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Eastern North Pacific Tropical Weather Discussion


928 
AXPZ20 KNHC 150317
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Wed Apr 15 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 0000 UTC surface analysis and satellite imagery through
0200 UTC.

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

A surface trough extends from 09.5N74W TO 02N82W to 04N92W to 
03.5N106W. The ITCZ extends from 03.5N108W to 04.5N126W to 03N135W
to beyond 04N140W. Southern hemispheric ITCZ extends from 03.4S95W
to 02.5N99W to 03.4S108W to 02.5S112W to beyond 03S120W.
Scattered moderate isolated strong convection is noted S of 04N 
between 80W and 97W. Numerous moderate to strong convection is 
noted from 04N to 06.5N between 89W and 107W. Scattered moderate
isolated strong convection is noted from 03.5N to 09.5N between 
117W and 140W. 

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

High pressure continues to build gradually southward across the
Baja California waters tonight, as a weak cold front has
dissipated across central Baja and the central Gulf of 
California this afternoon. This current pressure pattern is 
producing moderate to fresh NW winds across the Baja nearshore 
waters becoming N winds from 21N southward across the 
Revillagigedo islands. Gentle to moderate northerly winds prevail
offshore of central and northern Baja. Seas in these offshore 
waters are 5 to 6 ft in NW swell, except to 7 ft near Punta 
Eugenia and across Bahia de Sebastian Vizcaino, where fresh winds
have prevailed all afternoon. Moderate to locally fresh N-NW 
prevail across the Gulf of California, and extend southward to 
offshore of Cabo Corrientes. Seas are 3 to 5 ft across these 
waters. However, wind have become light and variable across 
northern portions of the Gulf in recent hours. Gentle to moderate
NW to W winds prevail across the remaining waters between Cabo 
Corrientes and Puerto Angel, where seas are 4 to 5 ft in SW 
swell. Fresh N gap winds are across the waters inside the Gulf of
Tehuantepec, where seas are around 5 ft. 

For the forecast, moderate to fresh NW winds will prevail across 
the waters on both sides of the Baja California Peninsula tonight
as high pressure builds in from the North Pacific. This ridging 
will then dominate the waters through the week. New NW swell 
will propagate into Baja waters late Thu and produce rough seas 
across the outer waters of Baja Norte into early Sat. Between 
Baja Sur and Puerto Angel, winds will be moderate or weaker with 
moderate seas through Fri. Fresh northerly gap winds are expected 
across the Tehuantepec tonight before winds there become variable
throughout the remainder of the week. Looking ahead, high 
pressure will weaken across the region Sat leading to diminishing
winds and seas. 

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

Fresh to locally strong NE gap winds prevail across the Papagayo
region and extend downwind to beyond 90W, producing seas 6 to 8 
ft. Moderate to locally fresh N to NE winds and moderate seas 
prevail in the Gulf of Panama and extend beyond the Azuero 
Peninsula to near 04.5N. Light to gentle winds and moderate seas
in S-SW swell dominate the remainder of the offshore forecast 
waters. Scattered moderate to strong convection has become active
along a surface trough that extends from the nearshore waters of
SW Colombia to N of the Galapagos Islands along 02N, leaving the
waters offshore of Costa Rica without showers. 

For the forecast, broad high pressure will continue N of the 
area into Wed night before gradually weakening through the end 
of the week. This will maintain fresh gap winds pulsing to strong
during the nighttime and early morning hours across the Papagayo
region to near 90W through Wed night, then yield moderate winds 
pulsing to fresh each night into the weekend. In the Gulf of 
Panama, moderate northerly winds will pulse to fresh tonight and
Wed night, then will diminish slightly through the rest of the 
week. Light to gentle winds and moderate seas will prevail 
elsewhere. Active convection occurring N of the Galapagos tonight
will gradually shift westward and out of the are through Fri
night.

...REMAINDER OF THE AREA...

1027 mb high pressure is centered N of the area near 3N134W and 
extends a ridge southward across the region W of 110W. The 
pressure gradient between the ridge and lower pressure in the 
vicinity of the ITCZ supports moderate to fresh trade winds south
of 16N between 100W and 115W, and moderate to fresh NE to E 
winds south of 25N and west of 115W. Seas are generally 5 to 7 ft
in mixed swell across the area, except less than 5 ft across the
far NW waters near the high pressure center. Scattered to locally
numerous convection has become more active along and N of the 
ITCZ and trough between 90W and 100W, and between 115W and 135W, 
and is producing areas of strong and gusty winds, and potentially
higher seas.

High pressure just N of the area will shift southeastward to 
near 33N through Wed, and strengthen the pressure gradient 
modestly across the local area tonight and Wed. Cross- 
equatorial swell will raise seas along the equator 7 to near 8 ft
through Wed. Moderate to fresh winds are expected in the trade 
wind zone through Fri. The high pressure will weaken just N of
the area on Sat to produce diminishing winds and seas through the
weekend.

$$
Stripling