746
AXPZ20 KNHC 101431
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 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 1200 UTC surface analysis and satellite imagery through
1430 UTC.

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

The monsoon trough extends from 09N85W to 07N92W to 10N126W. The
ITCZ continues from 10N126W to beyond 08N140W. Scattered
moderate and isolated strong convection is noted from 10N to 16N
between 98W and 106W, from 06N to 14N between 120W and 132W, and
from 05N to 10N between 132W 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 8-10 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 moderate to fresh 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 on Sat before strengthening
again on Sat night, possibly reaching gale-force again Sun night.
Moderate to fresh winds in the Gulf of California will gradually
diminish through tonight. Fresh N winds may develop near Cabo
Corrientes today through tonight.

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

Fresh to locally strong 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 and monsoon
trough. The pressure gradient between this area of high pressure
and lower pressure in the vicinity of the ITCZ and within the
monsoon trough is supporting moderate to fresh winds N of the
monsoon trough/ITCZ to 21N and west of 120W. 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 new 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