Coastal Waters Forecast
Issued by NWS
Issued by NWS
140 FZAK51 PAFC 201043 CWFAER Coastal Waters Forecast National Weather Service Anchorage Alaska 243 AM AKDT Sun Sep 20 2026 Coastal Waters Forecast for the Northern Gulf of Alaska Coast up to 100 nm out including Kodiak Island and Cook Inlet. Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ197-202330- 243 AM AKDT Sun Sep 20 2026 .SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+ COOK INLET... A 976 mb low 150 nm S of Middleton Island moves to 20 nm SE of Montague Island at 981 mb this afternoon. This low then loops back to 190 nm SE of Kodiak City at 1001 mb Tue morning. A 1008 mb North Pacific low Mon morning moves to 260 nm SW of Sitka at 993 mb Tue morning. $$ PKZ710-202330- Cape Suckling to Gravel Point out to 15 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...E wind 35 kt becoming S by late this afternoon. Seas 12 ft. Rain showers. Isolated thunderstorms. .TONIGHT...S wind 25 kt diminishing to 15 kt after midnight. Seas 10 ft. Rain showers. Isolated thunderstorms. .MON...S wind 15 kt. Seas 9 ft. Rain showers. .MON NIGHT...SE wind 15 kt. Seas 7 ft. .TUE...NE wind 25 kt. Seas 8 ft. .WED...E wind 20 kt. Seas 6 ft. .THU...E wind 25 kt. Seas 4 ft. $$ PKZ711-202330- Gravel Point to Cape Cleare out to 15 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...E wind 30 kt becoming N 20 kt by late afternoon. Seas 11 ft. Rain showers. Isolated thunderstorms. .TONIGHT...W wind 15 kt in the evening becoming SW. Seas 9 ft. Isolated thunderstorms. .MON...S wind 20 kt. Seas 8 ft. Rain showers. .MON NIGHT...SE wind 15 kt. Seas 7 ft. .TUE...NE wind 20 kt. Seas 7 ft. .WED...E wind 15 kt. Seas 6 ft. .THU...SE wind 25 kt. Seas 4 ft. $$ PKZ712-202330- Cape Suckling to Cape Cleare from 15 to 75 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...E wind 30 kt becoming W 30 kt in the afternoon. Seas 14 ft. Rain showers. Isolated thunderstorms. .TONIGHT...SW wind 20 kt. Seas 11 ft. Rain showers. Isolated thunderstorms. .MON...SW wind 20 kt. Seas 10 ft. .MON NIGHT...SE wind 15 kt. Seas 8 ft. .TUE...E wind 30 kt. Seas 10 ft. .WED...E wind 20 kt. Seas 8 ft. .THU...SE wind 25 kt. Seas 5 ft. $$ PKZ715-202330- Cape Cleare to Gore Point out to 15 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...NE wind 25 kt becoming NW 20 kt by late afternoon. Seas 10 ft. Rain showers. Isolated thunderstorms. .TONIGHT...W wind 15 kt. Seas 7 ft. .MON...S wind 15 kt. Seas 6 ft. Rain. .MON NIGHT...E wind 15 kt. Seas 6 ft. .TUE...NE wind 20 kt. Seas 7 ft. .WED...Variable wind 10 kt. Seas 5 ft. .THU...E wind 25 kt. Seas 4 ft. $$ PKZ716-202330- Cape Cleare to Gore Point from 15 to 75 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...NE wind 25 kt becoming NW 20 kt by late afternoon. Seas 11 ft. Rain showers. Isolated thunderstorms. .TONIGHT...W wind 20 kt. Seas 8 ft. .MON...SW wind 20 kt. Seas 8 ft. .MON NIGHT...SE wind 15 kt. Seas 7 ft. .TUE...NE wind 25 kt. Seas 9 ft. .WED...NE wind 15 kt. Seas 7 ft. .THU...SE wind 25 kt. Seas 5 ft. $$ PKZ714-202330- Resurrection Bay- 243 AM AKDT Sun Sep 20 2026 .TODAY...N wind increasing to 20 kt. Seas building to 4 ft. Rain. .TONIGHT...N wind 10 kt. Seas 2 ft. Rain showers. .MON...Variable wind less than 10 kt becoming S 10 kt in the afternoon. Seas 1 ft. Rain showers. .MON NIGHT...S wind 10 kt. Seas 1 ft. .TUE THROUGH WED...N wind 15 kt. Seas 3 ft. .THU...S wind 15 