357 
AXPZ20 KNHC 240306
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
049 UTC Fri Aug 24 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 0000 UTC surface analysis and satellite imagery through
0300 UTC. 

...TROPICAL WAVES...

The axis of a tropical wave is near 79W N of 02N, moving W at 
around 20 kt. Associated convection is described in the Monsoon 
Trough section below.

The axis of a tropical wave is near 91W N of 03N, moving W at 20
kt. Associated convection is described in the Monsoon Trough 
section below.

The axis of a tropical wave is near 122W from 03N to 20N, moving
W around 15 kt. Associated convection is described in the 
Monsoon Trough section below.

The axis of a tropical wave is nmear 133W from 03N to 19N, moving
W at 10 to 15 kt. Associated convection is described in the 
Monsoon Trough section below.
   
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

The monsoon trough extends from 08N82W to 07N88W to 09N96W to
08N102W to 11.5N122W to 08N139W. Scattered moderate and isolated
strong convection is N of 04N E of 83W, from 06.5N to 13N between
91W and 103W, from 08N to 16N between 110W and 120W, and from 07N
to 12N between 120W and 125W. Scattered moderate convection is
noted from 07N to 10N between 131W and 140W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

In the Gulf of Tehuantepec, fresh to near gale force northerly 
winds and seas of 8 to 9 ft will persist through early Fri due
to a tight pressure gradient between high pressure N of the area
and the monsoon trough. These gap winds and related seas will 
return again Sat night and Sun night.

Elsewhere, ridging across the waters north of 20N will support
moderate to occasionally fresh winds funneling along the coast 
of Baja California through the next several days, with 3 to 5 ft 
seas, with the highest seas off Baja California Norte. Winds will
increase to fresh to strong offshore of Baja California Norte Mon
night through Tue night with seas building to 6 to 8 ft. 
Meanwhile, gentle to moderate southerly flow will persist over 
the Gulf of California.

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

The monsoon trough will linger between 08N to 12N during the 
next few days. Winds on both sides of the trough axis will 
generally be light to moderate. The main exception to this will 
be over the Gulf of Papagayo, where nocturnal offshore winds 
will pulse to fresh the next several nights, except fresh to 
strong Fri night into early Sat. Seas are expected to remain 
less than 8 ft downstream of Papagayo with the winds.

REMAINDER OF THE AREA...   

The pressure gradient between ridging across the northern waters
and the monsoon trough will support gentle to moderate trades 
and 4 to 7 ft seas in mixed swell north of the monsoon trough and
west of 120W through the weekend.

Sea heights will be relatively low for most of the forecast area
this week. Long period swell could arrive from the Southern 
Hemisphere toward the end of this week and cause seas near the 
Equator to begin building over the weekend, although seas will 
remain less than 8 ft.
  
$$
AL