000
AXPZ20 KNHC 090314
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
115 UTC Mon Apr 9 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 0000 UTC surface analysis and satellite imagery through
0300 UTC.

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

A surface trough extends from 08N79W to 04N93W. The ITCZ 
continues from 04N93W to 09N112W to 07N123W to beyond 07N140W. 
Scattered moderate convection is noted within 210 nm north of 
the ITCZ between 111W and 136W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Fresh to strong winds off Baja California Norte will diminish 
overnight. NW swell in excess of 8 ft will prevail off Baja 
California through Mon night. Looking ahead, another round of 
strong NW winds and large NW swell will follow another front 
moving into the region starting mid week. 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 keep seas in the 4-6 ft range through Mon 
before subsiding to 3-5 ft. Fresh gap winds are possible in the 
Gulf of Papagayo by mid week. 

REMAINDER OF THE AREA... 

The pressure gradient between lower pressure in the vicinity of
the ITCZ and high pressure of 1025 mb centered north of the area
near 37N128W is maintaining mainly light to gentle winds north 
of 15N, with moderate to occasionally fresh trades farther south.
The area of 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 large 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.

$$
AL