000
AXPZ20 KNHC 252203
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC MON JAN 25 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 
2145 UTC.

...ITCZ...
AXIS ALONG 05N77W TO 02N87W TO 05N105W TO 02N129W TO 03N140W.  
SCATTERED MODERATE WITHIN 90 NM OF AXIS E OF 84W.

...DISCUSSION...
LARGE AMPLITUDE UPPER LEVEL TROUGH DIG S FROM 32N131W TO 12N140W 
WITH 135 KT JET CORE SLIDING SE ROUNDING ITS BASE AT JUST 30N.  
BROAD DOWNSTREAM RIDGE CREST ADVECTING LARGE AMOUNTS OF MOISTURE 
INTO NRN HALF OF CALIFORNIA AND OREGON WHILE BOTTOM PART OF 
RIDGE REMAINS DRY S OF 24N DUE TO MODERATE TO STRONG SUBSIDING 
AIR ACROSS MOST OF E PAC BASIN...EXCEPT AS MENTIONED BELOW.

TROPICAL MOISTURE...CONVECTION DEBRIS FROM ITCZ...S OF 07N E OF 
88W RIDES NE INTO PANAMA AND COLOMBIA ALONG RIDGE CENTERED OVER 
SOUTH AMERICA.
  
ELSEWHERE AT THE SURFACE...
COLD FRONT EXTEND FROM 32N132W TO 26N140W.  HIGH PRES AT 27N124W 
WITH RIDGE SW TO 25N135W BLOCKING SE PROGRESSION OF APPROACHING 
FRONT.  FRESH NE TRADES CONTINUE AROUND S AND SW PERIPHERY OF 
RIDGE W OF 120W WITH NW SWELLS PROPAGATING SE ACROSS E PAC 
WATERS W OF 95W.

FRESH NW BREEZE IN GULF OF CALIFORNIA DIMINISH TONIGHT. 

GAP WINDS...
FRESH N WIND EXPECTED TO BEGIN CROSSING INTO GULF OF TEHUANTEPEC 
EARLY TONIGHT INCREASING TO GALE FORCE LATE TONIGHT OR EARLY TUE 
THEN CONTINUE THROUGH FORECAST PERIOD.  FRESH E-NE TRADES ACROSS 
WRN CARIBBEAN EXPECTED TO FILTER INTO E PAC ACROSS GULF OF 
PAPAGAYO EARLY TUE THEN SPREAD ACROSS GULF OF FONSECA. 
EVENTUALLY...GULF OF PANAMA GETS ITS SHARE OF STRONG N WINDS 
SEEPING INTO E PAC WITHIN 24 HRS AND CONTINUE INTO WED. 

FOR ADDITIONAL INFORMATION PLEASE VISIT 
HTTP://WWW.HURRICANES.GOV/MARINE

$$
WALLY BARNES