119
AXPZ20 KNHC 050720
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Fri Dec 5 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 0600 UTC surface analysis and satellite imagery through
0700 UTC.

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

The monsoon trough extends from 09.5N78.5W to 10N90W to
09.5N104W. The ITCZ runs from 09.5N104W to 08N132W to beyond
08.5N140W. Scattered moderate convection is from 01.5N to 05N
between 78W and 84.5W, from 05N to 09.5N between 84.5W and 90W,
from 12N to 15N between 104W and 111W, and from 06N to 10.5N
between 129.5W and 137W.

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

A trough extends from Baja California near 25N113W through
16N117W per recent ASCAT scatterometer data. Scattered moderate
convection is noted within 360 nm E of the trough. Fresh NW
winds are offshore Mazatlan, Mexico due to a locally tight
pressure gradient. Otherwise, mainly gentle to locally moderate
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 from near Baja California Sur
to W of the Revillagigedo Islands will keep scattered
thunderstorms near the islands through at least today. Moderate
to fresh winds will persists offshore Mazatlan through 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, possibly to near
gale-force. 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 through early today. 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 to Baja California Sur. 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 this afternoon into the weekend N of 05N and W of 130W.

$$
Lewitsky