Tropical Weather Discussion
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000
AXPZ20 KNHC 260945
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Wed Apr 26 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 08N83W to 06N88W where
scatterometer winds indicate that the northern ITCZ forms and
continues through 05N95W to 07N103W to 03N132W. A southern ITCZ
is analyzed from 03S104W to 03.4S116W. Scattered moderate
isolated strong convection is noted within 120 nm either side of
a line from 06N82W to 04N96W to 05N117W and also within 45 nm of
03S107W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Strong to near gale force northwesterly winds are observed
across the discussion waters n of 28.5N w of the Baja Peninsula,
with 8 to 11 ft seas. Fresh to locally strong nw flow is
expected elsewhere w of Baja today as well as strong surges off
Cabo San Lucas. The pressure gradient will relax this evening,
but quickly tighten again tonight. Expect strong nw winds to
spread s to along 28N to the e of 125W on Thu with seas building
to 9 to 15 ft with the highest seas near 32N120W Thu night
The gradient should begin to relax late Fri night with winds 20
kt or less late Sat, and associated seas subsiding to less than
8 ft to the s  of 30N on Sun night into Mon.

Gulf of California: Gentle to moderate southwesterly flow will
will clock to the nw today then become southerly again on Thu.

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 near 10N100W. Strong
nw winds, and seas of 8 to 12 ft expected n of 28N e of 124W
today through Fri. Fresh ne trades expected between the ridge
and the ITCZ will seas building to 8 ft this week. Southern
hemispheric swell in the form of 7 to 9 ft seas, will reach the
equator between 106W and 120W on Fri.

$$
Nelson



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