719
FZPN28 KNHC 210919
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
219 AM PDT Thu Aug 21 2025

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.

PMZ101-212130-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
219 AM PDT Thu Aug 21 2025

.SYNOPSIS...Light to gentle winds will prevail across the waters
north of 05N through the weekend, except for moderate to fresh
winds pulsing in the Gulf of Papagayo at night starting tonight.
Gentle to moderate winds are expected south of 05N. Cross-
equatorial southerly swell will propagate across the regional
waters, keeping seas in the moderate range through Fri, except in
the lee of the Galapagos Islands where slight seas are expected.
Another round of large swell will move into the waters off
Ecuador and Colombia by late Fri, and reach the offshore waters
of Central America by Sun.

$$

PMZ111-212130-
Guatemala and El Salvador to 250 nm offshore-
219 AM PDT Thu Aug 21 2025

.TODAY...Variable winds less than 5 kt. Seas 4 to 6 ft in S to
SW swell. Period 14 seconds.
.TONIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S to
SW swell. Period 17 seconds. Scattered showers and isolated
tstms through the night.
.FRI...Variable winds less than 5 kt. Seas 4 to 6 ft in S swell.
Period 16 seconds.
.FRI NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S
swell. Period 15 seconds. Scattered showers and isolated tstms
through the night.
.SAT...E to SE winds 10 kt. Seas 4 to 6 ft in S swell. Period
14 seconds.
.SAT NIGHT...SE winds 10 kt. Seas 4 to 6 ft in S swell. Period
17 seconds.
.SUN...E to SE winds 10 kt. Seas 4 to 6 ft in S swell. Period
19 seconds.
.SUN NIGHT...E to SE winds 10 kt. Seas 5 to 7 ft in S swell.
Period 19 seconds.
.MON...E winds 10 to 15 kt. Seas 6 to 8 ft in S swell. Period
18 seconds.
.MON NIGHT...E winds 10 to 15 kt. Seas 6 to 8 ft in S swell.
Period 16 seconds.

$$

PMZ113-212130-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
219 AM PDT Thu Aug 21 2025

.TODAY...E winds 10 to 15 kt in Gulf of Papagayo. Elsewhere N
winds 10 to 15 kt, shifting to S to SW in the afternoon. Seas 4
to 6 ft. Period 14 seconds. Scattered showers and isolated tstms
through the day.
.TONIGHT...E winds 15 to 20 kt in Gulf of Papagayo, diminishing
to 10 to 15 kt. Elsewhere S winds 10 to 15 kt, shifting to W to
NW late. Seas 4 to 6 ft in S swell. Period 17 seconds. Scattered
showers and isolated tstms through the night.
.FRI...NE winds 10 kt, shifting to S in the afternoon. Seas
3 to 5 ft. Period 16 seconds. Scattered showers and isolated
tstms through the day.
.FRI NIGHT...E winds 15 to 20 kt in Gulf of Papagayo. Elsewhere
SE to S winds 10 to 15 kt. Seas 4 to 6 ft in S swell. Period 16
seconds. Scattered showers and isolated tstms through the night.
.SAT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 14 seconds.
.SAT NIGHT...E winds 15 to 20 kt in Gulf of Papagayo. Elsewhere S
winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period 12 seconds.
.SUN...SE to S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 15 seconds.
.SUN NIGHT...E winds 10 to 15 kt in Gulf of Papagayo. Elsewhere S
winds 10 kt. Seas 5 to 7 ft in S swell. Period 16 seconds.
.MON...SE winds 10 to 15 kt. Seas 6 to 8 ft in S swell. Period
18 seconds.
.MON NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft in S swell.
Period 17 seconds.

$$

PMZ115-212130-
North Costa Rica to West Panama to 250 nm offshore-
219 AM PDT Thu Aug 21 2025

.TODAY...SW winds 10 kt. Seas 5 to 7 ft in S swell. Period
14 seconds. Scattered showers and isolated tstms through the
day.
.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 through
the night.
.FRI...SW winds 10 to 15 kt. Seas 6 to 8 ft in S swell. Period
16 seconds. Scattered tstms through the day.
.FRI NIGHT...SW to W winds 10 kt Near the Azuero Peninsula, and
SW 15 to 20 kt Elsewhere. Seas 6 to 8 ft in S swell. Period
15 seconds. Scattered tstms through the night.
.SAT...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 12 seconds.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 12 seconds.
.SUN...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 15 seconds.
.SUN NIGHT...SW to W winds 10 kt. Seas 6 to 9 ft in S to SW
swell. Period 18 seconds.
.MON...SW to W winds 10 kt. Seas 7 to 10 ft in S to SW swell.
Period 17 seconds.
.MON NIGHT...W to NW winds 10 kt. Seas 7 to 10 ft in S swell.
Period 16 seconds.

