000
AXPZ20 KNHC 012110
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2110 UTC Sat Apr 1 2017

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
2100 UTC.

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

The ITCZ is located south of the discussion waters. 

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure of 1033 mb centered north of the area near 36N138W
ridges southeastward past the Revillagigedo Islands to near 
15N105W. Gentle to moderate winds prevail off the west coast of 
Baja California Norte while moderate to fresh winds prevail off 
the coast of Baja California Sur. Light to gentle winds are 
evident elsewhere over the forecast waters. Seas in the 7 to 10 
ft range are present off the west coast of Baja California 
Norte, 6 to 8 ft off the coast of Baja California Sur, 3 ft or 
less over the Gulf of California, and 4 to 7 ft over the 
remainder of the forecast waters.
 
Seas will subside through Sunday afternoon as NW swell continues 
to decay. Another set of northwest swell will cause seas to 
build to the 8 to 12 ft range offshore of Baja California Norte
and to 6 to 9 ft offshore of Baja California Sur through early
next week. A cold front will approach northwest Mexico early next
week with southerly winds in the northern Gulf of California
increasing to fresh to locally strong ahead of it.

Looking ahead, a cold front will cross the Gulf of Mexico late 
next week. High pressure building southward behind the cold front
could produce near gale to gale force winds in the Gulf of 
Tehuantepec Thursday night and Friday.

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

Light to gentle winds and seas in the 3-5 ft range will prevail 
over the forecast waters through the middle of next week, with
seas building to 4-6 ft by the end of the week as long period SW
swell arrives.

REMAINDER OF THE AREA...

High pressure prevails over the northern waters. The pressure 
gradient between the high and lower pressure near the equator is
generating moderate to fresh winds over the trade wind belt north
of 06N and west of 120W. Seas within this area range between 7 
and 9 ft as long period NW swell mixes with shorter period NE 
wind waves. 

Another round of large NW swell will reach the NW part of the 
forecast area tonight. This set of swell will propagate 
southeastward through early next week. Seas associated with this 
swell event will peak around 14 ft over the northern waters near 
30N131W Sunday before gradually subsiding. Yet another round of 
NW swell appears to be in the offing for Wednesday night through 
Thursday night as a cold front weakens while crossing southeast
of 30N140W.

$$
LEWITSKY