Coastal Waters Forecast
Issued by NWS
Issued by NWS
113 FZAK52 PAFC 211046 CWFALU Coastal Waters Forecast National Weather Service Anchorage Alaska 246 AM AKDT Fri Aug 21 2026 Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. 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. PKZ199-212330- 246 AM AKDT Fri Aug 21 2026 .SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS... A 1000 mb low Fri morning moves to 63N 172W, then to the Norton Sound Fri afternoon at 998 mb, and then inland by Sat morning. Its front moves across the Bering through Sat morning. A 996 mb low moves to 420 nm SW of Gambell by Sun morning. $$ PKZ750-212330- Sitkinak to Castle Cape out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY... .TODAY...SW wind 15 kt. Seas 3 ft. .TONIGHT...S wind 25 kt. Seas 5 ft. Rain. .SAT...NW wind 25 kt. Seas 5 ft. .SAT NIGHT...NW wind 25 kt. Seas 5 ft. .SUN...NW wind 25 kt. Seas 4 ft. .MON...Variable wind 10 kt. Seas 3 ft. .TUE...W wind 20 kt. Seas 4 ft. $$ PKZ751-212330- Sitkinak to Castle Cape from 15 to 100 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY... .TODAY...SW wind 15 kt. Seas 4 ft. .TONIGHT...SW wind 25 kt. Seas 7 ft. Rain. .SAT...W wind 25 kt. Seas 7 ft. .SAT NIGHT...NW wind 25 kt. Seas 7 ft. .SUN...NW wind 25 kt. Seas 7 ft. .MON THROUGH TUE...W wind 15 kt. Seas 6 ft. $$ PKZ752-212330- Castle Cape to Cape Tolstoi out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TODAY...Variable wind 10 kt becoming SW 20 kt in the afternoon. Seas 2 ft. .TONIGHT...SW wind 25 kt. Seas 4 ft. Rain. .SAT...NW wind 20 kt. Seas 4 ft. .SAT NIGHT...NW wind 20 kt. Seas 3 ft. .SUN THROUGH TUE...W wind 15 kt. Seas 3 ft. $$ PKZ753-212330- Castle Cape to Cape Tolstoi from 15 to 100 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TODAY...Variable wind 10 kt becoming SW 20 kt in the afternoon. Seas 4 ft. .TONIGHT...SW wind 25 kt. Seas 7 ft. Rain. .SAT...W wind 20 kt. Seas 7 ft. .SAT NIGHT...NW wind 20 kt. Seas 6 ft. .SUN THROUGH TUE...W wind 15 kt. Seas 6 ft. $$ PKZ754-212330- Cape Tolstoi to Cape Sarichef out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...SW wind 15 kt becoming S 25 kt in the afternoon. Seas 4 ft. Rain. .TONIGHT...SW wind 25 kt. Seas 5 ft. .SAT...NW wind 20 kt. Seas 4 ft. .SAT NIGHT...NW wind 20 kt. Seas 3 ft. .SUN...Variable wind 10 kt. Seas 3 ft. .MON...SW wind 15 kt. Seas 5 ft. .TUE...W wind 15 kt. Seas 5 ft. $$ PKZ755-212330- Cape Tolstoi to Unalga Pass from 15 to 100 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...SW wind 25 kt. Seas 5 ft. .TONIGHT...SW wind 25 kt. Seas 6 ft. Rain. .SAT...NW wind 20 kt. Seas 5 ft. .SAT NIGHT...NW wind 20 kt. Seas 5 ft. .SUN THROUGH TUE...W wind 15 kt. Seas 6 ft. $$ PKZ756-212330- Port Heiden to Nelson Lagoon out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TODAY...S wind 20 kt. Seas 2 ft. Rain. .TONIGHT...S wind 25 kt. Seas 5 ft. Rain. .SAT...NW wind 20 kt. Seas 5 ft. .SAT NIGHT...NW wind 20 kt. Seas 5 ft. .SUN...Variable wind 10 kt. Seas 4 ft. .MON THROUGH TUE...W wind 20 kt. Seas 6 ft. $$ PKZ757-212330- Port Heiden to Nelson Lagoon from 15 to 60 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH SATURDAY... .TODAY...S wind 25 kt. Seas 4 ft. Rain. .TONIGHT...S wind 25 kt. Seas 5 ft. Rain. .SAT...NW wind 25 kt. Seas 7 ft. .SAT NIGHT...NW wind 25 kt. Seas 