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Eastern North Pacific Tropical Weather Discussion (Text)



011 
AXPZ20 KNHC 210248
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Sun Apr 21 2024

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
0230 UTC.

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

A surface trough extends from 08N78W to 06N110W. Another trough
extends along 118W. The ITCZ continues from 06N119W to 06N127W. A
trough extends along 131W. The ITCZ resumes from 05N134W to 
beyond 04N140W. Scattered moderate convection is noted from 00N 
to 07N and W of 134W. Scattered showers are noted along the
troughs. 

...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A surface ridge extends from a 1028 mb high pressure centered
near 37N142W SE to the Revillagigedo Islands. The pressure 
gradient between this area of high pressure and a trough over the
Gulf of California is supporting moderate winds west of the Baja
California peninsula. Light to gentle winds prevail elsewhere. 
Seas are in the 5-6 ft range over the open waters off Mexico, and
1-3 ft over the Gulf of California. 

For the forecast, gentle to moderate winds winds and moderate 
seas will persist west of the Baja California peninsula through 
the middle of next week. Fresh to strong gap winds will develop 
in the Gulf of Tehuantepec early on Mon, and continue through 
Tue before diminishing. Seas will peak near 9 ft Mon night with 
these gap winds. Elsewhere, light to gentle winds and moderate 
seas will prevail. 

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

Light to gentle winds, and seas of 5-6 ft prevail across the 
discussion waters.

For the forecast, light to gentle breezes will persist across the
region into the middle of next week. Wave heights will be mostly
4 to 6 ft primarily in SW swell, building to 5 to 7 ft off
Ecuador Sun. Looking ahead, moderate to fresh gap winds may
develop in the Gulf of Papagayo by mid-week.

...REMAINDER OF THE AREA...

A 1028 mb high pressure is centered near 37N142W, with ridge 
extending SE to near the Revillagigedo Islands. The pressure 
gradient between the area of high pressure, lower pressure in the
vicinity of the ITCZ and embedded surface troughs along it from 
10N128W to 03N128W is supporting moderate to fresh trade winds 
from 05N to 20N between 120W and 140W, where seas are in the 7-8 
ft range. A frontal trough is over the NW waters from 30N133W to
26N140W. Moderate winds and seas of 5-6 ft are west of the 
frontal boundary. Light winds are in the vicinity of the high 
center, with light to gentle winds noted elsewhere across the 
discussion waters. Aside from the area where fresh trades are, 
seas are in the 5-7 ft range. 

For the forecast, wind speeds and wave heights will remain 
similar into early next week, with an area of 8 ft seas 
persisting roughly from 08N to 12N W of 130W with N swell mixing
with NE wind waves. The frontal trough will dissipate this 
weekend.

$$
ERA


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Page last modified: Sunday, 21-Apr-2024 02:48:51 UTC