000
AXPZ20 KNHC 161543
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Fri Apr 16 2021

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...

The monsoon trough extends from 09N83W to 08N100W to 05N116W.
Today marks the reintroduction of the monsoon trough to the
surface analysis, due to the persistent SW winds equatorward of
the trough line. The ITCZ continues from 05N116W to 06N127W, 
then continues west of a surface trough from 04N131W to 04N140W. 
A surface trough is analyzed within the ITCZ and extends from 
09N128W to 02N131W. A large area of scattered moderate to strong 
convection is from 04N to 09N east of 115W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A weak 1022 mb high centered 28N130W is contributing to moderate
to fresh NW winds west of Baja California through Sun morning 
before further diminishing through at least Tue night. No 
significant Gulf of Tehuantepec gap wind events are anticipated 
for the next several days. Likewise, no significant swell is 
expected over the Mexican offshores through at least Tue night.
Seas will generally remain 4 to 7 ft over the offshore waters 
and less than 3 ft over the Gulf of California.

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

Winds remain moderate or weaker across the Central American and 
equatorial waters for the next several days. Seas should
generally remain 5 to 7 ft.  An enhanced SW swell may enter the 
equatorial waters beginning on Tue, pushing the seas to 8 to 9 
ft. The reintroduction of the monsoon trough is responsible for 
the widespread shower activity and strong thunderstorms possible 
east of 95W through Sun. 

REMAINDER OF THE AREA...

A weak pressure gradient between the 1022 mb high near 28N130W
and lower pressures over the ITCZ/monsoon trough is contributing
toward light to moderate and locally fresh NE trades. Seas are
currently 5 to 7 ft across the High Seas waters. As the high 
builds on Sun through Tue, the NE trades will increase to fresh
to strong and and seas rise to 8 to 9 ft west of 130W. An enhanced
SW swell may enter the equatorial waters beginning on Tue, 
pushing the seas to 8 to 9 ft. At the same time an enhanced NW 
swell may enter the northernmost waters west of the Baja 
California waters, likewise boosting seas to 8 to 9 ft.

$$
Landsea