FZPN27 KNHC 240352 OFFPZ7 Offshore Waters Forecast NWS National Hurricane Center Miami, FL 852 PM PDT Sun Aug 23 2026 Offshore Waters Forecast for the E Pacific within 250 nm of Mexico 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. PMZ001-241600- Synopsis for the E Pacific within 250 nm of Mexico 852 PM PDT Sun Aug 23 2026 .SYNOPSIS...Tropical Storm Iselle is near 17.1N 115.3W at 8 PM PDT, and is moving northwest at 10 kt. Maximum sustained winds are 45 kt with gusts to 55 kt, and the minimum central pressure is 999 mb. Iselle will move to 18.1N 116.4W Mon morning, 19.4N 117.8W Mon evening, strengthen to a hurricane near 20.4N 119.6W Tue morning, weaken to a tropical storm near 21.0N 121.4W Tue evening, 21.5N 123.1W Wed morning, and 21.9N 125.1W Wed evening. Iselle will change little in intensity as it moves near 22.8N 128.8W late Thu. A ridge will persist between Baja California and Iselle through about midweek supporting gentle to moderate NW to N winds north of Cabo San Lazaro. Stronger winds and higher seas are expected across the forecast zone between Cabo San Lazaro and Cabo San Lucas, including the Revillagigedo Islands, due to the proximity of Iselle. The forecast calls for storm conditions in the Revillagigedo Islands tonight, and storm conditions possible in the Revillagigedo Islands and the forecast zone between Cabo San Lazaro and Cabo San Lucas on Mon. Fresh northerly gap winds will continue to pulse to strong speeds across Tehuantepec region mainly during the overnight and early morning hours through the next several days, with seas occasionally building to 8 ft. $$ PMZ009-241600- Mexico Border S to 30N within 60 nm of shore- 852 PM PDT Sun Aug 23 2026 .TONIGHT...N of 31N, NW winds 10 kt. S of 31N, NW winds 10 kt early in the evening, becoming variable winds less than 5 kt. Seas 2 to 4 ft. Period 14 seconds. .MON...N of 31N, variable winds less than 5 kt, becoming W 10 kt in the afternoon. S of 31N, variable winds less than 5 kt. Seas 2 to 4 ft. Period 14 seconds. .MON NIGHT...NW winds 10 kt. Seas 2 to 4 ft. Period 13 seconds. .TUE...NW winds 10 kt. Seas 3 to 5 ft. Period 13 seconds. .TUE NIGHT...NW winds 10 kt. Seas 4 to 6 ft in S swell. Period 13 seconds. .WED...W to NW winds 10 kt. Seas 4 to 6 ft in S swell. Period 12 seconds. .WED NIGHT...NW winds 10 kt. Seas 4 to 6 ft in S swell. Period 11 seconds. .THU...N of 31N, W to NW winds 10 kt in the morning, becoming variable winds less than 5 kt. S of 31N, variable winds less than 5 kt, becoming SW to W 10 kt in the afternoon. Seas 3 to 5 ft. Period 11 seconds. .THU NIGHT...N of 31N, variable winds less than 5 kt. S of 31N, NW winds 10 kt in the evening, becoming variable winds less than 5 kt. Seas 3 to 5 ft. Period 10 seconds. .FRI...N of 31N, variable winds less than 5 kt. S of 31N, variable winds less than 5 kt, becoming W 10 kt in the afternoon. Seas 3 to 5 ft. Period 18 seconds. $$ PMZ011-241600- 30N to Punta Eugenia within 250 nm of shore- 852 PM PDT Sun Aug 23 2026 .TONIGHT...NW to N winds 10 to 15 kt. Seas 3 to 5 ft. Period 14 seconds. .MON...N winds 10 kt. Seas 3 to 5 ft. Period 13 seconds. .MON NIGHT...NW to N winds 10 kt. Seas 4 to 6 ft in SE to S swell. Period 13 seconds. .TUE...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period 13 seconds. .TUE NIGHT...