000
FZPN28 KNHC 171708
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
1008 AM PDT Sun May 17 2026

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.

PMZ101-180515-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
1008 AM PDT Sun May 17 2026

.SYNOPSIS...Fresh NE to E gap winds in the Papagayo region will
pulse to strong, along with locally rough seas at night through 
Wed night. Elsewhere, gentle to moderate winds along with 
moderate seas in southerly swell are expected through midweek. 
Numerous showers and thunderstorms, some with strong gusty winds 
and heavy rain producing low visibilities, will remain over the 
offshore waters of Costa Rica, Panama and Colombia through at 
least Mon. At the same time, scattered showers and isolated 
thunderstorms are expected over the offshore waters of Nicaragua.

$$

PMZ111-180515-
Guatemala and El Salvador to 250 nm offshore-
1008 AM PDT Sun May 17 2026

.TODAY...N to NE winds 10 kt. Seas 3 to 5 ft. Period 14 seconds.
.TONIGHT...N to NE winds 10 kt. Seas 3 to 5 ft. Period
14 seconds. 
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft. Period 13 seconds. 
.MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds. 
.TUE...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds. 
.TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. 
.WED...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. Period
15 seconds. 
.THU...NE to E winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.THU NIGHT...SE winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 

$$

PMZ113-180515-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
1008 AM PDT Sun May 17 2026

.TODAY...NE to E winds 15 to 20 kt. Seas 6 to 8 ft in S to SW
swell. Period 14 seconds. Scattered showers and isolated tstms
through the day. 
.TONIGHT...E winds 20 to 25 kt Offshore Gulf of Papagayo, and E
to SE 10 to 15 kt Elsewhere. Seas 5 to 7 ft in S to SW swell.
Period 14 seconds. Scattered showers and isolated tstms through
the night. 
.MON...E 15 to 20 kt. Seas 5 to 7 ft in S to SW swell. Period 13
seconds. 
.MON NIGHT...NE to E winds 20 to 25 kt Offshore Gulf of Papagayo,
and SE winds 15 to 20 kt elsewhere. Seas 4 to 6 ft. Period 13 
seconds. 
.TUE...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. Period 14 
seconds. 
.TUE NIGHT...NE to E winds 20 to 25 kt Offshore Gulf of Papagayo,
and SE winds 15 to 20 kt elsewhere. Seas 5 to 7 ft. Period 16 
seconds. 
.WED...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. Period 15 
seconds. 
.WED NIGHT...NE to E winds 20 to 25 kt Offshore Gulf of Papagayo,
and E to SE 10 to 15 kt elsewhere. Seas 4 to 6 ft. Period 15 
seconds. 
.THU...NE to E winds 15 to 20 kt. Seas 4 to 6 ft. Period 14 
seconds. 
.THU NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. Period 14 
seconds. 

$$

PMZ115-180515-
North Costa Rica to West Panama to 250 nm offshore-
1008 AM PDT Sun May 17 2026

.TODAY...Variable winds less than 5 kt. Seas 3 to 5 ft in S to
SW swell. Period 14 seconds. Scattered heavy showers and 
isolated tstms through the day. 
.TONIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S to
SW swell. Period 14 seconds. Scattered heavy showers and 
isolated tstms through the night. 
.MON...Variable winds less than 5 kt. Seas 2 to 4 ft. Period
13 seconds. Scattered showers and isolated tstms through the
day. 
.MON NIGHT...Variable winds less than 5 kt. Seas 2 to 4 ft.
Period 17 seconds. Isolated tstms through the night. 
.TUE...NE to E winds 10 kt Near the Azuero Peninsula, and
variable less than 5 kt Elsewhere. Seas 2 to 4 ft. Period
16 seconds. 
.TUE NIGHT...NE to E winds 10 kt Near the Azuero Peninsula, and
variable less than 5 kt Elsewhere. Seas 2 to 4 ft. Period
16 seconds. 
.WED...N to NE winds 10 kt Near the Azuero Peninsula, and
variable less than 5 kt Elsewhere. Seas 2 to 4 ft. Period
15 seconds. 
.WED NIGHT...Variable winds less than 5 kt. Seas 2 to 4 ft.
Period 15 seconds. 
.THU...Variable winds less than 5 kt. Seas 2 to 4 ft. Period
14 seconds. 
.THU NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
to SW swell. Period 14 seconds. 

$$

PMZ117-180515-
East Panama and Colombia including the Gulf of Panama-
1008 AM PDT Sun May 17 2026

.TODAY...SW to W winds 10 kt. Seas 3 to 5 ft. Period 14 seconds.
Numerous heavy showers and isolated tstms through the day. 
.TONIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
14 seconds. Scattered heavy showers and isolated tstms through 
the night. 
.MON...Gulf of Panama, E winds 10 kt in the morning, becoming
variable winds less than 5 kt. Elsewhere, S to SW winds 10 kt.
Seas 2 to 4 ft. Period 14 seconds. Scattered showers and isolated
tstms through the day. 
.MON NIGHT...S to SW winds 10 kt. Seas 2 to 4 ft. Period
17 seconds. Scattered showers and isolated tstms through the
night. 
.TUE...SW to W winds 10 kt. Seas 2 to 4 ft. Period 15 seconds. 
.TUE NIGHT...SW winds 10 kt. Seas 2 to 4 ft. Period 16 seconds. 
.WED...SW to W winds 10 kt. Seas 2 to 4 ft. Period 15 seconds. 
.WED NIGHT...W winds 10 kt. Seas 2 to 4 ft. Period 15 seconds. 
.THU...SW winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.THU NIGHT...Variable winds less than 5 kt Gulf of Panama, and
SW 10 kt Elsewhere. Seas 2 to 4 ft. Period 14 seconds. 

$$

PMZ119-180515-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
1008 AM PDT Sun May 17 2026

.TODAY...Gulf of Guayaquil, variable winds less than 5 kt,
becoming W 10 kt in the afternoon. Elsewhere, S to SW winds
10 kt. Seas 4 to 6 ft in SW swell. Period 14 seconds. 
.TONIGHT...Gulf of Guayaquil, SW to W winds 10 kt in the
evening, becoming variable winds less than 5 kt. Elsewhere, S
winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.MON...S to SW winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.MON NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.TUE...S to SW winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. 
.TUE NIGHT...S winds 10 kt. Seas 4 to 6 ft in SW swell. Period
14 seconds. 
.WED...S to SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period
14 seconds. 
.WED NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 14 seconds. 
.THU...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds. 
.THU NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 

$$

PMZ121-180515-
Ecuador between 250 and 500 nm offshore-
1008 AM PDT Sun May 17 2026

.TODAY...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
13 seconds. 
.TONIGHT...SE to S winds 10 kt. Seas 3 to 5 ft. Period
16 seconds. 
.MON...SE to S winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.MON NIGHT...SE to S winds 10 kt. Seas 3 to 5 ft. Period
17 seconds. 
.TUE...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.TUE NIGHT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.WED...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
14 seconds. 
.WED NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 14 seconds. 
.THU...SE to S winds 10 kt. Seas 4 to 6 ft in S swell. Period
14 seconds. 
.THU NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in SE to S
swell. Period 14 seconds. 

$$

PMZ123-180515-
Offshore Galapagos Islands-
1008 AM PDT Sun May 17 2026

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

$$

Forecaster Chan