875 FZPN27 KNHC 181535 OFFPZ7 Offshore Waters Forecast NWS National Hurricane Center Miami, FL 835 AM PDT Wed Oct 18 2023 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. PMZ001-190345- Synopsis for the E Pacific within 250 nm of Mexico 835 AM PDT Wed Oct 18 2023 .SYNOPSIS...Tropical Storm Norma is near 14.8N 107.9W at 8 AM PDT, and is moving north-northwest at 6 kt. Maximum sustained winds are 60 kt with gusts to 75 kt, and the minimum central pressure is 991 mb. Norma will strengthen to a hurricane near 15.8N 108.1W this evening, move to 16.9N 108.3W Thu morning, 17.8N 108.5W Thu evening, 18.7N 109.0W Fri morning, 19.6N 109.5W Fri evening, and 20.8N 109.9W Sat morning. Norma will change little in intensity as it moves to 21.9N 109.9W early Sun. Elsewhere, winds over the Gulf of Tehuantepec are diminishing below gale force now. Fresh to strong winds will continue to pulse over the Tehuantepec region through the remainder of the week. Seas in the Tehuantepec region will subside through the day as winds diminish. Gentle to moderate winds will prevail elsewhere through the end of the week. Fresh to strong winds offshore Baja California may develop this weekend. Large NW swell is forecast to spread offshore Baja California by the end of the week into the weekend, resulting in confused and hazardous seas as it mixes with swells generated by Norma. Meanwhile, a broad area of low press several hundred nm S of the Gulf of Tehuantepec may gradually develop, and a tropical depression is likely to form late this week or over the weekend while the system meanders or drifts NW. This system has a low chance of tropical cyclone development in the next 48 hours, and high chance through 7 days. $$ PMZ009-190345- Mexico Border S to 29N within 60 nm of shore- 835 AM PDT Wed Oct 18 2023 .TODAY...NW winds 10 kt. Seas 5 to 7 ft in W to NW swell. Period 14 seconds. .TONIGHT...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell. Period 22 seconds. .THU...NW winds 10 to 15 kt. Seas 6 to 8 ft in W to NW swell. Period 22 seconds. .THU NIGHT...NW to N winds 15 to 20 kt. Seas 6 to 9 ft in W to NW swell. Period 19 seconds. .FRI...NW to N winds 15 to 20 kt. Seas 7 to 10 ft in W to NW swell. Period 17 seconds. .FRI NIGHT...NW to N winds 15 to 20 kt. Seas 6 to 9 ft in W to NW swell. Period 16 seconds. .SAT...NW winds 20 to 25 kt. Seas 6 to 9 ft in W to NW swell. Period 15 seconds. .SAT NIGHT...NW winds 20 to 25 kt. Seas 6 to 8 ft. Period 14 seconds. .SUN...NW winds 20 to 25 kt. Seas 6 to 8 ft. Period 13 seconds. $$ PMZ011-190345- Mexico S of 29N to Punta Eugenia- 835 AM PDT Wed Oct 18 2023 .TODAY...NW to N winds 10 to 15 kt. Seas 6 to 8 ft in NW swell. Period 14 seconds. .TONIGHT...NW to N winds 10 to 15 kt. Seas 6 to 8 ft in NW swell. Period 22 seconds. .THU...NW to N winds 10 to 15 kt. Seas 6 to 9 ft in NW swell. Period 22 seconds. .THU NIGHT...NW to N winds 15 to 20 kt. Seas 7 to 10 ft in W to NW swell. Period 20 seconds. .FRI...NW to N winds 15 to 20 kt. Seas 7 to 10 ft in W to NW swell. Period 18 seconds. .FRI NIGHT...NW to N winds 15 to 20 kt. Seas 7 to 10 ft in W to NW swell. Period 16 seconds. .SAT...NW to N winds 15 to 20 kt. Seas 6 to 9 ft in W to NW swell. Period 15 seconds. .SAT NIGHT...NW to N winds 20 to 25 kt. Seas 6 to 9 ft in S swell. Period 14 seconds. .SUN...NW to N winds 20 to 25 kt. Seas 6 to 8 ft. Period 13 seconds. $$ PMZ013-190345- Punta Eugenia to Cabo San Lazaro within 250 nm offshore- 835 AM PDT Wed Oct 18 2023 .TODAY...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in NW swell. Period 15 seconds. .TONIGHT...