000
AXPZ20 KNHC 282150
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2150 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 1800 UTC surface analysis and satellite imagery through
2130 UTC.

...SPECIAL FEATURE...

Gale warning: A deep layer low northeast of the Big Island is 
moving toward northern California. An upper-level trough ahead 
of the low is supporting development of 1010 mb low pressure near
24N138W. Thunderstorms are active just ahead of the low pressure
as it moves northeast through the area. A broad area of strong 
to gale force winds is noted ahead of the low, especially near 
areas of thunderstorms. A Gale Warning has been issued to 
account for this. For more information, please see the High Seas 
Forecast product at www.hurricanes.gov/text/MIAHSFEP2.shtml.

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

The intertropical convergence zone axis extends from 08N86W to a  
1010 mb low near 02N95W to 05N140W. Scattered moderate showers and 
thunderstorms are noted south of 04N between 89W-96W and south of
06N and west of 123W. 

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...  

Earlier scatterometer pass indicated generally moderate NW winds
off Baja California, although more recent ship observations 
hinted winds have increased slightly north of Punta Eugenia. 
These winds will diminish through Fri as high pressure west of 
Baja California shifts eastward and dissipates, ahead of a weak 
cold front moving through the region on Sun. 

Elsewhere over Mexican offshore waters, moderate winds and seas
will persist into early next week. Looking ahead, the next
substantial gap wind event through the Gulf of Tehuantepec is
expected by early Tue.

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

High pressure north of the region will support fresh
to occasionally strong gaps winds across the Gulf of Papagayo 
through Sun. Generally moderate winds and seas will persist 
elsewhere, with occasionally fresh winds pulsing into the western
Gulf of Panama.

REMAINDER OF THE AREA... 

A cold front will pass east of 140W this evening following the 
small gale center moving across this region. The front will 
weaken while it moves eastward over the waters north of 25N, as 
upper support for the front lifts north of the area. The 
dissipating front or its remnant trough will move into Baja 
California by Sun. Strong SW winds will precede the front Fri, 
with seas to 13 ft. The area of strong winds will move north of 
30N by Fri night, with northwest swell of 8 to 11 ft lingering 
over the region north of 20N west of 130W into Sat. Farther 
south, northwest swell will mix with wind waves due to trade wind
flow from 05N to 18N west of 120W into early next week. Looking 
ahead, the next cold front will move to the northeast of Hawaii 
and cross 140W by late Sun into Mon, accompanied by strong SW to 
W winds with a new round of NW swell in excess of 8 ft.

$$

ERA