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Eastern North Pacific Tropical Weather Discussion



000
AXPZ20 KNHC 232225
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
2205 UTC Thu Feb 23 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 
2130 UTC.

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

There is no ITCZ over the forecast waters north of the equator. 

...DISCUSSION...   

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Winds and seas have fallen across the Gulf of Tehuantepec region 
today as the pressure gradient continues to weaken, and 
southerly return flow has set up across the western Gulf of 
Mexico. Elsewhere, a tight pressure gradient between high 
pressure west of the Baja California peninsula and a trough 
along western Mexico continues. Afternoon ASCAT data depicts 
strong NWly winds off the central coast of Baja California 
extending south to near 24N, as a result of this tight gradient. 
Strong winds also prevail over the central Gulf of California. 
Seas off the coast of Baja California Norte are in the 8-12 ft 
range in mixed NW swell and generally 4-6 ft from the 
Tehuantepec region to entrance to the Gulf of California. The 
area of high pressure northwest of the area will weaken by 
Saturday. This will loosen the pressure gradient over the area, 
and winds will diminish below advisory criteria. Northwest swell 
will continue to prevail off the west coast of Baja California, 
maintaining seas 8 ft or greater through Friday night. Seas are 
expected to subside below 8 ft by late Friday night. Fresh 
northwesterly swell will arrive offshore Baja California Norte 
by Monday.

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

Light to gentle winds will prevail through Saturday. Winds will
freshen off the coast of Central America Saturday night through 
Sunday night as offshore gap winds develop in response to 
building high pressure over the Caribbean.

REMAINDER OF THE AREA... 

Slowly subsiding NW swell continues to propagate across the 
forecast waters. Seas greater than 8 ft cover much of the 
forecast waters north of 10N and west of 115W. Areal coverage of
seas greater than 8 ft continues to decrease. By Friday, seas 
will subside below 8 ft over most of the forecast area, except 
over the northwest waters as a cold front moves into the area
and ushers in fresh northwest swell. Combined seas associated 
with this swell will peak around 12 ft Saturday night over the
northwest waters. Strong to near gale winds are expected both 
ahead of, and behind, the front as it crosses the northern waters
this weekend. 

$$
Stripling