000
AXPZ20 KNHC 022107
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2106 UTC Mon Apr 2 2018

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
2100 UTC.

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

A surface trough extends from 08.5N84W to 03N100W. The 
intertropical convergence zone continues from 03N100W to beyond 
07N140W. Scattered moderate convection is noted from 07N to 10N 
between 120W and 127W. As it is normal for this time of the year,
a second ITCZ axis is observed south of the Equator, extending 
from 04S90W to 05S113W to 03S135W. No significant convection is 
noted.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A ridge extends from 1026 mb high pressure centered well north 
of the area near 44N132W southeastward through the Revillagigedo
Islands. This is maintaining a fairly weak pressure field and 
thus moderate northwesterly flow through the waters off Mexico 
through the Gulf of Tehuantepec. Seas are 3 to 5 ft in open 
waters, as noted in recent altimeter satellite passes. Light to 
gentle winds and modest seas are noted through the Gulf of 
California. The high pressure will build southward through mid 
week. allowing the northwesterly winds off Baja California to 
increase to moderate to fresh with seas building slightly. Fresh 
to strong gap winds are possible through the Gulf of Tehuantepec 
by early Thu as high pressure builds north of the region in the 
Gulf of Mexico. 

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

Gulf of Papagayo: moderate to fresh NE-E winds are expected 
through early Tue, and then again on Thu, with seas generally in
the 4-7 ft range. Gentle to moderate winds will prevail the 
remainder of the forecast period.

Gulf of Panama: moderate to fresh N-NE winds will prevail through
tonight, with seas of 4-7 ft.

Elsewhere, gentle to moderate offshore flow is generally expected
N of 09N through Tue, while light and variable winds are forecast
S of 09N.

REMAINDER OF THE AREA... 

A broad ridge extends across the region north of 15N related to 
1026 mb high pressure located near 44N132W. This high pressure 
center build southward over the next 24-48 hours then will 
remain nearly stationary over the northern forecast waters 
through mid week. Under the influence of this system, a weak 
pressure pattern will prevail over the forecast area. This will 
maintain mainly gentle to moderate winds, with seas less than 8 
ft through Tue night. Then, expect increasing winds and building 
seas across north of 25N and west of 135W Wed, ahead of a cold 
front approaching from the west, accompanied by long period 
northwest swell to 9 ft through mid week.

$$
Christensen