867 
FZPN28 KNHC 210836
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
136 AM PDT Mon Sep 21 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.

PMZ101-212045-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
136 AM PDT Mon Sep 21 2020

.SYNOPSIS...Gentle to moderate monsoonal flow will prevail over
the waters generally south of 11N for the next several days
along with southwest swell. 

$$

PMZ111-212045-
Guatemala and El Salvador to 250 nm offshore-
136 AM PDT Mon Sep 21 2020

.TODAY...Variable winds less than 5 kt. Seas 5 to 7 ft in S to
SW swell. Period 19 seconds. Scattered showers and isolated
thunderstorms. 
.TONIGHT...SE winds 10 kt, shifting to SW to W late.
Seas 5 to 7 ft in S to SW swell. Period 18 seconds. 
.TUE...W to NW winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 18 seconds. Scattered showers and isolated thunderstorms. 
.TUE NIGHT...SW to W winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 17 seconds. Scattered showers and isolated
thunderstorms. 
.WED...W winds 10 kt. Seas 5 to 7 ft in S to SW swell. Period
16 seconds. 
.WED NIGHT...SW to W winds 10 kt. Seas 6 to 8 ft in S to SW
swell. Period 16 seconds. 
.THU...SW winds 10 kt. Seas 6 to 8 ft in S to SW swell. Period
16 seconds. 
.THU NIGHT...SW to W winds 10 kt. Seas 5 to 7 ft in S to SW
swell. Period 18 seconds. 
.FRI...SW winds 10 kt. Seas 5 to 7 ft in S to SW swell. Period
18 seconds. 
.FRI NIGHT...SW to W winds 10 kt. Seas 5 to 7 ft in S to SW
swell. Period 18 seconds. 

$$

PMZ113-212045-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
136 AM PDT Mon Sep 21 2020

.TODAY...NE to E winds 15 to 20 kt Offshore Gulf of Papagayo,
and N to NE 10 to 15 kt Elsewhere. Seas 5 to 7 ft in SW swell.
Period 19 seconds. Scattered showers and isolated thunderstorms. 
.TONIGHT...NW winds 10 kt. Seas 5 to 7 ft in SW swell. Period
18 seconds. Scattered showers and isolated thunderstorms. 
.TUE...NE to E winds 10 to 15 kt Offshore Gulf of Papagayo, and
NW 10 kt Elsewhere. Seas 5 to 7 ft in S to SW swell. Period
18 seconds. Scattered showers and isolated thunderstorms. 
.TUE NIGHT...W winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 17 seconds. Scattered showers and isolated
thunderstorms. 
.WED...W winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 16 seconds. 
.WED NIGHT...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW
swell. Period 16 seconds. 
.THU...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 16 seconds. 
.THU NIGHT...SW winds 10 to 15 kt. Seas 6 to 8 ft in SW swell.
Period 18 seconds. 
.FRI...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period
18 seconds. 
.FRI NIGHT...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
SW swell. Period 18 seconds. 

$$

PMZ115-212045-
North Costa Rica to West Panama to 250 nm offshore-
136 AM PDT Mon Sep 21 2020

.TODAY...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. Scattered showers and isolated thunderstorms. 
.TONIGHT...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 18 seconds. Scattered thunderstorms. 
.TUE...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 17 seconds. Scattered thunderstorms. 
.TUE NIGHT...SW to W winds 15 to 20 kt. Seas 5 to 7 ft. Period
16 seconds. Numerous showers and scattered thunderstorms. 
.WED...SW winds 15 to 20 kt. Seas 5 to 7 ft. Period 16 seconds. 
.WED NIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft. Period
15 seconds. 
.THU...SW winds 15 to 20 kt. Seas 6 to 8 ft in SW swell. Period
19 seconds. 
.THU NIGHT...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in SW
swell. Period 19 seconds. 
.FRI...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in SW swell.
Period 18 seconds. 
.FRI NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 

$$

PMZ117-212045-
East Panama and Colombia including the Gulf of Panama-
136 AM PDT Mon Sep 21 2020

.TODAY...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. Scattered showers and thunderstorms. 
.TONIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell.
Period 18 seconds. Scattered and thunderstorms. 
.TUE...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period
18 seconds. Scattered showers and thunderstorms. 
.TUE NIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft. Period
17 seconds. Scattered showers and thunderstorms.
.WED...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period
16 seconds. 
.WED NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell.
Period 16 seconds. 
.THU...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. 
.THU NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. 
.FRI...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 18 seconds. 
.FRI NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 

$$

PMZ119-212045-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
136 AM PDT Mon Sep 21 2020

.TODAY...Gulf of Guayaquil, variable winds less than 5 kt,
becoming SW to W 10 kt in the afternoon. Elsewhere, S to SW
winds 10 to 15 kt. Seas 4 to 6 ft. Period 18 seconds. 
.TONIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 
.TUE...Gulf of Guayaquil, variable winds less than 5 kt,
becoming W 10 kt in the afternoon. Elsewhere, S to SW winds
10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. 
.WED...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.WED NIGHT...SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period
15 seconds. 
.THU...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
18 seconds. 
.THU NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. 
.FRI...SW winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
18 seconds. 
.FRI NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 17 seconds. 

$$

PMZ121-212045-
Ecuador between 250 and 500 nm offshore-
136 AM PDT Mon Sep 21 2020

.TODAY...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 18 seconds.
.TONIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
17 seconds. 
.TUE...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. 
.TUE NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.WED...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 15 seconds. 
.WED NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 17 seconds. 
.THU...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
18 seconds. 
.THU NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 18 seconds. 
.FRI...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
18 seconds. 
.FRI NIGHT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 17 seconds. 

$$

PMZ123-212045-
Offshore Galapagos Islands-
136 AM PDT Mon Sep 21 2020

.TODAY...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 18 seconds. 
.TONIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period
17 seconds. 
.TUE...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. 
.TUE NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.WED...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 15 seconds. 
.WED NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 18 seconds. 
.THU...S winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 18 seconds. 
.THU NIGHT...S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 18 seconds. 
.FRI...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 17 seconds. 
.FRI NIGHT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 16 seconds. 

$$

Forecaster Aguirre