Tropical Weather Discussion

axpz20 knhc 251516

Tropical weather discussion 
NWS National Hurricane Center Miami FL
1605 UTC Tue Apr 25 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 1200 UTC surface analysis and satellite imagery through 
1500 UTC.

...Intertropical convergence zone/monsoon trough... 

A surface trough extends from 09n84w to 06n101w, where ascat 
winds indicate that the ITCZ forms and continues and continues 
west to beyond 04n140w. Scattered moderate convection is noted 
in clusters between 04n and 06n east of 114w.     


Offshore waters within 250 nm of Mexico...

Strong northwesterly winds are observed across the discussion 
waters north of 29n west of the Baja Peninsula, with 8 to 13 ft 
seas. Fresh to strong NW flow is expected elsewhere north of 25n 
today. The pressure gradient will relax some tonight through Wed 
then tighten again on Wednesday night. Expect strong NW winds to 
spread southward to along 28n east of 125w on Thursday with seas 
building to 10-15 ft by early Friday. The gradient should relax 
Friday night with seas subsiding to less than 8 ft on Sunday.

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

A gentle onshore breeze is expected during the day, becoming 
offshore along the coast at night. Combined seas of 3-5 ft in 
mixed SW and NW swell is forecast for the next several days.

Remainder of the area...

a ridge will meander from near 32n140w to 11n102w. Strong NW 
winds, and 8-12 ft seas are expected north of 28n east of 123w 
through early Wednesday, with similar conditions expected north 
of 28n and east of 126w Thursday through Friday night. Fresh NE 
trades are expected south of the ridge and north of the ITCZ, 
with seas building to 8 ft west of 130w later in the week. SW 
swell from the southern hemisphere will approach the Equator 
near between 105w and 125w Thursday night and Friday.



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