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period 13 seconds. .WED...NW winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period 12 seconds. .WED NIGHT...NW winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period 11 seconds. .THU...NW winds 10 kt. Seas 5 to 7 ft in S swell. Period 10 seconds. .THU NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period 10 seconds. .FRI...Within 60 nm of the coast, variable winds less than 5 kt, becoming W to NW 10 kt in the afternoon. Elsewhere, NW to N winds 10 to 15 kt. Seas 4 to 6 ft. Period 18 seconds. $$ PMZ013-241600- Punta Eugenia to Cabo San Lazaro within 250 nm offshore- 852 PM PDT Sun Aug 23 2026 .TONIGHT...NE winds 10 kt. Seas 3 to 5 ft. Period 13 seconds. .MON...Within 60 nm of shore, variable winds less than 5 kt, becoming SW to W 10 kt in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 6 to 8 ft in SE to S swell. Period 13 seconds. .MON NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft in S swell. Period 12 seconds. .TUE...N to NE winds 15 to 20 kt, shifting to SW in the afternoon. Seas 7 to 10 ft in S swell. Period 12 seconds. .TUE NIGHT...NW to N winds 15 to 20 kt. Seas 6 to 9 ft in S swell. Period 12 seconds. .WED...NW to N winds 10 to 15 kt. Seas 6 to 8 ft in S swell. Period 11 seconds. .WED NIGHT...NW to N winds 10 to 15 kt. Seas 5 to 7 ft. Period 10 seconds. .THU...NW to N winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period 9 seconds. .THU NIGHT...NW winds 10 to 15 kt. Seas 3 to 5 ft. Period 18 seconds. .FRI...NW to N winds 10 kt. Seas 3 to 5 ft. Period 18 seconds. $$ PMZ014-241600- Cabo San Lazaro to Cabo San Lucas within 350 nm offshore N of 20N- 852 PM PDT Sun Aug 23 2026 .TONIGHT...SE to S winds 10 to 15 kt N of 22N, and SE 20 to 25 kt S of 22N. Seas 7 to 11 ft in SE to S swell. Period 13 seconds. .MON...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 15 to 20 kt N of 22N, and SE 25 to 30 kt S of 22N. Seas 7 to 11 ft in S swell. Period 11 seconds. Scattered showers and isolated tstms through the day. .MON NIGHT...SW winds 15 to 20 kt N of 22N, and S to SW 25 to 30 kt S of 22N. Seas 7 to 11 ft in S to SW swell. Period 11 seconds. .TUE...W to NW winds 20 to 25 kt, becoming W 10 to 15 kt in the afternoon. Seas 7 to 10 ft in S to SW swell. Period 10 seconds. Scattered tstms through the day. .TUE NIGHT...N winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell. Period 10 seconds. .WED...N to NE winds 10 to 15 kt. Seas 4 to 6 ft. Period 9 seconds. .WED NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. Period 11 seconds. .THU...N to NE winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. .THU NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. Period 18 seconds. .FRI...NE winds 10 to 15 kt. Seas 3 to 5 ft. Period 18 seconds. $$ PMZ016-241600- From 17N to 20N Between 110W and 115W including the Revillagigedo Islands- 852 PM PDT Sun Aug 23 2026 ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS. SE to S winds 25 to 35 kt E of 113W, and SE 40 to 45 kt W of 113W. Seas 10 to 16 ft. Period 11 seconds. Scattered showers and isolated tstms through the night. .MON...TROPICAL STORM CONDITIONS POSSIBLE. SE winds 20 to 25 kt E of 113W, and SE to S 30 to 35 kt W of 113W. Seas 9 to 14 ft in S to SW swell. Period 10 seconds. Scattered showers and isolated tstms through the day. .MON NIGHT...SE to S winds 10 to 15 kt E of 113W, and SE to S 25 to 30 kt W of 113W. Seas 7 to 11 ft in S to SW swell. Period 10 seconds. Scattered showers and isolated tstms through the night. .TUE...NE to E winds 10 kt E of 113W, and