000
AXPZ20 KNHC 130833
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
725 UTC Wed May 13 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 0600 UTC surface analysis and satellite imagery through
0830 UTC.

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

The monsoon trough extends from 08N78W to 10N87W to 08N99W to 
1011 mb low pressure near 08N116W to 07N130W. The ITCZ continues
from 07N130W to 06N140W. Scattered moderate and isolated strong 
convection is noted from 02N to 08N between 89W and 101W, and 
from 05N to 10N between 110W and 130W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Haze and areas of smoke from agricultural fires in Mexico may 
reduce visibilities near the coast from the Tehuantepec region to
near Cabo Corrientes, and across the area between Las Marias and
Revillagigedo Islands. 

A cold front has moved into the northern waters off the coast of
Baja California Norte, with a surface ridge south of the front
west of Baja California and SW Mexico. Gentle to moderate winds 
prevail over the waters W of the Baja California peninsula. 
Light to gentle winds prevail elsewhere. Seas are in the 5-7 ft 
range W of Baja California Norte, and 4-6 ft seas prevail 
elsewhere over the open waters off Mexico. Seas are in the 1-2 
ft over the Gulf of California. 

A building ridge across the northern forecast waters
will strengthen winds mainly N of Cabo San Lazaro tonight 
through Fri night. Seas of 8-9 ft in NW swell will reach the 
waters N of Punta Eugenia by late Thu, and propagate SE between 
Punta Eugenia and Cabo San Lazaro through Fri night, subsiding to
less than 8 ft by late Sat. Winds and seas will diminish and 
subside Sun and Sun night.

Mainly light to moderate southerly flow and seas of 3 ft or less
will prevail inside the Gulf of California, with the exception 
of the northern part of the Gulf where a dissipating cold front 
moving across the area could briefly freshen winds.

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

Haze and areas of smoke from agricultural fires in Central 
America may reduce visibilities near the coast from Costa Rica 
to Guatemala.

Gentle to moderate winds prevail S of the monsoon trough, with 
light to gentle winds N of the monsoon trough. Seas are in the 
4-6 ft range. Winds will freshen today over the Gulf of 
Papagayo. Gentle to moderate winds will continue S of the monsoon
trough through Thu before diminishing. Light to gentle winds will
then prevail through Sat. Seas will be mainly 4-6 ft primarily 
in long period SW swell. A new set of long period SW swell, with 
a leading edge period of 19 to 21 seconds, will reach the waters 
between Ecuador and the Galapagos Islands by Thu night into early
Fri, and the Pacific coast of Central America by late Fri. Seas 
will build to 8 ft SW of the Galapagos Islands Fri and Fri night,
subsiding on Sat and Sat night.

REMAINDER OF THE AREA...

N of 20N, a weakening cold front extends from 30N119W to 
24N130W. Gentle to moderate winds prevail. Seas are in the 5-7 
ft. S of 20N, weak ridging combined with lower pressure in the 
vicinity of the ITCZ and within the monsoon trough are supporting
moderate to fresh trades along with 5-8 ft seas. Little change 
in the trade wind flow is expected through the week. The next 
front will approach 30N140W from the NW on Fri night, moving 
across the NW waters this weekend with another set of NW swell
bringing seas of 8-10 ft behind it.

A set of cross equatorial long period SW swell will propagate 
across the S waters between Ecuador and 120W today. Seas will 
build to 9-10 ft S of the equator, and to 8-9 ft S of 10N and W 
of the Galapagos to about 120W through Fri night before decaying
Sat and Sat night.

$$
AL