000
AXPZ20 KNHC 212130
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Wed Mar 21 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 1800 UTC surface analysis and satellite imagery through 
2030 UTC. 

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: High pressure building into 
southern Mexico behind a frontal system across the Yucatan 
Peninsula and southern Mexico is supporting strong to near-gale 
north winds into the gulf. Winds in Tehuantepec will further 
strengthen to minimal gale force tonight and will pulse again at 
night Thu, with seas building to a max of 13 ft. 

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

A surface trough extends from 07N77W to 04N91W. The ITCZ axis 
continues from 04N91W to 05N120W to 07N140W. Scattered moderate 
and isolated strong convection from 05N to 09N between 116W and 
126W. Scattered moderate convection is from 02N to 08N between 
84W and 99W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Please see see Special Features Section above for details on 
gale force winds expected to affect the Gulf of Tehuantepec.

Weak high pressure is centered W of the Baja peninsula near 27N 
119W. The high will support gentle northerly winds in the Baja 
offshore waters through Thursday. Moderate northerly winds will 
develop Fri morning as a strong ridge builds NW of the forecast 
area behind a cold front moving into southern California.
  
Gulf of California: Light to gentle variable winds will dominate 
the gulf waters through the weekend.

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

Gulf of Papagayo: Fresh to strong northeast winds will resume 
downstream the Gulf of Papagayo late tonight, reaching near 92W 
Friday. This wind episode will continue through Sun with max 
seas building to 10-11 ft. 

Fresh to strong northerly winds are also expected downstream of 
the Gulf of Panama starting tonight through Friday evening. 
Light to gentle offshore flow will prevail elsewhere.

REMAINDER OF THE AREA... 

A 998 mb surface low pres system N of the area near 34N131W 
extends a surface trough to 30N136W to a 1010 mb low near 
29N138W to 26N140W. Fresh to strong winds are behind this area 
of low pressure with seas to 13 ft. The low over forecast waters 
will dissipate while the main low north of the area will 
continue to lift N-NE away from the area through Thu morning. 
Fresh to strong winds will follow the trough during that period 
with seas building to 14 ft tonight. Otherwise, large NW swell 
will propagate southeastward through Sat.

$$
Ramos