000
AXPZ20 KNHC 170801
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Fri Apr 17 2020

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
0800 UTC.

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

A surface trough extends from near the Panama/Colombia border at
07N78W to 09N90W to low pressure near 10N108W to 05N115W. The 
ITCZ continues from 05N115W to 02N122W to 04N132W. Scattered 
moderate and isolated strong convection is noted within 09N94W to
05N84W to 00N90W to 03N99W to 09N94W and also within 240 nm in
the NW semicircle of the low. Scattered moderate convection is
noted S of the trough and ITCZ between 112W and 126W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

Strong SW winds will affect the Gulf of California N of 30N 
early today and more so tonight into early Sat in response to a 
cold front passing through this evening. A high pressure ridge W
of Baja California will weaken and shift SE through Sun in 
response to another cold front approaching from 30N140W. 
Otherwise, gentle to moderate NW winds are expected W of Baja 
California, with light to gentle winds prevailing elsewhere into
early next week. NW winds W of Baja California will increase to 
moderate to fresh Tue and Tue night as high pressure builds in 
from the NW. Seas in this same area will build to between 7 and 9
ft.

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

Winds will pulse to fresh to strong at night across the Papagayo
region through early Sat due to a high pres ridge N of the 
Caribbean. Light to gentle winds will prevail elsewhere. 
Scattered showers and isolated thunderstorms affecting the waters
adjacent to Costa Rica and Panama will shift E over the waters 
adjacent to Colombia later today. Boaters navigating the waters 
in these areas should refer to forecasts and statements issued by
your local meteorological services.

REMAINDER OF THE AREA...

High pressure of 1025 mb centered near 29N141W will maintain 
moderate to fresh winds from 06N to 22N W of 125W until Sat, 
then winds in this region will weaken as the high shifts SE in 
advance of a cold front entering the NW corner of the discussion 
area. Gentle to moderate winds are expected elsewhere for the 
next several days.

Wave heights range between 6 and 7 ft between 06N and 22N and W 
of 125W, except up to 8 ft along and near 140W, and 4 to 6 ft 
elsewhere. Little change in seas is expected through Sun, then 
long period NW swell could combine with trade wind waves 
generated by strengthening high pressure to the N to cause seas N
of 10N and W of 130W to build to between 8 and 9 ft Mon,
expanding eastward to 120W on Tue.

$$
Lewitsky