886
AXPZ20 KNHC 050316
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Thu Dec 4 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 0000 UTC surface analysis and satellite imagery through
0300 UTC.

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

The monsoon trough extends from 08.5N78.5W to 08N96.5W. The
ITCZ runs from 08N96.5W to 09N120W to 05.5N135W to beyond
06.5N140W. Scattered moderate convection is from 06N to 08N
between 85W and 90W, and from 06.5N to 11N between 133W and 138W.

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

A trough extends from Baja California near 25N112W through 1014
mb low pressure near 22N117W to 18N120W. Scattered moderate
convection is noted within 240 nm E of the trough and low.
Fresh gap winds are noted in the northern Gulf of California, and
fresh NW winds have developed just offshore Mazatlan, Mexico.
Otherwise, mainly gentle winds prevail. Moderate seas prevail
across the Mexican offshore waters and the northern Gulf of
California, except slight near the Gulf of Tehuantepec and
across the southern half of the Gulf of California.

For the forecast, a surface trough west of the Revillagigedo
Islands will keep scattered thunderstorms near the islands
through Fri. Moderate to fresh N winds will diminish in the
northern Gulf of California tonight. High pressure building
southward toward the region will lead to increasing winds for
the Gulf of California and the Gulf of Tehunatepec for the start
of next week. Mon and Tue, strong gap winds are forecast in the
Tehuantepec region. Mainly slight to moderate seas will prevail
across the waters, except building to rough in the Gulf of
Tehuantepec early next week.

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

Surface ridging extending across the northern Caribbean supports
moderate to fresh NE winds and moderate seas in the Papagayo
region. S of the monsoon trough, gentle to moderate S to SW
winds and moderate seas prevail. Elsewhere, mainly light winds
with moderate seas prevail.

For the forecast, moderate to fresh gap winds will persist near
the Papagayo region tonight. Light to gentle winds and slight to
moderate seas are expected elsewhere through early next week.

...REMAINDER OF THE AREA...

A deep plume of moisture extends from the ITCZ in the W-central
waters northeastward from 14N to 21N between 130W and 140W. At
the surface, moderate to locally fresh winds and seas, dominate
N of the ITCZ and W of 125W. Elsewhere, gentle to locally
moderate winds and moderate seas prevail.

For the forecast, moderate to fresh trades will dominate N of
the ITCZ to 25N and W of 125W into the weekend, with moderate or
weaker winds elsewhere. Moderate seas will generally prevail, but
NW swell combined with easterly wind waves will lead to rough
seas Fri night into the weekend N of 20N and W of 135W.

$$
Lewitsky