000
AXPZ20 KNHC 121407
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Mon Apr 12 2021

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 1200 UTC surface analysis and satellite imagery
through 1500 UTC.

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

A surface trough extends from 08N83W to 05.5N90W to 06N101W. The
ITCZ continues from 06N101W to 07N113W to 02N130W to beyond 
02N140W. Scattered moderate convection is noted from 03N TO 
07N between 110W and 125W, and from 01N to 09N between 130W and 
140W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A ridge of high pressure prevails west of the Baja California,
and extends southeast to offshore of Cabo Corrientes along 112W.
The pressure gradient between the ridge and a trough over Mexico
is supporting fresh northerly winds off of Baja California Norte,
and moderate winds off Baja California Sur. Light to gentle 
westerly winds prevail elsewhere across the offshore waters. Seas
are in the 5-9 ft range west of Baja California, 3-5 ft over the
remainder of the open waters off Mexico, and 1-3 ft over the 
Gulf of California. 

Moderate to fresh NW winds will prevail west of Baja California 
Norte through Tue as the ridge persists. Increased NW swell off 
Baja California Norte will prevail into Wed, peaking at 7-11 ft 
Mon morning, highest across the outer waters. Gentle to moderate 
winds are expected elsewhere into Wed. Winds and seas are 
expected to diminish slightly areawide Wed through Fri as the 
high pressure weakens.

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

Light to gentle mostly onshore winds prevail across the forecast
area, with seas in the 3-5 ft range. Little change in wind and 
wave conditions are expected into Tue, before moderate offshore 
gap winds begin across the Papagayo region. Moderate sized SW
swell crossing the equator tonight will move through the 
offshore waters Mon night through Thu to raise seas slightly.

REMAINDER OF THE AREA...

Deep layered low pressure persists W of the NW waters between
145W and 150W. This is producing moderate SE winds and seas of 6
to 7 ft across the far NW waters from 27N to 30N. High pressure 
extends southward across the northern waters between 118W and
140W. This is producing a modest pressure gradient over the 
forecast waters south of the ridge. Moderate winds and seas of 
5-7 ft prevail there. Little significant change is expected the 
next couple of days. High pressure will weaken and shift into 
the northern waters Wed through Thu, and slightly strengthen 
trade winds north of the ITCZ. Northerly swell will propagate 
south of 30N across the waters between 118W and 130W through Wed.
Seas over this area will build to around 9-11 ft early this
morning then gradually diminish to 5-8 ft by late Tue.

$$
AL