SE 15 to 20 kt W of 113W. Seas 5 to 7 ft. Period 9 seconds. Scattered showers and isolated tstms through the day. .TUE NIGHT...E winds 10 kt. Seas 5 to 7 ft in S to SW swell. Period 9 seconds. Scattered showers and isolated tstms through the night. .WED...NE to E winds 10 kt. Seas 3 to 5 ft. Period 11 seconds. .WED NIGHT...E winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period 16 seconds. .THU...NE to E winds 10 to 15 kt. Seas 4 to 6 ft in S to SW swell. Period 18 seconds. .THU NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. Period 18 seconds. .FRI...E winds 25 to 30 kt. Seas 6 to 9 ft in S to SW swell. Period 17 seconds. $$ PMZ017-241600- Northern Gulf of California- 852 PM PDT Sun Aug 23 2026 .TONIGHT...SE to S winds 15 to 20 kt. Seas 2 to 4 ft. Period 6 seconds. .MON...SE to S winds 10 to 15 kt. Seas 3 ft or less. Period 6 seconds. .MON NIGHT...S to SW winds 10 kt. Seas 3 ft or less. Period 10 seconds. .TUE...S winds 10 kt. Seas 3 ft or less. Period 10 seconds. .TUE NIGHT...SW winds 10 kt. Seas 3 ft or less. Period 10 seconds. .WED...SE to S winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. .WED NIGHT...S winds 10 kt. Seas 3 ft or less. Period 4 seconds. .THU...SE to S winds 15 to 20 kt. Seas 3 ft or less. Period 4 seconds. .THU NIGHT...S winds 10 kt. Seas 3 ft or less. Period 5 seconds. .FRI...SE to S winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. $$ PMZ019-241600- Central Gulf of California- 852 PM PDT Sun Aug 23 2026 .TONIGHT...S winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. .MON...S winds 10 kt. Seas 3 ft or less. Period 10 seconds. .MON NIGHT...SW to W winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. .TUE...S to SW winds 10 kt. Seas 3 ft or less. Period 11 seconds. .TUE NIGHT...S to SW winds 10 to 15 kt. Seas 3 ft or less. Period 11 seconds. .WED...SE to S winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. .WED NIGHT...S winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. .THU...SE to S winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. .THU NIGHT...S winds 10 kt. Seas 3 ft or less. Period 10 seconds. .FRI...SE to S winds 10 kt. Seas 3 ft or less. Period 10 seconds. $$ PMZ021-241600- Southern Gulf of California- 852 PM PDT Sun Aug 23 2026 .TONIGHT...S to SW winds 10 to 15 kt. Seas 2 to 4 ft. Period 14 seconds. .MON...W winds 10 to 15 kt. Seas 2 to 4 ft. Period 13 seconds. .MON NIGHT...SW to W winds 15 to 20 kt. Seas 2 to 4 ft. Period 11 seconds. .TUE...W to NW winds 10 to 15 kt, shifting to SW in the afternoon. Seas 2 to 4 ft. Period 11 seconds. .TUE NIGHT...S to SW winds 10 to 15 kt. Seas 2 to 4 ft. Period 11 seconds. Scattered showers and isolated tstms through the night. .WED...SE to S winds 10 kt. Seas 3 ft or less. Period 11 seconds. .WED NIGHT...S winds 10 to 15 kt. Seas 3 ft or less. Period 14 seconds. .THU...S winds 10 kt. Seas 3 ft or less. Period 16 seconds. .THU NIGHT...S to SW winds 10 to 15 kt. Seas 3 ft or less. Period 17 seconds. .FRI...S winds 10 kt. Seas 3 ft or less. Period 18 seconds. $$ PMZ022-241600- N of 20N E of 110W to the Entrance of the Gulf of California- 852 PM PDT Sun Aug 23 2026 .TONIGHT...