285
AXPZ20 KNHC 102004
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Wed Dec 10 2025

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 1800 UTC surface analysis and satellite imagery through
2000 UTC.

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

The monsoon trough extends from 09N85W to 06N92W to 10N127W. The
ITCZ continues from 10N127W to beyond 08N140W. Scattered moderate
convection is noted from 10N to 15N between 97W and 107W. Scattered
moderate and isolated strong convection is noted from 05N to 15N
between 118W and 140W.

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

Fresh to strong gap winds are over and downstream the Gulf of
Tehuantepec, where seas are in the 6-8 ft range. Elsewhere, a
ridge extends from high pressure located N of the area to across
the offshore forecast waters of Baja California. The pressure
gradient between this ridge and a trough over western Mexico is
supporting gentle to moderate winds over the Gulf of California.
Light to gentle winds and moderate seas in long period NW swell
are noted across the remainder of the Mexican offshore waters,
with slight to moderate seas in the Gulf of California.

For the forecast, fresh to strong northerly gap winds will
prevail in the Gulf of Tehuantepec through the end of the week.
Winds over Tehuantepec will diminish late Fri through Sat before
strengthening again on Sat night, possibly reaching gale-force
again Sun night through Mon night. Moderate to locally fresh N
winds near Cabo Corrientes will diminish Thu.

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

Moderate to locally fresh winds are over and downstream the Gulf
of Papagayo. Light to gentle winds are elsewhere N of 05N.
Gentle to locally moderate southerly winds prevail S of 05N. Seas
are mainly moderate in mixed SW and NW swell, with exception of
slight seas nearshore from Colombia northward.

For the forecast, mainly gentle winds will prevail N of the
monsoon trough over the next several days, except pulsing to
moderate to fresh in the Gulf of Papagayo, locally strong at
times. Gentle to moderate winds will prevail S of monsoon trough.
Moderate N winds will pulse in the Gulf of Panama. Moderate seas
in mixed SW and NW swell are expected over the regional waters
through the week and into the weekend.

...REMAINDER OF THE AREA...

High pressure dominates the waters N of the ITCZ. The pressure
gradient between this area of high pressure and lower pressure in
the vicinity of the ITCZ is supporting moderate to fresh winds N
of the ITCZ and west of 130W. Seas are in the 5 to 7 ft range
over these waters. Gentle to moderate winds, and seas of 4 to 7
ft, prevail elsewhere over the discussion waters.

For the forecast, a set of long period NW swell is forecast to
reach the NW part of the forecast region by this evening,
building seas to 8 to 9 ft over these waters before subsiding by
the end of the week. The pressure gradient may tighten by the end
of the weekend with trades just N of the monsoon trough and ITCZ
freshening into early next week.

$$
AL