000
AXPZ20 KNHC 282037
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2035 UTC Tue Apr 28 2020

Tropical Weather Discussion for the eastern Pacific Ocean from
the Equator to 32N, east of 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
2000 UTC.

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

A surface trough extends from 06N77W to 05N80W to 08N89W. The 
ITCZ extends from 08N89W to 04N97W to 09N113W, then continues 
from 07N122W to 07N136W to 05N140W. The ITCZ is split by a 
surface trough that extends from 11N114W to 02N121W. Scattered 
moderate and isolated strong convection is occurring within 120 
nm of the trough east of 88W, and from 04N to 10N between 114W 
and 121W. Scattered moderate convection is noted within 120 nm of
the ITCZ between 92W and 105W, and between 127W and 135W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A high pressure ridge extends from near 30N132W southeastward
across the Revillagigedo Islands into the offshore waters off
southern Mexico. A surface trough is analyzed over the Gulf of 
California. Recent scatterometer data show moderate winds over 
the far outer waters west of Guadalupe Island, as well as in the 
Tehuantepec region. Elsewhere, gentle winds prevail across the 
forecast waters under a relatively weak pressure pattern.

A high pressure ridge will persist well offshore of Baja 
California and southern Mexico through this weekend. Strong gap 
winds are expected in the Tehuantepec region Thu night into Fri 
in the wake of a Gulf of Mexico cold front. Fresh sets of NW 
swell will build seas across the Baja California waters Thu 
night through this weekend.

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

Earlier scatterometer passes showed fresh gap winds over the
Papagayo region. Moderate to fresh southerly winds and scattered
thunderstorms are associated with the trough referenced above 
that extends across the waters south of Costa Rica and Panama. 
Elsewhere, gentle winds are occurring between Ecuador and the
Galapagos Islands, with 3-5 ft seas in S swell.

Fresh to strong gap winds will pulse over the Papagayo region 
through Sun. Moderate northerly winds will pulse across the Gulf
of Panama for the next several days. Otherwise, tranquil marine 
conditions will persist through the upcoming weekend. 

REMAINDER OF THE AREA...

A high pressure ridge extends SE from near 30N132W across the
northern waters. Moderate to locally fresh NE to E winds are
noted in recent scatterometer data between this ridge and the
ITCZ. Elsewhere, moderate SE to S winds prevail south of the
ITCZ, with some locally fresh winds noted in scatterometer data
near the ongoing convection roughly between 110W and 120W. Seas
are to 8 ft in S swell near 03S120W, and less than 8 ft elsewhere
across the forecast waters.

High pressure will dominate the northern waters through this
weekend. A set of NW swell will move into the far NW portion Wed
and quickly decay while moving SE through Thu. Another set of 
fresh NW swell will propagate southward into the waters west of 
Baja California Thu, building seas to 8-10 ft east of 125W by 
Fri. Looking ahead, winds and seas may increase offshore of Baja
California Norte late Sun and Sun night as high pressure 
strengthens NW of the region.

$$
B Reinhart