000
AXPZ20 KNHC 190917
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Fri Mar 19 2021

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.

...SPECIAL FEATURES...

Gulf of Tehuantepec Gale Warning: Strong high pressure building 
southward in the western Gulf of Mexico will funnel winds across
Mexico into the Gulf of Tehuantepec. These gap winds will remain
at gale force through Sun morning, and peak at 40-45 kt tonight.
Maximum seas may reach 15-18 ft on Sat. Please read the latest 
NWS High Seas Forecast from the National Hurricane Center at the 
website: 
www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details.

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

A trough extends from 07N78W to 05N88W. The ITCZ continues from 
05N88W to 02N114W to 03N140W. Scattered moderate convection is 
noted from 02N to 05N between 117W and 127W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Please see Special Features section above for details on a Gale
Warning for the Gulf of Tehuantepec. 

Moderate NW to N winds north of 20N will prevail through tonight.
Fresh to strong NW winds will develop west of Baja California 
this weekend. Large NW swell associated with a weakening cold 
front will reach the waters west of Baja California this weekend,
then linger into Mon. Gap winds across the Gulf of Tehuantepec 
will diminish Sun night and Mon. Gentle to moderate winds are 
expected elsewhere. 

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

Light to gentle winds were indicated in scatterometer data early
this morning. Sea heights range from 3 to 5 ft.

Fresh to strong NE to E winds will pulse across the Papagayo 
region through early next week. Moderate to fresh winds will 
pulse in the Gulf of Panama Sat through Mon. Light to gentle 
winds will prevail elsewhere. Large seas from Gulf of Tehuantepec
gales this weekend will spread into the offshore waters of 
Guatemala and El Salvador through Sun. 

REMAINDER OF THE AREA...

Moderate to fresh trade winds north of the ITCZ to around 15N 
are generating seas in the 6-8 ft range. A cold front from 
31N127W to 21N139W will continue eastward across the waters 
north of 23N through Sun, while slowly weakening. Moderate to 
fresh winds are expected behind the front. NW swell of 8-13 ft 
associated with the front will continue propagating south and 
east through the weekend. Winds will likely increase to fresh to 
strong during the weekend as strong high pressure north of the 
area settles south.

$$
Mundell