Storm Warning 72, NWS Anchorage, AK

381 
FZAK52 PAFC 152228
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
228 PM AKDT Tue Apr 15 2025

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.

PKZ199-161100-
228 PM AKDT Tue Apr 15 2025
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 977 mb low 50 nm SE of Unalaska will move to 40 nm S of Togiak 
at 986 mb by Thu morning. The low will push a front east along the
AKPEN through Thu morning. A Kamchatka low will sweep a front 
across the western Aleutians by Thu afternoon.

$$

PKZ750-161100-
Sitkinak to Castle Cape out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...E wind 40 kt becoming SE 30 kt after midnight. Seas
17 ft. Rain.
.WED...SE wind 35 kt. Seas 15 ft. Rain.
.WED NIGHT...S wind 30 kt. Seas 13 ft. Rain showers.
.THU...SW wind 25 kt. Seas 11 ft.
.THU NIGHT...W wind 25 kt. Seas 8 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.SAT...SW wind 15 kt. Seas 4 ft.
.SUN...S wind 20 kt. Seas 6 ft.

$$

PKZ751-161100-
Sitkinak to Castle Cape from 15 to 100 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SE wind 40 kt. Seas 21 ft. Rain.
.WED...S wind 40 kt. Seas 21 ft.
.WED NIGHT...S wind 35 kt. Seas 17 ft.
.THU AND THU NIGHT...W wind 30 kt. Seas 14 ft.
.FRI...W wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 9 ft.

$$

PKZ752-161100-
Castle Cape to Cape Tolstoi out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 15 ft. Rain.
.WED...S wind 30 kt. Seas 14 ft. Rain showers.
.WED NIGHT...SW wind 25 kt. Seas 10 ft.
.THU AND THU NIGHT...W wind 25 kt. Seas 8 ft.
.FRI...SW wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 5 ft.

$$

PKZ753-161100-
Castle Cape to Cape Tolstoi from 15 to 100 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...S wind 45 kt. Seas 24 ft.
.WED...S wind 40 kt. Seas 21 ft.
.WED NIGHT...SW wind 30 kt. Seas 15 ft.
.THU AND THU NIGHT...W wind 30 kt. Seas 14 ft.
.FRI THROUGH SUN...S wind 25 kt. Seas 10 ft.

$$

PKZ754-161100-
Cape Tolstoi to Cape Sarichef out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 10 ft. Rain.
.WED...NW wind 30 kt. Seas 9 ft. Rain showers.
.WED NIGHT...W wind 30 kt. Seas 9 ft.
.THU...W wind 30 kt. Seas 8 ft.
.THU NIGHT...SW wind 20 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 8 ft.

$$

PKZ755-161100-
Cape Tolstoi to Cape Sarichef from 15 to 100 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SE wind 35 kt becoming SW after midnight. Seas 16 ft.
Rain.
.WED...W wind 40 kt. Seas 16 ft.
.WED NIGHT...W wind 40 kt. Seas 16 ft.
.THU...W wind 35 kt. Seas 15 ft.
.THU NIGHT...SW wind 25 kt. Seas 12 ft.
.FRI THROUGH SUN...S wind 25 kt. Seas 11 ft.

$$

PKZ756-161100-
Port Heiden to Nelson Lagoon out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING TONIGHT...

.TONIGHT...E wind 35 kt. Seas 9 ft.
.WED...S wind 25 kt. Seas 6 ft.
.WED NIGHT...W wind 25 kt. Seas 8 ft. Rain showers and snow
showers.
.THU...W wind 30 kt. Seas 11 ft.
.THU NIGHT...W wind 25 kt. Seas 10 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...SE wind 20 kt. Seas 3 ft.

$$

PKZ757-161100-
Port Heiden to Nelson Lagoon from 15 to 60 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING TONIGHT...

