000
AXPZ20 KNHC 120913
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
637 UTC Thu Apr 12 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 0600 UTC surface analysis and satellite imagery through
0900 UTC.

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

A surface trough extends from 09N83W to 06N91W. The ITCZ 
continues from 06N91W to 05N97W to 08N115W to 06.5N125W to 
06N140W. Scattered moderate isolated strong convection was noted 
within 60 nm north of the ITCZ between 91W and 99W. Scattered 
moderate isolated strong convection was noted from 05N to 10N 
between 115W and 122W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Fresh to strong winds are expected in the Gulf of Tehuantepec 
today. Strong NW winds and large NW swell will move into the 
waters off Baja California Norte today. 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 Sun and 
Mon. 

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 to 4 ft range will continue, 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 Thu through Fri.

REMAINDER OF THE AREA... 

The pressure gradient between lower pressure in the vicinity of 
the ITCZ and high pressure over the northern waters is producing 
gentle to moderate winds north of the ITCZ and west of 120W. High
pressure will build today, bringing an increase in trades 
through Sat. NW swell is propagating across the forecast waters, 
with seas greater than 8 ft currently west of a line from 30N119W
to 10N140W. The swell will continue to propagate SE, with seas 
greater than 8 ft covering the waters west of 110W by Sunday 
night. 

$$
AL