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period 13 seconds. Scattered showers and isolated tstms through the night. .MON...W to NW winds 10 to 15 kt. Seas 4 to 6 ft in S to SW swell. Period 13 seconds. .MON NIGHT...W to NW winds 10 to 15 kt. Seas 4 to 6 ft. Period 15 seconds. Scattered showers and isolated tstms through the night. .TUE...N winds 10 to 15 kt, shifting to SW to W in the afternoon. Seas 3 to 5 ft. Period 16 seconds. Scattered showers and isolated tstms through the day. .TUE NIGHT...W to NW winds 10 to 15 kt, shifting to NE to E late. Seas 3 to 5 ft. Period 16 seconds. .WED...NE to E winds 10 to 15 kt, shifting to SW to W in the afternoon. Seas 2 to 4 ft. Period 15 seconds. .WED NIGHT...W to NW winds 10 kt. Seas 2 to 4 ft. Period 15 seconds. .THU...NW winds 10 kt. Seas 2 to 4 ft. Period 17 seconds. .THU NIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. Period 18 seconds. .FRI...E to SE winds 10 kt, shifting to S in the afternoon. Seas 3 to 5 ft. Period 18 seconds. $$ PMZ024-241600- Colima and Jalisco within 300 nm offshore S of 20N and E of 110W- 852 PM PDT Sun Aug 23 2026 .TONIGHT...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period 12 seconds. Scattered showers and isolated tstms through the night. .MON...N to NE winds 10 to 15 kt. Seas 5 to 7 ft. Period 11 seconds. .MON NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft. Period 11 seconds. Scattered showers and isolated tstms through the night. .TUE...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. Period 16 seconds. Scattered showers and isolated tstms through the day. .TUE NIGHT...NE winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. Scattered showers and isolated tstms through the night. .WED...NE to E winds 10 kt. Seas 3 to 5 ft. Period 15 seconds. .WED NIGHT...NE winds 10 kt. Seas 3 to 5 ft. Period 15 seconds. .THU...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. .THU NIGHT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. Period 18 seconds. .FRI...E to SE winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell. Period 17 seconds. $$ PMZ025-241600- Michoacan and Guerrero within 250 nm offshore- 852 PM PDT Sun Aug 23 2026 .TONIGHT...NW to N winds 15 to 20 kt. Seas 4 to 6 ft. Period 15 seconds. Scattered showers and isolated tstms through the night. .MON...NE winds 15 to 20 kt. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the day. .MON NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .TUE...NE winds 10 to 15 kt. Seas 3 to 5 ft. Period 16 seconds. Scattered showers and isolated tstms through the day. .TUE NIGHT...N to NE winds 10 kt. Seas 2 to 4 ft. Period 16 seconds. Scattered showers and isolated tstms through the night. .WED...Within 60 nm of shore, variable winds less than 5 kt, becoming SW to W 10 kt in the afternoon. Elsewhere, E winds 10 to 15 kt. Seas 3 to 5 ft. Period 15 seconds. .WED NIGHT...Within 60 nm of shore, W winds 10 kt in the evening, becoming variable winds less than 5 kt. Elsewhere, SE winds 10 to 15 kt. Seas 3 to 5 ft. Period 16 seconds. .THU...Within 60 nm of shore, variable winds less than 5 kt, becoming SW to W 10 kt in the afternoon. Elsewhere, E to SE winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. .THU NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period 18 seconds. .FRI...E winds 10 kt, shifting to SE to S in the afternoon. Seas 5 to 7 ft in S to SW swell. Period 18 seconds. $$ PMZ026-241600- Oaxaca W of Puerto Angel within 250 nm offshore- 852 PM PDT Sun Aug 23 2026 .TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms. .MON...N winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the day. .MON NIGHT...N to NE winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. .TUE...NE winds 10 to 15 kt, shifting to E to SE in the afternoon. Seas 3 to 5 ft. Period 16 seconds. Scattered showers and isolated tstms through the day. .TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. Period 16 seconds. Scattered showers and isolated tstms through the night. .WED...NE to E winds 10 to 15 kt, shifting to SE to S in the afternoon. Seas 3 to 5 ft. Period 15 seconds. .WED NIGHT...