909
FZPN28 KNHC 170818
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
118 AM PDT Sat May 17 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.

PMZ101-172030-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
118 AM PDT Sat May 17 2025

.SYNOPSIS...Abundant moisture drawn in by a very moist and
unstable southerly wind flow will persist across the offshore
waters of Nicaragua, Costa Rica, Panama and Colombia through the
weekend, supporting the development of scattered showers and
thunderstorms over this area. Gentle to moderate winds will
prevail across the region through Sun, then diminish on Mon.
Slight to moderate seas, primarily in SW swell, are expected.

$$

PMZ111-172030-
Guatemala and El Salvador to 250 nm offshore-
118 AM PDT Sat May 17 2025

.TODAY...Variable winds less than 5 kt, becoming NE 10 kt in the
afternoon. Seas 4 to 6 ft in S to SW swell. Period 15 seconds.
Scattered showers and isolated tstms through the day.
.TONIGHT...E to SE winds 10 kt in the evening, becoming variable
winds less than 5 kt. Seas 4 to 6 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms through the
night.
.SUN...Variable winds less than 5 kt, becoming NE to E 10 kt in
the afternoon. Seas 4 to 6 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms through the
day.
.SUN NIGHT...E to SE winds 10 kt in the evening, becoming
variable winds less than 5 kt. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds.
.MON...E winds 10 kt. Seas 3 to 5 ft. Period 14 seconds.
.MON NIGHT...SE winds 10 kt. Seas 3 to 5 ft. Period 15 seconds.
.TUE...E to SE winds 10 kt. Seas 3 to 5 ft. Period 15 seconds.
.TUE NIGHT...SE to S winds 10 kt. Seas 3 to 5 ft. Period
15 seconds.
.WED...SE winds 10 kt. Seas 3 to 5 ft. Period 16 seconds.
.WED NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S
to SW swell. Period 17 seconds.

$$

PMZ113-172030-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
118 AM PDT Sat May 17 2025

.TODAY...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 15 seconds. Scattered showers and isolated tstms through
the day.
.TONIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft in S to SW swell.
Period 15 seconds. Scattered showers and isolated tstms through
the night.
.SUN...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms through the
day.
.SUN NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 14 seconds. Scattered showers and isolated tstms
through the night.
.MON...S winds 10 kt. Seas 3 to 5 ft. Period 14 seconds.
.MON NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
14 seconds.
.TUE...S winds 10 kt. Seas 3 to 5 ft. Period 14 seconds.
.TUE NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
15 seconds.
.WED...NE to E winds 10 kt Offshore Gulf of Papagayo, and
variable less than 5 kt Elsewhere. Seas 3 to 5 ft. Period
15 seconds.
.WED NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
to SW swell. Period 17 seconds.

$$

PMZ115-172030-
North Costa Rica to West Panama to 250 nm offshore-
118 AM PDT Sat May 17 2025

.TODAY...Near the Azuero Peninsula, variable winds less than
5 kt, becoming S to SW 10 kt in the afternoon. Elsewhere, S to
SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms.
.TONIGHT...SW winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 15 seconds. Scattered showers and isolated tstms through
the night.
.SUN...SW to W winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 15 seconds. Scattered showers and isolated tstms.
.SUN NIGHT...W winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds. Scattered showers and isolated tstms through
the night.
.MON...Variable winds less than 5 kt Near the Azuero Peninsula,
and SW to W 10 kt Elsewhere. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds.
.MON NIGHT...Variable winds less than 5 kt Near the Azuero
Peninsula, and SW to W 10 kt Elsewhere. Seas 3 to 5 ft. Period
14 seconds.
.TUE...Variable winds less than 5 kt. Seas 3 to 5 ft in S to SW
swell. Period 13 seconds.
.TUE NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
to SW swell. Period 13 seconds.
.WED...Variable winds less than 5 kt. Seas 3 to 5 ft in S to SW
swell. Period 16 seconds.
.WED NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S
to SW swell. Period 18 seconds.

