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Eastern North Pacific Tropical Weather Discussion


000
AXPZ20 KNHC 080915
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Sat Aug 8 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 0600 UTC surface analysis and satellite imagery through
0910 UTC.

...TROPICAL WAVES...

A tropical wave is SW of Tehuantepec with axis near 97W, 
extending from 05N to 15N, and moving westward at 15-20 kt. 
Scattered to isolated moderate convection is from 03N to 11N 
between 92W and 100W. 

A tropical wave extends from 06N to 16N with axis near 114W, 
moving westward at 15 kt. Numerous moderate to strong convection
is from 06N to 15N between 107W and 116W.

A tropical wave extends from 01N to 18N with axis near 134W, 
moving westward at 15-20 kt. Scattered moderate to strong 
convection is from 01N to 16N between 123W and 139W. 

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

The monsoon trough extends from 09N84W to 08N90W to 09N93W. The 
ITCZ begins near 09N96W to 10N103W to 10N110W, then resumes near
09N114W to 08N130W. Aside from the convection associated with the
tropical waves, scattered moderate convection is from 05N to 18N
between 100W and 107W, and from 06N to 15N between 117W and 125W.  

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

An earlier scatterometer pass confirmed fresh to strong NNE winds
in the Gulf of Tehuantepec, reaching about 13N. Rough seas in 
the 8-9 ft range are present with the strongest winds. Moderate 
easterlies are ongoing S of 13N, in the Tehuantepec and Oaxaca 
outer offshore waters along with moderate seas to 7 ft. High
pressure of 1027 mb near 38N139W extends a ridge SE to the Baja
California offshore waters, which is supporting gentle to
moderate NW winds off the Baja Peninsula along with 4-5 ft seas. 
Light to gentle winds prevail elsewhere with slight seas, except
moderate seas in SW swell over the remainder SW offshores. 

For the forecast, fresh to strong gap winds and rough seas are 
expected across the Gulf of Tehuantepec through late Sun. 
The pressure gradient between high pressure NW of the area and 
lower pressure over the Colorado River Valley will support fresh
to locally strong southerly winds across the southern and northern
Gulf of California Sat night into Mon. Elsewhere, a moderate 
pressure gradient will support mostly gentle to moderate winds 
across the remainder offshore waters of Mexico. Looking ahead, a
tropical wave currently SW of Tehuantepec will move west and
reach the Revillagigedo Islands adjacent waters Mon evening
through Wed evening, bringing fresh winds and shower activity to
the region.  

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

Fresh to strong NE to E winds are across and downstream of the 
Gulf of Papagayo to nearly 90W. Seas of 7 to 8 ft accompany the 
plume of gap winds. In the Gulf of Panama, moderate to locally fresh
N winds extends to 06N. Moderate seas in the 4 to 5 ft are over 
this region. Otherwise, moderate easterlies from the Papagayo gap
wind event extends across the Guatemala and El Salvador outer 
offshores where seas are 5-6 ft. Moderate southerly winds are
also across the Ecuador offshores with moderate seas to 5 ft.
Light to gentle winds prevail elsewhere along with moderate seas
in SW swell. 

For the forecast, fresh to strong NE to E gap winds will prevail
in the Papagayo region through Wed, reaching near gale-force
briefly tonight through late Sun as the Bermuda High shift
southward E of the area, thus increasing the pressure gradient
over the SW Caribbean. The gap wind event will produce a fetch of
moderate to locally fresh easterlies across the outer offshore
waters of Guatemala and El Salvador. Moderate or weaker
southerly winds and moderate seas will continue across the
offshores between Ecuador and the Galapagos through the forecast
period. Moderate northerly winds will pulse in the Gulf of Panama
at night through Tue evening. Light to gentle winds and moderate
seas in SW swell are forecast elsewhere through Wed night. 

...REMAINDER OF THE AREA...

A 1027 mb high near 37N139W extends a ridge across the 
subtropical E Pacific waters to nearly 115W. The gradient of 
pressure between this area of high pressure and a tropical wave 
with axis near 134W is supporting moderate to fresh NE to E 
winds from 09N to 20N W of 130W. Seas over these waters are 7-8 
ft. Rough seas to 8 ft are found over the waters S of 02N between
120W and 128W. Elsewhere, gentle to moderate winds and moderate 
seas prevail.

For the forecast, seas to 8 ft in the western tradewind waters 
will subside today. Farther south, southerly swell to 8 ft will 
impact the waters south of 02N and west of 120W through the 
weekend. Otherwise, showers and thunderstorms associated with 
the tropical wave near 134W may further organize, likely 
resulting in the development of a tropical depression early next 
week as this system moves westward toward the central Pacific. 
Also, an area of low pressure could form well offshore of the 
southwestern coast of Mexico early or into the middle of next 
week. Some gradual development of this system is possible 
thereafter as it moves generally west-northwestward.

$$
Ramos