Coastal Waters Forecast
Issued by NWS
Issued by NWS
979 FZAK52 PAFC 172310 CWFALU Coastal Waters Forecast National Weather Service Anchorage Alaska 310 PM AKDT Mon Aug 17 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. PKZ199-181230- 310 PM AKDT Mon Aug 17 2026 .SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS... A 1000 mb low moves into the YK Delta through early Tue morning. A 1007 mb Bering low 30 nm SE of Atka lifts to 110 nm S of Cape Newenham Wed morning before continuing inland Wed afternoon. $$ PKZ750-181230- Sitkinak to Castle Cape out to 15 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...SW wind 20 kt. Seas 7 ft. .TUE...SW wind 15 kt. Seas 5 ft. .TUE NIGHT...Variable wind 10 kt. Seas 4 ft. Rain showers. .WED...SE wind 15 kt. Seas 4 ft. .WED NIGHT...Variable wind 10 kt. Seas 3 ft. .THU...Variable wind 10 kt. Seas 3 ft. .FRI...SW wind 15 kt. Seas 4 ft. .SAT...W wind 15 kt. Seas 5 ft. $$ PKZ751-181230- Sitkinak to Castle Cape from 15 to 100 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 20 kt. Seas 9 ft. .TUE...SW wind 15 kt. Seas 7 ft. .TUE NIGHT...SE wind 15 kt. Seas 7 ft. .WED AND WED NIGHT...SW wind 15 kt. Seas 6 ft. .THU...W wind 15 kt. Seas 5 ft. .FRI THROUGH SAT...W wind 20 kt. Seas 6 ft. $$ PKZ752-181230- Castle Cape to Cape Tolstoi out to 15 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...SW wind 20 kt. Seas 5 ft. .TUE...S wind 15 kt. Seas 3 ft. .TUE NIGHT...SE wind 15 kt. Seas 4 ft. Rain showers. .WED...Variable wind 10 kt. Seas 4 ft. .WED NIGHT...Variable wind 10 kt. Seas 3 ft. .THU...Variable wind 10 kt. Seas 3 ft. .FRI...SW wind 15 kt. Seas 4 ft. .SAT...W wind 20 kt. Seas 4 ft. $$ PKZ753-181230- Castle Cape to Cape Tolstoi from 15 to 100 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 20 kt. Seas 9 ft. .TUE...S wind 15 kt. Seas 7 ft. .TUE NIGHT...SE wind 15 kt. Seas 6 ft. .WED AND WED NIGHT...SW wind 15 kt. Seas 6 ft. .THU...Variable wind 10 kt. Seas 5 ft. .FRI...SW wind 20 kt. Seas 5 ft. .SAT...W wind 20 kt. Seas 6 ft. $$ PKZ754-181230- Cape Tolstoi to Cape Sarichef out to 15 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...SW wind 15 kt. Seas 6 ft. .TUE...S wind 20 kt. Seas 6 ft. Rain. .TUE NIGHT...SE wind 15 kt. Seas 5 ft. Rain showers. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU...W wind 15 kt. Seas 3 ft. .FRI...SW wind 20 kt. Seas 4 ft. .SAT...NW wind 20 kt. Seas 4 ft. $$ PKZ755-181230- Cape Tolstoi to Unalga Pass from 15 to 100 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT... .TONIGHT...S wind 20 kt. Seas 8 ft. .TUE...S wind 25 kt. Seas 7 ft. .TUE NIGHT...S wind 20 kt. Seas 8 ft. .WED AND WED NIGHT...W wind 15 kt. Seas 6 ft. .THU...W wind 15 kt. Seas 4 ft. .FRI...SW wind 20 kt. Seas 6 ft. .SAT...NW wind 20 kt. Seas 6 ft. $$ PKZ756-181230- Port Heiden to Nelson Lagoon out to 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 25 kt. Seas 5 ft. .TUE...S wind 15 kt. Seas 3 ft. .TUE NIGHT...SE wind 15 kt. Seas 3 ft. Rain showers. .WED...Variable wind 10 kt. Seas 2 ft. .WED NIGHT...Variable wind 10 kt. Seas 1 foot. