000
AXPZ20 KNHC 042124
TWDEP
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Sat Apr 4 2026
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 1800 UTC surface analysis and satellite imagery through
2100 UTC.
...SPECIAL FEATURES...
Gulf of Tehuantepec Gale Warning: The next gap wind event across the
Tehuantepec region is expected by Mon morning as a ridge builds
across the eastern slopes of the Sierra Madre Mountains in Mexico,
behind a cold front moving across the Gulf of America. Winds are
forecast to increase to 20 to 30 kt, with seas building to 8 ft
by Sun night. Then, winds will further increase to gale force by
Mon morning, with seas building to 12 or 13 ft on Mon night.
Gusty winds to near storm force may occur. These marine conditions
are forecast to persist through Tue morning. Seas generated from
this gap wind event will spread well away from the Tehuantepec
area, with seas 8 ft or greater reaching as far south as 11N Mon
night into Tue.
Climatologically, the first gale-force event of the season occurs
in mid-October, with the final gale-force event occurring in late
March or early April. Occasionally, gale-force events may occur
as early as September, and as late as May.
Please read the latest High Seas Forecast issued by the National
Hurricane Center at website:
https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
A surface trough extends from 08N78W to 09N86W to 06N97W. The ITCZ
stretches from 06N97W to 06N115W to 03N140W. As is typical for this
time of the year, a second ITCZ is located south of the Equator
and runs from 04S95W to beyond 02S120W. Scattered moderate convection
is observed from 02N to 08N W of 115W. Similar convective activity
can be found from 05N to 09N between 83W and 88W.
...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...
Strong high pressure over the Great Basin supports moderate to fresh
NW winds and seas of 3 to 5 ft in the northern Gulf of California.
Gentle to moderate NW winds are present elsewhere across the Gulf.
Moderate to locally fresh NW winds are blowing in the offshore waters
of Baja California. Seas in these waters are 5 to 8 ft, primarily
in NW swell. In the remainder of the Mexican offshore waters, including
the Gulf of Tehuantepec, light to gentle winds and moderate seas in
S swell prevail.
For the forecast, a Gale Warning is in effect for the Gulf of Tehuantepec.
Please, see the Special Features section for more details. Meanwhile,
NW swell producing locally rough seas off Baja California Norte will
diminish late today. Gentle to moderate winds and slight seas will
prevail in the Gulf of California tonight through midweek next week.
Moderate to locally fresh NW winds and moderate seas are expected off
Baja California through the forecast period.
....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA,
AND WITHIN 750 NM OF ECUADOR...
A strong high pressure located near Bermuda continues to force
fresh to strong easterly trade winds and moderate seas across the
Gulf of Papagayo region, extending downstream to 88W. Farther
east, gentle to moderate northerly winds and moderate seas are
found in the Gulf of Panama. Meanwhile, light to gentle winds and
moderate seas dominate the remainder of the offshore forecast
waters.
For the forecast, fresh to locally strong gap winds are expected
during the nighttime and early morning hours in the Papagayo
region and downwind to about 88W through the forecast period.
Moderate to fresh northerly winds are expected in the Gulf of
Panama tonight. Then, mainly gentle to moderate N winds are
expected through the middle of the next week. Residual southerly
swell will maintain moderate seas between Ecuador and the Galapagos
Islands through this weekend while gradually subsiding.
...REMAINDER OF THE AREA...
Abundant cloudiness, with possible showers, is noted in the NW
corner of the forecast region associated with a surface trough
and strong upper-level winds. A ridge dominates the remainder of
the area N of 15N and W of 110W. The pressure gradient between
this system and lower pressures in the deep tropics results in
moderate to fresh easterly winds and seas of 6 to 8 ft north of
the ITCZ to about 15N and west of 110W. Elsewhere, moderate or
lighter winds and moderate seas are prevalent.
For the forecast, a ridge will support moderate to locally fresh
easterly winds and moderate to locally rough seas across the
trade wind zone into the middle of next week. A cold front is
forecast to reach 30N140W by Sun night, and extend from 30N137W
to 24N140W by Mon morning. Gentle to moderate winds are forecast
on either side of the front. Seas will briefly build to 9 ft
behind the front Mon night into Tue.
$$
GR
