000
AXPZ20 KNHC 302204
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC THU DEC 30 2010

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...

ITCZ AXIS FROM 05N78W TO 05N90W TO 09N117W 08N130W 08N140W. 
SCATTERED MODERATE FROM 07N TO 10N BETWEEN 107W AND 107W. 1008 
MB LOW IS EMBEDDED ON THE ITCZ NEAR 06N78W. SCATTERED MODERATE 
FROM 04N TO 07N BETWEEN 78W AND 82W. SURFACE TROUGH IS ALSO 
EMBEDDED ON THE ITCZ FROM 12N116W TO 06N120W. SCATTERED MODERATE 
ISOLATED STRONG FROM 06N TO 11N BETWEEN 110W AND 122W. 

...DISCUSSION...

A 1026 MB HIGH IS CENTERED NEAR 34N134W. A DISSIPATING COLD 
FRONT EXTENDS FROM N MEXICO NEAR 30N110W TO W OF BAJA CALIFORNIA 
AT 23N116W. A SHORTWAVE UPPER LEVEL TROUGH IS EVIDENT ON WATER 
VAPOR IMAGERY WITH TROUGH AXIS EXTENDING FROM ARIZONA THROUGH 
THE NORTHERN GULF OF CALIFORNIA NEAR 30N110W TO 20N120W THAT 
SUPPORTS THE DISSIPATING COLD FRONT. ASCAT PASSES CAPTURED AN 
AREA OF 20 TO 25 KT WINDS MAINLY N OF 26N E OF 127W. AS THIS 
WIND FIELD HAS ENTERED THE DISCUSSION AREA...SEAS IS EXPECTED TO 
CONTINUE BUILDING IN WAKE OF THE FRONT TO 15 FT BY 31/1200 UTC 
AND BEGIN SUBSIDING THEREAFTER AS THE WIND FIELD GRADUALLY 
DIMINISHES AS STRONG HIGH PRESSURE LOCATED OFF TO THE NW OF THE 
REGION BUILDS IN BY LATE FRIDAY. THE NORTHERN GULF OF CALIFORNIA 
REGION N OF 28N HAS...SW TO W WINDS AND SEAS LESS THAN 8 FT.
  
GAP WINDS...
N TO NE WINDS THROUGH THE GULF OF PAPAGAYO ARE EXPECTED TO START 
EARLY FRIDAY DUE TO STRONGER TRADES OVER THE WESTERN CARIBBEAN 
AND MORNING MOUNTAIN DRAINAGE. THESE GAP WINDS ARE EXPECTED TO 
PERSIST FOR THE NEXT 48 HOURS. 

$$
FORMOSA