000
AXPZ20 KNHC 050320
TWDEP 

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

...SPECIAL FEATURES...

The remnant low of for tropical cyclone Nana is moving across 
the waters southwest of the Gulf of Tehuantepec near 15N97W. 
Scattered moderate convection is noted within 75 nm of the low 
center, and scattered moderate to strong convection is displaced 
west-northwest of the low, from 13N to 18N between 99W and 102W. 
Conditions are expected to be only marginally conducive for 
further development during the next couple of days, 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 few days. Please refer to the 
latest eastern north Pacific Tropical Weather Outlook for more 
information.

...TROPICAL WAVES...

A tropical wave axis is near 84W north of 01N, moving west at 10 
to 15 kt. Scattered moderate convection is noted from 07N to 11N 
between 83W and 86W. 

A tropical wave axis is near 118W from 01N to 19N, moving west 
at 15 kt. No significant convection is associated with this wave.

A tropical wave axis is near 139W from 01N to 18N, moving west 
at 15 kt. No significant convection is associated with this wave.

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

The monsoon trough extends from 12N87W to low pressure near 
15N97W to 12N101W to 11N120W to 09N130W to 10N140W. 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 will build across the Sierra Madre Oriental this 
weekend, and 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 this weekend 
into early next week. 

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