000
AXPZ20 KNHC 261006
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 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 0600 UTC surface analysis and satellite imagery through
0900 UTC.

...SPECIAL FEATURES...

Gale warning Gulf of Tehuantepec...High pressure building north
of the area will tighten the pressure gradient across the
Isthmus of Tehuantepec, and gap winds will strengthen Monday
night and Tuesday, then further increase to gale force by
Tuesday evening. Gale winds are likely to continue into the New
Years weekend. The persistent strong gap winds will support a
plume of 8 to 12 ft seas extending several hundred miles from
shore beginning Tuesday morning. 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 08N78W to 07N89W to 07N97W. The
ITCZ begins near 07N97W and continues along 07N114W to 07N140W.
Scattered moderate to isolated strong convection is from 05N to
09N E of 82W.

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Gulf of California: Fresh to strong northwest winds will develop
Monday night as the pressure gradient tightens between high
pressure building north of the area over the western U.S. and a
center of low pressure and associated cold front over northern
forecast waters. These winds will extend down to the central
Gulf of California through Tuesday evening.

Northwesterly swell with 8 to 9 ft seas off the coast of Baja
California will subside below 8 ft Monday evening as it
propagates southward. 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...

Moderate to fresh gap winds will prevail in the Gulf of Papagayo
through early Tuesday morning when building high pressure north
of the area will tighten the pressure gradient over the area to
support pulses of fresh to strong NE winds during the night
hours through the New Years weekend. 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 crossing 30N west of 125W will be accompanied by
strong westerly winds. 8 to 12 ft seas associated with the front
will propagate into the area, covering the area north of 28N and
west of the front through Monday night. Low pressure along the
front will drift south of 30N Monday night, then stall and
weaken to a trough near 27N124W by late Tuesday. The gradient
between this low pressure/trough and strong high pressure to the
northwest will allow a new round of strong northerly winds with
10 to 13 ft seas over the area from 26N to 30N between 125W and
135W through mid week. High pressure building behind the front
will support fresh to strong trades from 10N to 20N and west of
125W into mid week.

$$
Ramos