National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
AXPZ20 KNHC 210902
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 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 0600 UTC surface analysis and satellite imagery through
0830 UTC.

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

A surface trough extends from 07N78W to 06N111W. The ITCZ
continues from 06N111W to 04N140W. Scattered moderate convection
is noted from 00N to 08N and W of 130W. Scattered showers are
noted along the trough.

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

A surface ridge extends from a 1030 mb high pressure centered
near 40N138W 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 this 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
the 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 the week. Wave heights will be mostly
4 to 6 ft primarily in SW swell, building to 5 to 7 ft off
Ecuador today. Looking ahead, moderate to fresh gap winds may
develop in the Gulf of Papagayo by mid-week.

...REMAINDER OF THE AREA...

A 1030 mb high pressure is centered near 40N138W, 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 is supporting moderate to fresh trade winds
from 05N to 25N between 115W and 140W, where seas are in the 7-9
ft range. A frontal trough is over the NW waters from 30N134W to
27N140W. Moderate winds and seas of 5-7 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 5-6 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 today.
Looking ahead, a weak surface low will enter the north-central
portion of our waters by mid-week enhancing winds/seas.

$$
ERA