000
AXPZ20 KNHC 210915
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Thu Mar 21 2019

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 0600 UTC surface analysis and satellite imagery through 
0900 UTC.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: Strong winds over the Gulf of 
Tehuantepec will pulse to minimal gale force tonight between 
0300 UTC and 1200 UTC. Seas will peak near 12 ft during the 
period of strongest winds tonight. Winds and seas will rapidly 
diminish Fri night.

Please read the latest High Seas Forecast issued by the National 
Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or 
at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for 
further details.

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

A surface trough extends from 07N77W to 05N85W. The ITCZ 
continues from 05N85W to 03N140W. No significant rain shower 
activity is observed along this boundary. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...  

Please read the Special Features section for more details about 
the Gulf of Tehuantepec Gale Warning.

Gulf of California: Fairly benign marine conditions will prevail 
through this weekend, with seas 3 ft or less.

Moderate to occasionally fresh NW winds will prevail elsewhere 
through the weekend. NW swell propagating into Baja California 
Norte will spread southward across the rest of the Baja 
Peninsula today. Another episode of large NW swell will reach 
the forecast area during the weekend.

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

Gulf of Papagayo: Winds will pulse to strong during the 
overnight hours across the Gulf of Papagayo through Mon, with 
near gale-force winds expected Fri night. Seas will peak around 
9 ft during the period of strongest winds.

Gulf of Panama: Fresh northerly winds will occasionally pulse to 
strong at night over the Gulf of Panama through Sat night, with 
seas peaking around 8 ft during the period of strongest winds.

Between Ecuador and the Galapagos Islands, 4-6 ft seas in mixed 
swell will persist, building to 5-7 ft during the upcoming
weekend with the arrival of both long period SW and NW swell. 
Elsewhere, light to moderate winds and 3-5 ft seas will prevail 
for the next several days. 

REMAINDER OF THE AREA... 

Large NW swell associated with a cold front from 31N113W to 
24N116W to 20N126W has increased seas to 11-12 ft near 15N130W. 
This swell will continue to propagate SE across the waters while 
subsiding the next couple of days. By this afternoon, seas 8 ft 
or greater will cover most of the area W of 110W. A reinforcing 
set of NW swell will arrive later today from another cold front. 
Seas associated with the reinforcing swell will peak near 15 ft 
over the NW waters on Fri night. A third cold front will arrive 
early Sun, ushering in yet another set of large NW swell to the 
NW waters.

$$
Mundell