.TONIGHT...E wind 40 kt. Seas 14 ft. Rain.
.WED...SE wind 30 kt. Seas 9 ft.
.WED NIGHT...SW wind 20 kt becoming W 30 kt after midnight. Seas
11 ft. Rain.
.THU...W wind 30 kt. Seas 12 ft.
.THU NIGHT...W wind 25 kt. Seas 11 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...SE wind 20 kt. Seas 4 ft.

$$

PKZ758-161100-
Nelson Lagoon to Cape Sarichef out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 40 kt. Seas 14 ft. Rain and snow.
.WED...NW wind 35 kt. Seas 14 ft. Rain showers.
.WED NIGHT...W wind 35 kt. Seas 15 ft. Widespread rain showers.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...SW wind 25 kt. Seas 9 ft.
.FRI...S wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 3 ft.

$$

PKZ759-161100-
Nelson Lagoon to Cape Sarichef from 15 to 70 NM-
228 PM AKDT Tue Apr 15 2025

...STORM WARNING TONIGHT...

.TONIGHT...NE wind 50 kt. Seas 21 ft. Rain and snow.
.WED...NW wind 40 kt. Seas 17 ft. Rain and snow.
.WED NIGHT...NW wind 35 kt. Seas 18 ft. Widespread rain showers.
.THU...W wind 30 kt. Seas 15 ft.
.THU NIGHT...W wind 25 kt. Seas 10 ft.
.FRI...S wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 5 ft.

$$

PKZ770-161100-
Cape Sarichef to Nikolski Bering Side out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...STORM WARNING TONIGHT...

.TONIGHT...N wind 50 kt. Seas 22 ft. Snow and rain.
.WED...NW wind 45 kt. Seas 22 ft. Snow and rain.
.WED NIGHT...NW wind 40 kt. Seas 18 ft.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...S wind 20 kt. Seas 7 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 4 ft.
.SUN...S wind 20 kt. Seas 4 ft.

$$

PKZ772-161100-
Cape Sarichef to Nikolski Bering Side from 15 to 85 NM-
228 PM AKDT Tue Apr 15 2025

...STORM WARNING THROUGH WEDNESDAY...

.TONIGHT...N wind 50 kt. Seas 23 ft. Snow.
.WED...NW wind 50 kt. Seas 23 ft. Snow and rain.
.WED NIGHT...NW wind 40 kt. Seas 19 ft.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...S wind 20 kt. Seas 8 ft.
.FRI...S wind 15 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 6 ft.
.SUN...S wind 20 kt. Seas 6 ft.

$$

PKZ771-161100-
Unalaska Bay-
228 PM AKDT Tue Apr 15 2025

...STORM WARNING TONIGHT...

.TONIGHT...N wind 50 kt. Gusts to 60 kt. Seas 20 ft. Snow.
.WED...NW wind 45 kt. Gusts to 55 kt. Seas 19 ft. Snow.
.WED NIGHT...NW wind 40 kt diminishing to 30 kt after midnight. 
Gusts to 50 kt diminishing to 40 kt after midnight. Seas 17 ft 
subsiding to 9 ft after midnight.
.THU...W wind 30 kt. Seas 5 ft.
.THU NIGHT...S wind 15 kt. Seas 2 ft.
.FRI...S wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 2 ft.

$$

PKZ773-161100-
Cape Sarichef to Nikolski Pacific Side out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...STORM WARNING TONIGHT...

.TONIGHT...N wind 50 kt. Seas 17 ft. Snow and rain.
.WED...NW wind 45 kt. Seas 15 ft. Snow and rain.
.WED NIGHT...NW wind 40 kt. Seas 12 ft.
.THU...W wind 30 kt. Seas 10 ft.
.THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...SW wind 20 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 10 ft.
.SUN...S wind 20 kt. Seas 10 ft.

$$

PKZ774-161100-
Cape Sarichef to Nikolski Pacific Side from 15 to 85 NM-
228 PM AKDT Tue Apr 15 2025

...STORM WARNING TONIGHT...

.TONIGHT...N wind 50 kt. Seas 21 ft. Rain and snow.
.WED...NW wind 45 kt. Seas 19 ft. Snow showers.
.WED NIGHT...NW wind 40 kt. Seas 16 ft.
.THU...W wind 30 kt. Seas 13 ft.
.THU NIGHT...SW wind 25 kt. Seas 8 ft.
.FRI THROUGH SAT...S wind 25 kt. Seas 11 ft.
.SUN...SW wind 20 kt. Seas 11 ft.

