000
AXPZ20 KNHC 060141
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Sun Apr 6 2025

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 0000 UTC surface analysis and satellite imagery through
0100 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: High pressure will begin to 
surge southward along the Sierra Madre Oriental mountains of 
Mexico on Sunday in the wake of a strong late-season Gulf of 
Mexico cold front. The resultant tight gradient is expected to 
lead to minimal gale-force northerly winds in the Gulf of 
Tehuantepec starting early on Mon, increasing to strong gale-
force by early Mon evening. Seas are expected to build to a peak
of around 12 ft Mon afternoon as the leading edge of 8 ft and 
greater seas reaches to near 14N95W. The gale conditions are 
expected to continue through at least the middle of next week. 
Please refer to the the latest High Seas Forecast issued by the 
National Hurricane Center at website: 
https://www.nhc.noaa.gov/text/ MIAHSFEP2.shtml

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

A surface trough axis extends from near the border of Panama and
Colombia at 07N78W to 04N87W. An ITCZ extends from 08N109W to
02N140W. A southern ITCZ extends from 0S109W to 02.5W120W and
beyond. Widely scattered moderate convection is noted from 01S to
08N between 83.5W and 90W, from 08N to 13N between 101W and 107W,
from 03.4S to 01S between 113W and 117W, and from 04N to 08N
between 118W and 130W. Scattered moderate isolated strong from
05N to 09.5N between 107W and 118W.

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

Please see the Special Features section for information on 
an upcoming Gulf of Tehuantepec gale warning.

Strong high pressure extends a ridge across the offshore waters
of Mexico. Meanwhile a trough extends across NW mainland Mexico.
A tight pressure gradient is over the central and southern Gulf
of California supporting fresh to strong NW to N winds. Moderate
to fresh NW to N winds are elsewhere from offshore SW Mexico to
offshore Baja California where seas are 5 to 7 ft in NW swell. 
Gentle to moderate winds are elsewhere offshore southern Mexico 
and in the northern Gulf of California. Seas are 4 to 6 ft
offshore southern Mexico as well as in the central and southern
Gulf of California, and 3 ft or less in the northern Gulf of
California.

For the forecast, the moderate to fresh NW to N winds will 
prevail through the Baja California waters and offshore of 
southwestern Mexico into next week. Pulsing fresh to strong NW 
winds are expected in the central and southern Gulf of California
tonight into Mon as the pressure gradient strengthens between 
ridging to the west and troughing over western Mexico. Looking 
ahead, strong N winds will develop Sun night in the Gulf of 
Tehuantepec before quickly strengthening to gale-force early Mon
along with rough seas, continuing through at least the middle of
next week. Elsewhere, long-period NW swell will support rough 
seas across the Baja California waters early next week.

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

Low pressure over northwestern Colombia is currently allowing 
for the development of fresh to locally strong NE to E winds in 
the Gulf of Papagayo along with seas to 6 ft. Moderate N to NE
winds are in the Gulf of Panama, while a plume of moderate
easterly winds are south of 13N and west of 90W. Over the
remainder of the waters, light to gentle variable winds and 3 to
5 ft seas prevail, except 3 to 4 ft offshore Colombia and eastern
Panama.

For the forecast, NE to E winds in the Gulf of Papagayo will 
pulse to fresh to strong speeds tonight through Sun morning as 
low pressure prevails over northwestern Colombia, then will pulse
again nightly starting Tue night. Locally fresh E winds will 
extend through the offshore waters of El Salvador and Guatemala 
until late tonight. Elsewhere, mixed SW and NW swell will 
maintain moderate seas between Ecuador and the Galapagos Islands 
into next week, with a new set of rough SW swell possibly
reaching SW of the Galapagos in the middle of the week. 
Otherwise, gentle to locally moderate winds are expected across 
the remainder of the waters into next week, along with slight to
moderate seas.

...REMAINDER OF THE AREA....

Broad surface ridging covers much of the eastern Pacific waters,
supporting moderate to fresh NE to E winds north of the ITCZ to 
24N. Seas of 7 to 9 ft in mixed NE and NW swell are over this 
part of the area. North of 24N, gentle anticyclonic winds are 
present there along with seas of 4 to 6 ft in W to NW swell 
merging with N swell. A weak cold front is near 30N140W. Large
swell of 8 to 11 ft is outrunning the front just SE of 30N140W. 
Otherwise, gentle winds and seas of 4 to 7 ft in mixed NW and S 
are noted over the waters south of the ITCZ. 

For the forecast, rough seas associated with the weak cold 
front that will be moving through the northern waters are 
forecast to progress southeastward through the rest of this 
weekend, with rough seas expected north of 25N and west of 135W 
by late tonight, and north of 15N and west of 125W by Mon 
afternoon. Rough seas to 12 ft will be possible north of 20N and 
west of 130W Sun through Mon. Farther south, moderate to fresh 
trade winds will prevail into next week north of the ITCZ to 25N.
These winds will help to maintain rough seas in this region. By 
early next week, rough seas in mixed NW and E to NE swell will 
dominate much of the open waters. Looking ahead, long-period 
southern hemisphere swell will promote rough seas south of 05N 
early next week. 

$$
Lewitsky