000
AXPZ20 KNHC 270318
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
0405 UTC Fri Dec 27 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 0000 UTC surface analysis and satellite imagery through 
0315 UTC.

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

The monsoon trough extends from 06N77W to 05N97W to 07N110W to 
08N125W. The ITCZ continues from 08N126W to 07N132W to beyond 
07N140W. Scattered moderate convection is from 04N to 09N 
between 85W and 110W, and from 06N to 09N W of 118W. 

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A cold front passes through 29N114W to 24N122W to 24N132W.
The front will reach Cabo San Lazaro to 22N120W by Friday 
morning and then weaken before dissipating near Cabo San Lucas 
early on Sat. Strong to locally near gale force winds are behind 
the cold front and N of Punta Eugenia. These winds will continue 
to affect the Baja California Norte offshore waters through Fri 
morning. Long-period NW swell following the front, with sea 
heights reaching 17 feet, moves across the waters off Baja 
California tonight. The sea heights will start decaying tonight, 
however sea heights to 10 ft are expected along the Baja 
offshores through Sun evening.   

Strong NW winds are expected in the northern Gulf of California 
Fri morning as a reinforcing cold front moves across the Baja 
California Norte tonight. Otherwise, moderate to fresh northerly 
winds off the coast between Cabo Corrientes and Manzanillo will 
diminish to moderate northerly winds Mon evening.

Tehuantepec: Strong gap winds will pulse tonight through Fri 
night, due to local drainage effects.

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

Fresh to strong winds are expected across the Gulf of Papagayo 
and downwind to near 90W through the middle of the upcoming 
week. Gentle to moderate south to southwest monsoon flow will 
persist elsewhere, across the offshore waters of Costa Rica, 
Panama, Colombia, and Ecuador. Light to gentle wind flow will 
dominate across the Gulf of Panama, except for tonight and Fri 
when moderate northerlies are expected. 

REMAINDER OF THE AREA...

A surface ridge dominates the waters N of 20N W of 125W. The 
pressure gradient between the ridge and lower pressure in the 
vicinity of the ITCZ is supporting moderate to fresh tradewinds 
from the ITCZ to 12N and W of 130W. A cold front extends from 
Baja California Norte near 29N115W to 24N124W to 24N132W. Strong 
to near gale force winds prevail behind the front N of 25N and E 
of 124W with sea heights of 12 to 18 feet N of the front. Mixed 
NE and NW swell is elsewhere W of 130W with sea heights to 11 
ft. Seas will start diminishing on Fri, however long period NW 
swell with seas to 10 ft is expected to continue through the 
weekend. 

A new cold front will move across the northern waters Sunday 
into Monday. High pressure building behind this front will help 
to bring an increase to the tradewinds from 15N to 25N west of 
115W starting Sat evening and continuing through early next week.

$$
NR