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 20 kt. Seas 4 ft. .SAT...W wind 25 kt. Seas 8 ft. $$ PKZ757-181230- Port Heiden to Nelson Lagoon from 15 to 60 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 30 kt. Seas 8 ft. .TUE...S wind 15 kt. Seas 6 ft. .TUE NIGHT...SE wind 15 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 20 kt. Seas 6 ft. .SAT...W wind 20 kt. Seas 8 ft. $$ PKZ758-181230- Nelson Lagoon to Cape Sarichef out to 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 25 kt becoming S 15 kt after midnight. Seas 4 ft. .TUE...SE wind 20 kt. Seas 3 ft. Rain. .TUE NIGHT...SE wind 20 kt in the evening becoming variable 10 kt. Seas 2 ft. Rain showers. .WED...SW wind 15 kt. Seas 2 ft. .WED NIGHT...Variable wind 10 kt. Seas 2 ft. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 20 kt. Seas 5 ft. .SAT...W wind 25 kt. Seas 8 ft. $$ PKZ759-181230- Nelson Lagoon to Unalga Pass 15 to 70 nm- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 25 kt. Seas 7 ft. .TUE...SE wind 20 kt. Seas 5 ft. .TUE NIGHT...SE wind 15 kt in the evening becoming variable 10 kt. Seas 4 ft. .WED...W wind 15 kt. Seas 3 ft. .WED NIGHT...Variable wind 10 kt. Seas 3 ft. .THU THROUGH FRI...SW wind 20 kt. Seas 5 ft. .SAT...W wind 20 kt. Seas 9 ft. $$ PKZ768-181230- Unimak Pass- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...S wind 20 kt. Seas 6 ft. Rain. .TUE...SE wind 20 kt. Seas 6 ft. Rain. .TUE NIGHT...Variable wind 10 kt becoming W 15 kt after midnight. Seas 6 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...SW wind 15 kt. Seas 4 ft. .SAT...NW wind 20 kt. Seas 8 ft. $$ PKZ770-181230- Unalga Pass to Nikolski Bering Side out to 15 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...S wind 20 kt. Seas 3 ft. Patchy fog. Rain. .TUE...SE wind 15 kt. Seas 3 ft. .TUE NIGHT...W wind 15 kt. Seas 2 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 4 ft. .THU THROUGH FRI...SW wind 20 kt. Seas 4 ft. .SAT...NW wind 15 kt. Seas 8 ft. $$ PKZ772-181230- Unalga Pass to Nikolski Bering Side from 15 to 85 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...S wind 20 kt. Seas 5 ft. Patchy fog. Rain. .TUE...E wind 15 kt. Seas 4 ft. .TUE NIGHT...NW wind 15 kt. Seas 4 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 5 ft. .SAT...NW wind 20 kt. Seas 10 ft. $$ PKZ771-181230- Unalaska Bay- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...S wind 10 kt becoming SE after midnight. Seas 2 ft. Rain. .TUE...SE wind 20 kt becoming S 10 kt in the afternoon. Seas 2 ft. Rain. .TUE NIGHT...W wind 10 kt. Seas 1 foot. .WED...W wind 10 kt. Seas 2 ft. .WED NIGHT...W wind 15 kt. Seas 2 ft. .THU...W wind 10 kt. Seas 2 ft. .FRI...SW wind 15 kt. Seas 2 ft. .SAT...NW wind 15 kt. Seas 5 ft. $$ PKZ773-181230- Unalga Pass to Nikolski Pacific Side out to 15 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...S wind 20 kt. Seas 6 ft. Rain. .TUE...S wind 20 kt. Seas 6 ft. .TUE NIGHT...W wind 15 kt. Seas 6 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 4 ft. .SAT...NW wind 15 kt. Seas 4 ft. $$ PKZ774-181230- Unalga Pass to Nikolski Pacific Side from 15 to 85 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY THROUGH TUESDAY... .TONIGHT...S wind 25 kt. Seas 8 ft. Rain. .TUE...S wind 25 kt. Seas 8 ft. .TUE NIGHT...W wind 20 kt. Seas 7 ft. .WED AND WED NIGHT...NW wind 20 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 5 ft. .SAT...NW wind 20 kt. Seas 5 ft. $$ PKZ775-181230- Nikolski to Seguam Bering Side out to 15 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...SE wind 20 kt. Seas 6 ft. Patchy fog. Rain. .TUE...NW wind 20 kt. Seas 5 ft. .TUE NIGHT...NW wind 20 kt. Seas 5 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 5 ft. .SAT...NW wind 15 kt. Seas 8 ft. $$ PKZ776-181230- Nikolski to Seguam Bering Side from 15 to 85 