000
AXPZ20 KNHC 311959
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Tue Aug 31 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 1800 UTC surface analysis and satellite imagery through
2100 UTC.

...TROPICAL WAVES...

The axis of a tropical wave is near 92W N of 02N, moving W at 10
kt. Associated convection is discussed in the monsoon trough
section below.

The axis of a tropical wave is near 107W, N of 01N, moving W at 
10 to 15 kt. Associated convection is discussed in the monsoon 
trough section below.

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

The monsoon trough extends from 11N86W to 15N105W to 10N140W. 
Scattered moderate isolated strong convection is noted from 05N 
to 17N between 86W and 102W, and from 04N to 14N between 106W and
115W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

The remnants of Nora persist across western Mexico. Scattered 
moderate isolated strong convection extends across the entrance 
and southern waters of the Gulf of California from 22.5N to 25N.
Meanwhile scattered moderate to strong convection is ongoing 
across much of Sonora south of 30.5N and extends into the waters 
of the Gulf. This heavy rain associated with Nora's remnants is 
expected to continue today across Sinaloa and Sonora. This rain 
may result in life-threatening flash flooding and mudslides. 
Rainfall from the remnants of Nora is also likely to spread into 
the southwestern U.S. and central Rockies beginning Wed, bringing
the potential for flash flooding to the region. Refer to 
statements issued by your local or national meteorological agency
for details.

Moderate to fresh S-SW winds are noted across most of the Gulf 
of California N of 26N, where seas are 3 to 5 ft. 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 fresh S-SW winds south of the monsoon trough. Seas 
are 4 to 7 ft across the offshore waters.

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 26N126W to 25N133W with moderate 
to fresh N-NE winds, and seas of 8 to 9 ft, to the north of this
trough. These seas will decay midweek. 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.

$$
AL