000
AXPZ20 KNHC 100317
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC TUE APR 10 2012

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ AXIS EXTENDS FROM 06N108W TO 05N140W. SCATTERED MODERATE 
CONVECTION WITHIN 30 NM OF AXIS BETWEEN 118W AND 122W...AND 
WITHIN 60 NM OF AXIS W OF 133W.

DISCUSSION...
COLD FRONT EXTENDS FROM 32N126W TO 20N136W. THE FRONT WILL MOVE 
SLOWLY E...REACHING FROM 32N121W TO 21N131W TUE AFTERNOON...THEN 
DISSIPATE W OF BAJA CALIFORNIA WED. BROAD LOW PRES SURFACE TROUGH
WILL DEVELOP BETWEEN 120W AND 130W BY TUE NIGHT...ALLOWING LARGE 
AREA OF W TO NW WINDS TO PREVAIL N OF A NARROW RIDGE EXTENDING 
FROM 25N140W TO 20N110W. TWO AREAS OF FRESH WINDS WILL DEVELOP AS
THIS SYNOPTIC PATTERN EVOLVES. THE FIRST WILL BE N OF THE ITCZ W 
OF 125W FROM ENHANCED NE TRADES AS THE RIDGE INTENSIFIES FURTHER 
SOUTH...AND THE SECOND WILL BE N OF 25N W OF THE BROAD TROUGH AS 
A REINFORCING SURGE OF COOL AIR...ASSOCIATED WITH A SHORT WAVE 
TROUGH...TIGHTENS THE PRES GRADIENT N OF THE RIDGE AXIS.

HIGH PRES ALONG THE GULF COAST OF MEXICO AND A TROUGH OVER THE 
YUCATAN PENINSULA IS ENHANCING NE FLOW IN THE SW GULF OF MEXICO 
WHICH IS FUNNELING THROUGH THE CHIVELA PASS AS FRESH TO STRONG N 
TO NE WINDS IN THE GULF OF TEHUANTEPEC. WINDS AND SEAS DIMINISH 
BY TUE EVENING.

CROSS EQUATORIAL SW SWELL TO 8 FT S OF 10N W OF 114W WILL 
GRADUALLY DECREASE IN HEIGHT AND COVERAGE THROUGH TUE NIGHT.

$$
MUNDELL