000
AXPZ20 KNHC 261557
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1605 UTC Sat May 26 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 1200 UTC surface analysis and satellite imagery through 
1500 UTC. 
  
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

The monsoon trough extends from 14.5N91W TO 10N113W TO 
07.5N126W. The ITCZ then begins from low pres near 10.5N133W 
1010 MB to beyond 07N140W. Scattered moderate convection is 
noted surrounding the low pres from 10N to 16.5N between 126W 
and 134W. Scattered to numerous strong convection is from 02.5N 
to 09N between 80.5W and coast of Colombia. Scattered moderate 
to strong convection is noted from 05.5N to 14N between 80.5W 
and 109W, and from 04N to 08N between 117W and 127W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A strengthening ridge extends SE into the region from a 1030 mb 
high centered near 36N146W to the Revillagigedo Islands. Fresh 
to locally strong NW to N winds across the offshore waters of 
Baja California will persist through Sun. Seas across this area 
will run between 6 and 9 ft through the weekend.
  
Gulf of California: Gentle to moderate NW winds will prevail 
across the Gulf waters through Sunday, with strong afternoon 
through evening sea breezes recurring along the Mexican 
coastline from Mazatlan to Guaymas each of the next few days.

Gulf of Tehuantepec: Moderate to locally fresh nocturnal 
drainage flow is expected this morning, then light to moderate 
onshore flow is expected through Sun night.
  
OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND 
WITHIN 750 NM OF ECUADOR... 

The monsoon trough is displaced N of its climatological position
in response to broad low pressure that has formed over the 
Yucatan peninsula and Central America. This pressure pattern will
support light to moderate SW to W winds and 4 to 6 ft seas for 
the waters west of Central America through Tue.
 
REMAINDER OF THE AREA...
   
NW swell associated with a dissipated frontal boundary will 
remain high enough to maintain seas above 8 ft for the waters 
from 24N TO 28N west of 137W through late this afternoon. 

Elsewhere, the ridge building over the north central Pacific is 
producing a modest pressure gradient across the trade wind belt, 
with moderate to fresh winds observed in satellite-derived wind 
data from 08N to 20N to the west of 115W. A 1010 mb low pressure 
center continues across far SW portions near 10.5N133W. A broad 
area of fresh NE winds and seas 8 to 10 ft is evident near the 
low from 10N to 15N between 128W and 138W. The low will weaken 
to a trough by this evening as it translates westward. Meanwhile 
the expansive high centered over the central Pacific will shift 
E over the NE Pacific, and maintain fresh trade winds and seas 
from 7 to 9 ft across the trade wind belt through Tue.
  
$$
Stripling