000
AXPZ20 KNHC 082120
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2120 UTC Sun Apr 8 2018

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 on 1800 UTC surface analysis and satellite imagery through
2130 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

A surface trough extends from 08N82W to 05N90W. The 
intertropical convergence zone continues from 05N100W to 10N130W
to beyond 07N140W. Scattered moderate convection is noted within
90 nm north and 60 nm south of the ITCZ between 115W and 130W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Fresh to strong winds are ongoing off the coast of Baja 
California Norte in the wake of a dissipating cold front 
reaching from the northern Gulf of California to the northern 
portion of Baja California Sur. Long period NW swell in excess 
of 8 ft will persist off Baja California through Mon night.
Looking ahead, another cold front will move into the area by mid
week, followed by another round of fresh to strong NW to N winds
and NW swell mainly off Baja California Norte through late week.
High pressure building over the Great Basin north of the area 
will bring fresh northerly winds into the northern Gulf of 
California. 

Farther south, fresh to strong winds are possible in the Gulf of
Tehuantepec by Wed as a cold front moves into southern Mexico.

OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND 
WITHIN 750 NM OF ECUADOR... 

Light to gentle winds are expected through the forecast period. 
Seas in the 2-4 ft range will prevail, except south of 05N where 
southerly swell will build seas to 4-6 ft today. Fresh gap winds 
are possible in the Gulf of Papagayo by mid week. 

REMAINDER OF THE AREA... 

1026 mb high pressure centered north of the area near 36N129W is
maintaining mainly light to gentle winds north of 15N, with 
moderate to occasionally fresh trades farther south. The high
pressure will shift northeast tonight ahead of a cold front
approaching the area from the west. The front will move into the
waters north of 25N Mon, accompanied by larger NW swell, with 
seas peaking 10 to 15 ft over the waters north of 25N and west of
130W waters Tue. NW swell of 8 to 11 ft will cover the region 
north of 15N and west of 130W through mid week, then propagate
eastward covering the region north of a line from Baja California
Norte to 08N140W by late this week with 8 to 12 ft swell.

$$
Christensen