000
AXPZ20 KNHC 092125
TWDEP 

Tropical Weather Discussion 
NWS National Hurricane Center Miami FL
2205 UTC Thu Mar 9 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 1800 UTC surface analysis and satellite imagery through 
2100 UTC.

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

A surface trough extends westward from 02N85W to 03N108W, where 
scatterometer winds indicate that an ITCZ exists through 06N121W 
to 05N140W. No significant convection at this time. 

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A surface ridge will meander from roughly 21N116W to 14N98W 
through the upcoming weekend. Gentle to moderate NW flow is 
expected west of 105W through Saturday, except for a narrow 
swath of fresh NW winds forecast near 19.5N105.5W briefly on 
Friday evening. 

Gulf of Tehuantepec: Strong to near gale force northerly winds 
will continue across and downstream of the Gulf of Tehuantepec 
through sunrise on Saturday morning, with the maximum seas 
building to 10-11 ft near 14.5N95W overnight. The next gap high 
wind event is expected begin Monday night, with model guidance 
suggesting gale conditions are possible Tuesday evening.

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

Gulf of Papagayo: A moderately large area of strong ne winds is 
expected across the waters from 09N to 12N between 86W and 90W 
mainly during late night hours tonight and again Friday night. 
Guidance suggests one last brief nocturnal surge Saturday night. 
These strong winds will create NE swell that will propagate SW, 
resulting in an area of combined seas to 9 ft near 08N93W.  

Gulf of Panama: Moderate to fresh nocturnal flow is expected the 
next few nights. 
  
Light to gentle winds and combined seas of 4-6 ft are occurring 
elsewhere, outside of NE swell originating near the gap winds. 

REMAINDER OF THE AREA...

Nearly stationary high pressure centered near 33N131W is 
maintaining a broad ridge over the forecast area. A small area 
of strong ne trades across the tropics near 15N138W will 
diminish to a fresh breeze tonight. Mixed swell will result in 
combined seas of 5 to 8 ft across the area through Sunday night.
 
$$ 
Mundell