205 
AXPZ20 KNHC 232111
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Sat May 23 2020

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
1940 UTC.

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

The monsoon trough extends from 10N74W TO 09.5N97W to low pres
near 12N109.5W to low pres near 09N120W to low pres near 
09.5N131W. The ITCZ continues from 09N132W to beyond 08N140W. 
Scattered moderate to strong convection is noted from 04.5N TO
10N between 93W and 103W. Scattered moderate isolated strong 
convection is noted from 06.5N TO 12N between 108W and 125W,
and from 07.5N TO 11.5N between 137W and 140W. 

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A trough across the northern Gulf of California along 113.5W is
maintaining moderate to fresh SW winds east of this trough, where
seas are 3-4 ft. Gentle to moderate south to southwest winds and
seas of 3 ft or less prevail across the remainder of the Gulf of
California.

A ridge extends from near 31N135W southeastward to the 
Revillagigedo Islands to 17N108W. Moderate NW-N winds and 4-7 ft
seas prevail N of 20N. Gentle to moderate NW to N winds prevail 
S of 20N along with 4-6 ft seas. Agricultural fires in Mexico 
continue to produce hazy skies from near the Tehuantepec region 
all the way to NW Mexico. 

Little change in marine conditions is expected from the weekend 
through the middle of next week as the broad high pressure
prevails.

OFFSHORE WATERS WITHIN 250 NM OF CENTRAL
AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... 
 
Light to gentle winds persist off Central America, with gentle to
moderate SW winds farther south off Colombia and Ecuador. Wave 
heights are 4-6 ft in SW swell.

An active monsoon trough will lead to moderate SW winds along 
with scattered showers and thunderstorms over the offshore waters
of southern Central America and Colombia. Elsewhere, generally 
gentle to moderate breezes will continue through the next few 
days. Moderate long-period SW swell will continue through the 
middle of next next week with seas building to near 8 ft SW of
the Galapagos Islands early next week. 

REMAINDER OF THE AREA...

A ridge extends from 1028 mb high pressure near 31N135W to 
across the Revillagigedo Islands to 17N108W. Mainly moderate 
trades prevail except locally fresh from 09N to 17N between 127W
and 140W, where corresponding seas are mainly 6-9 ft. Several 
weak low pressure centers remain along the monsoon trough, 
producing active convection, with winds around 20 kt and seas 6-8
ft. Fresh to strong northerly winds offshore of southern 
California are sending fresh northerly swell of 7-8 ft into the 
waters roughly N of 27N and E of 125W which will continue through
Sun, decaying thereafter.

Southerly flow to the south of the monsoon trough may strengthen
to moderate to fresh late this weekend into early next week 
allowing for a growing area of 8-10 ft seas early next week, 
aided by new long period SW swell. Meanwhile, the ridge will 
breakdown and shift W early next week as weak surface troughing 
develops across the N central waters, with broad cut-off low 
pressure developing along the troughing in the vicinity of 
25N130W. Winds W of the troughing may increase to moderate to 
fresh helping to build seas to around 8 ft early next week.

$$
Stripling