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Mesoscale Discussion 330
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   MESOSCALE DISCUSSION 0330
   NWS STORM PREDICTION CENTER NORMAN OK
   1133 PM CDT THU APR 16 2015

   AREAS AFFECTED...SOUTHEAST TX

   CONCERNING...TORNADO WATCH 65...

   VALID 170433Z - 170600Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 65 CONTINUES.

   SUMMARY...SEVERE WEATHER THREAT REMAINS A CONCERN ACROSS PRIMARILY
   THE WESTERN AND SOUTHERN /COASTAL/ PORTIONS OF WW 65.  ALTHOUGH THE
   OVERALL COVERAGE OF STRONGER/SUSTAINED UPDRAFTS HAS DECREASED...ALL
   SEVERE HAZARDS REMAIN POSSIBLE WITH REMAINING STORMS.

   DISCUSSION...AT 04Z...SURFACE ANALYSIS INDICATED A BOUNDARY
   EXTENDING FROM SOUTHEAST JEFFERSON COUNTY THROUGH CENTRAL/NRN
   BRAZORIA TO NRN MATAGORDA COUNTIES.  SLY LOW-LEVEL WINDS INTO THIS
   REGION WILL MAINTAIN A WAA REGIME ACROSS PORTIONS OF THE MIDDLE AND
   UPPER TX COAST AND SOUTHEAST TX INTO THE OVERNIGHT.  THIS COMBINED
   WITH ASCENT WITHIN THE EXIT REGION OF THE WSWLY SUB-TROPICAL JET
   WILL FURTHER SUPPORT CONTINUED TSTM DEVELOPMENT.  ALTHOUGH MLCINH
   HAS INCREASED SOME IN VICINITY OF THE HOUSTON METRO...EFFECTIVE SRH
   OF 200-300 M2/S2 FROM THIS METRO AREA AND W/SWWD COMBINED WITH
   STRONG BULK SHEAR SUGGESTS ANY ADDITIONAL STORM DEVELOPMENT COULD
   POSE A THREAT FOR ALL SEVERE HAZARDS.

   ..PETERS.. 04/17/2015


   ATTN...WFO...LCH...HGX...CRP...EWX...

   LAT...LON   30309653 30399618 30219572 30039530 30129443 30049382
               29669381 29309463 28869533 28599591 28529613 28669633
               29069647 29239669 29699682 30129675 30309653 

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Page last modified: April 17, 2015
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