$$

PKZ775-161100-
Nikolski to Seguam Bering Side out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 40 kt. Seas 17 ft.
.WED...NW wind 40 kt. Seas 18 ft.
.WED NIGHT...NW wind 35 kt diminishing to 25 kt after midnight.
Seas 15 ft.
.THU AND THU NIGHT...SW wind 25 kt. Seas 9 ft.
.FRI THROUGH SAT...S wind 20 kt. Seas 7 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ776-161100-
Nikolski to Seguam Bering Side from 15 to 85 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 40 kt. Seas 18 ft.
.WED...NW wind 40 kt. Seas 18 ft.
.WED NIGHT...NW wind 35 kt diminishing to 25 kt after midnight.
Seas 16 ft.
.THU...SW wind 25 kt. Seas 11 ft.
.THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI THROUGH SAT...SE wind 20 kt. Seas 7 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ777-161100-
Nikolski to Seguam Pacfic Side out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...N wind 45 kt. Seas 15 ft.
.WED...NW wind 40 kt. Seas 15 ft.
.WED NIGHT...NW wind 30 kt. Seas 12 ft.
.THU AND THU NIGHT...SW wind 25 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 9 ft.
.SAT...S wind 25 kt. Seas 10 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ778-161100-
Nikolski to Seguam Pacific Side from 15 to 75 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NW wind 45 kt. Seas 17 ft.
.WED...NW wind 40 kt. Seas 17 ft.
.WED NIGHT...NW wind 35 kt. Seas 14 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 30 kt. Seas 11 ft.
.FRI THROUGH SAT...S wind 25 kt. Seas 11 ft.
.SUN...SW wind 25 kt. Seas 11 ft.

$$

PKZ780-161100-
Seguam to Adak Bering Side out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 12 ft.
.WED...NW wind 30 kt. Seas 12 ft.
.WED NIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Seas 10 ft.
.THU AND THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...S wind 15 kt. Seas 4 ft.
.SAT...S wind 20 kt. Seas 4 ft.
.SUN...SW wind 25 kt. Seas 4 ft.

$$

PKZ781-161100-
Seguam to Adak Bering Side from 15 to 85 NM-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 13 ft.
.WED...NW wind 30 kt. Seas 13 ft.
.WED NIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Seas 11 ft.
.THU...S wind 25 kt. Seas 8 ft.
.THU NIGHT...SW wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...S wind 20 kt. Seas 6 ft.
.SUN...SW wind 25 kt. Seas 7 ft.

$$

PKZ782-161100-
Seguam to Adak Pacific Side out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 9 ft.
.WED...NW wind 30 kt. Seas 9 ft.
.WED NIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Seas 8 ft.
.THU AND THU NIGHT...SW wind 25 kt. Seas 9 ft.
.FRI THROUGH SAT...S wind 20 kt. Seas 9 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ783-161100-
Seguam to Adak Pacific Side from 15 to 75 NM-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 12 ft.
.WED...NW wind 30 kt. Seas 12 ft.
.WED NIGHT...W wind 25 kt. Seas 10 ft.
.THU AND THU NIGHT...SW wind 30 kt. Seas 10 ft.
.FRI...S wind 20 kt. Seas 10 ft.
.SAT...S wind 25 kt. Seas 11 ft.
.SUN...SW wind 25 kt. Seas 10 ft.

$$

PKZ784-161100-
Adak to Kiska Bering Side-
228 PM AKDT Tue Apr 15 2025

.TONIGHT...N wind 20 kt. Seas 7 ft.
.WED...W wind 15 kt. Seas 6 ft.
.WED NIGHT...S wind 20 kt. Seas 6 ft.
.THU...S wind 25 kt. Seas 8 ft.
.THU NIGHT...SW wind 20 kt. Seas 8 ft.
.FRI...SE wind 15 kt. Seas 7 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SUN...W wind 25 kt. Seas 7 ft.

$$

PKZ785-161100-
Adak to Kiska Pacific Side-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY TONIGHT AND WEDNESDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 9 ft.
.WED...W wind 20 kt. Seas 6 ft.
.WED NIGHT...SW wind 20 kt becoming S 30 kt after midnight. Seas
8 ft.
.THU...S wind 30 kt. Seas 10 ft.
.THU NIGHT...SW wind 15 kt. Seas 9 ft.
.FRI...SE wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 11 ft.