7 ft. .SUN...W wind 15 kt. Seas 4 ft. .MON...SW wind 20 kt. Seas 7 ft. .TUE...W wind 15 kt. Seas 6 ft. $$ PKZ758-212330- Nelson Lagoon to Cape Sarichef out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...S wind 15 kt increasing to 25 kt in the afternoon. Seas 3 ft. Rain. .TONIGHT...SW wind 25 kt. Seas 5 ft. Rain. .SAT...NW wind 15 kt. Seas 4 ft. .SAT NIGHT...NW wind 15 kt. Seas 5 ft. .SUN THROUGH TUE...W wind 15 kt. Seas 5 ft. $$ PKZ759-212330- Nelson Lagoon to Unalga Pass 15 to 70 nm- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...S wind 30 kt. Seas 6 ft. Rain. .TONIGHT...W wind 25 kt. Seas 6 ft. .SAT...NW wind 20 kt. Seas 5 ft. .SAT NIGHT...NW wind 15 kt. Seas 5 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 7 ft. .TUE...W wind 15 kt. Seas 6 ft. $$ PKZ768-212330- Unimak Pass- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...SW wind 25 kt. Seas 6 ft. Rain. .TONIGHT...W wind 25 kt. Seas 6 ft. .SAT...NW wind 20 kt. Seas 4 ft. .SAT NIGHT...NW wind 20 kt. Seas 4 ft. .SUN THROUGH MON...SW wind 15 kt. Seas 5 ft. .TUE...W wind 15 kt. Seas 6 ft. $$ PKZ770-212330- Unalga Pass to Nikolski Bering Side out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...S wind 25 kt. Seas 4 ft. Rain. .TONIGHT...W wind 20 kt. Seas 5 ft. .SAT...NW wind 15 kt. Seas 4 ft. .SAT NIGHT...Variable wind 10 kt. Seas 4 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 5 ft. .TUE...SW wind 15 kt. Seas 5 ft. $$ PKZ772-212330- Unalga Pass to Nikolski Bering Side from 15 to 85 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...SW wind 30 kt. Seas 6 ft. Rain. .TONIGHT...W wind 20 kt. Seas 6 ft. .SAT...NW wind 15 kt. Seas 5 ft. .SAT NIGHT...Variable wind 10 kt. Seas 5 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 7 ft. .TUE...SW wind 15 kt. Seas 6 ft. $$ PKZ771-212330- Unalaska Bay- 246 AM AKDT Fri Aug 21 2026 .TODAY...S wind 15 kt. Seas 2 ft. Rain. .TONIGHT...W wind 20 kt. Seas 2 ft. Rain. .SAT...NW wind 15 kt diminishing to 10 kt in the afternoon. Seas 4 ft. .SAT NIGHT...NW wind 10 kt. Seas 3 ft. .SUN THROUGH MON...Variable wind less than 10 kt. Seas 2 ft. .TUE...Variable wind less than 10 kt. Seas 2 ft. $$ PKZ773-212330- Unalga Pass to Nikolski Pacific Side out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...SW wind 25 kt. Seas 5 ft. Rain. .TONIGHT...W wind 20 kt. Seas 5 ft. .SAT...NW wind 15 kt. Seas 4 ft. .SAT NIGHT...W wind 15 kt. Seas 3 ft. .SUN...SW wind 15 kt. Seas 5 ft. .MON...SW wind 20 kt. Seas 6 ft. .TUE...W wind 15 kt. Seas 6 ft. $$ PKZ774-212330- Unalga Pass to Nikolski Pacific Side from 15 to 85 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...SW wind 25 kt. Seas 6 ft. .TONIGHT...W wind 25 kt. Seas 6 ft. .SAT...NW wind 15 kt. Seas 5 ft. .SAT NIGHT...NW wind 15 kt. Seas 4 ft. .SUN THROUGH TUE...W wind 15 kt. Seas 6 ft. $$ PKZ775-212330- Nikolski to Seguam Bering Side out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...W wind 25 kt. Seas 6 ft. .TONIGHT...W wind 20 kt. Seas 7 ft. .SAT...Variable wind 10 kt. Seas 5 ft. .SAT NIGHT...Variable wind 10 kt. Seas 4 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 6 ft. .TUE...SW wind 15 kt. Seas 6 ft. $$ PKZ776-212330- Nikolski to Seguam Bering Side from 15 to 85 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...SW wind 25 kt. Seas 7 ft. .TONIGHT...W wind 20 