000
AXPZ20 KNHC 090900
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Sat May 9 2020

Tropical Weather Discussion for the eastern Pacific Ocean from
the Equator to 32N, east of 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 
0900 UTC.

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

A surface trough extends from the Panama/Colombia border near 
08N78W to 07N122W. The ITCZ extends from 07N125W to 07N140W. 
Scattered moderate isolated strong convection is noted from 05N 
to 09N between 87W and 96W, and from 03N to 09N between 107W and 
121W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Haze and areas of smoke from agricultural fires in Mexico may 
reduce visibilities near the coast from the Tehuantepec region 
to near Cabo Corrientes.

Strong northerly gap winds will develop across the Tehuantepec 
region late tonight, and continue through Mon night. Gentle to 
moderate winds are expected elsewhere across the region during 
the next several days.

A ridge axis extends from 32N133W to the Revillagigedo Islands. 
Scatterometer data shows gentle to moderate winds across the 
entire region. Long period 6-9 ft southerly swell is propagating 
into the offshore waters, and will impact the coastline of 
Mexico this weekend, creating potentially hazardous surf. This 
swell will decay by the end of the weekend into early next week.

Otherwise, gentle to moderate NW winds and 3-5 ft seas persist 
across the offshore waters S of 20N, and 4 to 7 ft N of 20N.

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

Haze and areas of smoke from agricultural fires in Central 
America may reduce visibilities near the coasts of Costa Rica, 
El Salvador and Guatemala.

Scatterometer data shows gentle to moderate winds across the 
entire region. Gentle to moderate winds will continue across 
most of the region during the next several days. 

Large long period SW swell will continue to impact the offshore
waters of Central America, Ecuador and Colombia this weekend, 
then slowly decay through early next week. The swell will reach
the coastline creating potentially hazardous surf. Seas will 
build to 8-10 ft, and altimter data indicates seas are highest 
SW of the Galapagos Islands.

REMAINDER OF THE AREA...

A ridge axis extends from high pressure near 32N133W to 18N113W. 
This ridge is supporting moderate trade winds across most of the 
tropical Pacific north of the ITCZ. Seas are mainly 6 to 7 ft. A 
weakening cold front is approaching the far NW part of the area. 
Trade winds will diminish slightly today as the dying front acts 
to weaken the ridge. NW swell associated with the front will 
affect the NW part with 7-8 ft seas this morning, then decay by 
tonight. Another cold front may reach 30N140W Sun night or Mon 
with another set of NW swell arriving in its wake.

Southern Hemisphere long period SW swell is crossing the equator 
E of 130W, with seas of 8-10 ft expected. Altimeter data shows 
the demarkation of seas greater than 8 ft, SW of a line from 
18N120W to 04N92W. This swell will subside across the tropics 
below 8 ft by Sun afternoon.

$$
Mundell