000
AXPZ20 KNHC 130920
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Fri Apr 13 2018

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 09N84W to 05N91W. The ITCZ 
continues from 05N91W to 07N120W to 04N140W. Scattered moderate 
convection is from 05N to 09N between 112W and 118W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Fresh to strong NW winds and large NW swell will prevail west of 
Baja California Norte today. Strong NW winds are forecast across 
the length of the Gulf of California through early Sun. Strong N 
to NE gale force winds will begin over the Gulf of Tehuantepec 
starting Sun, continuing into Tue morning.

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

Light to gentle winds are expected through the forecast period. 
Seas in the 3 to 4 ft range will continue over most of the area. 
Fresh gap winds are likely in the Gulf of Papagayo tonight, and 
possible again starting Tue.

REMAINDER OF THE AREA... 

The pressure gradient between lower pressure in the vicinity of 
the ITCZ and high pressure centered N of the area near 35N133W 
is producing moderate to fresh trade winds north of the ITCZ and 
west of 110W. Ridging will build east-southeastward through Sat, 
with a tighter gradient increasing the trade winds across the 
tropical Pacific. Large NW swell propagating SE across forecast 
waters, with max seas to 13-14 ft, will slowly diminish through 
Mon night. A cold front will sweep into northwestern waters Sun, 
then weaken over northern waters Mon. 

$$
Mundell