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. Period 16 seconds. .THU...NE to E winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. .THU NIGHT...SE to S winds 10 kt, shifting to NE late. Seas 3 to 5 ft. Period 18 seconds. .FRI...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. Period 18 seconds. $$ PMZ028-241600- Oaxaca E of Puerto Angel within 300 nm offshore including the Gulf of Tehuantepec- 852 PM PDT Sun Aug 23 2026 .TONIGHT...N winds 25 to 30 kt N of 14N, and NE 15 to 20 kt S of 14N. Seas 4 to 6 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .MON...NW to N winds 20 to 25 kt N of 14N, and NE 15 to 20 kt S of 14N. Seas 4 to 6 ft. Period 17 seconds. Scattered showers and isolated tstms through the day. .MON NIGHT...NW to N winds 25 to 30 kt N of 14N, and NE to E 10 to 15 kt S of 14N. Seas 4 to 6 ft. Period 17 seconds. .TUE...N to NE winds 25 to 30 kt N of 14N, and NE to E 15 to 20 kt S of 14N. Seas 4 to 6 ft. Period 16 seconds. .TUE NIGHT...N to NE winds 25 to 30 kt N of 14N, and E 15 to 20 kt S of 14N. Seas 4 to 6 ft. Period 16 seconds. Scattered showers and isolated tstms through the night. .WED...N to NE winds 25 to 30 kt N of 14N, and NE to E 15 to 20 kt S of 14N. Seas 3 to 5 ft. Period 15 seconds. .WED NIGHT...N winds 25 to 30 kt N of 14N, and E 10 to 15 kt S of 14N. Seas 3 to 5 ft. Period 16 seconds. .THU...N of 14N, N to NE winds 25 to 30 kt. S of 14N, NE winds 20 to 25 kt, diminishing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft. Period 17 seconds. .THU NIGHT...N to NE winds 25 to 30 kt N of 14N, and NE to E 10 to 15 kt S of 14N. Seas 4 to 6 ft. Period 18 seconds. .FRI...NE winds 25 to 30 kt N of 14N, and NE to E 15 to 20 kt S of 14N. Seas 5 to 7 ft. Period 18 seconds. $$ PMZ029-241600- Offshore Chiapas E of 94W- 852 PM PDT Sun Aug 23 2026 .TONIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. Period 15 seconds. Scattered showers and isolated tstms through the night. .MON...N winds 10 kt, shifting to SW to W in the afternoon. Seas 3 to 5 ft. Period 18 seconds. .MON NIGHT...SW to W winds 10 kt, shifting to NW late. Seas 3 to 5 ft. Period 17 seconds. .TUE...E of 93W, variable winds less than 5 kt, becoming SW 10 kt in the afternoon. W of 93W, N winds 10 kt, shifting to S to SW in the afternoon. Seas 3 to 5 ft. Period 16 seconds. .TUE NIGHT...SW winds 10 kt, shifting to NW late. Seas 3 to 5 ft. Period 16 seconds. Scattered showers and isolated tstms through the night. .WED...E of 93W, variable winds less than 5 kt, becoming SW to W 10 kt in the afternoon. W of 93W, NW to N winds 10 to 15 kt, shifting to W in the afternoon. Seas 2 to 4 ft. Period 15 seconds. .WED NIGHT...SW winds 10 kt, shifting to E to SE late. Seas 2 to 4 ft. Period 15 seconds. .THU...E winds 10 kt, shifting to S in the afternoon. Seas 2 to 4 ft. Period 17 seconds. .THU NIGHT...SE to S winds 10 kt, shifting to E late. Seas 3 to 5 ft. Period 17 seconds. .FRI...E winds 10 kt, shifting to S in the afternoon. Seas 4 to 6 ft in SW swell. Period 18 seconds. $$ Forecaster Ramos