000
AXPZ20 KNHC 012212
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON DEC 01 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN
FROM THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE ALONG 07N80W  08N90W  07N140W.  
SCATTERED MODERATE CONVECTION WITHIN 90 NM N OF AXIS W OF 134W.

...DISCUSSION...
BROAD UPPER LEVEL RIDGE COVERS WRN PORTION OF BASIN W OF 120W 
ADVECTING MOISTURE INTO BASIN N OF 08N WITH ITCZ USING IT FOR 
SCATTERED DEEP CONVECTION W OF 134W.  LARGE AMPLITUDE UPPER 
LEVEL TROUGH COVER REMAINDER E PAC WITH MODERATE TO STRONG 
SUBSIDENCE AND VERY DRY AIR MASS LIMITING CLOUD VERTICAL 
DEVELOPMENT THROUGHOUT.

AT THE SURFACE...
HIGH PRES CENTER AT 30N135W HAS RIDGE EXTEND SE TO 13N110W 
MAINTAINING STRONG TRADE WINDS FROM 10N-20N W OF 120W.  HIGH 
PRES CENTER OVER GULF OF MEXICO FORCES COLD AIR ACROSS ISTHMUS 
AND GULF OF TEHUANTEPEC STARTING TO BE FELT TONIGHT AND REACHING 
GALE FORCE TUE FOR SHORT PERIOD.  HIGH PRES OVER GULF OF MEXICO 
MOVES E QUICKLY AND GALE EVENT DIES BY TUE NIGHT...ALTHOUGH 
STRONG NORTHERLIES LINGER TILL WED.    

AS HIGH PRES ENTERS WRN CARIBBEAN...GULF OF PAPAGAYO START 
FEELING NE WINDS SPILLING ACROSS MOUNTAIN PASSES AND REACH SHORT 
OF GALE FORCE BY WED. 

$$
WALLY BARNES