000
AXPZ20 KNHC 091543
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1503 UTC Sat May 9 2020

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 1200 UTC surface analysis and satellite imagery through
1500 UTC.

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

A surface trough extends from Panama near 08N78W to 07N122W. The
ITCZ extends from there to 06N140W. Scattered moderate isolated 
strong convection is noted north of 05N east of 90W, from 03N to
11N between 94W and 114W, and from 05N to 07W west of 138W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A weak ridge of high pressure extends from 30N128W through the
Revillagigedo Islands to 14N96W. As a result, winds this morning
off of Mexico and in the Gulf of California were only moderate
breeze or weaker. High pressure building over the Gulf of Mexico
will promote strong N gap winds across the Tehuantepec region 
late tonight and continue through Mon night. Peak seas should 
reach 10-12 ft due to N wind waves and SW swell. Elsewhere 
tranquil conditions are expected across the area through at least
Wed night. 

Long period SW swell will impact the waters through Monday. An
altimeter pass showed peak seas of 8 to 9 ft south of Mexico 
late last night.

Haze and areas of smoke from agricultural fires in Mexico may 
reduce visibilities near the coast from the Tehuantepec region to
near Cabo Corrientes. 

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

A flat pressure gradient over the waters is forcing winds of 
only fresh breeze or weaker. Winds will remain tranquil during 
the next several days. 

Large, long period SW swell will continue to impact the offshore
waters of Central America, Ecuador and Colombia through the 
weekend before gradually fading. Peak seas observed by an
altimeter pass last night were around 10 ft between the Galapagos
and Ecuador.

Haze and areas of smoke may reduce visibilities near the coasts 
of Costa Rica, El Salvador and Guatemala during the next few 
days.

REMAINDER OF THE AREA...

A weak ridge of high pressure extends from 30N128W through the
Revillagigedo Islands to 14N96W. The relatively flat pressure
gradient from the ridge to the ITCZ is causing NE trades of
generally moderate breeze or weaker this morning. Peak seas are 8
to 10 ft east of 120W and south of 15N, primarily due to long- 
period SW swell.

A weak cold front will reach our NW corner of 30N140W Sun morning
and progress to 30N132W to 24N140W Mon morning, before
dissipating by Tue morning. SW winds ahead and NW winds behind 
the front should remain fresh breeze or weaker. A NW swell of 8 
to 10 ft will impact the waters north of 25N west of 130W Sun 
night through Tue morning. Elsewhere winds should remain tranquil
through at least Wed night. 

Large, long period SW swell will continue to impact the high seas
waters south of 15N and east of 125W through the weekend before 
gradually fading. Peak seas observed by an altimeter pass last 
night were around 10 ft well west of the Galapagos.

$$
Landsea