SPC AC 200542
   
   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1142 PM CST SUN DEC 19 2004
   
   VALID 211200Z - 221200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM PSX 35 S FTW 20 SW
   ADM 30 W MLC 50 NE LIT 45 NNE MKL 20 WSW BWG 50 SSE BNA 20 WNW TCL
   50 SE MEI 10 SW PNS.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   LARGE / BROAD UPPER TROUGH OVER THE CONUS IS FORECAST TO AMPLIFY /
   DEEPEN THIS PERIOD AS A COUPLE OF SHORT-WAVE TROUGHS DIG
   CYCLONICALLY SEWD ACROSS THE ROCKIES TOWARD THE SRN PLAINS.
   
   AS THESE SHORT-WAVE TROUGHS APPROACH...SURFACE BAROCLINIC ZONE
   EXTENDING FROM THE GREAT LAKES REGION INTO THE SRN PLAINS SHOULD 
   STRENGTHEN.  SRN PORTION OF THIS BOUNDARY IS FORECAST TO PERSIST
   FROM NERN TX ENEWD INTO THE TN VALLEY THROUGH THE LATTER HALF OF THE
   PERIOD...AND WILL LIKELY FOCUS SCATTERED TO WIDESPREAD SHOWER /
   THUNDERSTORM DEVELOPMENT THROUGH THE PERIOD.
   
   DEEP-LAYER WIND FIELD IS FORECAST TO INTENSIFY ACROSS THE SRN PLAINS
   / LOWER MS VALLEY REGION AS UPPER SHORT-WAVE TROUGH APPROACHES. 
   THOUGH SUFFICIENT SHEAR FOR ORGANIZED / SEVERE STORMS WILL LIKELY
   EVOLVE THROUGH THE PERIOD...INSTABILITY IS FORECAST TO BE LIMITED --
   PARTICULARLY AWAY FROM THE GULF COAST INVOF SURFACE BOUNDARY. 
   THOUGH A LIMITED SEVERE THREAT MAY EVOLVE ACROSS THE ARKLATEX REGION
   DURING THE AFTERNOON / EVENING...QUESTIONS REGARDING AVAILABLE
   INSTABILITY PRECLUDE THE INTRODUCTION OF SEVERE PROBABILITIES ATTM.
   
   ..GOSS.. 12/20/2004
   
   ...NOTICE...
   FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND
   LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK
   GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO
   HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3.  THE
   INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED.
   
   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z