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Eastern North Pacific Tropical Weather Discussion (Text)



000
AXPZ20 KNHC 290917
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Wed Mar 29 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 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE... 

The ITCZ axis extends from 06N88W to 02N102W to 02N128W. An area 
of scattered moderate isolated strong convection not associated 
with the ITCZ is west of Bolivia from 01S to 03S east of 86W. 

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure north of the area extends a ridge southeast to 
near the Revillagigedo Islands. The pressure gradient between 
the ridge and lower pressure inland over Mexico is supporting 
fresh to strong N-NW winds west of Baja California. Long period 
NW swell continues to propagate across the offshore waters west 
of Baja California building seas to 11-13 ft. The high pressure 
will remain nearly stationary over the next 24 to 48 hours, then 
shift westward Thursday night and Friday. Additional pulses of 
NW swell will build combined seas to 11-12 ft across offshore 
zones PMZ009 and PMZ011. 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 days across Central America. 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 1030 mb high pressure located north of area near 34N133W 
dominates the northern half of the forecast area. The pressure 
gradient between the high and lower pressure near the equator is 
supporting fresh to strong trades from roughly 11N to 22N west 
of 128W. Seas in this area are 8-11 ft, in a mix of long period 
NW swell and NE wind waves. The aerial extent of the trades will 
diminish through early Thursday as the high moves west and 
weakens slightly. Marine conditions over the forecast region 
will change little during the next 48 hours under the influence 
of this broad ridge.

$$
Mundell


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Page last modified: Wednesday, 29-Mar-2017 09:17:35 UTC