000
AXPZ20 KNHC 040301
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Wed Dec 4 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 0000 UTC surface analysis and satellite imagery through
0255 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: Gale-force northerly winds 
continue in the Gulf of Tehuantepec due to a tight pressure
gradient regime. The strongest winds are occurring tonight into 
early Wed. Gales will continue into late Wed night, and strong 
gap winds will occur into early Sun. Rough to very rough seas 
will accompany these winds, with peak seas near 16 ft expected. 
Please read the latest High Seas Forecast issued by the National 
Hurricane Center at the website 
- https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for details.

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

The monsoon trough extends from the coast of Costa Rica near
08N82W to 07N98W. The ITCZ stretches from 07N98W to 09N120W and
to beyond 08N140W. Scattered moderate convection is occurring 
from 05N to 10N and between 88W and 103W, from 05N to 10N and between
106W to 116W, and also from 04N to 12N and west of 120W.

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

Please read the Special Features section above for information 
on gale-force N gap winds in the Gulf of Tehuantepec.

A 1024 mb high pressure situated near 35N130W extends 
southeastward to the Revillagigedo Islands. The weak pressure 
gradient supports primarily moderate NW in the offshore waters of
Baja California and the southern portion of the Gulf of 
California. Seas in these waters are 4-7 ft. Light to gentle 
winds and slight to moderate seas are found in the rest of the 
Mexican offshore waters, excluding the Gulf of Tehuantepec.

For the forecast, aside from gale-force winds in the Gulf of 
Tehuantepec, high pressure over the eastern Pacific will 
continue to support mainly moderate NW-N winds and moderate seas
across the remainder of the Mexico offshore waters this week. 
Winds will diminish this weekend.

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

A strong ridge over the SE United States continues to force
strong to near gale-force easterly trade winds across the Gulf of
Papagayo and downstream to 92W. Seas in these waters are 7-9 ft.
Moderate to fresh easterly winds extend downstream to 100W and 
are also noted in the Gulf of Fonseca. Seas are 4-7 ft in the 
area described.

Farther south, moderate to occasionally fresh northerly winds and
seas of 2-4 ft are present in the Gulf of Panama. Otherwise,
moderate or weaker winds and moderate seas are prevalent.

For the forecast, strong NE winds will occur in the Gulf of
Papagayo into Thu as a strong pressure gradient persists. Winds 
may approach gale-force tonight through Wed morning. Locally 
rough seas in NE swell associated with these winds will occur 
into Thu. Winds will remain fresh into this weekend. Farther 
west, rough seas induced by gale-force winds in the Gulf of 
Tehuantepec will enter waters well offshore of Guatemala tonight.
Moderate to locally fresh NE winds will pulse across the 
remainder of the Central American waters through Thu. Otherwise, 
moderate to at times fresh S-SW winds and moderate seas will 
prevail south of the monsoon trough.

...REMAINDER OF THE AREA...

A 1024 mb high pressure system well north of the area dominates
the basin, forcing moderate to fresh easterly trade winds south
of 20N and west of 130W. Seas in these waters are 8-10 ft.
Elsewhere, moderate or weaker winds and moderate seas prevail.

For the forecast, moderate to rough seas will continue in the
western trade winds waters over the next few days due to high
pressure to the north. In the eastern waters, fresh to strong NE
to E winds and rough seas will spread downstream from the Gulf 
of Tehuantepec and Gulf of Papagayo over the next couple of days,
diminishing late this week. A new area of NW swell will enters
the NW waters this weekend. Otherwise, high pressure will 
dominate the eastern Pacific, supporting moderate to locally 
fresh NE to E winds and moderate seas through the rest of this 
week.

$$
Delgado