kt. Seas 3 ft. $$ PKZ724-202330- Northwest Prince William Sound- 243 AM AKDT Sun Sep 20 2026 .TODAY...NE wind 20 kt. Seas 4 ft. Rain showers. .TONIGHT...N wind 15 kt becoming SE 10 kt after midnight. Seas 3 ft. Rain showers. .MON...SE 10 kt. Seas 2 ft. Rain showers. .MON NIGHT...E wind 10 kt. Seas 2 ft. .TUE...N wind 10 kt. Seas 2 ft. .WED...Variable wind less than 10 kt. Seas 2 ft. .THU...E wind 25 kt. Seas 4 ft. $$ PKZ725-202330- Central and Eastern Prince William Sound- 243 AM AKDT Sun Sep 20 2026 .TODAY...NE wind 20 kt. Seas 4 ft. Rain showers. .TONIGHT...E wind 20 kt becoming SE 10 kt after midnight. Seas 4 ft subsiding to 2 ft after midnight. Rain showers. .MON...SE wind 10 kt becoming S 15 kt in the afternoon. Seas 3 ft. Rain showers. .MON NIGHT...SE wind 15 kt. Seas 3 ft. .TUE...N wind 15 kt. Seas 3 ft. .WED...Variable wind less than 10 kt. Seas 2 ft. .THU...SE wind 25 kt. Seas 6 ft. $$ PKZ726-202330- Southwest Prince William Sound- 243 AM AKDT Sun Sep 20 2026 .TODAY...NE wind 20 kt. Seas 4 ft. Rain showers. .TONIGHT...W wind 15 kt becoming SW 10 kt after midnight. Seas 3 ft. Rain showers. .MON...SW wind 10 kt becoming S 15 kt in the afternoon. Seas 2 ft. Rain showers. .MON NIGHT...SE wind 10 kt. Seas 2 ft. .TUE...N wind 15 kt. Seas 3 ft. .WED...N wind 10 kt. Seas 2 ft. .THU...E wind 20 kt. Seas 4 ft. $$ PKZ720-202330- Port of Valdez- 243 AM AKDT Sun Sep 20 2026 .TODAY...Variable wind less than 10 kt becoming E 10 kt in the afternoon. Seas 2 ft. Rain showers. .TONIGHT...E wind 10 kt. Seas 2 ft. Rain showers. .MON...Variable wind less than 10 kt. Seas 1 ft. Rain showers. .MON NIGHT...Variable wind less than 10 kt. Seas 1 ft. .TUE THROUGH THU...E wind 10 kt. Seas 2 ft. $$ PKZ721-202330- Valdez Narrows- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...N wind increasing to 25 kt. Seas 3 ft. Rain showers. .TONIGHT...N wind 20 kt. Seas 3 ft. Rain showers. .MON...N wind 10 kt becoming NE wind 15 kt in the afternoon. Seas 1 ft. Rain showers. .MON NIGHT...NE wind 15 kt. Seas 1 ft. .TUE THROUGH THU...NE wind 15 kt. Seas 3 ft. $$ PKZ722-202330- Valdez Arm- 243 AM AKDT Sun Sep 20 2026 .TODAY...NE wind 20 kt. Seas 4 ft. Rain showers. .TONIGHT...NE wind 15 kt. Seas 3 ft. Rain showers. .MON...NE wind 15 kt. Seas 3 ft. Rain showers. .MON NIGHT...NE wind 15 kt. Seas 3 ft. .TUE THROUGH WED...NE wind 10 kt. Seas 2 ft. .THU...NE wind 20 kt. Seas 4 ft. $$ PKZ723-202330- Passage Canal- 243 AM AKDT Sun Sep 20 2026 .TODAY...W wind 10 kt increasing to 15 kt in the afternoon. Seas 2 ft. Rain showers. .TONIGHT...W wind 20 kt in the evening becoming variable less than 10 kt. Seas 2 ft. Rain showers. .MON...Variable wind less than 10 kt. Seas 1 ft. Rain showers. .MON NIGHT...E wind 10 kt. Seas 1 ft. .TUE THROUGH WED...W wind 10 kt. Seas 2 ft. .THU...E wind 15 kt. Seas 2 ft. $$ PKZ730-202330- West of Barren Islands Including Kamishak Bay- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...NW wind 25 kt. Seas 6 ft. .TONIGHT...W wind 25 kt. Seas 6 ft. .MON...W wind 25 kt. Seas 5 ft. Rain. .MON NIGHT...W wind 25 kt. Seas 5 ft. .TUE THROUGH WED...W wind 25 kt. Seas 6 ft. .THU...SE wind 35 kt. Seas 10 ft. $$ PKZ731-202330- Barren Islands East- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...NW wind 25 kt. Seas 9 ft. .TONIGHT...W wind 25 kt. Seas 7 ft. .MON...NW wind 25 kt. Seas 5 ft. .MON NIGHT...N wind 20 kt. Seas 4 ft. .TUE THROUGH WED...NW wind 25 kt. Seas 