000
AXPZ20 KNHC 192132
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2100 UTC Tue Mar 19 2019

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 1800 UTC surface analysis and satellite imagery through
2100 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: Strong to near gale-force 
winds prevail in and downstream from the Gulf of Tehuantepec. 
Winds will pulse to gale force during the overnight hours Wed and
Thu night with the additional component of drainage flow. Seas 
will peak near 12 ft during the period of gale force winds. 

Please see 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.

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

A surface trough extends from 08N78W to 08N85W to 06N94W. The 
ITCZ continues from 06N94W to 01N123W to 06N136W to beyond 
07N140W. Scattered moderate isolated strong convection was noted
from 04N to 09N between 82W and 86W. Scattered moderate isolated
strong convection was noted within 30 nm N and 60 nm S of the
surface trough between 88W and 94W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...  

Please read the Special Features section for more details about 
the developing Gale Warning in the Gulf of Tehuantepec.

Gulf of California: Light to gentle winds prevail across the 
Gulf, as a weak surface pressure gradient dominates the region. 
A weak cold front will approach the northern Gulf of California 
from late tonight into Wednesday. S to SW gap winds will
strengthen with the passage of the front. 

Light to gentle winds prevail elsewhere over the open waters. NW
swell will propagate into the waters off the coast of Baja
California Norte tonight. The swell will spread southward across
the rest of the Baja Peninsula, with seas greater than 8 ft or
greater prevailing over this area by Thu before starting to
gradually subside. 

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

Gulf of Papagayo: Winds will pulse to strong during the overnight
hours across the Gulf of Papagayo through the forecast period.

Gulf of Panama: Northerly winds will freshen over the Gulf of 
Panama Thursday night through Sun night.

Between Ecuador and the Galapagos Islands, 5-7 ft seas in SW 
swell will persist through early Wed. Elsewhere, generally light 
to moderate winds and 3-5 ft seas will prevail for the next 
several days. 

REMAINDER OF THE AREA... 

A cold front extends from 30N122W to 26N124W to 21N130W. Fresh 
to strong southerly winds prevail N of 29N within 30 nm east of 
the front. The front has ushered in a large set of NW swell into
the area. Seas are currently peaking near 15 ft over the NW
waters. The swell will continue to propagate SE across the waters
while subsiding the next couple of days. By Thu afternoon, seas 8
ft or greater will cover the area W of a line from 30N116W to 
20N110W to 10N110W to 00N121W.

Elsewhere, moderate to fresh trade winds prevail mainly S of 18N
and west of 116W to the ITCZ. High pressure building in the wake
of the front will bring a slight increase to the trades Wed. Another
cold front will approach from the northwest toward the end of 
the week, ushering in another set of large long period NW.

$$
AL