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in NW swell. Period 18 seconds. .THU...NW to N winds 10 to 15 kt. Seas 6 to 8 ft in W to NW swell. Period 22 seconds. .THU NIGHT...NW to N winds 15 to 20 kt. Seas 7 to 10 ft in W to NW swell. Period 21 seconds. .FRI...NW to N winds 15 to 20 kt. Seas 7 to 11 ft in W to NW swell. Period 19 seconds. .FRI NIGHT...NW to N winds 15 to 20 kt. Seas 7 to 11 ft in W to NW swell. Period 17 seconds. .SAT...NW to N winds 15 to 20 kt. Seas 7 to 11 ft in SE to S swell. Period 15 seconds. .SAT NIGHT...NW to N winds 20 to 25 kt. Seas 7 to 11 ft in SE swell. Period 14 seconds. .SUN...NW to N winds 20 to 25 kt. Seas 7 to 11 ft in SE swell. Period 14 seconds. $$ PMZ014-190345- Cabo San Lazaro to Cabo San Lucas within 350 nm offshore N of 20N- 835 AM PDT Wed Oct 18 2023 .TODAY...NW to N winds 10 kt. Seas 4 to 6 ft in NW swell. Period 16 seconds. .TONIGHT...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in NW swell. Period 15 seconds. .THU...NW to N winds 10 kt N of 22N, and NW to N 15 to 20 kt S of 22N. Seas 7 to 10 ft in W swell. Period 22 seconds. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NW to N winds 10 to 15 kt N of 22N, and NW to N 20 to 25 kt S of 22N. Seas 8 to 12 ft in S to SW swell. Period 21 seconds. .FRI...HURRICANE CONDITIONS POSSIBLE. N of 22N, NW to N winds 15 to 20 kt. S of 22N, NW to N winds 30 to 35 kt, increasing to 40 to 45 kt in the afternoon. Seas 10 to 15 ft in SE to S swell. Period 20 seconds. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. Scattered showers and isolated tstms through the night. .SAT...HURRICANE CONDITIONS POSSIBLE. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. $$ PMZ016-190345- From 17N to 20N Between 110W and 115W including the Revillagigedo Islands- 835 AM PDT Wed Oct 18 2023 ...TROPICAL STORM WARNING... .TODAY...N winds 10 to 15 kt. Seas 6 to 9 ft in NW swell. Period 16 seconds. Scattered showers and isolated tstms through the day. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 25 kt E of 113W, and NW to N 10 to 15 kt W of 113W. Seas 7 to 11 ft in SE to S swell. Period 15 seconds. .THU...TROPICAL STORM CONDITIONS POSSIBLE. N winds 20 to 25 kt E of 113W, and NW to N 10 to 15 kt W of 113W. Seas 10 to 15 ft in E to SE swell. Period 14 seconds. Scattered showers and isolated tstms through the day. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E of 113W, N winds 20 to 25 kt, becoming NW to N 30 to 35 kt late. W of 113W, NW to N winds 10 to 15 kt. Seas 11 to 17 ft in E to SE swell. Period 21 seconds. Scattered showers and isolated tstms through the night. .FRI...HURRICANE CONDITIONS POSSIBLE. NW to N winds 35 to 45 kt E of 113W, and NW to N 10 to 15 kt W of 113W. Seas 13 to 20 ft in E swell. Period 20 seconds. Scattered showers and isolated tstms through the day. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...TROPICAL STORM CONDITIONS POSSIBLE. $$ PMZ017-190345- Northern Gulf of California- 835 AM PDT Wed Oct 18 2023 .TODAY...NW to N winds 10 to 15 kt. Seas 3 ft or less. Period 6 seconds. .TONIGHT...NW winds 10 to 15 kt. Seas 3 ft or less. Period 5 seconds. .THU...NW to N winds 10 to 15 kt. Seas 3 ft or less. Period 4 seconds. .THU NIGHT...NW winds 10 to 15 kt. Seas 3 ft or less. Period 4 seconds. .FRI...NW winds 10 to 15 kt. Seas 3 ft or less. Period 9 seconds. .FRI NIGHT...NW winds 10 to 15 kt. Seas 3 ft or less. Period 9 seconds. .SAT...NW to N winds 10 kt. Seas 3 ft or less. Period 11 seconds. .SAT NIGHT...Variable winds less than 5 kt, becoming S to SW 10 kt late. Seas 3 ft or less. Period 9 seconds. .SUN...SE to S winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. $$ PMZ019-190345- Central Gulf of California- 835 AM PDT Wed Oct 18 2023 .TODAY...N winds 10 kt, shifting to SW to W in the afternoon. Seas 3 ft or less. Period 13 seconds. .TONIGHT...NW winds 10 to 15 kt. Seas 3 ft or less. Period 12 seconds. .THU...NW winds 10 to 15 kt. Seas 3 ft or less. Period 10 seconds. .THU NIGHT...NW winds 15 to 20 kt. Seas 3 ft or less. Period 10 seconds. .FRI...NW winds 10 to 15 kt. Seas 3 ft or less. Period 11 seconds. .FRI NIGHT...NW winds 10 to 15 kt. Seas 3 ft or less. Period 12 seconds. .SAT...W to NW winds 10 kt, shifting to N to NE in the afternoon. Seas 3 ft or less. Period 12 seconds. .SAT NIGHT...W to NW winds 10 kt. Seas 2 to 4 ft. Period 11 seconds. .SUN...W to NW winds 10 to 15 kt. Seas 2 to 4 ft. Period 11 seconds. $$ PMZ021-190345- Southern Gulf of California- 835 AM PDT Wed Oct 18 2023 .TODAY...SE to S winds 10 kt. Seas 3 ft or less. Period 13 seconds. .TONIGHT...Variable winds less than 5 kt, becoming SW to W 10 kt late. Seas 3 ft or less. Period 11 seconds. .THU...Variable winds less than 5 kt, becoming NW 10 kt in the afternoon. Seas 3 to 5 ft. Period 11 seconds. .THU NIGHT...NW winds 10 to 15 kt. Seas 4 to 6 ft. Period 12 seconds. .FRI...