000
AXPZ20 KNHC 220354
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Fri Apr 22 2022

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
0345 UTC.

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

A surface trough extends from the border between Panama and
Colombia to 09N92W to 09N104W to 07N116W. where latest
scatterometer data indicates that it transitions to the ITCZ
and continues to 05N129W to beyond 07N140W. Scattered moderate 
to isolated strong convection is noted from 04N to 07N between 
97W-100W. Scattered moderate convection is seen from 04N to 08N 
between 93W-96W, and within 180 nm south of trough between
102W-105W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO

A ridge dominates the offshore forecast waters of Baja 
California. The pressure gradient between the ridge and 
relatively lower pressures over Mexico is supporting fresh to 
locally strong NW winds over the waters mainly N of Cabo San 
Lazaro. Seas associated to these winds are in the 5-7 ft range. 
Gentle to moderate NW-N winds remain elsewhere over the waters 
west of the Baja California peninsula. Light and variable winds 
are over the remainder of the offshore waters, including the 
Gulf of California. Areas of haze are offshore the coast of 
Mexico south of Cabo Corrientes due to nearby persistent 
agricultural fires.

For the forecast, fresh to locally strong NW to N winds will 
pulse offshore Baja California and N of Cabo San Lazaro through 
Fri, with fresh to strong NW winds then prevailing across most of
the offshore waters of Baja California Fri night into Sat. Long-
period NW swell will reach the offshore waters of Baja 
California N of Punta Eugenia on Fri, building seas to 13 ft by 
Fri evening. This swell will propagate southeastward, with seas 
greater than 8 ft reaching the Revillagigedo Islands by Sat 
evening. 

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

Gentle to moderate winds prevail over the waters south of 05N, 
with light to gentle winds north of 05N. Seas are 4-6 ft in S to 
SW swell. Haze is possible over the offshore waters of Guatemala 
and El Salvador due to nearby persistent agricultural fires.

For the forecast, long-period S to SW swell will continue to 
propagate across the region, with a new set of southerly swell 
reaching the waters between Ecuador and the Galapagos Islands on 
Fri. This swell will raise seas slightly over the Central 
American offshore waters Fri night and Sat, before subsiding Sat 
night and into early next week.

REMAINDER OF THE AREA

High pressure continues over the waters N of 20N, while a weak 
cold front has moved over the NW part of the area from 30N129W 
to west of 28N140W. The pressure gradient between the area of 
high pressure and lower pressure in the vicinity of the ITCZ is 
supporting moderate trade winds N of the ITCZ to near 20N and 
west of 120W, except behind the front where fresh NW winds are 
present. Gentle to moderate winds prevail elsewhere. NW swell is 
propagating across the NW waters, with seas in the 8-12 ft 
range, except 12-16 ft to the northwest of a line from 30N129W 
to 26N140W. Seas of 5-7 ft are elsewhere.

For the forecast, the long-period NW swell will continue to 
propagate southeastward across the forecast waters. Seas greater 
than 8 ft will cover much of the forecast waters west of 105W by 
Sun night before starting to subside. The cold front will weaken 
as it reaches the NE waters by early this evening.

$$
Aguirre