000
AXPZ20 KNHC 050924
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Sat Sep 5 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.

...SPECIAL FEATURES...

The remnant low of tropical cyclone Nana is moving across the 
waters west of the Gulf of Tehuantepec near 15N100W. Scattered 
moderate convection is noted within 75 nm of the low center, and 
scattered moderate to strong convection is displaced northwest 
of the low from 14N to 20N between 101W and 105W. Conditions are 
expected to be only marginally conducive for further development 
during the day or so, but only a small increase in thunderstorm 
activity could result in the formation of a tropical depression. 
This system is expected to move generally west-northwestward, 
near or along the southern coast of Mexico during the next two 
days. Please refer to the latest eastern north Pacific Tropical 
Weather Outlook for more information.

...TROPICAL WAVES...

A tropical wave axis is near 86W north of 01N, moving west at 15 
kt. Scattered moderate isolated strong convection is noted from 
10N to 14N between 87W and 91W. 

A tropical wave axis is near 119W from 01N to 19N, moving west 
at 10 to 15 kt. Scattered moderate convection is noted from 09N 
to 12N between 98W and 125W.

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

The monsoon trough extends from 12N87W to low pressure near 
15N100W to 11N113W to 11N122W to 09N127W to 08N140W. Scattered 
moderate convection noted from 08N to 12N between 90W and 123W. 

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Please see Special Features above for information on remnants of 
tropical cyclone Nana.

High pressure building across the Sierra Madre Oriental this 
weekend will tighten the gradient between the ridge and the 
eastern Pacific monsoon trough, and support a strengthening of 
northerly gap winds over the Gulf of Tehuantepec tonight 
through Monday. 

Elsewhere, gentle to moderate NW winds prevail across the waters
north of 20N with 5 to 6 ft seas west of the Baja California 
peninsula. Little change in marine conditions is expected during 
the next few days. 

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

Moderate to fresh SW winds prevail S of the monsoon trough. Seas
are 7 to 9 ft in long-period southerly swell. Moderate to fresh 
SW winds and southerly cross-equatorial swell will persist south 
of the monsoon trough the next several days.

REMAINDER OF THE AREA...

Gentle to moderate winds prevail north of the monsoon trough. 
Moderate to fresh southerly flow persists south of the monsoon 
trough, with areas of 7 to 8 ft seas. Long-period southerly 
swell is spreading northward across the region E of 120W, with 8 
to 9 ft seas south of the equator. This swell will continue 
propagating northward through Mon.

$$
Mundell