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in SE to S swell. Period 13 seconds. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Scattered showers and isolated tstms through the night. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...TROPICAL STORM CONDITIONS POSSIBLE. $$ PMZ022-190345- N of 20N E of 110W to the Entrance of the Gulf of California- 835 AM PDT Wed Oct 18 2023 ...TROPICAL STORM WARNING... .TODAY...E to SE winds 10 kt, shifting to S in the afternoon. Seas 5 to 7 ft in SW swell. Period 16 seconds. Scattered showers and isolated tstms through the day. .TONIGHT...S winds 10 kt, becoming N 15 to 20 kt late. Seas 6 to 9 ft in S swell. Period 16 seconds. .THU...TROPICAL STORM CONDITIONS POSSIBLE. N to NE winds 20 to 25 kt. Seas 7 to 11 ft in S swell. Period 16 seconds. Scattered showers and isolated tstms through the day. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. NE winds 25 to 30 kt, increasing to 35 to 40 kt late. Seas 9 to 14 ft in S swell. Period 13 seconds. Scattered showers and isolated tstms through the night. .FRI...HURRICANE CONDITIONS POSSIBLE. NE winds 40 to 45 kt, becoming E 60 to 65 kt in the afternoon. Seas 13 to 20 ft. Period 13 seconds. Scattered showers and isolated tstms through the day. Vsby 1 NM or less. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. Scattered showers and isolated tstms. .SAT...HURRICANE CONDITIONS POSSIBLE. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. $$ PMZ024-190345- Colima and Jalisco within 300 nm offshore S of 20N and E of 110W- 835 AM PDT Wed Oct 18 2023 ...HURRICANE WARNING... .TODAY...TROPICAL STORM CONDITIONS. E winds 20 to 25 kt, increasing to 40 to 45 kt in the afternoon. Seas 9 to 14 ft. Period 16 seconds. Numerous showers and scattered tstms. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 50 to 70 kt. Seas 14 to 21 ft in SE swell. Period 11 seconds. Numerous showers and isolated tstms. Vsby 1 NM or less. .THU...HURRICANE CONDITIONS EXPECTED. E winds 65 to 85 kt. Seas 15 to 23 ft in SE to S swell. Period 12 seconds. Scattered showers and isolated tstms. Vsby 1 NM or less. .THU NIGHT...HURRICANE CONDITIONS EXPECTED. SE to S winds 75 to 85 kt. Seas 17 to 26 ft in S to SW swell. Period 12 seconds. Scattered showers and isolated tstms. Vsby 1 NM or less. .FRI...HURRICANE CONDITIONS POSSIBLE. S to SW winds 75 to 85 kt. Seas 17 to 26 ft in SW to W swell. Period 15 seconds. Scattered showers and isolated tstms through the day. Vsby 1 NM or less. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. Scattered showers and isolated tstms through the night. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SUN...TROPICAL STORM CONDITIONS POSSIBLE. $$ PMZ025-190345- Michoacan and Guerrero within 250 nm offshore- 835 AM PDT Wed Oct 18 2023 ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS. Within 60 nm of shore, SE to S winds 15 to 20 kt. Elsewhere, SE winds 20 to 25 kt, becoming SE to S 35 to 40 kt in the afternoon. Seas 8 to 12 ft in E to SE swell. Period 9 seconds. Scattered tstms. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. SE winds 20 to 25 kt Within 60 nm of shore, and SE to S 35 to 40 kt Elsewhere. Seas 8 to 12 ft in S swell. Period 8 seconds. Scattered showers and isolated tstms through the night. .THU...TROPICAL STORM CONDITIONS POSSIBLE. S winds 25 to 30 kt. Seas 8 to 12 ft in SW swell. Period 9 seconds. Scattered showers and isolated tstms through the day. