Coastal Waters Forecast
Issued by NWS
Issued by NWS
618 FZAK52 PAFC 181224 CWFALU Coastal Waters Forecast National Weather Service Anchorage Alaska 424 AM AKDT Tue Aug 18 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. PKZ199-190115- 424 AM AKDT Tue Aug 18 2026 .SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS... A 1008 mb low 40 nm W of Nikolski propagates to 50 nm NW of Cold Bay at 1011 mb before moving inland across the AKPen Wed afternoon. $$ PKZ750-190115- Sitkinak to Castle Cape out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt. Seas 5 ft. .TONIGHT...Variable wind 10 kt. Seas 4 ft. Rain showers. .WED...SE wind 15 kt. Seas 4 ft. Rain showers. .WED NIGHT...Variable wind 10 kt. Seas 3 ft. .THU...Variable wind 10 kt. Seas 3 ft. .FRI...SW wind 20 kt. Seas 7 ft. .SAT...W wind 20 kt. Seas 7 ft. $$ PKZ751-190115- Sitkinak to Castle Cape from 15 to 100 NM- 424 AM AKDT Tue Aug 18 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...Variable wind 10 kt. Seas 8 ft. .TONIGHT...Variable wind 10 kt. Seas 7 ft. .WED...SW wind 15 kt. Seas 6 ft. .WED NIGHT...SW wind 15 kt. Seas 6 ft. .THU...W wind 15 kt. Seas 5 ft. .FRI...SW wind 20 kt. Seas 9 ft. .SAT...W wind 25 kt. Seas 11 ft. $$ PKZ752-190115- Castle Cape to Cape Tolstoi out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt. Seas 3 ft. .TONIGHT...SE wind 15 kt. Seas 3 ft. Rain showers. .WED...Variable wind 10 kt. Seas 3 ft. Rain showers. .WED NIGHT...Variable wind 10 kt. Seas 3 ft. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 20 kt. Seas 6 ft. .SAT...W wind 25 kt. Seas 7 ft. $$ PKZ753-190115- Castle Cape to Cape Tolstoi from 15 to 100 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt. Seas 7 ft. .TONIGHT...SE wind 15 kt. Seas 6 ft. .WED...S wind 15 kt. Seas 6 ft. .WED NIGHT...SW wind 15 kt. Seas 6 ft. .THU...W wind 15 kt. Seas 5 ft. .FRI...SW wind 20 kt. Seas 9 ft. .SAT...W wind 25 kt. Seas 9 ft. $$ PKZ754-190115- Cape Tolstoi to Cape Sarichef out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 20 kt. Seas 6 ft. Rain. .TONIGHT...SE wind 15 kt. Seas 6 ft. Rain showers. .WED...Variable wind 10 kt. Seas 5 ft. .WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU...W wind 15 kt. Seas 3 ft. .FRI...W wind 20 kt. Seas 7 ft. .SAT...NW wind 20 kt. Seas 5 ft. $$ PKZ755-190115- Cape Tolstoi to Unalga Pass from 15 to 100 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 20 kt. Seas 7 ft. .TONIGHT...S wind 20 kt. Seas 7 ft. .WED...W wind 15 kt. Seas 7 ft. .WED NIGHT...W wind 15 kt. Seas 5 ft. .THU...W wind 15 kt. Seas 4 ft. .FRI...W wind 20 kt. Seas 9 ft. .SAT...NW wind 20 kt. Seas 8 ft. $$ PKZ756-190115- Port Heiden to Nelson Lagoon out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt. Seas 3 ft. .TONIGHT...SE wind 20 kt. Seas 3 ft. Rain showers. .WED...Variable wind 10 kt. Seas 2 ft. .WED NIGHT...Variable wind 10 kt. Seas 2 ft. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 25 kt. Seas 7 ft. .SAT...W wind 30 kt. Seas 16 ft. $$ PKZ757-190115- Port Heiden to Nelson Lagoon from 15 to 60 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt. Seas 5 ft. .TONIGHT...SE wind 20 kt. Seas 4 ft. Rain showers. .WED...Variable wind 10 kt. Seas 2 ft. .WED NIGHT...Variable wind 10 kt. Seas 2 ft. .THU...W wind 15 kt. Seas 3 ft. .FRI...SW wind 25 kt. Seas 8 ft. .SAT...W wind 25 kt. Seas 16 ft. $$ PKZ758-190115- Nelson Lagoon to Cape Sarichef out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...SE wind 20 kt. Seas 3 ft. Rain. .TONIGHT...SE wind 15 kt. Seas 2 ft. Rain showers. .WED...Variable wind 10 kt. Seas 2 ft. .WED NIGHT...Variable wind 10 kt. Seas 2 ft. