000
AXPZ20 KNHC 072143
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2017 UTC Mon Sep 7 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 1800 UTC surface analysis and satellite imagery through
2115 UTC.

...TROPICAL WAVES...

A tropical wave extends N of 03N into southern Mexico with axis
near 98W, moving west at 10 kt. Scattered moderate convection is 
from 09N to 15N between 92W and 104W.

A tropical wave extends from 03N to 18N with axis near 136W, 
moving west at 10 to 15 kt. Scattered moderate convection is from
07N to 11N W of 130W.

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

The monsoon trough extends from 11N86W to 14N100W to 18N107W to 
14N120W to 10N130W to 11N140W. Scattered moderate convection is
from 05N to 13N E of 93W, from 12N to 17N between 103W and 111W,
and from 07N to 12N between 120W and 130W. A 1008 mb low, 
remnants of Julio are near 19N115W. Farther south another 1008 
mb low is near 18N113W. Scattered moderate convection is from 
12N to 21N between 111W and 121W. 

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A 1008 mb low, remnant of Julio is centered near 19N115W. An
earlier scatterometer pass showed light to moderate cyclonic
winds near the low center. Continued weakening is forecast and 
the remnants of Julio are expected to be absorbed by another 1008
mb low near 18N113W this evening. Otherwise, mainly light to 
gentle variable winds and seas in the 4-6 ft range will prevail 
across the remainder offshore waters of Baja California through 
Fri. 

A surface trough along the western Bay of Campeche in the Gulf of
Mexico will support moderate to locally fresh northerly winds in
the Gulf of Tehuantepec through Mon night with seas to 7 ft.
Light to gentle variable winds will dominate this region
thereafter through Fri evening as return flow establishes N of
the area.

A center of low pressure between southern California and Arizona
will deepen tonight and will support the continuation of fresh 
to locally strong southerly winds across the northern Gulf of 
California through Tue. On Tue night, a ridge building over the
Great Basin will then support NW fresh to near gale force winds
over the northern half of the Gulf of California. This winds will
gradually diminish through Wed night. Seas are forecast to build
to 8 ft during this period.

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

Moderate to locally fresh SW winds will prevail S of the monsoon
trough through the forecast period while light and variable 
winds are expected N of it. Seas will be in the 6 to 8 ft range 
in long-period southerly swell.

REMAINDER OF THE AREA...

Moderate to fresh southwesterly flow will prevail south of the 
monsoon trough between 110W and 130W through Wed night being
enhanced by a broad area of low pressure that will linger near
the southern Baja California Sur offshore waters. Winds will
decrease to gentle to moderate thereafter through Fri. Seas in
this region will fluctuate between 7 to 8 ft.  

Otherwise, weak surface ridging will dominate the waters N of 
20N W of 120W along with light to moderate NE to E winds.

$$
Ramos