000
AXPZ20 KNHC 302213
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SUN NOV 30 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...07N78W TO 07N140W. 
NO SIGNIFICANT CONVECTION.

...DISCUSSION...
MID-UPPER LEVEL THROUGH 22N106W TO 32N132W BRINGS VERY DRY AIR 
MASS ALOFT N OF AXIS.  TROUGH W WINDS COMPLETELY FLATTEN CREST 
OF RIDGE CENTERED 06N112W WHICH COVERS REMAINDER OF BASIN E OF 
105.  MOISTURE ALOFT THINS JUST S OF WEAK JET CORE TAIL JUST S 
AND PARALLEL TO TROUGH AXIS.  LONG WAVE DEEP LAYER TROUGH ALONG 
98W KEEPS REMAINDER E PAC FAIRLY DRY AND FORCES MINOR TROPICAL 
MOISTURE INTRUSION ALONG ITCZ EASTWARD OVER CENTRAL AMERICA.

AT THE SURFACE...
BROAD WEAKENING HIGH PRES CENTER 1024 MB AT 30N135W HAS RIDGE 
EXTEND TO 14N107W SUPPORTING TRADE WINDS FROM 12N-23N W OF 125W. 
TRADES DIMINISH WITH RIDGE AS COLD FRONT APPROACHES FROM NW.  
LARGE LONG PERIOD NW SWELL SPREAD OVER ENTIRE BASIN W OF 108W.  

SIMILARLY STRONG NW WINDS OVER GULF OF CALIFORNIA DIMINISH OVER 
NEXT 24 HRS AS LOW PRES OVER SW CONUS MOVES E. 

$$
WALLY BARNES