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S winds 20 to 25 kt. Seas 8 to 12 ft in SW to W swell. Period 9 seconds. Scattered showers and isolated tstms through the night. .FRI...S to SW winds 15 to 20 kt. Seas 7 to 10 ft in W swell. Period 15 seconds. Scattered showers and isolated tstms through the day. .FRI NIGHT...S to SW winds 15 to 20 kt. Seas 7 to 10 ft in W to NW swell. Period 21 seconds. Scattered showers and isolated tstms through the night. .SAT...S to SW winds 15 to 20 kt. Seas 7 to 10 ft in W to NW swell. Period 20 seconds. .SAT NIGHT...S to SW winds 10 to 15 kt. Seas 6 to 9 ft in W to NW swell. Period 18 seconds. .SUN...SW winds 10 to 15 kt. Seas 6 to 8 ft in W to NW swell. Period 17 seconds. $$ PMZ026-190345- Oaxaca W of Puerto Angel within 250 nm offshore- 835 AM PDT Wed Oct 18 2023 .TODAY...SE to S winds 15 to 20 kt. Seas 6 to 9 ft in E swell. Period 10 seconds. Scattered showers and isolated tstms through the day. .TONIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft in E swell. Period 17 seconds. Scattered showers and isolated tstms through the night. .THU...N of 14N, NE winds 10 kt, shifting to SW in the afternoon. S of 14N, SE to S winds 15 to 20 kt. Seas 5 to 7 ft in SW to W swell. Period 17 seconds. .THU NIGHT...S winds 15 to 20 kt. Seas 5 to 7 ft. Period 16 seconds. .FRI...N of 14N, NE winds 10 kt, shifting to SW in the afternoon. S of 14N, S winds 15 to 20 kt. Seas 5 to 7 ft. Period 16 seconds. .FRI NIGHT...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell. Period 21 seconds. .SAT...S winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell. Period 20 seconds. .SAT NIGHT...S winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell. Period 19 seconds. .SUN...S winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell. Period 17 seconds. $$ PMZ028-190345- Oaxaca E of Puerto Angel within 300 nm offshore including the Gulf of Tehuantepec- 835 AM PDT Wed Oct 18 2023 ...GALE WARNING... .TODAY...N to NE winds 25 to 35 kt N of 14N, diminishing to 20 to 30 kt soon, and NE 15 to 20 kt S of 14N. Seas 7 to 11 ft in N to NE swell. Period 10 seconds. Scattered showers and isolated tstms through the day. .TONIGHT...N winds 25 to 30 kt N of 14N, and NE 10 to 15 kt S of 14N. Seas 5 to 7 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .THU...NE winds 20 to 25 kt. Seas 4 to 6 ft. Period 17 seconds. .THU NIGHT...N winds 20 to 25 kt N of 14N, and NE 10 to 15 kt S of 14N. Seas 4 to 6 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .FRI...N to NE winds 20 to 25 kt. Seas 5 to 7 ft. Period 16 seconds. .FRI NIGHT...NW to N winds 15 to 25 kt N of 14N, and NE 10 kt S of 14N. Seas 5 to 7 ft. Period 17 seconds. .SAT...N winds 20 to 25 kt N of 14N, and NE 10 to 15 kt S of 14N. Seas 6 to 8 ft. Period 20 seconds. .SAT NIGHT...N of 14N, NW to N winds 15 to 20 kt. S of 14N, NE to E winds 10 kt, shifting to W to NW late. Seas 6 to 8 ft. Period 19 seconds. .SUN...NE winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell. Period 18 seconds. $$ PMZ029-190345- Offshore Chiapas E of 94W- 835 AM PDT Wed Oct 18 2023 .TODAY...E of 93W, variable winds less than 5 kt. W of 93W, N to NE winds 10 to 15 kt, shifting to NW in the afternoon. Seas 6 to 8 ft in NW swell. Period 10 seconds. .TONIGHT...NW winds 10 kt. Seas 4 to 6 ft in NW swell. Period 12 seconds. .THU...NW to N winds 10 kt, shifting to W in the afternoon. Seas 3 to 5 ft. Period 17 seconds. .THU NIGHT...Variable winds less than 5 kt, becoming N 10 kt late. Seas 3 to 5 ft. Period 17 seconds. .FRI...N winds 10 kt in the morning, becoming variable winds less than 5 kt. Seas 3 to 5 ft in SW swell. Period 16 seconds. .FRI NIGHT...Variable winds less than 5 kt, becoming W 10 kt late. Seas 3 to 5 ft. Period 17 seconds. Scattered showers and isolated tstms through the night. .SAT...E to SE winds 10 kt in the morning, becoming variable winds less than 5 kt. Seas 4 to 6 ft in SW swell. Period 17 seconds. .SAT NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in SW swell. Period 16 seconds. .SUN...Variable winds less than 5 kt, becoming SE 10 kt in the afternoon. Seas 4 to 6 ft in SW swell. Period 16 seconds. $$ Forecaster Lewitsky