000
AXPZ20 KNHC 240236
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
110 UTC Wed May 24 2017

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 10N86W to 12N97W to 09N110W TO 
08N120W. The intertropical convergence zone extends from 08N120W
to 06N140W. Scattered moderate and isolated strong convection is
within 150 nm on either side of the monsoon trough between 100W
and 120W. Isolated moderate convection prevails within 100 nm on
either side of the ITCZ. 

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A weak pressure gradient prevails across the area supporting  
moderate NW winds prevailing across the Baja peninsula waters, 
and light NW to W winds from Las Tres Marias to Acapulco. Seas 
of 4 to 6 ft in mixed NW and SW swell and will subside to 4 to 5
ft by tonight. The pressure gradient will tighten somewhat N of 
20N Wednesday through Friday as the ridge builds modestly into 
the region, with winds and seas increasing slightly. 

In the Gulf of California, mainly light and variable winds are 
expected through Thursday, with seas of 2 ft or less, except 3 to
4 ft near the entrance. Low pressure will deepen just N of the
area over SW Arizona by Wednesday night through the end of the 
week. A trough will extend from the low across the northern Gulf
to Baja California Norte. Fresh to strong southerly winds will 
develop SE of the trough Wednesday night, and then again on 
Thursday night as winds become enhanced through the gaps in the 
higher terrain of Baja. Seas will increase significantly, 
reaching 6 to 7 ft each night during the nocturnal wind max.

S of 16N including the Gulf of Tehuantepec, broad and weak low 
pressure has persisted across the offshore waters SW of 
Tehuantepec the past few days, drifting to the W. Gentle to 
moderate SE winds occurring between Tehuantepec and offshore of 
Acapulco will gradually weaken and veer SW through Wednesday.

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

Moderate SE winds prevail between the Papagayo region and 
Tehuantepec, with seas of 5 to 7 ft in SW swell. Expect these 
conditions to continue tonight before gentle to moderate SW to W 
monsoonal winds spread N of 09N and into the coastal waters 
through early Wednesday. Nocturnal offshore winds will pulse to 
fresh levels near the Gulf of Papagayo by Saturday night. 
Moderate SW winds are expected S of 09N through Thursday night, 
with seas subsiding through Wednesday before a new pulse of SW 
swell arrives Thursday through late Friday. Otherwise, little 
change is anticipated through the upcoming weekend.

REMAINDER OF THE AREA...
  
A weak ridge extends from 30N138W SE to near 17N116W. The ridge 
will drift on Wednesday as a trough moves SE across the waters N
of 30N accompanied by long period NW swell. This will build seas
to 6 to 8 ft from 30N to 32N between 120W and 135W. Elsewhere N 
of the convergence zone, the weak ridge will maintain moderate 
trade winds S of 18N, with seas of 5 to 7 ft expected. Little 
change is anticipated through the upcoming weekend.

$$

ERA