000
AXPZ20 KNHC 290256
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
315 UTC Thu Mar 29 2018

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
0245 UTC.
  
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... 

A surface trough extends from 08N81W to 06N93W. The ITCZ axis 
continues from 06N93W to 04N100W to 05N120W to 05N140W. Scattered
moderate and isolated strong convection is within an area bounded
by 10N127W to 09N116W to 01N127W to 04N140W to 08N140W to 
10N127W.

...DISCUSSION...

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

High pressure of 1034 mb located well N of area near 43N133W 
extends a ridge SE across the forecast waters to near the 
Revillagigedo Islands. The pressure gradient between the ridge 
and lower pressures over Mexico will continue to support fresh to
locally strong NW winds across the southern Gulf of California, 
including the entrance of the Gulf through the rest of this 
evening. The pressure gradient will relax later tonight, 
allowing for winds to diminish slightly. On Thu, expect mainly 
moderate to fresh NW winds across the central and southern Gulf 
of California, with light and variable winds over the remainder 
of the Gulf. Gentle to moderate winds will prevail across the 
offshore waters W of Baja California, with seas subsiding to 4-7 
ft on Thu, and to 3-6 ft on Fri. Similar marine conditions are 
expected during the upcoming weekend into early next week.

Gulf of Tehuantepec: Light to gentle winds and seas of 4 to 7 ft
in long period SW swell will prevail through Fri. Then, high 
pressure building N of the region will induce a gap wind event 
beginning Fri evening, with minimal gale conditions possible late
Fri night through Sat night. Based on marine guidance, seas are 
forecast to build to 12 to 14 ft with this gap wind event by Sat 
morning. Conditions will improve through the day Sun through
early next week.

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

Gulf of Papagayo: Fresh to locally strong northeast nocturnal 
winds are expected this week and into the weekend, with seas 
building to as high as 8 ft downstream of the Gulf. Winds will 
then be moderate to fresh for Sun and Mon. 

Gulf of Panama: Pulsing N winds in the 20-25 kt range are 
expected again across the western part of the Gulf tonight. Then,
moderate to fresh N winds will prevail through Fri, slightly 
weaker thereafter.

Elsewhere, gentle to moderate offshore flow is expected generally
N of 07N, while light to gentle SW winds are forecast S of 07N. 

REMAINDER OF THE AREA... 

High pressure of 1034 mb located well N of area near 43N133W 
extends a ridge SE across the forecast waters to near the 
Revillagigedo Islands. The pressure gradient between the ridge 
and lower pressures in the vicinity of the ITCZ supports an area 
of fresh to strong trades from 13N to 19N W of 131W, with seas of
8 to 10 ft across this area. The pressure gradient will 
gradually improve during the next couple of days, with winds 20 
kt or less, and seas less than 8 ft, across most of the forecast 
region by Fri. Outside of the the gap wind regions, expect winds 
of 20 kt or less, and seas less than 8 ft during the upcoming 
weekend and into early next week.

$$
Lewitsky