000
AXPZ20 KNHC 281458
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Wed Apr 28 2021

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
1430 UTC.

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

The monsoon trough extends from 1010 mb low pressure over
northern Colombia near 08N74W to 10N89W to 07N99W to 10N109W to
08N120W to 05N129W. The ITCZ continues from 05N129W to 03N140W.
Scattered moderate and isolated strong convection is noted within
210 nm south of the axis between 84W and 126W, and within 210 nm
north of the axis between 107W and 131W. Scattered moderate
convection is noted from 10N to 13N between 86W and 94W, from 01N
to 05N between 78W and 82W, and from 00N to 03N between 95W and
110W. 

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Strong northwest winds over the central Gulf of California have
diminished early today with moderate to fresh winds there now. 
Moderate to fresh winds prevail west of the Baja California 
peninsula. Gentle to moderate winds prevail elsewhere over the 
open waters off Mexico. Seas are in the 3-5 ft range in a mix of
northwest and south swell over the open waters off Mexico.

For the forecast, high pressure west of the region will support 
moderate to fresh winds off Baja California, locally strong in
the central and southern Gulf of California through the end of
the week. A set of northwest swell will build west of Baja
California late in the upcoming weekend. Farther south, slight 
to moderate seas will build today as a set of southerly swell 
arrives. Additional southerly swell will further build seas 
slightly late Fri and Sat over the waters south of the Gulf of 
Tehuantepec region, then subsiding Sun. 

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

Fresh to strong gap winds over the Gulf of Papagayo have
diminished to moderate to fresh early this morning, with 
moderate to fresh winds over the Gulf of Panama. Gentle to 
moderate winds persist elsewhere. Seas are in the 4-6 ft range in
lingering southerly swell, except 5-8 ft offshore of Ecuador.

For the forecast, gentle to moderate winds will persist across 
the region, with subsiding southerly swell. Southerly swell will
gradually subside through the end of the week.

REMAINDER OF THE AREA...

High pressure of 1025 mb is centered near 36N128W. The pressure 
gradient between the area of high pressure and lower pressure in 
the vicinity of the ITCZ is supporting moderate winds north of 
the ITCZ, with seas in the 4-7 ft range. Light to gentle winds 
and seas in the 5-7 ft range prevail elsewhere. High pressure 
will continue north of the area with these general conditions 
prevailing into the upcoming weekend. A set of northwest swell
with building seas will propagate south of 30N between 120W and 
130W late in the weekend.
 
$$
Lewitsky