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Eastern North Pacific Tropical Weather Discussion


000
AXPZ20 KNHC 291554
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Fri May 29 2026

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 1200 UTC surface analysis and satellite imagery through
1500 UTC.

...TROPICAL WAVES...

A tropical wave extends along 95W-96W, S of 15N, moving westward
at 5-10 kt. Clusters of scattered moderate isolated strong 
convection are noted from 03N to 16N between 92W and 100W. 

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

The monsoon trough axis extends from 10N76W to 09.5N87W to 11N97W
to 08N119W to 09.5N123W to 06N131W. The ITCZ begins near 05.5N132W
and continues beyond 06N140W. Aside from the convection 
associated with the tropical wave, numerous moderate to strong 
convection is from 04N to 14N E of 90W. Scattered to locally
numerous moderate isolated strong convection is from 03N to 12N 
between 106W and 130W.

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

A broad surface ridge extends into the region through 30N132W to
near the Revillagigedo Islands. The pressure gradient between 
the ridge and a surface trough across northwestern Mexico is 
producing moderate to locally fresh NW to N winds from Punta 
Eugenia southward to the Revillagigedo. Gentle to moderate NW 
winds prevail across the Baja Norte waters north of Punta 
Eugenia. New NW swell moving into the Baja offshore waters this 
morning is producing seas of 7 to 8 ft across these waters. 
Inside the Gulf of California, winds in the northern section 
remain cyclonic at fresh to locally strong speeds, while gentle 
to locally moderate W to NW winds are elsewhere in the Gulf. Wave
heights are 3 to 5 ft north portions and 2 to 4 ft south and 
central sections. Across the remaining offshore waters to the 
east, winds are light to gentle with seas of 4 to 5 ft in mixed 
NW and SW swell.

For the forecast, NE Pacific high pressure will maintain moderate
to fresh NW winds across the Baja California offshore waters through
the weekend, then winds will diminish slightly early next week 
as the high pressure shifts northward. NW swell moving through
the Baja waters today will merge with SW swell Sat through Sun across
the waters from the Revillagigedo Islands eastward. New N swell 
will then enter the waters N of Punta Eugenia early on Sun. 

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

Numerous heavy showers and thunderstorms are ongoing across most
of the local offshore waters this morning, and is most numerous
across the coastal waters from the Papagayo region to the Gulf of
Panama and NW Colombia. This strong convection is likely 
generating strong gusty winds with locally rough seas. Moderate 
SW to W winds prevail S of 10N, while winds are variable N of 
10N. Seas are mainly moderate in SW swell, except seas to 9 ft S 
and SW of the Galapagos Islands. 

For the forecast, a weak pressure pattern across the region will
result in light to gentle winds through the period. Large SW 
swell entering the waters south of the Equator today, bringing 
rough seas to the waters between the Galapagos Islands and 
Colombia through early Sun before starting to subside. Otherwise,
light to moderate seas will prevail across the forecast waters 
into early next week. Expect convection to remain active across
the area waters through Sat before shifting northward into Sun. 

...REMAINDER OF THE AREA...

High pressure covers the waters north of 17N and west of 110W,
centered on strong high pressure NW of the Hawaiian Islands. The
pressure gradient between the high pressure and lower pressure 
within the monsoon trough/ITCZ is supporting moderate to fresh NE
trade winds N of the ITCZ to near 21N and west of about 120W per
overnight satellite scatterometer data. Seas over these waters 
are in the 7 to 9 ft range in a mix of trade wind swell and NW 
to N swell. Gentle to moderate winds are elsewhere N of the 
monsoon trough E of 120W, as well as S of the trough. Seas across
the waters S of the trough and ITCZ are generally 6 to 8 ft in 
building S to SW swell. 

For the forecast, little change is expected in winds for the 
next few days. The current NW to N swell will combine with wind 
generated waves produced by the fresh trade winds N of the ITCZ 
leading to rough seas over the waters W of 130W through tonight. 
The eastern portion of the NW to N swell will merge with 
southerly swell over the central waters during the weekend, with 
wave heights of 8 to 9 ft projected by Wave model guidance to 
cover a good portion of the waters SW of the southern tip of Baja
California to across the Equator E of 120W, and reaching 
westward to near 140W.

Regarding possible tropical weather: The latest Tropical Weather
Outlook issued by NHC mentions that a broad area of low pressure
is forecast to form early next week well to the southwest of the
southern tip of the Baja California peninsula. Some gradual 
development of this system is possible, and a tropical 
depression could form during the middle part of next week while 
it moves westward or west-northwestward at 10 to 15 kt across the
western portion of the East Pacific.

$$
Stripling