863 
AXPZ20 KNHC 190328
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Sat Nov 19 2022

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.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: Gale force winds will prevail
through 06z across the Gulf of Tehuantepec. Fresh to near gale 
force winds will prevail on Sat and increase again to gale force
Sun morning, continuing into Tue morning. Seas during the second
gale event will build to 14 ft. For further details, please see 
the latest NWS High Seas Forecast issued by the National 
Hurricane Center at 
https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml.

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

The monsoon trough extends from 09N84W to 09N126W. The ITCZ 
continues from 09N126W to 10N140W. Scattered moderate convection
is from 08N to 15N between 100W and 134W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Refer to Special Features section above for details on a Gale 
Warning currently in effect for the Gulf of Tehuantepec.

Elsewhere, a weak pressure gradient across the region is supporting
gentle to locally moderate NW winds along with 5 ft seas, except
for 3 ft in the Gulf of California. 

For the forecast, gale-force winds will continue across the Gulf
of Tehuantepec through 06Z tonight, then return on Sun through 
Tue. Strong high pressure will build across the Great Basin on 
Sat morning, increasing the NW winds across the northern Gulf of 
California to fresh to strong with building seas to 5 ft. 
Moderate to fresh NW winds will extend to the entrance of the 
gulf Sat evening and prevail through early Tue morning. Gentle to
locally moderate winds are forecast to remain elsewhere. 

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

Moderate to fresh gap winds are ongoing in the Papagayo region 
with seas to 5 ft. Elsewhere, gentle to moderate S to SW winds 
are across the Central and South America offshore waters south of
the monsoon trough with 3 to 5 ft in SW swell. Gentle variable 
winds and slight seas prevail elsewhere N of the monsoon trough.

For the forecast, moderate to fresh easterly NE to E winds will
persist across the Gulf of Papagayo and coast of Nicaragua
through early next week, increasing to strong speeds at night. 
Wave heights will likely build to 7 ft beyond 90 nm off Guatemala
through the weekend due to swell generated from gale force gap 
winds nearby in the Gulf of Tehuantepec. Gentle to moderate winds
will persist elsewhere through the forecast period along with 
slight to moderate seas. 

REMAINDER OF THE AREA...

Broad surface ridging persists north of 15N and W of 110W, 
supporting moderate to fresh trade winds from 12N to 24N west of 
120W, with 7 to 9 ft wave heights. NW swell W of 125W is leading
to seas of 8 to 9 ft N of 10N. 

For the forecast, moderate to fresh easterly winds will prevail 
into early next week across most of the basin as a reinforcing 
NW swell moves in. Seas will build to 9 ft near the ITCZ west of 
125W as high pressure north of the area supports a broad area of
fresh trade winds, and mixes with the decaying long-period 
swell. SW swell will support seas building to 9 ft along and 
south of 03.5S tonight into Sat.

$$
ERA