000 FZPN28 KNHC 181529 OFFPZ8 Offshore Waters Forecast NWS National Hurricane Center Miami, FL 829 AM PDT Wed Oct 18 2023 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. PMZ101-190330- Synopsis for the E Pacific within 250 nm of Central America, Colombia, and within 750 nm of Ecuador 829 AM PDT Wed Oct 18 2023 .SYNOPSIS...Moderate to rough seas from swell generated by the Gulf of Tehuantepec gale-force gap wind event will subside well offshore of Guatemala through the rest of today. Winds will pulse moderate to fresh, locally strong, near the Gulf of Papagayo at night through Thu night. Gentle to moderate winds will prevail south of the monsoon trough. Seas may build slightly in SW swell offshore Ecuador to the Galapagos Islands by the end of the week into the weekend, then build across the waters from W to E by the end of the weekend as NW swell arrives. Meanwhile, a broad area of low pres has formed several hundred nautical miles S of the Gulf of Tehuantepec but is only producing a few disorganized showers and thunderstorms. Gradual development of this system is expected, and a tropical depression is likely to form late this week or over the weekend while the system meanders or drifts NW over the far eastern portion of the basin. This system has a low chance of tropical cyclone development in the next 48 hours, and high chance through 7 days. $$ PMZ111-190330- Guatemala and El Salvador to 250 nm offshore- 829 AM PDT Wed Oct 18 2023 .TODAY...NE to E winds 10 to 15 kt. Seas 6 to 8 ft in NW swell. Period 11 seconds. Scattered showers and isolated tstms through the day. .TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft in NW swell. Period 11 seconds. Scattered showers and isolated tstms through the night. .THU...E winds 10 to 15 kt. Seas 5 to 7 ft in SW to W swell. Period 17 seconds. Scattered showers and isolated tstms through the day. .THU NIGHT...NE to E winds 10 kt. Seas 5 to 7 ft in S to SW swell. Period 17 seconds. Scattered showers and isolated tstms through the night. .FRI...E winds 10 kt. Seas 5 to 7 ft in SW swell. Period 16 seconds. .FRI NIGHT...S winds 10 kt. Seas 5 to 7 ft in SW swell. Period 16 seconds. .SAT...E to SE winds 10 kt. Seas 5 to 7 ft in SW swell. Period 16 seconds. .SAT NIGHT...Variable winds less than 5 kt. Seas 6 to 8 ft in SW swell. Period 15 seconds. .SUN...E to SE winds 10 kt. Seas 6 to 8 ft in W swell. Period 16 seconds. .SUN NIGHT...SE winds 10 kt. Seas 6 to 8 ft in W swell. Period 16 seconds. $$ PMZ113-190330- El Salvador to North Costa Rica including the Gulfs of Fonseca and Papagayo- 829 AM PDT Wed Oct 18 2023 .TODAY...NE to E winds 15 to 20 kt Offshore Gulf of Papagayo, and E 10 to 15 kt Elsewhere. Seas 5 to 7 ft in W to NW swell. Period 11 seconds. Scattered showers and isolated tstms through the day. .TONIGHT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell. Period 11 seconds. Scattered showers and isolated tstms through the night. .THU...Offshore Gulf of Papagayo, E winds 15 to 20 kt. Elsewhere, E to SE winds 10 kt, shifting to S in the afternoon. Seas 4 to 6 ft. Period 17 seconds. Scattered showers and isolated tstms through the day. .THU NIGHT...S to SW winds 10 kt, shifting to SW to W late. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .FRI...S winds 10 kt. Seas 4 to 6 ft in SW swell. Period 16 seconds. .FRI NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. .SAT...W to NW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period 16 seconds. .SAT NIGHT...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period 15 seconds. .SUN...NE winds 10 kt. Seas 5 to 7 ft in SW to W swell. Period 16 seconds. .SUN NIGHT...SE to S winds 10 kt. Seas 5 to 7 ft in SW to W swell. Period 16 seconds. $$ PMZ115-190330- North Costa Rica to West Panama to 250 nm offshore- 829 AM PDT Wed Oct 18 2023 .TODAY...Near the Azuero Peninsula, E winds 10 kt in the morning, becoming variable winds less than 5 kt. Elsewhere, variable winds less than 5 kt. Seas 3 to 5 ft. Period 12 seconds. Scattered showers and isolated tstms through the day. .TONIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period 11 seconds. Scattered showers and isolated tstms through the night. .THU...SW to W winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the day. .THU NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .FRI...