000
AXPZ20 KNHC 081600
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Wed Jan 8 2020

Tropical Weather Discussion for the eastern Pacific Ocean from
the Equator to 32N, east of 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 
1545 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: High pressure over eastern 
Mexico is forcing a strong N gale over the Gulf of Tehuantepec. 
Winds will gradually diminish to below gale force by Thu 
morning. Seas in the vicinity of the Gulf of Tehuantepec range 
from 16-20 ft, however seas to 12 ft extend downstream to near 
10N while seas to 9 ft extend further southwest to near 06N. The 
next gale force wind event is forecast to begin Sat evening and 
end Sun evening as a strong cold front will move across the Gulf 
of Mexico. Peak seas will reach around 15 ft.

Gulf of Papagayo Gale Warning: A large N-S pressure gradient 
across Central America is inducing strong to gale force NE winds
in the Gulf of Papagayo. The gale force winds are expected to 
persist through the afternoon. Peak seas range between 11-12 ft. 
Fresh to near gale NE winds will then prevail through the 
remainder of the week and into the upcoming weekend.

Please read the latest High Seas Forecast issued by the National
Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or 
at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for 
further details on both Gale Warnings.

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

A trough axis extends from the W coast of Colombia near 03N77W 
to 01N83W to 02N09W. The ITCZ then continues from 02N09W to 
05N110W to 07N123W, then resumes near 07N128W and continues 
beyond 06N140W. Scattered moderate convection is from 06N to 10N 
W of 118W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

See the Special Features section for more details about the
Gale Warning for the Gulf of Tehuantepec.

Gulf of California/West of Baja California: A developing low 
over the S central United States will help induce fresh to 
strong NW winds just W of N Baja California and in the northern 
Gulf of California Thu evening into early Fri, spreading 
southward in the Gulf Fri night through Sat afternoon. NW swell 
with seas to 11 ft will begin to affect the waters N of Punta 
Eugenia Wed night and gradually subside through Fri night. 

Long-period NW swell will impact the waters west of Baja 
California Sun through early next week. 

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

See the Special Features section for more details about the
Gale Warning for the Gulf of Papagayo.

Moderate NW swell generated by gales in the Gulf of Tehuantepec 
will impact waters off Guatemala and El Salvador through Thu 
night. 

Gulf of Panama: Fresh to locally strong N to NE winds in the 
Gulf of Panama will prevail through Fri morning.

Elsewhere, winds and seas will be quiescent for the next several
days.

REMAINDER OF THE AREA...

High pressure of 1034 mb is centered NW of the area near 35N147W 
with ridging extending southeastward toward 22N116W. A tight 
pressure gradient S of the high pressure is producing fresh to 
strong trades from 08N to 28N W of 130W. The high is forecast to 
strengthen through the weekend, which will allow the expansion 
of the strong trades to 120W by Fri night. The increasing fetch 
should build a large area of 12-14 ft seas. 

Long-period NW swell will begin impacting the waters N of 29N 
and E of 125W tonight. The swell will spread SE to near 25N by 
Fri before starting to subside.

$$
Ramos