000
AXPZ20 KNHC 100226
TWDEP 

Tropical Weather Discussion 
NWS National Hurricane Center Miami FL
0405 UTC FRI JUN 10 2016

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 0000 UTC surface analysis and satellite imagery through
0230 UTC.
  
..INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...         

The monsoon trough extends from low pressure near 13N108W to
07N116W to low pres near 11N132W to 09N136W to 09N140W. No
intertropical convergence zone axis is present east of 140W.
Scattered moderate convection is noted within 90 nm either side
of a line from 05N84W to 10N101W. Scattered moderate convection
is noted within 180 NM S of the monsoon trough between 108W and
120W.  

...DISCUSSION...   

North of 15N east of 120W:                                 

Broad high pressure ridging extends into the western portion,
while elongated surface troughing stretches along the Baja
California peninsula. The pressure gradient between the area of
high pressure and the surface trough over the Baja California
peninsula is supporting gentle to moderate northwest winds with
combined seas of 4 to 5 feet across the waters outside of the
Gulf of California. The synoptic environment will change little
through the upcoming weekend which will maintain in the wind and
sea conditions. Winds will increase offshore of the United
States California waters this weekend which will bring fresh
northwest swells into the waters west of 110W by early next
week. This swell will merge with long period southwesterly cross-
equatorial swells to produce combined seas of 6-8 feet by the
early part of next week. In the Gulf of California, moderate to
occasionally fresh southeast to south flow will prevail through
Saturday.

South of 15N east of 120W:

Low pressure of 1010 MB is anchoring the monsoon trough near
13N108W. This low is forecast to linger across the same general
area through Friday, then will begin to drift west this weekend
as an elongated northeast to southwest open trough before
shifting west of 120W Monday afternoon. Light to moderate SW
monsoon flow prevails with seas of 3 to 5 feet east of 100W,
while seas of 4 to 7 feet prevail to the west of 100W. 

West of 120W:

Weak high pressure ridging prevails from 30N132W to 18N118W. The
pressure gradient between the weak ridge and the monsoon trough
is supporting gentle to locally moderate winds N of the monsoon
trough with seas in the 3-5 ft range. The ridge will build
across the northern waters this weekend, which will gradually
strengthen winds through next week with seas building to 6-9 ft.
Low pressure of 1011 MB is embedded in the monsoon trough near
11N132W. This low will weaken as it moves westward into the
upcoming weekend.

$$
AL