000
AXPZ20 KNHC 291520
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1520 UTC Wed Apr 29 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 1200 UTC surface analysis and satellite imagery through
1500 UTC.

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

A surface trough extends from 07N78W to 05N80W to 07N87W to 
08N106W. The ITCZ extends from 08N106W to 09N116W, then continues
from 05N128W to 04.5N140W. Scattered moderate isolated strong 
convection is occurring within 90 nm of the trough east of 88W, 
from 03N to 08N between 95W and 101W, and within 120 nm of a 
trough that extends from 13N117W to 04N127W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure centered near 32N133W this morning extends a ridge
SE across the Revillagigedo Islands and offshore of southern
Mexico. A weak low pressure trough persists across the Gulf of
California. Gentle winds prevail across much of the forecast
waters, with moderate winds south of Los Cabos and along the
coast of southern Mexico. Seas are generally running 4-7 ft in NW
swell over the northern waters, and 3-5 ft in the waters south of
Cabo Corrientes. 

The offshore high pressure ridge will persist through Sun. 
Strong to near gale force northerly winds are expected in the 
Tehuantepec region late Thu into Fri. NW swell will build the 
seas west of Baja California Thu night through Sat. Winds and
seas will increase offshore of Baja California Norte late Sun
through Sun night as high pressure strengthens NW of the area.

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

A weak pressure pattern prevails across the offshore waters this
morning. Fresh to strong winds in the Papagayo region are likely
producing 5-7 ft seas downstream of the Gulf of Papagayo. 
Moderate to locally fresh southerly winds are occurring south of
a trough that extends westward from the coast of Colombia across
the offshore waters. Scattered showers and thunderstorms continue
on either side of this trough over the Costa Rica and Panama 
offshore waters. 

Fresh to occasionally strong gap winds will pulse over the 
Papagayo region through Sun. Elsewhere, relatively tranquil 
marine conditions will persist through the upcoming weekend.

REMAINDER OF THE AREA...

A ridge extends southward across the northern waters from high 
pressure centered near 32N133W this morning. Moderate trades
prevail north of the ITCZ to roughly 20N, west of 120W. A surface
trough that extends from 13N117W to 04N127W is associated with
locally fresh winds and seas to 8 ft, based on 12 UTC altimeter 
data. Altimeter data also shows a small area of seas to 8 ft in
NW swell west of Guadalupe Island. Farther west, another set of
NW swell entering the forecast area near 30N140W will propagate 
SE through tonight before decaying Thu.

High pressure will persist across the northern waters through 
Sun. NW swell will impact the waters west of Baja California
beginning late Thu, and build seas to 8-10 ft east of 125W by Fri
morning. Looking ahead, winds and seas are expected to increase
west of Baja California Norte late Sun and Sun night as high
pressure strengthens NW of the region.

$$
B Reinhart