000
AXPZ20 KNHC 010330
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Wed Sep 1 2021

Tropical Weather Discussion for the eastern Pacific Ocean from
03.4S to 30N, east of 120W including the Gulf of California, and
from the Equator to 30N, between 120W and 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
0030 UTC.

...TROPICAL WAVES...

The axis of a tropical wave is near 95W N of 02N, moving W at 10
kt. Associated convection is discussed in the monsoon trough 
section below.

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

The monsoon trough extends from low pres near 12N80W 1009 mb to 
11.5N86W to 15.5N105W to 11N140W. Scattered moderate to strong 
convection is noted N of 06N E of 96W, from 08N to 15.5N between
96W and 110W, and from 06N to 10N between 111W and 126W. 

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Midday scatterometer data showed fresh SE winds across the
northern Gulf of California. However, winds are assumed to have
diminished, and are moderate southerly across all but southern
portions of the Gulf. Seas are generally 3-4 ft except 4 to 5 ft
in southerly swell across south portions. Otherwise, weak high 
pressure prevails west of Baja California with gentle to moderate
NW winds. Gentle W-NW winds dominate the remainder of the 
offshore waters, with seas of 4 to 7 ft in mixed long period 
swells.

High pressure will prevail west of Baja California through the 
week with fairly tranquil marine conditions anticipated. 

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

Light to gentle winds prevail north of the monsoon trough, with 
moderate to locally fresh S-SW winds south of the monsoon 
trough. Seas are 4 to 7 ft across the offshore waters, except for
a few small areas of seas to 8 ft within the fresh SW winds.

Mainly gentle winds will prevail north of the monsoon trough, 
with moderate to fresh offshore pulses expected nightly in the 
Papagayo region. Moderate to fresh S to SW winds south of the 
monsoon trough will prevail through midweek, diminishing some 
thereafter. 

REMAINDER OF THE AREA...

A surface trough extends from 29N123W to 24.5N133W with moderate
to fresh N-NE winds occurring west of the trough, and seas of 7 
to 9 ft, to the north of this trough. Winds and seas will 
decrease through midweek as the trough shifts slowly SE and
dissipates. Otherwise, broad and weak high pressure dominates 
the waters north of the monsoon trough, along with gentle to 
moderate trades. Gentle to moderate southerly winds prevail south
of the monsoon trough, moderate to locally fresh east of 125W. 
Seas of 5 to 8 ft in mixed long period swell dominate the waters.
Little overall change in marine conditions is forecast through 
the week.

$$
Stripling