000
AXPZ20 KNHC 050915
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Thu Dec 5 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 
0900 UTC.

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

The monsoon trough extends from 07N78W to 10N85W to 05N91W to 
11N121W, then resumes near 10N133W to 07N140W. Scattered 
moderate convection is noted within 90 nm either side of the 
monsoon trough between 89W and 121W.
  
OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A weakening cold front extends across Baja California Norte from 
32N114W to 25N120W. Light to gentle winds prevail across most of 
the offshore waters this morning. The cold front will dissipate 
later today. Fresh to strong northerly winds will pulse across 
the Gulf of Tehuantepec through tonight. Fresh NW to N winds 
will develop over the central and southern Gulf of California 
tonight, and persist through Sat. Gale force winds are expected 
over the Gulf of Tehuantepec Fri night through Sat night as high 
pressure builds over eastern Mexico behind a Gulf of Mexico cold 
front. Large NW swell will reach the waters off Baja California 
this weekend, then subside early next week.

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

Fresh to occasionally strong NE to E winds will pulse across 
and downstream of the Gulf of Papagayo through Mon, with seas 
peaking around 8-9 ft downstream of the Gulf each morning. 
Gentle to moderate S to SW monsoon flow will persist across the 
offshore waters of Costa Rica, Panama, Colombia, and Ecuador 
during the next several days.

REMAINDER OF THE AREA...

NW swell persists across much of the region, with altimeter 
passes showing 8-9 ft seas south of 20N and west of 115W. Wave 
heights will continue subsiding today as residual swell decays.

A cold front will reach the far NW portion this evening, cross 
the northern waters through Fri night, then stall and weaken on 
Sat. Associated large NW swell will sweep into the area late 
tonight, and propagate SE through the weekend. Seas will build 
to greater than 12 ft over the northern waters Fri through Sat, 
peaking around 22-23 ft over the far NW portion on Friday.

$$
Mundell