000
AXPZ20 KNHC 101629
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC MON DEC 10 2007

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

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1445 UTC.
 
...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS ALONG 7N78W  8N103W  6N120W  
8N136W  8N140W.  SCATTERED MODERATE ISOLATED STRONG WITHIN 180 
NM N OF AXIS FROM 96W TO 104W. 

...DISCUSSION...
DEEP LAYER CYCLONIC VORTEX CONTINUES ITS SPIN AT 30N115W AS 135 
KT JET CORE ROUNDS ITS BASE IN MOVES ON LEE SIDE.  JTST ADVECTS 
PLENTY OF TRPCL MOISTURE INTO CENTRAL MEXICO...TEXAS AND NW GULF 
OF MEXICO.  SOME LEFTOVER HUMIDITY ALSO NOTED ALONG ITCZ FROM 
96W-104W.  LARGE AMPLITUDE NARROW RIDGE UPSTREAM FROM TROUGH 
ALONG 136W BRINGS LARGE AMOUNTS OF MOISTURE COVERING N OF 10N W 
OF 132W.  STILL REMAINS QUITE DRY S OF 10N.  

DOWNSTREAM FROM TROUGH...CARIBBEAN RIDGE STILL HOLDS ON IN 
POSITION OVER CENTRAL AMERICA AND EXTREME E PAC BLOCKING ANY 
FURTHER SE INCURSION OF MENTIONED CYCLONIC VORTEX.  

AT THE SURFACE...HIGH PRES CENTER 1029 MB AT 38N135W HAS RIDGE 
EXTEND SE TO 17N115W.  WEAK TROUGH HANGS FROM LOW PRES 1010 MB 
AT 28N116W.  STRONG N-NW WINDS WITHIN 180 NM W OF LOW PRES 
SHOULD DIMINISH AS LOW MOVES NE INLAND.  LARGE LONG PERIOD 
SWELLS MOVE AS FAR S AS 10N W OF 110W AND TRADES KEEP THEIR HOLD 
FROM 10N-20N W OF 130W.  CROSS EQUATORIAL SWELL MOVE IN FROM THE 
S WITHIN 24 HRS THROUGH END OF PERIOD. 

GULF OF PAPAGAYO GAP WINDS SHOULD CONTINUE BEYOND THE FORECAST 
PERIOD AS DISTURBANCE AFFECTING CARIBBEAN BASIN INCREASES WINDS 
IN NWRN CARIBBEAN.

$$
WALLY BARNES