904 
FZPN28 KNHC 171622
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
922 AM PDT Thu Sep 17 2020

Offshore Waters Forecast for the E Pacific within 250 nm of
Central America, Colombia, and within 750 nm of Ecuador

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

PMZ101-180430-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
922 AM PDT Thu Sep 17 2020

.SYNOPSIS...Gentle to moderate monsoonal flow will prevail over
the waters generally S of 11N for the next several days.
Combined seas near 8 ft south of Panama will subside through
tonight.

$$

PMZ111-180430-
Guatemala and El Salvador to 250 nm offshore-
922 AM PDT Thu Sep 17 2020

.TODAY...W to NW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell.
Period 18 seconds. Scattered showers and isolated tstms. 
.TONIGHT...W to NW winds 10 kt. Seas 5 to 7 ft in SW swell.
Period 17 seconds. Scattered showers and isolated tstms. 
.FRI...NE to E winds 10 kt, shifting to S to SW in the
afternoon. Seas 5 to 7 ft in S to SW swell. Period 16 seconds.
Scattered showers and isolated tstms. 
.FRI NIGHT...Variable winds less than 5 kt, becoming SW 10 kt
late. Seas 4 to 6 ft in SW swell. Period 16 seconds.
Scattered showers and isolated tstms. 
.SAT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
15 seconds. 
.SAT NIGHT...SW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 15 seconds. 
.SUN...SE to S winds 10 kt. Seas 4 to 6 ft in S swell. Period
20 seconds. 
.SUN NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 20 seconds. 
.MON...E to SE winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 19 seconds. 
.MON NIGHT...E to SE winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 19 seconds. 

$$

PMZ113-180430-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
922 AM PDT Thu Sep 17 2020

.TODAY...Variable winds less than 5 kt Offshore Gulf of
Papagayo, and SW to W 10 to 15 kt Elsewhere. Seas 5 to 7 ft in S
to SW swell. Period 18 seconds. Scattered showers and isolated
tstms. 
.TONIGHT...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 17 seconds. Scattered showers and isolated tstms. 
.FRI...Variable winds less than 5 kt Offshore Gulf of Papagayo,
and SW 10 to 15 kt Elsewhere. Seas 4 to 6 ft. Period 16 seconds.
Scattered showers and isolated tstms. 
.FRI NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. Scattered showers and isolated tstms. 
.SAT...Variable winds less than 5 kt Offshore Gulf of Papagayo,
and SW 10 to 15 kt Elsewhere. Seas 4 to 6 ft. Period 15 seconds.
.SAT NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.SUN...Variable winds less than 5 kt Offshore Gulf of Papagayo,
and SW to W 10 kt Elsewhere. Seas 4 to 6 ft. Period 20 seconds. 
.SUN NIGHT...Variable winds less than 5 kt Offshore Gulf of
Papagayo, and SW 10 kt Elsewhere. Seas 4 to 6 ft. Period
20 seconds. 
.MON...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
19 seconds. 
.MON NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. 

$$

PMZ115-180430-
North Costa Rica to West Panama to 250 nm offshore-
922 AM PDT Thu Sep 17 2020

.TODAY...SW to W winds 10 to 15 kt. Seas 6 to 8 ft in S to SW
swell. Period 18 seconds. Scattered showers and isolated tstms. 
.TONIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft. Period
17 seconds. Scattered showers and isolated tstms.
.FRI...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms. 
.FRI NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 17 seconds. Scattered showers and isolated tstms. 
.SAT...SW winds 15 kt. Seas 4 to 6 ft. Period 19 seconds. 
.SAT NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.SUN...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 20 seconds. 
.SUN NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
20 seconds. 
.MON...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 19 seconds. 
.MON NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. 

$$

PMZ117-180430-
East Panama and Colombia including the Gulf of Panama-
922 AM PDT Thu Sep 17 2020

.TODAY...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 18 seconds. Scattered showers and isolated tstms. 
.TONIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell.
Period 17 seconds. Scattered showers and isolated tstms. 
.FRI...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period
16 seconds. Scattered tstms. 
.FRI NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. Scattered showers and isolated tstms.
.SAT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 15 seconds. 
.SAT NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 
.SUN...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 20 seconds. 
.SUN NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
20 seconds. 
.MON...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. 
.MON NIGHT...W to NW winds 10 kt Gulf of Panama, and SW to W
15 to 20 kt Elsewhere. Seas 4 to 6 ft. Period 19 seconds. 

$$

PMZ119-180430-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
922 AM PDT Thu Sep 17 2020

.TODAY...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 17 seconds. 
.TONIGHT...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 16 seconds. 
.FRI...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. 
.FRI NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.SAT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.SAT NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.SUN...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
20 seconds. 
.SUN NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
20 seconds. 
.MON...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. 
.MON NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 

$$

PMZ121-180430-
Ecuador between 250 and 500 nm offshore-
922 AM PDT Thu Sep 17 2020

.TODAY...S winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period
17 seconds. 
.TONIGHT...S winds 10 kt. Seas 5 to 7 ft in S swell. Period
13 seconds. 
.FRI...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 14 seconds. 
.FRI NIGHT...S winds 10 kt. Seas 4 to 6 ft in S swell. Period
14 seconds. 
.SAT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 14 seconds. 
.SAT NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.SUN...S winds 10 kt. Seas 4 to 6 ft in S swell. Period
19 seconds. 
.SUN NIGHT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 19 seconds. 
.MON...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 19 seconds. 
.MON NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 

$$

PMZ123-180430-
Offshore Galapagos Islands-
922 AM PDT Thu Sep 17 2020

.TODAY...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 16 seconds. 
.TONIGHT...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 16 seconds. 
.FRI...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in SE to S
swell. Period 15 seconds. 
.FRI NIGHT...S winds 10 kt. Seas 4 to 6 ft in S swell. Period
15 seconds. 
.SAT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 
.SAT NIGHT...S winds 10 kt. Seas 4 to 6 ft in S swell. Period
20 seconds. 
.SUN...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 20 seconds. 
.SUN NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 19 seconds. 
.MON...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 
.MON NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period
17 seconds. 

$$

Forecaster Christensen