000
AXPZ20 KNHC 290900
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
637 UTC Tue Nov 29 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.

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

The monsoon trough extends from 11N85W to 11N107W to 09N111W where
it transitions to ITCZ. The ITCZ then extends to 11N115W to
10N122W to 09N140W. Scattered moderate to strong convection was
noted within 120 nm north and 90 nm south of the ITCZ between
125W and 131W.

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

NW swell persists the offshore waters along the western coast of
the Baja California peninsula with seas in the 8 to 11 ft range.
Seas over the remainder of the offshore waters of Mexico are in
the 4-7 ft range, with seas 1-3 ft over the Gulf of California.
Continued pulses of northwesterly swell will maintain seas at 8 ft
or above off the coast of the Baja California Norte through
Thursday.

Building high pressure over the Great Basin of the United States
will increase winds to fresh to strong over the Gulf of
California N of 30N this afternoon. These winds will spread
southward to near 28N by this evening.

A cold front moving across the Gulf of Mexico will bring the next
Gulf of Tehuantepec gap wind event toward the end of the week.
Winds are expected to remain below gale force during this next
event, and the duration is expected to be much shorter than the
previous event.
    
OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND
WITHIN 750 NM OF ECUADOR...

Light to gentle winds and seas in the 4 to 6 ft range are noted
north of 10N, with moderate to locally fresh southwest flow and
combined seas of 4 to 6 ft south of 10N. Seas will gradually
subside to 4 to 5 ft by Thursday.

REMAINDER OF THE AREA...

High pressure of 1029 mb centered north-northwest of the area
near 33N140W extends a ridge southeast to near the Revillagigedo
Islands. The pressure gradient between the area of high pressure
and lower pressure in the vicinity of the ITCZ is producing a
large area of fresh to strong northeast to east winds north of the
ITCZ to near 23N and west of 127W. Resultant seas are in the 9 to
13 ft range. High pressure will weaken slightly today which will
decrease areal coverage of strong trades. Continued pulses of
northwesterly swell will maintain seas of 8 ft or greater over
much of the area north of the ITCZ through the remainder of the
week. 

$$
AL