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 25 kt. Seas 8 ft. .SAT...NW wind 25 kt. Seas 14 ft. $$ PKZ759-190115- Nelson Lagoon to Unalga Pass 15 to 70 nm- 424 AM AKDT Tue Aug 18 2026 .TODAY...SE wind 20 kt. Seas 4 ft. .TONIGHT...SE wind 15 kt. Seas 3 ft. .WED...Variable wind 10 kt. Seas 3 ft. .WED NIGHT...Variable wind 10 kt. Seas 3 ft. .THU...W wind 20 kt. Seas 4 ft. .FRI...W wind 25 kt. Seas 9 ft. .SAT...NW wind 25 kt. Seas 14 ft. $$ PKZ768-190115- Unimak Pass- 424 AM AKDT Tue Aug 18 2026 .TODAY...SE wind 20 kt. Seas 6 ft. Rain. .TONIGHT...W wind 15 kt. Seas 6 ft. .WED...W wind 15 kt. Seas 5 ft. .WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU...W wind 20 kt. Seas 3 ft. .FRI...W wind 20 kt. Seas 8 ft. .SAT...NW wind 20 kt. Seas 11 ft. $$ PKZ770-190115- Unalga Pass to Nikolski Bering Side out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt. Seas 2 ft. .TONIGHT...W wind 15 kt. Seas 2 ft. .WED...W wind 15 kt. Seas 3 ft. .WED NIGHT...NW wind 15 kt. Seas 3 ft. .THU...SW wind 20 kt. Seas 3 ft. .FRI...W wind 20 kt. Seas 7 ft. .SAT...NW wind 15 kt. Seas 9 ft. $$ PKZ772-190115- Unalga Pass to Nikolski Bering Side from 15 to 85 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...E wind 15 kt becoming NW in the afternoon. Seas 3 ft. .TONIGHT...W wind 15 kt. Seas 4 ft. .WED...NW wind 15 kt. Seas 4 ft. Patchy fog. .WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 7 ft. .SAT...NW wind 15 kt. Seas 9 ft. $$ PKZ771-190115- Unalaska Bay- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt in the morning becoming variable less than 10 kt. Seas 2 ft. Rain. .TONIGHT...W wind 15 kt. Seas 2 ft. .WED...W wind 15 kt. Seas 2 ft. .WED NIGHT...W wind 15 kt. Seas 3 ft. .THU...W wind 10 kt. Seas 2 ft. .FRI...W wind 20 kt. Seas 2 ft. .SAT...NW wind 20 kt. Seas 5 ft. $$ PKZ773-190115- Unalga Pass to Nikolski Pacific Side out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 20 kt. Seas 6 ft. .TONIGHT...W wind 15 kt. Seas 6 ft. .WED...W wind 15 kt. Seas 5 ft. .WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 20 kt. Seas 6 ft. .SAT...NW wind 15 kt. Seas 5 ft. $$ PKZ774-190115- Unalga Pass to Nikolski Pacific Side from 15 to 85 NM- 424 AM AKDT Tue Aug 18 2026 ...SMALL CRAFT ADVISORY TODAY... .TODAY...S wind 25 kt. Seas 8 ft. .TONIGHT...W wind 20 kt. Seas 7 ft. .WED...W wind 15 kt. Seas 6 ft. .WED NIGHT...NW wind 20 kt. Seas 5 ft. .THU...W wind 20 kt. Seas 4 ft. .FRI...W wind 20 kt. Seas 8 ft. .SAT...NW wind 15 kt. Seas 6 ft. $$ PKZ775-190115- Nikolski to Seguam Bering Side out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 20 kt. Seas 5 ft. .TONIGHT...W wind 20 kt. Seas 5 ft. .WED...NW wind 20 kt. Seas 5 ft. Patchy fog. .WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 20 kt. Seas 7 ft. .SAT...W wind 15 kt. Seas 8 ft. $$ PKZ776-190115- Nikolski to Seguam Bering Side from 15 to 85 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 