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...E wind 15 kt. Seas 5 ft. Patchy fog. Rain. .TUE...NW wind 20 kt. Seas 5 ft. .TUE NIGHT...NW wind 20 kt. Seas 6 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 6 ft. .SAT...W wind 15 kt. Seas 9 ft. $$ PKZ777-181230- Nikolski to Seguam Pacfic Side out to 15 NM- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...SE wind 20 kt. Seas 7 ft. Patchy fog. Rain. .TUE...W wind 20 kt. Seas 6 ft. .TUE NIGHT...NW wind 20 kt. Seas 5 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 5 ft. .SAT...NW wind 15 kt. Seas 7 ft. $$ PKZ778-181230- Nikolski to Seguam Pacific Side from 15 to 75 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY THROUGH TUESDAY... .TONIGHT...S wind 25 kt. Seas 8 ft. Patchy fog. .TUE...W wind 25 kt. Seas 7 ft. .TUE NIGHT...NW wind 20 kt. Seas 7 ft. .WED...NW wind 20 kt. Seas 6 ft. .WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 5 ft. .SAT...NW wind 15 kt. Seas 6 ft. $$ PKZ780-181230- Seguam to Adak Bering Side out to 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TUESDAY... .TONIGHT...N wind 20 kt. Seas 3 ft. Patchy fog. .TUE...NW wind 25 kt. Seas 4 ft. .TUE NIGHT...NW wind 20 kt. Seas 4 ft. .WED AND WED NIGHT...W wind 15 kt. Seas 3 ft. .THU THROUGH FRI...W wind 20 kt. Seas 4 ft. .SAT...W wind 15 kt. Seas 7 ft. $$ PKZ781-181230- Seguam to Adak Bering Side from 15 to 85 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TUESDAY... .TONIGHT...NW wind 20 kt. Seas 4 ft. Patchy fog. .TUE...NW wind 25 kt. Seas 6 ft. .TUE NIGHT...NW wind 20 kt. Seas 6 ft. .WED AND WED NIGHT...W wind 15 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 6 ft. .SAT...W wind 15 kt. Seas 8 ft. $$ PKZ782-181230- Seguam to Adak Pacific Side out to 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TUESDAY... .TONIGHT...N wind 20 kt. Seas 6 ft. Patchy fog. .TUE...NW wind 25 kt. Seas 6 ft. .TUE NIGHT...NW wind 20 kt. Seas 5 ft. .WED...NW wind 15 kt. Seas 4 ft. .WED NIGHT...Variable wind 10 kt. Seas 4 ft. .THU THROUGH FRI...W wind 20 kt. Seas 5 ft. .SAT...W wind 15 kt. Seas 4 ft. $$ PKZ783-181230- Seguam to Adak Pacific Side from 15 to 75 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...NW wind 25 kt. Seas 8 ft. Patchy fog. .TUE...W wind 20 kt. Seas 7 ft. .TUE NIGHT...NW wind 20 kt. Seas 7 ft. .WED AND WED NIGHT...W wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 6 ft. .SAT...W wind 15 kt. Seas 5 ft. $$ PKZ784-181230- Adak to Kiska Bering Side- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...NW wind 20 kt. Seas 5 ft. Patchy fog. .TUE...NW wind 20 kt. Seas 5 ft. .TUE NIGHT...NW wind 15 kt. Seas 4 ft. .WED...Variable wind 10 kt. Seas 3 ft. .WED NIGHT...SW wind 20 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 7 ft. .SAT...SW wind 15 kt. Seas 7 ft. $$ PKZ785-181230- Adak to Kiska Pacific Side- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...NW wind 20 kt. Seas 7 ft. Patchy fog. .TUE...NW wind 20 kt. Seas 6 ft. .TUE NIGHT...NW wind 15 kt. Seas 5 ft. .WED...Variable wind 10 kt. Seas 4 ft. .WED NIGHT...SW wind 15 kt. Seas 5 ft. .THU THROUGH FRI...W wind 20 kt. Seas 6 ft. .SAT...SW wind 15 kt. Seas 5 ft. $$ PKZ786-181230- Kiska to Attu Bering Side- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...NW wind 15 kt. Seas 5 ft. Patchy fog. .TUE...Variable wind 10 kt. Seas 4 ft. .TUE NIGHT...Variable wind 10 kt. Seas 3 ft. .WED...S wind 15 kt. Seas 3 ft. .WED NIGHT...S wind 20 kt. Seas 4 