000
AXPZ20 KNHC 261516
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1407 UTC Mon Dec 26 2016

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
1500 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning...High pressure building north
of the area will tighten the pressure gradient across the area.
This will increase the strength of winds funneling through the
Chivela pass into the Gulf of Tehuantepec. Gap winds will
strengthen to 25 kt tonight and further increase to minimal gale
force Tuesday. The gale force winds are expected to continue
through the remainder of the week. The persistent gale force gap
wind event will create a plume of 8 to 12 ft seas extending
several hundred miles from shore. Please see the latest National
Hurricane Center high seas forecast under headers MIAHSFEP2/FZPN03
KNHC for further details.

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

The monsoon trough extends from 08N84W to 06.5N89W to 07N94W. The
ITCZ extends from 07N94W to 06.5N104W to 08N115W to 05N135W to
05N140W. Scattered moderate convection was noted within 60 nm of
the monsoon trough between 92W and 94W. Scattered moderate
convection was noted within 60 nm north of the ITCZ between 100W
and 108W.

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Please see above for more on the upcoming Gulf of Tehuantepec gale
force gap wind event.

Elsewhere, in the Gulf of California, fresh to strong northwest
winds will develop tonight and continue through much of the week.

Northwesterly swell with 8 to 9 ft seas off the coast of Baja
California will subside below 8 ft this evening as it propagates.
A cold front will approach the Baja California waters early in the
week, but stall west of the area.
  
OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND
WITHIN 750 NM OF ECUADOR...

Fresh to strong gap winds will develop in the Gulf of Papagayo
this evening as high pressure builds north of the area and
tightens the pressure gradient over the area. Elsewhere across
the region, winds will remain 20 kt or less, with seas below 8 ft
through early next week.

REMAINDER OF THE AREA...

A cold front extends from 30N123W TO 26N128W TO 28N140W. Strong
winds are found both ahead of and behind the cold front. The front
will usher in a fresh set of northwesterly swell with seas of 8
to 12 ft propagating into the area. Low pressure along the front
will drift south of 30N tonight, then stall and weaken to a
trough near 28N122W by late Tuesday. High pressure building
behind the front will support fresh to strong trades north of the
ITCZ to 20N and west of 125W into mid week.

$$
AL