$$

PMZ117-172030-
East Panama and Colombia including the Gulf of Panama-
118 AM PDT Sat May 17 2025

.TODAY...S winds 10 kt. Seas 5 to 7 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms through the
day.
.TONIGHT...Variable winds less than 5 kt, becoming SW 10 kt
late. Seas 5 to 7 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms through the
night.
.SUN...Gulf of Panama, variable winds less than 5 kt. Elsewhere,
S winds 10 kt, shifting to SW to W in the afternoon. Seas 5 to
7 ft in S to SW swell. Period 15 seconds. Scattered showers and
isolated tstms through the day.
.SUN NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S
to SW swell. Period 14 seconds. Scattered showers and isolated
tstms through the night.
.MON...SE to S winds 10 kt. Seas 3 to 5 ft. Period 14 seconds.
.MON NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
to SW swell. Period 14 seconds.
.TUE...Variable winds less than 5 kt Gulf of Panama, and SW to W
10 kt Elsewhere. Seas 3 to 5 ft. Period 13 seconds.
.TUE NIGHT...Variable winds less than 5 kt Gulf of Panama, and
SW to W 10 kt Elsewhere. Seas 3 to 5 ft. Period 13 seconds.
.WED...Variable winds less than 5 kt Gulf of Panama, and SW
10 kt Elsewhere. Seas 3 to 5 ft. Period 16 seconds.
.WED NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S
to SW swell. Period 18 seconds.

$$

PMZ119-172030-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
118 AM PDT Sat May 17 2025

.TODAY...Gulf of Guayaquil, variable winds less than 5 kt,
becoming W 10 kt in the afternoon. Elsewhere, SE to S winds
10 kt. Seas 5 to 7 ft in S to SW swell. Period 15 seconds.
Scattered showers and isolated tstms through the day.
.TONIGHT...S to SW winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 14 seconds.
.SUN...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 14 seconds.
.SUN NIGHT...S to SW winds 10 kt. Seas 5 to 7 ft in S to SW
swell. Period 14 seconds.
.MON...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds.
.MON NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 13 seconds.
.TUE...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 13 seconds.
.TUE NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds.
.WED...S to SW winds 10 kt. Seas 5 to 7 ft in SW swell. Period
18 seconds.
.WED NIGHT...S to SW winds 10 kt. Seas 5 to 7 ft in SW swell.
Period 17 seconds.

$$

PMZ121-172030-
Ecuador between 250 and 500 nm offshore-
118 AM PDT Sat May 17 2025

.TODAY...SE winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 15 seconds.
.TONIGHT...SE to S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 14 seconds.
.SUN...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds.
.SUN NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 14 seconds.
.MON...SE winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
13 seconds.
.MON NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 13 seconds.
.TUE...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds.
.TUE NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 16 seconds.
.WED...SE to S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 18 seconds.
.WED NIGHT...SE to S winds 10 kt. Seas 5 to 7 ft in S to SW
swell. Period 17 seconds.

$$

PMZ123-172030-
Offshore Galapagos Islands-
118 AM PDT Sat May 17 2025

.TODAY...SE to S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 15 seconds.
.TONIGHT...SE to S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 14 seconds.
.SUN...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 15 seconds.
.SUN NIGHT...SE winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 15 seconds.
.MON...SE winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
14 seconds.
.MON NIGHT...SE winds 10 kt. Seas 4 to 6 ft in SW swell. Period
13 seconds.
.TUE...SE winds 10 kt. Seas 4 to 6 ft in SW swell. Period
15 seconds.
.TUE NIGHT...SE winds 10 kt. Seas 5 to 7 ft in SW swell. Period
16 seconds.
.WED...SE winds 10 kt. Seas 5 to 7 ft in SW swell. Period
17 seconds.
.WED NIGHT...SE winds 10 kt. Seas 5 to 7 ft in SW swell. Period
16 seconds.

$$

Forecaster ERA