SPC AC 200819
   
   DAY 2 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0219 AM CST TUE JAN 20 2004
   
   VALID 211200Z - 221200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM 10 W YUM 30 SE EED 20
   SW GCN 80 NW GUP 45 ESE DRO 45 WSW RTN 35 ENE 4CR 40 E ALM ELP.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...SYNOPSIS...
   A MID LEVEL SHORTWAVE TROUGH NOW OVER NRN CA WILL DIG SWD AND EVOLVE
   INTO A CLOSED LOW OVER THE LOWER CO RIVER VALLEY LATE TONIGHT INTO
   TOMORROW...AND THEN BEGIN TO MOVE MORE TO THE E OVER SRN AZ/NW
   MEXICO BY TOMORROW NIGHT.  COLD MID LEVEL TEMPERATURES /-24 TO -26 C
   AT 500 MB/ WILL ACCOMPANY THIS LOW...ALONG WITH LOW-MID LEVEL LAPSE
   RATES NEAR 8 C/KM.  THOUGH LOW-MID LEVEL MOISTURE WILL REMAIN
   MARGINAL WITH THIS SYSTEM...THE COMBINATION OF STEEP MID LEVEL LAPSE
   RATES AND DAYTIME HEATING WILL CONTRIBUTE TO WEAK INSTABILITY OVER
   AZ/WRN NM.  ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL BE
   POSSIBLE ACROSS THESE AREAS...PRIMARILY DURING THE AFTERNOON AND
   EVENING OVER THE MOGOLLON RIM.
   
   ELSEWHERE...A CONTINENTAL POLAR AIR MASS AND STABLE THERMODYNAMIC
   PROFILES WILL REMAIN ACROSS THE ERN STATES...WHILE A REINFORCING
   SURGE OF ARCTIC AIR SURGES SEWD ACROSS THE UPPER MS VALLEY AND GREAT
   LAKES IN ASSOCIATION WITH A STRONG NRN STREAM SHORTWAVE TROUGH.
   
   ..THOMPSON.. 01/20/2004
   
   ...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 FOR 1730Z