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000
AXPZ20 KNHC 250947
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 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 0600 UTC surface analysis and satellite imagery through 0945 UTC.


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

A surface trough extends from 06N85W to 06N98W where scatterometer winds indicate that the ITCZ forms and continues and continues w to beyond 04N140W. Scattered moderate isolated strong convection is noted in clusters within 90 nm of 02N78W and 05N81W, and within 75 nm either side of a line from 05N101W to 07N106W to 10N120W to 07N132W.


...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Strong to near gale force northwesterly winds are observed across the discussion waters n of 29.5N w of the Baja Peninsula, with 8 to 13 ft seas. Fresh to strong nw flow is expected elsewhere n of 25.5N today. The pressure gradient will relax some tonight through Wed before tightening again on Wed night. Expect strong nw winds to spread s to along 28N to the e of 125W on Thu with seas building to 10 to 15 ft by early Fri. The gradient should relax Fri night with associated seas subsiding to less than 8 ft on Sun.

Gulf of California: Fresh to strong sw winds are expected through late morning with seas building to about 5 ft. Mostly gentle to moderate southerly flow elsewhere will clock to the nw on Wed.

Gulf of Tehuantepec: Gentle to moderate southerly flow expected this week.

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

Mostly a gentle onshore breeze expected during the day becoming offshore along the coasts at night. Combined seas of 3 to 5 ft in mixed SW and NW swell forecast during the next several days.

REMAINDER OF THE AREA...

A ridge will meander from near 32N140W to 11N102W. Strong nw winds, and seas of 8 to 12 ft expected n of 28N e of 123W through early Wed, with similar conditions n of 28N e of 126W on Thu through Fri night. Fresh ne trades expected s of the ridge and n of the ITCZ will seas building to 8 ft w of 130W late this week.

$$ Nelson

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