Tropical Weather Discussion

axpz20 knhc 251545

Tropical weather discussion
NWS National Hurricane Center Miami FL
1445 UTC Wed Apr 25 2018

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... 

Surface trough extends from 10n85w to 07n93w to 06n100w. The 
ITCZ extends from 06n100w to 08n120w to beyond 06n140w. 
Scattered moderate convection is noted within 75 nm on either 
side of the trough between 93w-100w. Another area of scattered 
moderate convection is observed within 240 nm to the north of the
ITCZ between 110w-124w. 


Offshore waters within 250 nm of Mexico...

A ridge west of Baja California will strengthen during this 
weekend. Moderate to fresh northwest flow in offshore waters will
become fresh to locally strong by Fri through Sat night. Fresh 
to strong northerly winds are possible in the Gulf of Tehuantepec
this weekend. Light to gentle W to NW winds are expected in the 
Gulf of California through Saturday. 

Offshore waters within 250 nm of Central America, Colombia, and 
within 750 nm of Ecuador... 

Fresh northeast nocturnal winds are expected in and downstream 
of the Gulf of papagayo through tonight, while gentle nocturnal 
flow is forecast to continue through the week downstream of the 
Gulf of Panama. Gentle to moderate offshore flow will prevail 
elsewhere N of 09n, and light to gentle SW winds are expected S 
of 09n. 

Remainder of the area... 

A cold front extends from 31n133w to 26n140w. This front will 
move slowly east and then dissipate later today. 7-9 ft NW swell
associated with the front will gradually subside through 
this evening. A ridge will build behind the front Thu and Fri. 
Fresh northeast trade winds and 7-9 ft seas are observed across 
the tropical waters between 07n and 18n, south of the subtropical
ridge and north of the the ITCZ. Little change is expected 
through the remainder of the week.

7-8 ft southerly swell observed south of the Equator between 90w 
and 120w will gradually subside through Thursday morning.




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