ZCZC SPCSWODY1 ALL
ACUS01 KWNS 220020
SPC AC 220020

DAY 1 CONVECTIVE OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
0620 PM CST FRI NOV 21 2003

VALID 220100Z - 221200Z.

...NO TSTM AREAS FORECAST...

MID/UPPER SHORT WAVE TROUGH HAS PROGRESSED INLAND ACROSS THE NORTH
CENTRAL PACIFIC COAST DURING THE PAST 6 TO 12 HOURS.  MODELS SUGGEST
THIS FEATURE WILL CONTINUE TO AMPLIFY/DIG SOUTHEASTWARD INTO THE
SOUTH CENTRAL GREAT BASIN OVERNIGHT...AS DOWNSTREAM MID-LEVEL SHORT
WAVE TROUGH DEAMPLIFIES AND LIFTS FROM THE CENTRAL PLAINS INTO THE
UPPER MISSISSIPPI VALLEY.  WHILE LOWER/MID TROPOSPHERIC FLOW MAY
BACK SOME WITH TIME FROM THE SOUTHERN PLAINS INTO THE MIDDLE
MISSISSIPPI VALLEY...IT WILL GENERALLY REMAIN
SOUTHWESTERLY...MAINTAINING NORTHEASTWARD ADVECTION OF WARM ELEVATED
MIXED LAYER AIR OFF THE MEXICAN PLATEAU.  THUS...DESPITE CONTINUED
MOISTENING OVERNIGHT ON SOUTHERLY FLOW ABOVE DEVELOPING SURFACE
INVERSION...FROM EASTERN TEXAS AND LOUISIANA INTO MIDDLE MISSISSIPPI
VALLEY...CAPPING INVERSION IS EXPECTED TO PRECLUDE THUNDERSTORM
ACTIVITY.

..KERR.. 11/22/2003

...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.

$$