000
AXPZ20 KNHC 190908
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
652 UTC Tue Jun 19 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 0600 UTC surface analysis and satellite imagery through
0900 UTC. 

...TROPICAL WAVES...

The axis of a tropical wave is analyzed near 95W, moving slowly 
westward. Convection associated with this wave is occurring 
mainly along the monsoon through.

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

The monsoon trough extends from 10N85W to 10N98W. It resumes 
from 14N105W to 13N110W to 07N120W. The ITCZ extends from 
07N120W to 06N124W to 09N134W. Scattered moderate to strong 
convection was noted from 06N to 09N between 85W and 92W. 
Scattered moderate isolated strong convection was noted from 06N
to 09N between 92W and 98W. Scattered moderate convection was 
noted from 06N to 11N between 109W and 123W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Moderate to fresh winds west of the Baja California peninsula 
will diminish slightly today, with gentle to moderate winds 
prevailing the remainder of the week into the first half of the 
weekend. Seas in the 5-7 ft range offshore of the Baja peninsula 
will subside to 4-6 ft by Thursday. A new set of northerly swell 
will propagate into the waters off Baja California Norte by the
end of the week, building seas to near 8 ft Saturday. Elsewhere,
light to gentle winds, with seas in the 4-6 ft range will 
prevail over the open waters the next several days. Southerly 
swell will propagate into the waters off Southern Mexico by the 
end of the week, which will build seas to near 7 ft by Saturday.

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

The monsoon trough will prevail near 10N through midweek before 
slowly lifting northward. Light to gentle winds will prevail N of
the monsoon trough, with gentle to moderate S to SW winds 
prevailing S of the monsoon trough. A pulse of long period SW 
swell will reach the waters W of Ecuador by Thursday, with 
combined seas building to 7 to 9 ft, except in the lee of the 
Galapagos Islands. The swell will continue to spread across the 
southern forecast waters, with seas building to 5 to 8 ft S of 
08N by Saturday night.
  
REMAINDER OF THE AREA...

High pressure of 1023 mb centered near 45N136W extends a ridge SE
to near the Revillagigedo Islands. Light to gentle anticyclonic 
wind flow prevails over the waters north of 20N, while gentle to
moderate trades prevail S of 20N and west of 120W. Seas are in
the 5-7 ft range. Seas N of 20N will subside to 4-6 ft by
Wednesday evening. A fresh set of northerly swell will propagate
into the northern waters Thursday, with seas building to 6-8 ft
north of 25N between 120W and 130W Friday. Southerly swell will 
cross the equator on Wed, building seas to 6-9 ft south of 10N 
and west of 90W Friday.

$$
AL