000
AXPZ20 KNHC 030937
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
747 UTC Wed May 3 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 0600 UTC surface analysis and satellite imagery through
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...          
A surface trough extends from 08N78W to 08N87W to 09N95W to 
08N101W to 08N108W. The ITCZ axis extends from 08N108W to 
06N124W to 05N140W. Scattered moderate convection is from S of 
08N E of 80W...from 03N to 09N between 88W and 97W...from 04N to 
08N between 100W and 106W...from 06N to 10N between 108W and 
114W...and from 04N to 08N W of 125W.
 
...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...
Latest observations indicate light to gentle winds across the 
Gulf of California with seas in the 1-3 ft range. Generally light
to moderate winds are occurring across the Gulf of Tehuantepec
region per a recent ASCAT pass around 03/0358 UTC with seas in 
the 4-6 ft range. Elsewhere...gentle to moderate winds with seas
in the 4-6 ft range prevail. Conditions will remain within the
winds 20 kt or less and seas less than 8 ft criteria through 
Thursday. A strong cold front will move across the Gulf of 
Mexico Wednesday night late into early Thursday and reach the Bay
of Campeche mid-day Thursday. Winds will funnel through the 
Chivela Pass and strengthen across the Gulf of Tehuantepec 
Thursday night. Winds will further increase to gale force Friday 
morning. Winds in this gale force gap wind event will peak near 
40 kt Friday afternoon...with seas peaking near 15 ft Friday 
night. Thereafter...winds will diminish below gale force by 
Saturday morning. 

OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND 
WITHIN 750 NM OF ECUADOR...
Light to gentle winds...with seas in the 4-6 ft range prevail 
across the forecast waters. Active convection continues off the 
coasts of eastern Panama and western Colombia near 07N78W and 
off the coasts of Nicaragua and El Salvador near 13N88W this
morning. Winds are expected to remain 20 kt or less with seas 
less than 8 ft through the end of the week.

REMAINDER OF THE AREA...
High pressure of 1026 mb centered N of the area near 37N131W 
extends a ridge SW to the NE of the Hawaiian Islands near 
25N153W. Another ridge axis extends from near 22N130W SE to near 
13N108W. The pressure gradient between this area of high pressure
and lower pressure in the vicinity of the ITCZ is supporting 
gentle to moderate trades with seas in the 5-7 ft range N of the 
ITCZ. A cold front will approach the NW waters Thursday which 
will freshen winds across this area Thursday night into Friday. 
The fresh winds will spread eastward along with the front and 
usher in a fresh set of northwesterly swell with seas greater 
than 8 ft moving into the NW waters Thursday night late covering
much of the area N of 22N W of 120W by Saturday. As a result of 
the swell...seas across the northern portion of the discussion 
waters will range from 8-10 ft.

$$
HUFFMAN