000
AXPZ20 KNHC 280316
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Thu Feb 28 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 0000 UTC surface analysis and satellite imagery through 
0245 UTC.

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

The intertropical convergence zone axis extends from 0N98W to 
0N106W to 01N115W to 01N131W. Secondary ITCZ from 04S103W to 
02S118W to 02S130W. Scattered moderate rain showers and a few 
thunderstorms are noted from 04S to 05N between 106W and 122W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...  

1021 mb high pressure centered near 27N119W will support mainly 
gentle to moderate NW winds off Baja California and the Gulf of 
California through Fri, increasing slightly to moderate to fresh 
winds off the coast of Baja California Sat and Sun ahead of a 
deep layer trough moving to the northwest of the region. Farther 
south in the Gulf of Tehuantepec, weak high pressure over the 
Gulf of Mexico will support moderate gap winds tonight through 
Thu. Model guidance indicate that the next gap wind event in 
Tehuantepec will begin late Tue afternoon with strong to near 
gale force winds, rapidly increasing to gale force at night.

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

Persistent strong trade winds over the SW Caribbean will 
continue to support strong gap winds through the Gulf of 
Papagayo with 8 ft seas downstream mainly at night reaching near 
90W. Moderate to fresh northerly gap winds will be active 
through the Gulf of Panama at night, mainly near the Azuero 
peninsula through Mon.

REMAINDER OF THE AREA... 

1021 mb high pressure is centered near 27N119W with moderate to 
fresh trade winds on the southern periphery of the high 
pressure. Otherwise gentle to moderate trade winds persist. A 
large area of long period NW swell in excess of 8 ft will 
prevail over the region north of 12N and west of 127W through 
Thu morning.

Meanwhile low pressure will become organized northeast of the Big
Island through Thu, then move northeastward toward northern 
California through Sat. Strong SW to W winds and reinforcing 
swell will follow the cold front associated with the low 
pressure, impacting the waters north of 20N and west of 125W 
through Fri night. Strong S winds are also expected ahead of the 
cold front N of 20N Thu through Fri night. 

Winds and seas diminish through Sat evening, as the low pressure 
moves well north of the area and the front dissipates. Seas in 
excess of 8 ft will linger in a mix of NW swell and shorter 
period trade wind swell south of 15N through Mon. A new cold 
front will enter the NW waters Sun evening with another set of 
long period swell with seas in the range of 8 to 14 ft 
continuing through early next week.

$$
NR