000
AXPZ20 KNHC 090300
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 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 0000 UTC surface analysis and satellite imagery through 
0300 UTC.

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

A surface trough extends from the Panama/Colombia border near 
07N78W to 08N100W to 08N122W. The ITCZ extends from 07N124W to 
09N140W. Scattered moderate isolated strong convection is noted 
from 05N to 09N between 84W and 93W, and from 04N to 11N between 
111W and 123W.

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.

Northerly winds at fresh to near gale force across the Gulf of 
Tehuantepec region will return late Sat night through Mon night.

A NW-SE oriented ridge axis extends southward between 122W and 
145W. Gentle to moderate winds were noted on scatterometer data 
earlier across the entire region. Long period southerly swell is 
propagating through the waters and will impact the coastline of 
Mexico this weekend, creating potentially hazardous surf. Seas 
will be 6 to 9 ft. 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.

Ggentle to moderate winds will prevail 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 be highest SW of the Galapagos Islands.

REMAINDER OF THE AREA...

A NW to SE oriented 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 5 to 8 ft. Trade winds will diminish slightly 
overnight as the ridge weakens due to a decaying cold front 
which is just NW of 30N140W. NW swell associated with the front 
will reach 30N140W tonight with seas of 7 to 8 ft, then decay on 
Sat. 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 to 10 ft expected, reaching as far 
north as 15N115W tonight. This swell will subside across the 
tropics below 8 ft by Sun afternoon.

$$
Mundell