20 kt. Seas 5 ft. .TONIGHT...NW wind 20 kt. Seas 5 ft. .WED...NW wind 20 kt. Seas 5 ft. Patchy fog. .WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 7 ft. .SAT...W wind 15 kt. Seas 8 ft. $$ PKZ777-190115- Nikolski to Seguam Pacfic Side out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...W wind 20 kt. Seas 6 ft. .TONIGHT...NW wind 20 kt. Seas 5 ft. .WED...NW wind 20 kt. Seas 5 ft. Patchy fog. .WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 7 ft. .SAT...NW wind 15 kt. Seas 6 ft. $$ PKZ778-190115- Nikolski to Seguam Pacific Side from 15 to 75 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...W wind 20 kt. Seas 7 ft. .TONIGHT...W wind 20 kt. Seas 6 ft. .WED...NW wind 20 kt. Seas 6 ft. Patchy fog. .WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 7 ft. .SAT...NW wind 15 kt. Seas 6 ft. $$ PKZ780-190115- Seguam to Adak Bering Side out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 20 kt. Seas 4 ft. .TONIGHT...NW wind 20 kt. Seas 4 ft. .WED...NW wind 15 kt. Seas 4 ft. Patchy fog. .WED NIGHT...W wind 15 kt. Seas 3 ft. .THU...SW wind 20 kt. Seas 5 ft. .FRI...W wind 20 kt. Seas 7 ft. .SAT...Variable wind 10 kt. Seas 6 ft. $$ PKZ781-190115- Seguam to Adak Bering Side from 15 to 85 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 20 kt. Seas 5 ft. .TONIGHT...NW wind 20 kt. Seas 6 ft. .WED...NW wind 15 kt. Seas 4 ft. Patchy fog. .WED NIGHT...W wind 15 kt. Seas 3 ft. .THU...SW wind 25 kt. Seas 7 ft. .FRI...W wind 25 kt. Seas 8 ft. .SAT...W wind 15 kt. Seas 8 ft. $$ PKZ782-190115- Seguam to Adak Pacific Side out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 20 kt. Seas 5 ft. .TONIGHT...NW wind 20 kt. Seas 5 ft. .WED...NW wind 15 kt. Seas 4 ft. Patchy fog. .WED NIGHT...W wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 7 ft. .SAT...Variable wind 10 kt. Seas 4 ft. $$ PKZ783-190115- Seguam to Adak Pacific Side from 15 to 75 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...W wind 20 kt. Seas 7 ft. .TONIGHT...NW wind 20 kt. Seas 6 ft. .WED...NW wind 15 kt. Seas 5 ft. Patchy fog. .WED NIGHT...W wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 7 ft. .SAT...W wind 15 kt. Seas 6 ft. $$ PKZ784-190115- Adak to Kiska Bering Side- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 20 kt. Seas 5 ft. .TONIGHT...NW wind 15 kt. Seas 4 ft. .WED...W wind 15 kt. Seas 3 ft. Patchy fog. .WED NIGHT...SW wind 20 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 8 ft. .SAT...SW wind 20 kt. Seas 6 ft. $$ PKZ785-190115- Adak to Kiska Pacific Side- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 20 kt. Seas 6 ft. .TONIGHT...NW wind 15 kt. Seas 5 ft. .WED...Variable wind 10 kt. Seas 4 ft. Patchy fog. .WED NIGHT...SW wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 7 ft. .SAT...SW wind 15 kt. Seas 6 ft. $$ PKZ786-190115- Kiska to Attu Bering Side- 424 AM AKDT Tue Aug 18 2026 .TODAY...Variable wind 10 kt. Seas 4 ft. .TONIGHT...Variable wind 10 kt. Seas 3 ft. .WED...SW wind 15 kt. Seas 3 ft. Patchy fog. .WED NIGHT...S wind 20 kt. Seas 4 ft. .THU...SW wind 30 kt. Seas 10 ft. .FRI...W wind 25 kt. Seas 9 ft. .SAT...S wind 20 kt. Seas 6 ft. $$ PKZ787-190115- Kiska to Attu Pacific Side- 424 AM AKDT Tue Aug 18 2026 .TODAY...Variable wind 