MESOSCALE DISCUSSION 2325
   NWS STORM PREDICTION CENTER NORMAN OK
   1141 PM CST FRI DEC 29 2006
   
   AREAS AFFECTED...EAST TX AND WRN/SRN LA
   
   CONCERNING...TORNADO WATCH 888...889...
   
   VALID 300541Z - 300715Z
   
   ISOLATED SEVERE STORMS REMAIN POSSIBLE INTO THE OVERNIGHT PERIOD
   ACROSS EAST TX AND MUCH OF WRN/SRN LA.
   
   LATE EVENING SURFACE ANALYSIS INDICATED AN OCCLUDED LOW LOCATED OVER
   EXTREME SWRN OK WITH AN OCCLUDED FRONT EXTENDING SEWD TO AN AREA OF
   LOW PRESSURE NEAR 20 E TYR.  COLD FRONT EXTENDED SSWWD FROM THIS
   SECOND LOW TO NEAR UTS AND THEN ABOUT 30 MILES OFFSHORE OF THE
   MIDDLE TX COAST.  SMALL AND MARGINALLY UNSTABLE WARM SECTOR EXISTED
   OVER SE TX INTO SW LA...WHERE OBJECTIVE ANALYSES AND 03Z RUC
   FORECAST SOUNDINGS SUGGESTED EFFECTIVE INFLOW LAYER IS LIKELY
   LOCATED AT OR...AT LEAST...NEAR THE SURFACE.  THUS...STRONG LOW
   LEVEL DIRECTIONAL AND SPEED SHEAR /0-1 KM SHEAR GREATER THAN 30 KT
   AND EFFECTIVE SRH VALUES OF 400-800 M2/S2/ PER OBJECTIVE ANALYSES
   AND AREA VADS/ SUPPORT A CONTINUED TORNADO THREAT ACROSS VALID PARTS
   OF WW/S 888 AND 889.
   
   ..PETERS.. 12/30/2006
   
   
   ATTN...WFO...JAN...LIX...LCH...SHV...HGX...
   
   28319581 29779533 31409501 32409497 32699466 32729410
   33039395 33009325 32529275 32249182 31269182 30199157
   29759108 28819130 29119254 29239376