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Eastern Pacific

NHC

Outlook | Discussion

Central Pacific

NHC

Outlook | Discussion

Eastern Pacific Discussion


000
AXPZ20 KNHC 172101
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1955 UTC Sun Dec 17 2017

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.

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

The ITCZ extends from 06N95W to 10N127W to 10N140W. There is no
significant convection currently associated with the ITCZ.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Gulf of California: A stationary front extending from low pres
centered over the northern Gulf of California across Baja
California to near 25N116W will dissipate tonight. Strong winds
are noted N of 30N and W of 114W in the gulf. These winds will
diminish to 20 kt or less. Winds will strengthen once again over
the northern gulf Thursday.

Gulf of Tehuantepec: Winds will pulse to fresh to strong each
night over the Gulf of Tehuantepec through Thu morning.

Subsiding NW swell prevails off the coast of Baja California
Norte, with seas reaching near 12 ft. Seas will continue to
subside, and fall below 8 ft by Tuesday. A fresh set of NW swell
will propagate into the waters off the coast of Baja California
Norte Thursday, with seas building to near 9 ft. Elsewhere,
gentle to moderate winds and 3 to 5 ft seas will persist along
the coast of Mexico outside of the Gulf of Tehuantepec through
mid week.

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

Fresh to strong NE winds will prevail across the Gulf of
Papagayo through Fri. Fresh N winds will pulse over the Gulf of
Panama tonight and Mon night.

REMAINDER OF THE AREA...

Northerly swell continues to subside over the area. Seas have
diminished to near 14 ft over the northern waters. Moderate to
fresh winds prevail elsewhere over the forecast waters north of
the ITCZ to 20N and west of 125W. High pressure across the NE
Pacific will dominate the regional waters for the next few days
with little change wind speeds. Seas across much of the region
west of 110W will subside below 8 ft during the next couple of
days as long period NW swell continue to decay. Seas will build
above 8 ft over the NW corner of the discussion area Thursday.

$$
AL

Flash Alert!

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