AXPZ20 KNHC 290220
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Wed Mar 29 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...
The Intertropical Convergence Zone axis extends from 06N86W to
04N95W to 02N103W. Scattered moderate and isolated strong
convection is noted from 04N to 07N between 89W and 94W.
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. Long period NW
swell continues to propagate across the offshore waters west of
Baja California building seas to 11-12 ft. The high pressure
will remain nearly stationary over the next 24 hours, then will
shift westward. Thursday night into Friday, additional pulses of
NW swell will bring seas of 11-12 ft across the offshore zones
PMZ009 and PMZ011.
Fresh to strong NW winds are noted across the central Gulf of
California, particularly between 26N-29N. The winds will
diminish tonight as the high pressure 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 wind events 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 1030 mb located north of area near 34N133W
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
west and weakens slightly. Marine conditions over the forecast
region will change little during the next 48 hours under the
influence of this broad ridge.