000
AXPZ20 KNHC 191549
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1451 UTC Sun Apr 19 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 1200 UTC surface analysis and satellite imagery through
1440 UTC.

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

A surface trough extends from low pres 1012 centered over northern
Colombia near 10N72W to 04N81W to 07N90W to low pres 1011 mb near
06.5N96W to 05.5N116W. The ITCZ continues from 05.5N116W to
beyond 05N140W.

Numerous moderate and scattered strong convection is seen from 
04N to 05N between 127W and 130W. Scattered moderate and isolated
strong convection is found elsewhere from 03N to 07N between 
127W and 140W. Scattered moderate and isolated strong convection
is present within 90 nm either side of a line from 0.5N92W to 
07.5N95.5W. Scattered moderate convection is taking place
elsewhere from 03N to 10N between 93W and 101W. Scattered
moderate convection is observed from 09N to 12N between 100W and
115W. Scattered moderate convection is occurring within 90 nm
either side of a line from 03.5N111W to 00N132W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A ridge extends from 1023 mb high pres centered near 27N132W to S
of Acapulco Mexico near 15N100W. A surface trough runs along the
length of the Gulf of California. The pressure gradient between 
these features is supporting moderate to locally fresh winds
along the W coast of the Baja Peninsula, including Cabo San Lucas.
Moderate to locally fresh winds were also noted near and S of 
Cabo Corrientes. Light to gentle winds prevail elsewhere across 
the forecast waters. Seas are in the 5 to 7 ft range off Baja 
California Norte, and 4 to 5 ft elsewhere across the open 
forecast waters. Seas ranging between 1 and 2 ft are found in 
the Gulf of California.

A high pres ridge W of Baja California will weaken through Mon 
evening in advance of a cold front expected to cross northern 
Baja Mon evening. The ridge will rebuild Mon night through Wed, 
then remain in place through Thu night. Winds W of Baja 
California Norte will strengthen accordingly Mon night through 
Wed. Fresh NW swell will propagate SE offshore of Baja California
and cause seas to build to between 7 and 9 ft Tue through Thu.

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

The pressure gradient between high pressure N of the area and a 
surface trough situated near 05N will support moderate winds the
Papagayo region today. Light to gentle winds will prevail 
elsewhere, except moderate winds across the Gulf of Panama region
this morning. Moderate SW swell will propagate into the waters 
between Colombia and Ecuador through early Mon. Seas are in the 
4-6 ft range over and downstream of the Gulf of Papagayo region, 
and 3-5 ft elsewhere, except across the waters between Colombia 
and Ecuador where seas are building to 5-7 ft in moderate SW 
swell.

Fairly tranquil marine conditions are anticipated for the
remainder of this week.

REMAINDER OF THE AREA...

A ridge extends from 1023 mb high pres centered near 27N132W to 
S of Acapulco near 15N100W. The pressure gradient between this 
area of high pressure and lower pressure in the vicinity of the 
ITCZ is supporting gentle to moderate winds N of the ITCZ to 20N 
and W of 120W. Low pressure measuring 1011 mb is embedded in the
ITCZ near 06.5N96W. Gentle to moderate winds are present in the 
vicinity of the low. Light to gentle winds prevail elsewhere.

The area of high pres will weaken through Mon in response to low
pres moving over the NE Pacific. This will diminish tradewinds 
through the early part of the upcoming week. High pres will
rebuild N of the forecast area after low pres over the NE Pacific
moves E, strengthening tradewinds W of 130W. The low embedded in
the ITCZ will shift WNW during the next few days. Gentle to 
moderate winds are expected to prevail within 120 nm of the 
center of the low. Light to gentle winds are expected elsewhere 
for the next several days.

Long period NW swell will combine with NE wind waves and cause
seas to build to between 8 and 9 ft N of 10N and W of 130W Mon. 
The area of 8 ft seas will expand E to 120W on Tue and Wed 
before starting to recede W Thu. N swell will propagate into the
waters N of 25N and E of 125W, causing seas to build to between 8
and 9 ft Wed and Thu.

$$
CAM