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. .FRI NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. .SAT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. .SAT NIGHT...W winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period 15 seconds. .SUN...SW to W winds 10 kt. Seas 4 to 6 ft in SW to W swell. Period 17 seconds. .SUN NIGHT...SW to W winds 10 kt. Seas 4 to 6 ft in W swell. Period 17 seconds. $$ PMZ117-190330- East Panama and Colombia including the Gulf of Panama- 829 AM PDT Wed Oct 18 2023 .TODAY...Variable winds less than 5 kt Gulf of Panama, and SW 10 kt Elsewhere. Seas 3 to 5 ft in S to SW swell. Period 13 seconds. .TONIGHT...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .THU...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. Scattered showers and isolated tstms through the day. .THU NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. Scattered tstms through the night. .FRI...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. .FRI NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. .SAT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. .SAT NIGHT...SW to W winds 10 kt. Seas 4 to 6 ft in SW swell. Period 16 seconds. .SUN...SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period 15 seconds. .SUN NIGHT...SW to W winds 10 kt. Seas 4 to 6 ft in SW swell. Period 15 seconds. $$ PMZ119-190330- Ecuador including the Gulf of Guayaquil to 250 nm offshore- 829 AM PDT Wed Oct 18 2023 .TODAY...S to SW winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. .TONIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. .THU...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. .THU NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. .FRI...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. .FRI NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period 16 seconds. .SAT...S to SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period 15 seconds. .SAT NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period 15 seconds. .SUN...S to SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period 14 seconds. .SUN NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 14 seconds. $$ PMZ121-190330- Ecuador between 250 and 500 nm offshore- 829 AM PDT Wed Oct 18 2023 .TODAY...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. .TONIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. .THU...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. .THU NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. .FRI...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. .FRI NIGHT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period 16 seconds. .SAT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 15 seconds. .SAT NIGHT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period 14 seconds. .SUN...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 14 seconds. .SUN NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period 14 seconds. $$ PMZ123-190330- Offshore Galapagos Islands- 829 AM PDT Wed Oct 18 2023 .TODAY...SE to S winds 10 to 15 kt. Seas 4 to 6 ft, except 1 to 3 ft Lee of Galapagos Islands. Period 17 seconds. .TONIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft, except 1 to 3 ft Lee of Galapagos Islands. Period 16 seconds. .THU...S winds 10 to 15 kt. Seas 4 to 6 ft, except 1 to 3 ft Lee of Galapagos Islands. Period 18 seconds. .THU NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft in SW swell, except 2 to 4 ft Lee of Galapagos Islands. Period 17 seconds. .FRI...S winds 10 to 15 kt. Seas 5 to 7 ft in SW swell, except 2 to 4 ft Lee of Galapagos Islands. Period 14 seconds. .FRI NIGHT...S winds 10 kt. Seas 5 to 7 ft in S to SW swell, except 2 to 4 ft Lee of Galapagos Islands. Period 16 seconds. .SAT...S winds 10 kt. Seas 5 to 7 ft in SW swell, except 2 to 4 ft Lee of Galapagos Islands. Period 19 seconds. .SAT NIGHT...S winds 10 kt. Seas 5 to 7 ft in W swell, except 2 to 4 ft Lee of Galapagos Islands. Period 18 seconds. .SUN...S winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell, except 2 to 4 ft Lee of Galapagos Islands. Period 17 seconds. .SUN NIGHT...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell, except 2 to 4 ft Lee of Galapagos Islands. Period 17 seconds. $$ Forecaster Lewitsky