kt. Seas 7 ft. .SAT...Variable wind 10 kt. Seas 5 ft. .SAT NIGHT...S wind 15 kt. Seas 4 ft. .SUN...SW wind 25 kt. Seas 8 ft. .MON...SW wind 20 kt. Seas 8 ft. .TUE...SW wind 15 kt. Seas 6 ft. $$ PKZ777-212330- Nikolski to Seguam Pacfic Side out to 15 NM- 246 AM AKDT Fri Aug 21 2026 .TODAY...SW wind 20 kt. Seas 5 ft. .TONIGHT...W wind 20 kt. Seas 6 ft. .SAT...NW wind 15 kt. Seas 5 ft. .SAT NIGHT...Variable wind 10 kt. Seas 4 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 7 ft. .TUE...SW wind 15 kt. Seas 7 ft. $$ PKZ778-212330- Nikolski to Seguam Pacific Side from 15 to 75 NM- 246 AM AKDT Fri Aug 21 2026 .TODAY...SW wind 20 kt. Seas 6 ft. .TONIGHT...W wind 20 kt. Seas 7 ft. .SAT...NW wind 15 kt. Seas 5 ft. .SAT NIGHT...Variable wind 10 kt. Seas 4 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 7 ft. .TUE...SW wind 15 kt. Seas 7 ft. $$ PKZ780-212330- Seguam to Adak Bering Side out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...W wind 25 kt. Seas 6 ft. .TONIGHT...W wind 20 kt. Seas 6 ft. .SAT...Variable wind 10 kt. Seas 5 ft. .SAT NIGHT...S wind 20 kt. Seas 3 ft. .SUN...SW wind 25 kt. Seas 5 ft. .MON...SW wind 20 kt. Seas 5 ft. .TUE...SW wind 15 kt. Seas 3 ft. $$ PKZ781-212330- Seguam to Adak Bering Side from 15 to 85 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...W wind 25 kt. Seas 8 ft. .TONIGHT...W wind 20 kt. Seas 7 ft. .SAT...SW wind 15 kt. Seas 5 ft. .SAT NIGHT...S wind 25 kt. Seas 5 ft. .SUN...SW wind 30 kt. Seas 9 ft. .MON...SW wind 20 kt. Seas 7 ft. .TUE...SW wind 15 kt. Seas 4 ft. $$ PKZ782-212330- Seguam to Adak Pacific Side out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...W wind 25 kt. Seas 5 ft. .TONIGHT...W wind 20 kt. Seas 5 ft. .SAT...Variable wind 10 kt. Seas 4 ft. .SAT NIGHT...SW wind 20 kt. Seas 4 ft. .SUN...SW wind 25 kt. Seas 7 ft. .MON...SW wind 20 kt. Seas 8 ft. .TUE...SW wind 15 kt. Seas 7 ft. $$ PKZ783-212330- Seguam to Adak Pacific Side from 15 to 75 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...W wind 25 kt. Seas 7 ft. .TONIGHT...W wind 25 kt. Seas 7 ft. .SAT...W wind 15 kt. Seas 5 ft. .SAT NIGHT...SW wind 20 kt. Seas 4 ft. .SUN...SW wind 25 kt. Seas 8 ft. .MON...SW wind 20 kt. Seas 8 ft. .TUE...SW wind 15 kt. Seas 7 ft. $$ PKZ784-212330- Adak to Kiska Bering Side- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...W wind 25 kt. Seas 9 ft. .TONIGHT...W wind 20 kt. Seas 8 ft. .SAT...SW wind 20 kt. Seas 5 ft. Rain showers. .SAT NIGHT...S wind 30 kt. Seas 8 ft. .SUN...SW wind 30 kt. Seas 9 ft. .MON THROUGH TUE...S wind 20 kt. Seas 5 ft. $$ PKZ785-212330- Adak to Kiska Pacific Side- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY AND SATURDAY... .TODAY...W wind 25 kt. Seas 6 ft. .TONIGHT...W wind 20 kt. Seas 6 ft. .SAT...S wind 25 kt. Seas 6 ft. Rain showers. .SAT NIGHT...S wind 30 kt. Seas 9 ft. .SUN...SW wind 30 kt. Seas 10 ft. .MON...SW wind 20 kt. Seas 8 ft. .TUE...S wind 15 kt. Seas 7 ft. $$ PKZ786-212330- Kiska to Attu Bering Side- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY AND SATURDAY... .TODAY...W wind 25 kt. Seas 10 ft. .TONIGHT...SW wind 15 kt. Seas 7 ft. Isolated thunderstorms after midnight. .SAT...S wind 25 kt. Seas 5 ft. Rain showers. Isolated thunderstorms. .SAT NIGHT...S wind 30 kt. Seas 9 ft. .SUN...SW wind 25 kt. Seas 8 ft. .MON...SW wind 15 