MESOSCALE DISCUSSION 1035
   NWS STORM PREDICTION CENTER NORMAN OK
   0839 PM CDT WED JUN 10 2009
   
   AREAS AFFECTED...CENTRAL/NORTHEAST TX AND FAR SOUTHEAST OK INTO MUCH
   OF AR/NORTHWEST LA
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 365...366...368...
   
   VALID 110139Z - 110245Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   365...366...368...CONTINUES.
   
   SEVERE TSTM WATCHES 365/368 CONTINUE UNTIL 03Z/07Z. SEVERE TSTM
   WATCH 366 WILL LIKELY BE ALLOWED TO EXPIRE AND/OR BE CANCELLED BY
   03Z EXPIRATION.
   
   ACROSS NORTHERN AR...PRONOUNCED ASYMMETRIC SQUALL LINE WITH NORTH
   PERIPHERY EMBEDDED BOW ECHO CONTINUES TO RACE NORTHEASTWARD AT
   AROUND 50 KT ACROSS NORTHWEST INTO NORTH CENTRAL AR EARLY THIS
   EVENING. THIS MCS/BOW MAY GRADUALLY ENCOUNTER A SLIGHTLY LESS
   FAVORABLE ENVIRONMENT ACROSS NORTH CENTRAL INTO NORTHEAST
   AR...HOWEVER THE WELL-ORGANIZED/FAST MOVING NATURE OF THE SYSTEM
   WILL CONTINUE TO FAVOR A DAMAGING WIND/PERHAPS SOME HAIL THREAT OVER
   THE NEXT FEW HOURS. RECENT FORT SMITH WSR-88D DERIVED VWP WINDS
   SAMPLE A 50 KT REAR INFLOW JET AROUND 1-2 KM IN THE IMMEDIATE WAKE
   OF THIS QUASI-LINEAR MCS.
   
   FARTHER SOUTHWEST...A MORE EXTENSIVE WELL-ORGANIZED SQUALL LINE WITH
   HISTORY OF WIND DAMAGE IN THE DFW METRO AREA WILL CONTINUE TO
   STEADILY PROGRESS TOWARD THE ARKLATEX VICINITY OVER THE NEXT 1-2
   HOURS. OWING TO THE WELL-ORGANIZED NATURE OF THIS MCS AND EXISTING
   STRONG COLD POOL/RISE-FALL PRESSURE COUPLET...SURFACE DATA TRENDS
   AHEAD OF THE MCS REFLECT A SUSTENANCE-FAVORABLE TREND OF AN
   INCREASINGLY EASTERLY COMPONENT IN THE BOUNDARY LAYER. THESE
   ORGANIZATIONAL TRENDS AND A DOWNSTREAM MODERATELY UNSTABLE BOUNDARY
   LAYER WILL CONTINUE TO SUPPORT A DISTINCT DAMAGING WIND/SOME HAIL
   THREAT TOWARD THE ARKLATEX REGION. ANOTHER MORE ISOLATED SEVERE
   TSTM/SUPERCELL WILL CONTINUE TO POSE A THREAT SOUTHEASTWARD ACROSS
   CENTRAL TX...POSSIBLY REACHING THE I-35 CORRIDOR/TEMPLE VICINITY
   THROUGH MID EVENING.
   
   ..GUYER.. 06/11/2009
   
   
   ATTN...WFO...MEG...LZK...SHV...TSA...FWD...OUN...SJT...
   
   LAT...LON   36339347 36349151 35819114 34429223 32339442 31309899
               32779768 34619465 36339347