180 
AXPZ20 KNHC 310333
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Tue Dec 31 2024

Tropical Weather Discussion for the eastern Pacific Ocean from
03.4S to 30N, east of 120W including the Gulf of California, and
from the Equator to 30N, between 120W and 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
0330 UTC.

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

The monsoon trough extends from the coast of Panama near 07N81W
to 05N103W. The ITCZ extends from 05N103W to 08N120W to beyond
06N140W. Scattered moderate to isolated strong convection is
noted from 05N to 13N between 81W and 105W. Scattered moderate
convection is noted from 06N to 10N between 118W and 140W. 

...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A ridge extends from 1028 mb high pressure centered NW of the
region near 39N131W to near the Revillagigedo Islands. The 
pressure gradient between the ridge and a trough over western 
Mexico is supporting moderate to fresh winds off Baja California 
Norte. Gentle to moderate winds are in the Gulf of Tehuantepec. 
Light to gentle winds prevail elsewhere. NW swell is bringing 
seas of 8-10 ft over the open waters west of 103W. Seas of 4-6 
ft prevail elsewhere over the open waters, and 1-3 ft over the 
Gulf of California. 

For the forecast, seas across the Baja California offshore 
waters will slowly decrease through midweek, subsiding below 8 ft
by Wed evening. Looking ahead, gale conditions and rough seas 
are possible for the Tehuantepec region Fri through Sat.

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

Light to gentle winds prevail across the Central and South
American offshore waters. Seas are in the 3-5 ft, except to 6 ft
SW of the Galapagos Islands. Scattered thunderstorms are noted 
across the Central American offshore waters. 

For the forecast, fresh NE to E winds will pulse in the Gulf of
Papagayo Tue through the weekend, with strong winds possible Fri
into Sat. Moderate to locally fresh NE winds will extend 
downwind the Papagayo region midweek, impacting areas well 
offshore of Guatemala. Elsewhere, N of the monsoon trough light 
to gentle winds and slight to locally moderate seas will prevail 
this week. Gentle to moderate S to SW winds and moderate seas 
will occur south of the monsoon trough. 

...REMAINDER OF THE AREA...

A ridge extends from 1030 mb high pressure centered NW of the
area near 39N131W to near the Revillagigedo Islands. The 
pressure gradient between the area of high pressure and lower 
pressure in the vicinity of the ITCZ is supporting mainly 
moderate to fresh winds N of the ITCZ and W of 115W. Light to 
gentle winds are elsewhere N of the ITCZ/monsoon trough. S of the
monsoon trough, gentle to moderate winds prevail. Seas are in 
the 7-10 ft range W of 105W, and 5-7 ft E of 105W. 

For the forecast, moderate to fresh winds will continue N of 10N
through Wed night before diminishing by Thu. The long- period NW
swell will slowly subside through midweek. However, a new NW 
swell event will begin to enter the NW waters the end of the
week. 

$$
AReinhart