kt. Seas 5 ft. .TUE...S wind 25 kt. Seas 7 ft. $$ PKZ787-212330- Kiska to Attu Pacific Side- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY AND SATURDAY... .TODAY...SW wind 25 kt. Seas 8 ft. .TONIGHT...S wind 20 kt. Seas 6 ft. Rain showers. Isolated thunderstorms after midnight. .SAT...S wind 25 kt. Seas 7 ft. Rain showers. Isolated thunderstorms. .SAT NIGHT...S wind 30 kt. Seas 10 ft. .SUN...SW wind 30 kt. Seas 9 ft. .MON...SW wind 15 kt. Seas 6 ft. .TUE...S wind 25 kt. Seas 8 ft. $$ PKZ766-212330- Pribilof Islands Nearshore Waters- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...SW wind 25 kt. Seas 7 ft. Rain. .TONIGHT...NW wind 20 kt. Seas 6 ft. .SAT...NW wind 15 kt. Seas 5 ft. .SAT NIGHT...S wind 15 kt. Seas 5 ft. .SUN...S wind 30 kt. Seas 9 ft. .MON...SW wind 25 kt. Seas 9 ft. .TUE...W wind 15 kt. Seas 7 ft. $$ PKZ760-212330- Bristol Bay greater than 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY... .TODAY...S wind 20 kt. Seas 3 ft. .TONIGHT...S wind 25 kt. Seas 5 ft. Rain. .SAT...W wind 25 kt. Seas 7 ft. .SAT NIGHT...NW wind 25 kt. Seas 7 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 5 ft. .TUE...W wind 15 kt. Seas 6 ft. $$ PKZ761-212330- Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY SATURDAY... .TODAY...SW wind 15 kt. Seas 2 ft. .TONIGHT...S wind 20 kt. Seas 3 ft. Rain. .SAT...W wind 25 kt. Seas 6 ft. .SAT NIGHT...NW wind 25 kt. Seas 6 ft. .SUN...W wind 10 kt. Seas 4 ft. .MON THROUGH TUE...W wind 20 kt. Seas 6 ft. $$ PKZ762-212330- Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH SATURDAY... .TODAY...SW wind 15 kt becoming S 25 kt in the afternoon. Seas 2 ft. Rain. .TONIGHT...S wind 25 kt. Seas 4 ft. Rain. .SAT...W wind 25 kt. Seas 5 ft. .SAT NIGHT...NW wind 25 kt. Seas 4 ft. .SUN THROUGH MON...SW wind 20 kt. Seas 4 ft. .TUE...W wind 20 kt. Seas 5 ft. $$ PKZ763-212330- Kuskokwim Delta and Etolin Strait out to 15 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH SATURDAY... .TODAY...S wind 30 kt. Seas 5 ft. Rain. .TONIGHT...NW wind 30 kt. Seas 6 ft. .SAT...NW wind 30 kt. Seas 6 ft. .SAT NIGHT...N wind 20 kt. Seas 4 ft. .SUN THROUGH MON...SW wind 30 kt. Seas 6 ft. .TUE...W wind 20 kt. Seas 4 ft. $$ PKZ764-212330- Kuskokwim Delta from 15 to 80 NM- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH SATURDAY... .TODAY...S wind 30 kt. Seas 6 ft. Rain. .TONIGHT...W wind 25 kt. Seas 7 ft. .SAT...NW wind 25 kt. Seas 7 ft. .SAT NIGHT...NW wind 25 kt. Seas 7 ft. .SUN...SW wind 30 kt. Seas 9 ft. .MON...SW wind 25 kt. Seas 9 ft. .TUE...W wind 20 kt. Seas 7 ft. $$ PKZ765-212330- North and West of Nunivak Island- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY THROUGH SATURDAY... .TODAY...S wind 25 kt. Seas 6 ft. Rain. .TONIGHT...NW wind 25 kt. Seas 9 ft. .SAT...NW wind 25 kt. Seas 9 ft. .SAT NIGHT...N wind 15 kt. Seas 7 ft. .SUN...S wind 30 kt. Seas 10 ft. .MON...SW wind 25 kt. Seas 9 ft. .TUE...W wind 20 kt. Seas 7 ft. $$ PKZ767-212330- Saint Matthew Island Waters- 246 AM AKDT Fri Aug 21 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TODAY...NW wind 20 kt. Seas 6 ft. .TONIGHT...NW wind 25 kt. Seas 7 ft. .SAT...N wind 15 kt becoming S in the afternoon. Seas 7 ft. .SAT NIGHT...SE wind 30 kt. Seas 9 ft. .SUN...S wind 30 kt. Seas 10 ft. .MON...SW wind 25 kt. Seas 9 ft. .TUE...SW wind 20 kt. Seas 7 ft. $$