SPC AC 191721
   
   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1121 AM CST FRI DEC 19 2003
   
   VALID 201200Z - 211200Z.
   
   ...NO TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   ATLANTIC COASTAL UPPER-TROUGH WILL SLIDE EWD OFFSHORE ON DAY 2.
   ANOTHER UPPER-TROUGH WILL MOVE ONSHORE INTO CA LATE IN THE PERIOD.
   
   LARGE-SCALE ASCENT WILL INCREASE ACROSS THE SWRN STATES AHEAD OF THE
   APPROACHING UPPER-TROUGH. THIS WILL RESULT IN AN AREA OF RAIN AND
   SNOW ACROSS THE CALIFORNIA VALLEYS...SIERRA NEVADA AND GREAT BASIN.
   HOWEVER...INSTABILITY IS FORECAST TO BE VERY WEAK WHICH SHOULD KEEP
   ANY THUNDERSTORM ACTIVITY TOO ISOLATED TO WARRANT A 10 PERCENT
   CONTOUR.
   
   ..BROYLES.. 12/19/2003
   
   ...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 FOR 0800Z