000
AXPZ20 KNHC 012204
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Sat Jun 1 2019

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
2145 UTC.

...SPECIAL FEATURES...

...Heavy Rainfall Potential Over Central America and Southern
Mexico...

A large, low-level cyclonic circulation called a Central American
Gyre will persist across southern Mexico, Central America, and 
the far eastern Pacific for the next several days. Locally heavy 
rainfall is likely to continue over portions of Central America 
and southern Mexico during the next several days. These rains 
could cause flash flooding and mudslides in areas of mountainous 
terrain. Abundant moisture will persist across the region this 
weekend. Please refer to your local meteorological service for 
more details. 

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

The monsoon trough axis extends across Central America and 
southern Mexico, then passes through the coastal areas of 
Guerrero near 16N99W to a 1011 mb low near 13N101W and continues 
to 09N105W to 10N118W and to 08N125W, where it transitions to the 
ITCZ to 06N131W and to beyond 06N140W. Scattered moderate 
convection is within 60 nm of the trough between 99W and 100W, 
also within 60 nm either side of trough between 114W and 118W, 
and within 60 nm either side of the ITCZ between 134W and 139W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

Weak high pressure is maintaining gentle to moderate winds and 4
to 6 feet seas across open waters off Mexico.

A trough will move through Baja California Norte and the Gulf of
California this evening, supporting fresh south to southwest 
winds over the northern part of the Gulf of California through 
late Sun afternoon. Fresh northwest winds will pulse off Los 
Cabos through early next week. Farther south, weak low pressure 
is forecast to develop off Chiapas.

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

Gentle to moderate southwest winds and waveheights of 5-7 ft are
noted across the offshore forecast waters of Central America. 
These marine conditions will persist into Mon. Farther south, 
waveheights will build to 8 ft due to a southwest between 
Ecuador and the Galapagos Islands tonight and persist through 
Tue. Waveheights will briefly subside Tue night and Wed before 
another set of southwest approaches the Galapagos Islands Wed 
night.

REMAINDER OF THE AREA... 

A ridge extends from a 1029 mb high center located northwest of 
the area at 34N142W southeastward to the Revillagigedo Islands. 
This system is producing mainly moderate to fresh northeast 
to east winds across the waters W of 125W. Altimeter data from
this afternoon revealed waveheights in the 7-8 ft range from 08N
to 12N and west of 135W. The high pressure will remain nearly 
stationary through early next week while slightly weakening. As a
result, the aerial extent and strength of the trades will 
decrease. Northwest swell building waveheights to 8 ft will move 
into the waters north of 29N between 125W and 132W tonight, then 
subside through late Sunday.

$$
Aguirre