10 kt. Seas 5 ft. .TONIGHT...Variable wind 10 kt. Seas 4 ft. .WED...S wind 15 kt. Seas 4 ft. Patchy fog. .WED NIGHT...SW wind 20 kt. Seas 5 ft. .THU THROUGH FRI...W wind 25 kt. Seas 10 ft. .SAT...S wind 20 kt. Seas 5 ft. $$ PKZ766-190115- Pribilof Islands Nearshore Waters- 424 AM AKDT Tue Aug 18 2026 .TODAY...Variable wind 10 kt. Seas 4 ft. Areas of fog. .TONIGHT...NW wind 15 kt. Seas 4 ft. .WED...NW wind 15 kt. Seas 4 ft. Patchy fog. .WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU...SW wind 25 kt. Seas 7 ft. .FRI...W wind 25 kt. Seas 10 ft. .SAT...W wind 20 kt. Seas 10 ft. $$ PKZ760-190115- Bristol Bay greater than 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...SW wind 20 kt becoming S 10 kt in the afternoon. Seas 5 ft. .TONIGHT...SE wind 10 kt increasing to 15 kt after midnight. Seas 3 ft. Rain showers. .WED...SE wind 15 kt becoming E in the afternoon. Seas 2 ft. .WED NIGHT...E wind 10 kt. Seas 2 ft. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 25 kt. Seas 7 ft. .SAT...W wind 25 kt. Seas 13 ft. $$ PKZ761-190115- Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...S wind 15 kt in the morning becoming variable less than 10 kt. Seas 3 ft. .TONIGHT...SE wind 15 kt. Seas 2 ft. .WED...SE wind 15 kt diminishing to 10 kt in the afternoon. Seas 2 ft. Rain. .WED NIGHT...S wind 10 kt. Seas 1 foot. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 25 kt. Seas 6 ft. .SAT...W wind 25 kt. Seas 12 ft. $$ PKZ762-190115- Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...SW wind 20 kt becoming S 10 kt in the afternoon. Seas 3 ft. .TONIGHT...SE wind 10 kt increasing to 15 kt after midnight. Seas 2 ft. Rain showers. .WED...SE wind 15 kt diminishing to 10 kt in the afternoon. Seas 2 ft. Rain showers. .WED NIGHT...E wind 10 kt. Seas 1 foot. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 25 kt. Seas 6 ft. .SAT...W wind 25 kt. Seas 7 ft. $$ PKZ763-190115- Kuskokwim Delta and Etolin Strait out to 15 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...SW wind 20 kt. Seas 4 ft. .TONIGHT...S wind 15 kt becoming SE after midnight. Seas 3 ft. .WED...SE wind 10 kt in the morning becoming variable less than 10 kt. Seas 2 ft. .WED NIGHT...NW wind 10 kt. Seas 2 ft. .THU...SW wind 25 kt. Seas 4 ft. .FRI...SW wind 30 kt. Seas 8 ft. .SAT...NW wind 30 kt. Seas 8 ft. $$ PKZ764-190115- Kuskokwim Delta from 15 to 80 NM- 424 AM AKDT Tue Aug 18 2026 .TODAY...SW wind 20 kt. Seas 6 ft. .TONIGHT...S wind 15 kt. Seas 4 ft. .WED...E wind 10 kt. Seas 3 ft. .WED NIGHT...NW wind 10 kt. Seas 2 ft. .THU...SW wind 20 kt. Seas 5 ft. .FRI...SW wind 30 kt. Seas 12 ft. .SAT...NW wind 30 kt. Seas 14 ft. $$ PKZ765-190115- North and West of Nunivak Island- 424 AM AKDT Tue Aug 18 2026 .TODAY...NW wind 15 kt. Seas 5 ft. .TONIGHT...N wind 15 kt. Seas 5 ft. .WED...N wind 15 kt. Seas 5 ft. .WED NIGHT...NW wind 15 kt. Seas 3 ft. .THU...SW wind 20 kt. Seas 6 ft. .FRI THROUGH SAT...NW wind 30 kt. Seas 14 ft. $$ PKZ767-190115- Saint Matthew Island Waters- 424 AM AKDT Tue Aug 18 2026 .TODAY...N wind 15 kt. Seas 5 ft. .TONIGHT...N wind 15 kt. Seas 4 ft. .WED...NW wind 15 kt. Seas 4 ft. Patchy fog. .WED NIGHT...SW wind 15 kt. Seas 4 ft. .THU...SW wind 20 kt. Seas 6 ft. .FRI THROUGH SAT...W wind 25 kt. Seas 13 ft. $$