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Eastern North Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 282119
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 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 1800 UTC surface analysis and satellite imagery through
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE... 

The Intertropical Convergence Zone axis extends from 06N86W to 
04N95W to 03N103W. Scattered moderate and isolated strong 
convection from 04N to 07N between 87W and 90W. Scattered 
moderate convection is withon 90 nm either side of axis between
90W and 100W. 

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure north of the area extends a ridge southeast to 
near the Revillagigedo Islands. The pressure 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 through Monday
morning. 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 1031 mb located north of area near 34N131W 
dominates the north forecast waters. The pressure gradient 
between this high and the near-equatorial trough is supporting 
fresh to strong trades from roughly 10N-21N west of 125W. 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 
diminish through Wednesday as the high pressure moves toward the
SW and weakens slightly. Marine conditions over the forecast 
area will change little during the next 48 hours under the 
influence of this broad ridge.

$$
GR


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Page last modified: Tuesday, 28-Mar-2017 21:20:03 UTC