SPC MESOSCALE DISCUSSION 1384 FOR UPPER TX COASTAL PLAIN
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL...
   
   VALID 161651Z - 162000Z
   
   ISOLATED DAMAGING WIND GUSTS AND PERHAPS A BRIEF TORNADO WILL
   ACCOMPANY CONVECTIVE LINE MOVING 205/25-30KT TOWARD HOU AND GLS
   AREA. CONVECTIVE LINE IS EXPECTED TO MAINTAIN NELY TRACK REACHING
   LIBERTY...JEFFERSON...AND HARDIN COUNTIES BETWEEN 16/18-19Z.
   
   MARITIME TROPICAL AIRMASS IS IN PLACE ACROSS THE TX COAST WITH
   PRECIPITABLE WATER VALUES IN EXCESS OF 2.00" AND SFC DEWPOINT
   VALUES GENERALLY IN THE MID 70S. CONVECTIVE LINE APPROACHING
   HOU/GLS IS ASSOCIATED WITH A LARGER-SCALE SFC CONVERGENCE AXIS
   EVIDENT ON 16Z SURFACE ANALYSIS. VAD WIND PROFILE FROM HOUSTON
   INDICATES 30KT SSWLY FLOW AT 1KM WHICH IS RESULTING IN MODERATELY
   FAST MOTION OF CONVECTIVE STORMS. SFC-1KM SHEAR ON THE ORDER OF
   20KT WITH SFC-2KM SRH AROUND 100 M2/S2 AND VERY LOW LCL HEIGHTS
   SUGGEST AN ISOLATED/BRIEF TORNADO IS POSSIBLE IN ADDITION TO
   DAMAGING WINDS AS STORMS PROPAGATE NEWD THROUGH MID-AFTERNOON. 
   
   ..BANACOS.. 07/16/02