AXPZ20 KNHC 180304
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2347 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
Based on 0000 UTC surface analysis and satellite imagery through
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
The ITCZ extends from 06N90W to 10N116W to 10N140W. Scattered
moderate convection was noted from 08N to 10N between 130W and
OFFSHORE WATERS WITHIN 250 NM OF MEXICO...
Gulf of California: A stationary front extending from low pres
near 31N112W 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 tonight.
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
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 12 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.