IN ASSOCIATION WITH A RELATIVELY
   WELL-ORGANIZED SQUALL LINE. THAT SAID...SOME SEVERE HAIL/PERHAPS A
   BRIEF TORNADO MAY BE POSSIBLE IN ASSOCIATION WITH STORMS PRECEDING
   THE SQUALL LINE.

   ..GUYER.. 06/09/2014


   ATTN...WFO...MEG...JAN...LIX...LZK...LCH...SHV...

   LAT...LON   31279240 32769165 33979099 33538902 30989131 31279240 

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Page last modified: June 09, 2014
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