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Eastern North Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 262120
TWDEP

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Sun Mar 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 1800 UTC surface analysis and satellite imagery through
2100 UTC.

...INTERTROPICAL CONVERGENCE ZONE... 

The ITCZ extends from 03N121W to 01N140W. Scattered moderate 
convection is noted within 120 nm north of the ITCZ between 127W
and 135W. Similar convection is from 02N to 05N between 87W AND 
92W.

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure of 1028 mb centered near 33N148W extends a ridge 
southeast to near the Revillagigedo Islands. The pressure 
gradient between the ridge and a trough of low pressure over the
Gulf of California is supporting moderate to fresh winds west of
the Baja California peninsula with seas in the 6-8 ft range. 
Light to gentle winds with seas 2 ft or less prevails over the 
Gulf of California. Light winds with seas in the 4-6 ft range 
prevails elsewhere. The area of high pressure will further 
building early next week, which will tighten the pressure 
gradient and strengthen winds off the coast of Baja California 
Norte. Northwesterly swell will propagate into the waters off 
Baja California Norte Monday, and peak near 13 ft early Tuesday 
morning. 

Winds will strengthen over the northern Gulf of California early
Tuesday as the pressure gradient tightens before diminishing
Wednesday as the area of high pressure weakens slightly and
loosens the pressure gradient. Elsewhere, winds will generally 
be light to gentle with seas in the 4-6 ft range through the 
middle of next week. 

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

Fresh NE winds are expected over the Gulf of Papagayo during the 
late night hours tonight into the early morning hours Monday 
morning. Light to gentle winds and seas of 3-5 ft are expected 
elsewhere the next several days. 

REMAINDER OF THE AREA...

High pressure prevails over the northern waters. The pressure
gradient between this area of high pressure and the equatorial
trough is supporting fresh to strong trades over the tradewind
belt. Seas over this area are in the 8-10 ft range in a mix of
long period NW swell and NE wind waves. This area of trades will 
persist through Monday, but the aerial extent of the trades will
increase by Monday night as a high pressure located just north 
the area strengthens. At that time, the GFS computer model shows 
a high pressure of 1033 mb located near 35N131W.

$$
GR


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Page last modified: Sunday, 26-Mar-2017 21:20:54 UTC