$$

PMZ117-212130-
East Panama and Colombia including the Gulf of Panama-
219 AM PDT Thu Aug 21 2025

.TODAY...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 14 seconds. Scattered showers and isolated tstms through
the day.
.TONIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 17 seconds. Scattered tstms through the night.
.FRI...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 17 seconds. Scattered showers and isolated tstms through
the day.
.FRI NIGHT...SW winds 15 to 20 kt. Seas 6 to 8 ft in S to SW
swell. Period 16 seconds. Numerous showers and scattered tstms
through the night.
.SAT...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 13 seconds.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 14 seconds.
.SUN...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 17 seconds.
.SUN NIGHT...SW to W winds 10 kt. Seas 7 to 10 ft in S to SW
swell. Period 16 seconds.
.MON...SW winds 10 kt. Seas 7 to 10 ft in S to SW swell. Period
16 seconds.
.MON NIGHT...W winds 10 kt. Seas 7 to 10 ft in S to SW swell.
Period 16 seconds.

$$

PMZ119-212130-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
219 AM PDT Thu Aug 21 2025

.TODAY...SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 14 seconds.
.TONIGHT...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 17 seconds.
.FRI...W winds 10 kt Gulf of Guayaquil, and S to SW 15 to 20 kt
Elsewhere. Seas 5 to 7 ft in S to SW swell. Period 16 seconds.
.FRI NIGHT...SW to W winds 10 to 15 kt Gulf of Guayaquil, and S
to SW 15 to 20 kt Elsewhere. Seas 5 to 7 ft in S to SW swell.
Period 15 seconds.
.SAT...S to SW winds 15 to 20 kt. Seas 6 to 8 ft in S to SW
swell. Period 12 seconds.
.SAT NIGHT...S to SW winds 10 to 15 kt. Seas 7 to 10 ft in S to
SW swell. Period 14 seconds.
.SUN...S to SW winds 10 to 15 kt. Seas 8 to 12 ft in S to SW
swell. Period 18 seconds.
.SUN NIGHT...S to SW winds 10 to 15 kt. Seas 8 to 12 ft in S to
SW swell. Period 17 seconds.
.MON...S to SW winds 10 to 15 kt. Seas 7 to 11 ft in S to SW
swell. Period 15 seconds.
.MON NIGHT...S to SW winds 10 to 15 kt. Seas 7 to 10 ft in S to
SW swell. Period 14 seconds.

$$

PMZ121-212130-
Ecuador between 250 and 500 nm offshore-
219 AM PDT Thu Aug 21 2025

.TODAY...S winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period
16 seconds.
.TONIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 16 seconds.
.FRI...S winds 15 kt. Seas 5 to 7 ft in S swell. Period
15 seconds.
.FRI NIGHT...S winds 15 kt. Seas 6 to 8 ft in S swell. Period
14 seconds.
.SAT...S winds 15 kt. Seas 6 to 9 ft in S swell. Period
12 seconds.
.SAT NIGHT...S winds 15 kt. Seas 7 to 11 ft in S swell. Period
14 seconds.
.SUN...SE to S winds 10 to 15 kt. Seas 8 to 12 ft in S to SW
swell. Period 18 seconds.
.SUN NIGHT...SE to S winds 10 to 15 kt. Seas 9 to 13 ft in S
swell. Period 16 seconds.
.MON...SE to S winds 10 kt. Seas 7 to 11 ft in S swell. Period
14 seconds.
.MON NIGHT...SE to S winds 10 to 15 kt. Seas 7 to 10 ft in S
swell. Period 14 seconds.

$$

PMZ123-212130-
Offshore Galapagos Islands-
219 AM PDT Thu Aug 21 2025

.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 15 seconds.
.FRI...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 14 seconds.
.FRI NIGHT...SE to S winds 15 kt. Seas 6 to 8 ft in S swell.
Period 14 seconds.
.SAT...SE to S winds 15 to 20 kt. Seas 6 to 9 ft in S swell.
Period 10 seconds.
.SAT NIGHT...SE to S winds 10 to 15 kt. Seas 7 to 11 ft in S
swell. Period 14 seconds.
.SUN...SE winds 10 to 15 kt. Seas 9 to 13 ft in S swell. Period
14 seconds.
.SUN NIGHT...SE winds 10 to 15 kt. Seas 9 to 13 ft in S swell.
Period 14 seconds.
.MON...SE winds 10 to 15 kt. Seas 7 to 11 ft in S swell. Period
13 seconds.
.MON NIGHT...SE winds 10 kt. Seas 7 to 10 ft in S swell. Period
13 seconds.

$$

Forecaster Christensen