000
AXPZ20 KNHC 211433
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Thu Apr 21 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 1200 UTC surface analysis and satellite imagery through
1430 UTC.

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

A surface trough extends from 07N78W to 06N85W to 08N108W to
07N126W. The ITCZ continues from 07N126W to 06N140W. Scattered
moderate isolated strong convection was noted from 04N to 09N
between 83W and 103W. Scattered moderate convection is noted from
02N to 08N between 107W and 117W. 

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 to N winds prevail over the waters west of
Baja California S of Cabo San Lazaro while light and variable 
winds are over the remainder of the Mexican offshore waters. In 
the Gulf of California, SE-S winds are noted, except for light 
and variable winds over the northern section. 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 SE, 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 07N,
with light to gentle winds north of 07N. 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 through Mon night.

REMAINDER OF THE AREA

High pressure covers the waters N of 20N. A dissipating cold
front extends from 30N130W to 27N140W. The pressure gradient
between the area of high pressure and lower pressure in the
vicinity of the ITCZ is supporting moderate trades north of the
ITCZ to near 20N and west of 120W. Gentle to moderate winds
prevail elsewhere. NW swell is propagating across the NW waters,
with seas in the 8-15 ft range. Seas of 5-7 ft prevail elsewhere.

For the forecast, the cold front will dissipate today. 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. 

$$
AL