7 ft. .THU...SE wind 30 kt. Seas 6 ft. $$ PKZ733-202330- Gore Point to Marmot Island from 15 to 80 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...N wind 20 kt. Seas 10 ft. .TONIGHT...W wind 25 kt. Seas 8 ft. .MON...SW wind 20 kt. Seas 8 ft. .MON NIGHT...NE wind 15 kt. Seas 5 ft. .TUE...N wind 25 kt. Seas 8 ft. .WED...NW wind 20 kt. Seas 8 ft. .THU...SE wind 25 kt. Seas 6 ft. $$ PKZ732-202330- Marmot Island to Sitkinak out to 15 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...W wind 30 kt. Seas 9 ft. .TONIGHT...W wind 25 kt. Seas 8 ft. .MON...NW wind 20 kt except NW 15 kt N of Dangerous Cape. Seas 5 ft. .MON NIGHT...N wind 20 kt. Seas 4 ft. .TUE...NW wind 25 kt. Seas 7 ft. .WED...W wind 20 kt. Seas 6 ft. .THU...S wind 30 kt. Seas 9 ft. $$ PKZ734-202330- Marmot Island To Sitkinak from 15 to 85 NM- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...NW wind 30 kt. Seas 13 ft. .TONIGHT...W wind 30 kt. Seas 13 ft. .MON...NW wind 25 kt. N of Dangerous Cape, SW wind 20 kt in the morning becoming variable 10 kt. Seas 9 ft. .MON NIGHT...N wind 25 kt. Seas 7 ft. .TUE...N wind 25 kt. Seas 9 ft. .WED...W wind 20 kt. Seas 8 ft. .THU...S wind 30 kt. Seas 11 ft. $$ PKZ736-202330- Chiniak Bay- 243 AM AKDT Sun Sep 20 2026 .TODAY...NW wind 20 kt. Seas 4 ft. Rain showers. .TONIGHT...W wind 10 kt. Seas 2 ft. .MON...NW wind 10 kt in the morning becoming variable less than 10 kt. Seas 2 ft. .MON NIGHT...NW wind 10 kt. Seas 3 ft. .TUE...NW wind 20 kt. Seas 4 ft. .WED...W wind 15 kt. Seas 3 ft. .THU...S wind 30 kt. Seas 4 ft. $$ PKZ737-202330- Marmot Bay- 243 AM AKDT Sun Sep 20 2026 .TODAY...NW wind 20 kt. Seas 3 ft. Rain showers. .TONIGHT...W wind 15 kt diminishing to 10 kt after midnight. Seas 3 ft. .MON...NW wind 10 kt. Seas 2 ft. Rain showers. .MON NIGHT...NW wind 10 kt. Seas 2 ft. .TUE...NW wind 20 kt. Seas 3 ft. .WED...NW wind 15 kt. Seas 3 ft. .THU...SE wind 30 kt. Seas 6 ft. $$ PKZ738-202330- Shelikof Strait- 243 AM AKDT Sun Sep 20 2026 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...NW wind 25 kt. Seas 5 ft. .TONIGHT...W wind 25 kt. Seas 5 ft. .MON...NW wind 25 kt. Seas 4 ft. .MON NIGHT...NW wind 25 kt. Seas 4 ft. .TUE...NW wind 20 kt. Seas 4 ft. .WED...SW wind 20 kt. Seas 3 ft. .THU...SE wind 30 kt. Seas 6 ft. $$ PKZ742-202330- Cook Inlet Kalgin Island to Point Bede- 243 AM AKDT Sun Sep 20 2026 .TODAY...N wind 20 kt. Seas 5 ft subsiding to 3 ft in the afternoon. Rain. .TONIGHT...W wind 15 kt. Seas 2 ft. .MON...N wind 10 kt. Seas 2 ft. Rain showers. .MON NIGHT...SW wind 10 kt. Seas 2 ft. .TUE...N wind 15 kt. Seas 3 ft. .WED...N wind 10 kt. Seas 2 ft. .THU...E wind 25 kt. Seas 6 ft. $$ PKZ740-202330- Cook Inlet North of Kalgin Island- 243 AM AKDT Sun Sep 20 2026 .TODAY...N wind 15 kt diminishing to 10 kt in the afternoon. Seas 3 ft. Rain. .TONIGHT...NW wind 10 kt. Seas 2 ft. .MON...Variable wind less than 10 kt becoming NE 10 kt in the afternoon. Seas 1 ft. Rain showers. .MON NIGHT...E wind 10 kt. Seas 2 ft. .TUE THROUGH WED...NE wind 10 kt. Seas 2 ft. .THU...E wind 15 kt. Seas 4 ft. $$ PKZ741-202330- Kachemak Bay- 243 AM AKDT Sun Sep 20 2026 .TODAY...N wind 15 kt. Seas 2 ft. Rain. .TONIGHT...W wind 15 kt. Seas 4 ft. .MON...SW wind 10 kt. Seas 2 ft. Rain showers. .MON NIGHT...Variable wind less than 10 kt. Seas 2 ft. .TUE...N wind 10 kt. Seas 2 ft. .WED...Variable wind less than 10 kt. Seas 2 ft. .THU...SE wind 25 kt. Seas 3 ft. $$