000
AXPZ20 KNHC 300955
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Tue Apr 30 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 
0830 UTC.

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

A trough extends from 07N83W to 06N88W to 05N93W. The ITCZ 
continues from 05N93W to 05N112W to 04N120W to 05N127W, then 
resumes near 05N129W to beyond 03N140W. Scattered moderate to 
isolated strong convection is from 02N to 10N east of 90W, and 
from 01N to 10N W of 110W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO... 

High pressure extends from the far NE Pacific waters SSE to just 
west of the Revillagigedo Islands. Latest scatterometer data 
show a 1008 mb low over the northern Gulf of California near 
31N113W with associated surface trough extending to 27N113W.
The resultant pressure gradient between the area of high 
pressure and the elongated area of low pressure just east of 
Baja California Norte is supporting gentle to moderate NW to N 
winds over the offshore waters of Baja California, increasing to 
fresh near the coastline during the evening hours. Seas with 
these winds will be in the 4-6 ft range. These conditions will 
prevail through the weekend.

Gulf of California: Strong SW to W winds across far north 
portions of the Gulf will continue through this morning, 
resuming during the evening before diminishing Wed morning. Seas 
across that area will build to 5-7 ft. Light to gentle winds 
will then prevail across most of the Gulf of California through 
the weekend. 

Gulf of Tehuantepec: Light to gentle variable winds and seas of 
4 to 6 ft will dominate through the weekend.

Ongoing agricultural burning, which are normally carried on 
during this time of year in SE Mexico and Central America, is 
generating smoke leading to hazy conditions along and adjacent 
to the coast of Central America and the coast of central Mexico, 
from Guerrero to Guatemala. 

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

Gulf of Papagayo: Fresh to strong NE to E winds will pulse 
during the evening and morning hours over the Gulf of Papagayo 
region through Thu morning.

Gulf of Panama: Moderate N winds will pulse during the evening 
and morning hours over the Gulf of Panama through Thu morning. 
Then, winds will become variable light to gentle, continuing 
through Sun. 

Ongoing agricultural burning, which are normally carried on 
during this time of year in SE Mexico and Central America, is 
generating smoke leading to hazy conditions along and adjacent to
the coast of Central America and the coast of SE Mexico, 
including the Gulf of Tehuantepec region. 

REMAINDER OF THE AREA...

High pressure prevails over the northern waters, extending from 
a narrow ridge centered across the far NE Pacific waters SSE to 
just west of the Revillagigedo Islands. The pressure gradient 
between the high pressure and lower pressure in the vicinity of 
the ITCZ is supporting moderate to fresh tradewinds N of the 
ITCZ to near 20N and west of 115W. Combined seas of 6-7 ft are 
over these waters in a mix of NW and SW swell and tradewind 
waves. These conditions will prevail through the remainder of 
the week. 

N swell is producing seas of 8-9 ft N of 29N between 123W and 
128W, however seas are expected to subside below 8 ft later this 
morning. Cross-equatorial SW swell will propagate through much 
of the forecast area east of 120W Thu afternoon through early 
Sun. Combined seas of 8 ft or higher will generally be confined 
to the waters south of the 04N and west of 100W.

$$
NR