000
AXPZ20 KNHC 110302
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
142 UTC Wed Apr 11 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 09.5N84W to 05N102W to 09N115W. 
The ITCZ extends from 09N115W to 05N130W to 05N140W. Scattered 
moderate isolated strong convection is noted within 150 nm south
of the trough axis between 84W and 98W. Scattered moderate
isolated strong convection was noted from 09N to 11N between 
105W and 115W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Fresh to strong winds are expected in the Gulf of Tehuantepec 
late tonight through Thu. Strong NW winds and large NW swell will
move into the waters off Baja California Norte Thu. Strong winds
are possible across the length of the Gulf of California Fri 
night into Sat. Gale force winds are possible in the Gulf of 
Tehuantepec Sunday. 

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

Light to gentle winds are expected during the forecast period. 
Seas in the 3 to 4 ft range will prevail, except south of 05N 
where southerly swell will maintain seas of 3 to 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 1021 mb centered near 26N129W is 
producing mainly gentle to moderate trades north of the ITCZ to 
20N. High pressure will further build Thu, increasing trades over
this area. NW swell will propagate southeastward the next 
several days, with seas greater than 8 ft covering the waters 
north of a line from Baja California Norte to 08N140W by Thu. A 
second batch of NW swell will move into the northern waters Thu 
night into Fri, bringing seas to near 13 ft over the waters north
of 20N and west of 120W. Yet another NW swell will move into the
NW waters Sat, with seas possibly reaching to near 13 ft over 
the far NW waters.

$$
AL