171 
AXPZ20 KNHC 020253
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Thu Sep 2 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
0220 UTC.

...TROPICAL WAVES...

The axis of a tropical wave is near 100W N of 02N, 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 low pres near 13.5N83.5W 1008 to
16N102W to 10.5N132W. The ITCZ continues from 10.5N132W to 10N140W.
Scattered moderate isolated strong convection is noted from 09N 
to 15.5N between 91W and 107W. Scattered moderate convection is 
noted from 05N to 90N between 120W and 136W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Weak high pressure prevails west of Baja California. Gentle to 
moderate southerly winds prevail across all but the entrance to 
Gulf of California. Fresh westerly gap winds are occurring 
across the prominent gaps of north and central portions of the 
Gulf. Seas are generally 2 to 4 ft across the basin. Gentle to 
locally moderate N to NW winds prevail west of Baja California. 
Fresh winds continue near the coast along Punta Abreojos but 
will diminish a few hours after sunset. Light to gentle winds 
dominate the remainder of the offshore waters. Seas of 4 to 6 ft 
in mixed long period swells are noted across the open waters off 
Mexico.

A weak high pressure ridge will prevail west of Baja California 
through the week with fairly tranquil marine conditions 
anticipated. Afternoon heating will produce fresh NW winds along
portions of the Pacific coasts of Baja each afternoon. 

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

Gentle winds prevail north of the monsoon trough, with gentle to
locally moderate W to SW winds south of the monsoon trough. Seas
are 4 to 7 ft across the offshore waters.

Little change in marine conditions are expected the next few
days. SW swell will propagate into the waters between Colombia
and the Galapagos Islands this weekend, increasing wave heights 
to near 8 ft. 

REMAINDER OF THE AREA...

A surface trough extends from 32N120W to 24N128W with moderate 
to fresh N-NE winds and seas of 7 to 8 ft prevailing to the 
north of this trough. Winds and seas will decrease through the 
end of the week 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 NE 
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 these marine conditions is forecast through the
remainder of the week.

$$
Stripling