Tropical Weather Discussion
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891
AXPZ20 KNHC 300204
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
220 UTC Thu Mar 30 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 0000 UTC surface analysis and satellite imagery through
0200 UTC.

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

Surface trough reaches from 07N87W to 04N104W. Scattered moderate
convection is noted within 60 nm either side of trough between
90W and 95W.

Intertropical convergence zone extends from 13N105W to 01N130W.
Scattered moderate convection is within 30 nm either side of the
trough between 85W and 125W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A ridge extends from 1028 mb high pressure centered near 32N135W
southeastward to the Revillagigedo Islands. Moderate breezes
will persist off the Baja California peninsula into Friday, then
increase off Baja California Norte late Friday through Saturday
in the wake of a weak front moving eastward across the region.
Winds will diminish through early next week thereafter as high
pressure builds over the area. Seas will remain 8 to 9 ft in
northwest swell off the entire Baja California coastline through
Thursday, before decaying below 8 ft off Baja California Sur.
Swell will remain 7 to 9 ft off Baja California Norte however
through the period.

The passing cold front will support a brief round of strong
northwest winds and near gale westerly gap winds over the far
northern Gulf of California Thursday night into Friday.
Elsewhere gentle to moderate northwest flow will persist across
the Gulf of California through the period.

Light to gentle winds will prevail elsewhere through the rest of
the week.

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

Gap wind events are not expected to be very significant the next
few several across the Central American coastal and offshore
waters. Light to gentle winds and 3-5 ft seas are expected to
prevail over the forecast waters the next several days.

REMAINDER OF THE AREA...

Strong 1028 mb high pressure located near 32N135W dominates the
forecast waters north of 20N. The pressure gradient between the
high and lower pressure near the equator is supporting fresh
trade winds from roughly 12N to 20N west of 135W. Seas in this
area are 8 to 11 ft, in a mix of long period northwest swell and
shorter period northeast wind waves. The aerial extent of the
trades will diminish through Thursday as the high moves west and
weakens slightly. Marine conditions over the forecast region will
change little during the next few days under the influence of
this broad ridge.

Looking ahead, high pressure will strengthen late in the
upcoming weekend with a belt of fresh to strong northeast winds
developing around it across the northwest and north central
waters Sunday.

$$
CHRISTENSEN




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