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Eastern North Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 232058
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2058 UTC Thu Mar 23 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
2045 UTC.

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

The intertropical convergence zone axis extends from 06N135W to
05N140W. No significant convection is present.

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

In the Gulf of Tehuantepec, the pressure gradient combined with 
nocturnal drainage flow will continue to support a pulse of fresh
to strong northerly winds through Friday morning. Seas will 
build to 8 ft Friday morning.

Elsewhere, a dissipating cold front moving across the Baja 
California Peninsula will continue SE dissipating tonight into
early Friday. High pressure building behind the front will 
support fresh to strong NW to N flow across the central and
southern Gulf of California through early Friday. NW swell of 
8-10 ft is following the front as well off the coast of Baja 
California, reaching the Revillagigedo Islands. Winds will 
diminish across the area as the gradient relaxes through 
Saturday, along with swell subsiding below 8 ft. 

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

High pressure will prevail across the NW Caribbean and Gulf of 
Mexico allowing for the continuation of fresh to strong gap 
winds across the Gulf of Papagayo through early Saturday with 
seas to 8 ft. Winds will then pulse to fresh thereafter.

Elsewhere, light to gentle winds and combined seas of 3-5 ft are
expected to continue the next several days, except in the Gulf 
of Panama where they will pulse to fresh breeze levels through 
the end of this week.

REMAINDER OF THE AREA...

A dissipating cold front extending into the offshore waters area
from near the southern Baja California Peninsula coast to 19N120W
will continue drifting SE as it dissipates through this evening.
Seas in the 8-10 ft range behind this front will propagate SE 
while decaying through the next 24-36 hours. Another cold front 
is forecast to reach the NW portion of the discussion area early 
Friday morning followed by a new round of NW swell. A third 
cold front may arrive by Sunday afternoon, moving across the
NW portion of the discussion waters through early next week. 

Farther south, combined seas in the 8-10 ft range cover the 
waters along and north of the ITCZ where trades are pulsing to
fresh to strong.

$$
LEWITSKY



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Page last modified: Thursday, 23-Mar-2017 20:58:40 UTC