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Eastern North Pacific Tropical Weather Discussion


000
AXPZ20 KNHC 251542
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Fri Apr 25 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 1200 UTC surface analysis and satellite imagery through
1430 UTC.

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

The monsoon trough extends from 10N75W to 08N104W to 06N114W. 
The ITCZ continues from 06N114W to beyond 03N140W. Scattered 
moderate to strong convection is noted from 01.5N to 08N between
78W and AND 92W, and from 03.5N to 08N between 92W and 140W.
Scattered moderate convection is noted from 01.5S to 03.5S
between 96W and 100W. 

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

Satellite scatterometer data from around midnight last night
showed moderate to locally fresh N-NW winds within 60-90 nm of
most of the coast of Baja California and to 20N, and gentle to 
moderate winds further offshore. Winds have diminished very 
slightly this morning. Seas across the Baja Norte waters are 4 to
5 ft in mixed SW and W swell, and 5 to 7 ft in mixed swell 
across the Baja Sur waters. Light to gentle winds are elsewhere 
over the open waters off Mexico from the Revillagigedo Islands to
Tehuantepec, where seas are 4 to 5 ft. Gentle to moderate
cyclonic winds are in the northern Gulf of California, with 
light to gentle winds elsewhere in the Gulf. Seas are 3 ft or 
less in the Gulf of California. 

For the forecast, Pacific high pressure centered well NW of the area
along 146W will drift slowly eastward through the weekend and
reach near 135W on Mon, then remain nearly stationary. The
pressure gradient between this ridge and low pressure across the
Gulf of California will lead to fresh NW winds pulsing offshore 
of Baja California Sur, including near Cabo San Lucas, tonight 
and Sat night. Fresh to strong SW winds will pulse in the 
northern Gulf of California nightly through this weekend. 
Widespread moderate to fresh NW winds, and rough seas, will 
develop this weekend and continue into next week offshore of Baja
California. Fresh to occasional strong N winds will pulse in the
Gulf of Tehuantepec this weekend. 

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

Satellite scatterometer data from around midnight last night
showed moderate to locally fresh E gap winds across the Papagayo
region extending offshore to 75 nm, and moderate N winds across
the Gulf of Panama to 07N. Light to gentle winds prevail 
elsewhere. Seas are in the 4-6 ft range in new S-SW swell, 
except 6 to 7 ft SW through SE of the Galapagos Islands.
Scattered moderate isolated strong thunderstorms are active
within 75 nm of the coast of Guatemala, and across the near and
offshore waters of western Panama and Costa Rica.

For the forecast, Atlantic high pressure extending southwestward 
across the eastern Gulf of America and NW Caribbean will persist
into early next week to maintain moderate gap wind flow across
the regional Pacific waters. Moderate to fresh E winds will 
pulse across the Papagayo region each night and morning into 
next week. In the Gulf of Panama, moderate to locally fresh winds
will pulse nightly into Sat, with generally moderate winds 
expected thereafter. New cross equatorial S-SW swell is entering
the regional waters today and will peak late Sat through Sun.

...REMAINDER OF THE AREA....

High pressure dominates the waters N of 10N, centered on a 1029
mb high near 39N145W. An associated broad ridge extends S and SE
between 105W and 155W. The pressure gradient between this ridge 
and lower pressure in the vicinity of the ITCZ is supporting 
moderate to fresh winds N of the ITCZ to near 22N W of 130
W, and to 18N between 120W and 130W. Seas over these waters are 
in the 6-9 ft range. Gentle to moderate winds, and seas of 5-6 
ft, prevail S of the high center, N of 18N and W of 130W. Gentle
winds, and seas of 5-6 ft are elsewhere over the discussion 
waters. 

For the forecast, the high center NW of the area will drift
slowly eastward through the weekend, and reach along 135W on Mon.
This is expected to yield little change in winds across the 
discussion waters. Rough seas will prevail over the area of fresh
winds in the tradewind zone over the western waters through the 
period. Cross equatorial S swell will propagate into the 
southern waters today through the weekend, raising seas to 8-9 
ft to the south of 10N between 100W and 120W through late Sat 
before seas slowly subside through Sun. Locally fresh N to NW 
winds and rough seas will develop tonight north of 27N behind a 
cold front sweeping across the northern waters, and reaching 120W
by midday Sat.

$$
Stripling