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Eastern North Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 281525
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1525 UTC Tue Mar 28 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 1200 UTC surface analysis and satellite imagery through
1500 UTC.

...INTERTROPICAL CONVERGENCE ZONE... 

The intertropical convergence zone axis extends from 06N86W to
05N95W to 02N107W. Scattered moderate and isolated strong
convection from 03N to 06N between 88W and 99W. Scattered
moderate convection is from 08N to 10N between 120W and 125W.

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure north of the area extends a ridge southeast to 
near the Revillagigedo Islands. The gradient between the ridge 
and lower pressure inland over Mexico is supporting fresh to 
strong NW winds west of Baja California Norte and moderate to 
fresh N-NW winds west of Baja California Sur. Gale force winds 
off the coast of southern California will continue to generate 
large long period NW swell that will propagate into the waters 
off Baja California and peak near 13 ft today. The high pressure 
will remain nearly stationary over the next 48 hours.

Light winds and seas prevail over the Gulf of California, except
in the northern Gulf where northwest winds are 20-25 kt due to a
locally tight pressure gradient. Seas will build to 4-7 ft with
these winds. The winds will diminish tonight as the high weakens
slightly. 

Light to gentle winds will prevail elsewhere through the week. 

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

Gap winds are not expected to be very significant the next few 
days across Central America. Light to gentle winds and 3-5 ft 
seas are expected to prevail over the forecast waters the next 
several days.

REMAINDER OF THE AREA...

High pressure of 1032 mb located north of area near 35N132W 
dominates the subtropical eastern Pacific. The pressure gradient 
between this high and the near-equatorial trough is supporting 
fresh to strong trades from roughly 10N-21N west of 120W. Seas 
over this area are in the 8-11 ft range in a mix of long period 
NW swell and NE wind waves. The aerial extent of the trades will 
peak this morning then diminish through Wednesday as the nearly 
high weakens slightly. Marine conditions over the forecast area 
will change little during the next 48 hours under the influence 
of this broad ridge.

$$
LEWITSKY


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Page last modified: Tuesday, 28-Mar-2017 15:26:06 UTC