000
AXPZ20 KNHC 212036
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Fri Apr 21 2023

Tropical Weather Discussion for the eastern Pacific Ocean from
03.4S to 30N, east of 120W including the Gulf of California, and
from the Equator to 30N, between 120W and 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
2030 UTC.

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

The monsoon trough extends from 08N78W to 08N90W to 03N110W. The
ITCZ continues from 03N110W to 05N130W to beyond 04N140W. 
Scattered moderate convection is noted from 04N to 08N between 
80W and 85W.

...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A relative weak pressure gradient is in place between 1006 mb 
low pressure over central Mexico, and 1035 mb high pressure 
centered over the eastern Pacific between California and Hawaii. 
Recent satellite derived wind data along with ship observations 
indicated gentle to moderate NW breezes over the Gulf of 
California and off Baja California. Light NW breezes were 
observed off southern Mexico. A concurrent altimeter satellite 
pass confirmed combined seas to 8 ft off Baja California Norte. 
This is likely in NW swell. Slight to moderate seas are noted 
elsewhere off Mexico. Light smoke from agricultural fires off 
southern Mexico is evident over the nearshore waters. 

For the forecast, the high pressure well west of the region will
support gentle to moderate breezes off Baja California and the 
Gulf of California into early next week, becoming fresh to strong
off Baja California Norte Sat night through Sun. A new round of 
large NW swell will move into the waters off Baja California 
north of Punta Eugenia by Sat night, reach as far south as Cabo 
San Lazaro through Mon, before subsiding Tue through mid week. 
Gentle to moderate breezes and slight to moderate combined seas 
will persist elsewhere through late Wed.

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

Weak high pressure north of the region is supporting moderate 
gap winds in the gulfs of Papagayo and Panama. Light to gentle 
breezes are noted elsewhere. Combined seas are mostly 3 to 5 ft.

For the forecast, weak pressure gradient will support light to
gentle breezes across the region into the middle of next week. 
Expect slight to moderate combined seas primarily in S to SW 
swell. 
 
...REMAINDER OF THE AREA...

The subtropical ridge is anchored by 1035 mb high pressure 
centered near 35N132W and extends southeastward to southern 
Mexico. This pattern is supporting moderate to fresh trade winds 
north of 10N and west of 120W. Gentle to moderate breezes are 
evident elsewhere. Combined seas are 6 to 8 ft in NW to N swell 
north of 05N and west of 115W, 4 to 6 ft elsewhere.

For the forecast, winds and seas over the tropical Pacific east of
125W will gradually diminish through early Sat as high pressure 
north of the area weakens and shifts westward. Large NW swell
impacting waters north of 25N and east of 125W will diminish 
through tonight then increase again Sat into Sun night. High 
pressure will continue to shift west and weaken further Sun into 
early next week, leading to a continued most decrease in trades 
west of 125W. Seas will also fall below 8 ft late Sun.

$$
Christensen