000
AXPZ20 KNHC 030925
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Fri Dec 3 2021

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
0920 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: The pressure gradient between 
high pressure over the Gulf of Mexico and lower pressure within 
the eastern north Pacific monsoon trough is supporting gale-force
gap winds over the Gulf of Tehuantepec through early today. Through
the weekend, winds are forecast to remain fresh to strong. Seas 
will peak near 11 ft in the morning. Please see the latest NWS 
High Seas Forecast issued by the National Hurricane Center at 
website://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more information.

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

The monsoon trough extends from 04N77W to 06N90W. The ITCZ continues
from 06N90W to 07N115W to 09N127W. It then resumes from 10N133W to
beyond 09N140W. Scattered moderate convection is noted from 07N to
12N between 114W and 122W and from 09N to 14N between 124W and 129W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO

Please see the Special Features section above for details on the
ongoing gale-force gap wind event in the Gulf of Tehuantepec.

N to NE gale-force winds will continue in the Gulf of Tehuantepec,
with seas building to 11 ft this morning. Moderate to locally 
fresh NW winds are along the southern Gulf of California, the 
entrance of the gulf and south of Cabo San Lazaro. Elsewhere, a 
weak pressure gradient prevails, supporting mainly light to 
gentle winds E of 96W. Seas are in the 4-5 ft range over the 
open waters off Mexico, and 1-4 ft over the Gulf of California. 

On the forecast, the gale gap winds in the Gulf of Tehuantepec 
will drop below gale early in the morning, then strong winds 
will remain in the region before diminishing to moderate speeds 
Sun morning. Moderate to locally fresh NW winds at the entrance 
of the Gulf of California, and the southern Gulf of California 
will prevail through Sun. Moderate to locally fresh winds will 
develop over the waters west of the Baja California peninsula 
through Sun night. Light and gentle winds return west off the 
Pacific coast of Baja California on Monday before the next cold 
front enters the area Tuesday.
 

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

Fresh to strong NE winds, and seas to 8 ft, prevail over the
Gulf of Papagayo. Gentle winds are elsewhere north of the
monsoon trough. Gentle to moderate winds are south of the 
monsoon trough. Seas are in the 4-6 ft range. 

For the forecast, the fresh to strong NE winds in the Papagayo 
region will prevail through Tue night. Gentle to moderate S to 
SW winds are expected S of the monsoon trough through early next 
week. Moderate winds will impact the Gulf of Panama today. 

REMAINDER OF THE AREA...

A 1021 mb high pressure centered near 28N120W remains in control
across the waters north of 20N. The tight pressure gradient 
between this area of high pressure and low pressure in the 
vicinity of the ITCZ is supporting moderate to fresh winds north 
of the ITCZ to near 20N and west of 120W. Light to gentle winds 
are over the waters north of 20N, except W of 130W where moderate
to fresh NE winds are noted along a surface trough near 22N129W
to 09N131W. Moderate to locally fresh SE winds prevail south of 
the ITCZ. Seas are in the 5-7 ft range.

$$
Torres