000
AXPZ20 KNHC 231723
TWDEP
Tropical Weather Discussion...Update
NWS National Hurricane Center Miami FL
1605 UTC Tue Apr 23 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 1200 UTC surface analysis and satellite imagery through
1600 UTC.
Updated Offshore Waters and Remainder of the Area sections
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
An equatorial trough extends from near the Panama-Colombia border
to 08N91W. An ITCZ continues from 08N91W across 06N115W to beyond
03N140W. Scattered moderate to isolated strong convection is
seen near the ITCZ from 03N to 05N between 134W and 137W.
Scattered moderate convection is found south of the trough from
03N to 06N between 84W and 88W, and near the ITCZ from 03N to
06N between 101W and 117W.
...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...
A surface ridge extends from a 1018 mb high pressure near 27N128W
to near the Revillagigedo Islands. The pressure gradient between
the ridge and a trough that is over the Gulf of California is
supporting gentle to locally moderate northerly winds and seas of
4 to 6 ft west of Baja California and near the Revillagigedo
Islands. The pressure gradient between high pressure along the
eastern slopes of the Sierra Madre Oriental Mountains of Mexico
and the equatorial trough is supporting fresh to strong winds and
6 to 9 ft seas in the Gulf of Tehuantepec and nearby waters.
Moderate with locally fresh southerly winds and seas at 3 to 5 ft
are present at the northern Gulf of California. Light to gentle
winds with 1 to 3 ft seas prevail elsewhere in the Gulf of
California. Light to gentle with locally moderate N to NE winds
and seas at 3 to 6 ft in moderate NW swell are found across the
offshore waters of central and southern Mexico.
For the forecast, fresh to strong gap winds with rough seas in
the Gulf of Tehuantepec will subside to between gentle and
moderate with moderate seas this afternoon. Moderate to fresh
southerly gap winds at the northern Gulf of California will
become fresh to strong during the nighttime and early morning
hours tonight through Fri night. In longer term, strong high
pressure building eastward from the East Pacific will cause
northerly winds west of Baja California and near the
Revillagigedo Islands to become moderate to fresh along with
building seas by Thu night..
...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA,
AND WITHIN 750 NM OF ECUADOR
Convergent easterly winds are triggering scattered showers and
isolated thunderstorms at the southern offshore waters of
Guatemala and El Salvador. Refer to the Monsoon Trough/ITCZ
section for additional convection in the region. Moderate to
fresh NE to E winds and seas at 5 to 7 ft are occurring at the
Papagayo region. Gentle to moderate N to NE to E winds and 4 to 6
ft seas are found at the offshore waters of Nicaragua, Costa
Rica, Panama and Colombia. Gentle to moderate southerly winds and
4 to 7 ft seas in moderate swell prevail off Ecuador and near the
Galapagos Islands.
For the forecast, moderate NE to E winds at the Gulf of Papagayo
region will pulse to between fresh and strong during the
nighttime and early morning hours through Thu night. Gentle winds
at the Gulf of Panama will also become moderate with locally
fresh during this same time period. Rough seas off Ecuador will
gradually subside to moderate by Thu. Elsewhere, light to gentle
winds will continue through the weekend.
...REMAINDER OF THE AREA...
A 1018 mb high near 27N128W is promoting light to gentle winds
and 4 to 7 ft seas in moderate northerly swell north of 15N
between 120W and 130W. Moderate with locally fresh N to ENE winds
and seas at 5 to 7 ft are seen from the ITCZ to 15N west of 105W,
and north of 15N west of 130W. Gentle to moderate E to SSE winds
and seas of 4 to 6 ft prevail near and south of the ITCZ.
For the forecast, trade winds from 15N to 21W and west of 125W
will increase to mainly fresh by Thu as stronger high pressure
builds across the region. Seas under these winds are expected to
build to between 7 and 9 ft. N to NE winds north of 15N between
120W and 130W will become moderate to fresh by Fri along with
building seas. Little change elsewhere through this weekend.
$$
Chan
