000
AXPZ20 KNHC 071549
TWDEP 

Tropical Weather Discussion...Corrected
NWS National Hurricane Center Miami FL
1145 UTC Tue Mar 7 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 1200 UTC surface analysis and satellite imagery through 
1530 UTC.

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

The ITCZ axis extends from 03N94W to 01N116W to 03N123W to 
0N134W. Scattered moderate convection is present from 02N to 06N 
between 94W and 102W.

...SPECIAL FEATURE...

GULF OF TEHUANTEPEC GALE WARNING...

Winds over the Gulf of Tehuantepec will increase to 20-25 kt 
Tuesday night and to near gale force Wednesday night. Then with 
high pressure building southward over the Gulf of Mexico the 
pressure gradient will tighten over the area, thus inducing gale 
conditions Wednesday night through Thursday. 

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure of 1028 mb centered north of the area near 33N126W 
ridges SE to near the Revillagigedo Islands. The pressure 
gradient between this area of high pressure and a trough along 
western Mexico and the Gulf of California supports fresh to 
strong NW winds with seas in the 4-7 ft range east of the Baja 
California Sur. Winds will extend northward across the Gulf to 
south of 30N through tonight then will start to diminish 
gradually till Wednesday morning. Seas N of 22N off the west 
coast of the Baja California peninsula have build to 10 ft. The 
high will slightly weaken Wednesday morning allowing for the 
seas to decrease over the offshore waters of Baja. Otherwise, 
the next gap wind event will start Tuesday night. Please see the 
special features section for further details.

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

The pressure gradient between strong high pressure centered off 
the east coast of the United States and climatological low 
pressure over Colombia continue to allow the funneling of fresh 
to strong winds into the Gulf of Papagayo. Winds of 20 to 25 kt 
will continue to pulse during the late night and early evening 
hours over the Gulf of Papagayo through Friday when a front 
moving southeastward from the United States will weaken the high 
pressure ridge. This synoptic pattern will also cause fresh 
winds to pulse over the Gulf of Panama during the late night and 
early morning hours through the end of the week.

Elsewhere...light to gentle breezes and seas of 4-6 ft will 
prevail through the end of the week.

REMAINDER OF THE AREA... 

High pressure centered north of the area near 33N126W ridges SE 
to the Revillagigedo Islands. The pressure gradient between this 
area of high pressure and lower pressure associated with the 
ITCZ is generating moderate to fresh trades mainly from north of 
06N west of 116W. NW swell is propagating through the northern 
waters and seas ranges from 8 to 10 ft being the highest seas 
over Baja California offshore waters. South of 20N the swell is 
from the NE and seas are up to 8 ft. The area of high pressure 
will remain centered just north of the area through the forecast 
period. This setup will maintain the area of moderate to fresh 
trades, however winds and seas will reduce to south of 22N by 
Wednesday morning and south of 20N Thursday.

$$
NR