ft. .THU THROUGH FRI...W wind 25 kt. Seas 9 ft. .SAT...SW wind 20 kt. Seas 7 ft. $$ PKZ787-181230- Kiska to Attu Pacific Side- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...NW wind 15 kt. Seas 7 ft. Patchy fog. .TUE...Variable wind 10 kt. Seas 5 ft. .TUE NIGHT...Variable wind 10 kt. Seas 4 ft. .WED...Variable wind 10 kt. Seas 4 ft. .WED NIGHT...SW wind 20 kt. Seas 5 ft. .THU THROUGH FRI...W wind 25 kt. Seas 9 ft. .SAT...SW wind 15 kt. Seas 5 ft. $$ PKZ766-181230- Pribilof Islands Nearshore Waters- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 25 kt diminishing to 15 kt after midnight. Seas 6 ft. Patchy fog. .TUE...Variable wind 10 kt. Seas 4 ft. .TUE NIGHT...NW wind 15 kt. Seas 4 ft. .WED AND WED NIGHT...NW wind 15 kt. Seas 5 ft. .THU...SW wind 20 kt. Seas 4 ft. .FRI THROUGH SAT...W wind 20 kt. Seas 11 ft. $$ PKZ760-181230- Bristol Bay greater than 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 30 kt. Seas 8 ft. .TUE...SW wind 20 kt. Seas 6 ft. .TUE NIGHT...SE wind 15 kt. Seas 4 ft. .WED...SE wind 15 kt. Seas 2 ft. .WED NIGHT...SW wind 10 kt. Seas 1 foot. .THU...W wind 15 kt. Seas 2 ft. .FRI...SW wind 20 kt. Seas 6 ft. .SAT...W wind 20 kt. Seas 7 ft. $$ PKZ761-181230- Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 25 kt. Seas 5 ft. .TUE...S wind 15 kt becoming SE in the afternoon. Seas 3 ft. .TUE NIGHT...SE wind 15 kt. Seas 3 ft. .WED...SE wind 15 kt. Seas 2 ft. .WED NIGHT...SW wind 10 kt. Seas 1 foot. .THU...SW wind 15 kt. Seas 1 foot. .FRI...SW wind 20 kt. Seas 2 ft. .SAT...W wind 20 kt. Seas 7 ft. $$ PKZ762-181230- Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 25 kt. Seas 5 ft. .TUE...SW wind 20 kt. Seas 3 ft. .TUE NIGHT...SE wind 15 kt. Seas 2 ft. Rain showers. .WED...SE wind 15 kt. Seas 2 ft. .WED NIGHT...E wind 10 kt. Seas 1 foot. .THU...SW wind 15 kt. Seas 1 foot. .FRI...SW wind 20 kt. Seas 5 ft. .SAT...W wind 20 kt. Seas 6 ft. $$ PKZ763-181230- Kuskokwim Delta and Etolin Strait out to 15 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...SW wind 25 kt. Seas 5 ft. .TUE...SW wind 20 kt. Seas 5 ft. .TUE NIGHT...S wind 20 kt. Seas 3 ft. .WED...E wind 10 kt. Seas 2 ft. .WED NIGHT...NW wind 10 kt. Seas 1 foot. .THU...SW wind 20 kt. Seas 2 ft. .FRI...SW wind 30 kt. Seas 7 ft. .SAT...W wind 25 kt. Seas 8 ft. $$ PKZ764-181230- Kuskokwim Delta from 15 to 80 NM- 310 PM AKDT Mon Aug 17 2026 ...SMALL CRAFT ADVISORY THROUGH TUESDAY... .TONIGHT...SW wind 30 kt. Seas 8 ft. .TUE...SW wind 25 kt. Seas 6 ft. .TUE NIGHT...S wind 15 kt. Seas 4 ft. .WED...E wind 10 kt. Seas 2 ft. .WED NIGHT...NW wind 10 kt. Seas 2 ft. .THU...SW wind 20 kt. Seas 3 ft. .FRI...SW wind 25 kt. Seas 9 ft. .SAT...W wind 25 kt. Seas 11 ft. $$ PKZ765-181230- North and West of Nunivak Island- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...NW wind 20 kt. Seas 5 ft. Patchy fog. .TUE...NW wind 15 kt. Seas 6 ft. .TUE NIGHT...N wind 15 kt. Seas 5 ft. .WED...Variable wind 10 kt. Seas 4 ft. .WED NIGHT...Variable wind 10 kt. Seas 3 ft. .THU...SW wind 20 kt. Seas 4 ft. .FRI...SW wind 25 kt. Seas 12 ft. .SAT...NW wind 25 kt. Seas 12 ft. $$ PKZ767-181230- Saint Matthew Island Waters- 310 PM AKDT Mon Aug 17 2026 .TONIGHT...N wind 20 kt. Seas 6 ft. Patchy fog. .TUE...N wind 15 kt. Seas 5 ft. .TUE NIGHT...N wind 15 kt. Seas 5 ft. .WED...NW wind 15 kt. Seas 4 ft. .WED NIGHT...SW wind 15 kt. Seas 3 ft. .THU...SW wind 20 kt. Seas 8 ft. .FRI THROUGH SAT...NW wind 25 kt. Seas 15 ft. $$