AXPZ20 KNHC 282119
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
Based on 1800 UTC surface analysis and satellite imagery through
...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.
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
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
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.