$$

PKZ786-161100-
Kiska to Attu Bering Side-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...W wind 15 kt. Seas 6 ft.
.WED...SW wind 15 kt. Seas 5 ft.
.WED NIGHT...SE wind 25 kt. Seas 8 ft. Rain.
.THU...SW wind 25 kt. Seas 8 ft.
.THU NIGHT...SW wind 15 kt. Seas 8 ft.
.FRI...Variable wind 10 kt. Seas 8 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 8 ft.

$$

PKZ787-161100-
Kiska to Attu Pacific Side-
228 PM AKDT Tue Apr 15 2025

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...W wind 15 kt. Seas 6 ft.
.WED...S wind 20 kt. Seas 6 ft.
.WED NIGHT...S wind 30 kt. Seas 10 ft. Rain.
.THU...SW wind 25 kt. Seas 9 ft.
.THU NIGHT...S wind 15 kt. Seas 8 ft.
.FRI...NE wind 15 kt. Seas 10 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.

$$

PKZ766-161100-
Pribilof Islands Nearshore Waters-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 40 kt. Seas 16 ft. Freezing spray.
.WED...NW wind 45 kt. Seas 18 ft. Freezing spray.
.WED NIGHT...NW wind 40 kt diminishing to 30 kt after midnight.
Seas 16 ft. Freezing spray.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...Variable wind 10 kt. Seas 4 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.SAT...E wind 20 kt. Seas 6 ft.
.SUN...S wind 15 kt. Seas 6 ft.

$$

PKZ760-161100-
Bristol Bay greater than 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...E wind 45 kt. Seas 16 ft. Rain and snow.
.WED...SE wind 35 kt. Seas 12 ft.
.WED NIGHT...SE wind 25 kt. Seas 7 ft.
.THU AND THU NIGHT...W wind 25 kt. Seas 9 ft.
.FRI...SW wind 25 kt. Seas 8 ft.
.SAT...SE wind 15 kt. Seas 3 ft.
.SUN...SE wind 20 kt. Seas 4 ft.

$$

PKZ761-161100-
Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING TONIGHT...

.TONIGHT...E wind 40 kt. Seas 11 ft.
.WED...SE wind 30 kt. Seas 9 ft.
.WED NIGHT...SE wind 25 kt. Seas 5 ft. Rain showers and snow
showers.
.THU AND THU NIGHT...W wind 25 kt. Seas 9 ft.
.FRI...SW wind 25 kt. Seas 8 ft.
.SAT...S wind 15 kt. Seas 2 ft.
.SUN...SE wind 20 kt. Seas 3 ft.

$$

PKZ762-161100-
Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING TONIGHT...

.TONIGHT...E wind 40 kt. Seas 12 ft. Rain and snow.
.WED...E wind 30 kt. Seas 10 ft.
.WED NIGHT...SE wind 25 kt. Seas 6 ft. Rain showers and snow
showers.
.THU AND THU NIGHT...W wind 25 kt. Seas 6 ft.
.FRI...SW wind 25 kt. Seas 5 ft.
.SAT...S wind 15 kt. Seas 2 ft.
.SUN...E wind 20 kt. Seas 3 ft.

$$

PKZ763-161100-
Kuskokwim Delta and Etolin Strait out to 15 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 35 kt. Seas in ice free waters 6 ft. Snow and
rain.
.WED...NE wind 30 kt. Seas in ice free waters 6 ft. Rain and snow.
.WED NIGHT...N wind 25 kt. Seas in ice free waters 3 ft. Rain with
snow.
.THU...NW wind 25 kt. Seas in ice free waters 4 ft.
.THU NIGHT...W wind 20 kt. Seas in ice free waters 4 ft.
.FRI...W wind 15 kt. Seas in ice free waters 1 foot.
.SAT THROUGH SUN...E wind 20 kt. Seas in ice free waters 1 foot.

$$

PKZ764-161100-
Kuskokwim Delta from 15 to 80 NM-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 40 kt. Seas in ice free waters 15 ft. Snow and
rain.
.WED...NE wind 40 kt. Seas in ice free waters 11 ft subsiding to
7 ft in the afternoon. Snow.
.WED NIGHT...N wind 35 kt. Seas in ice free waters 9 ft. Snow and
rain.
.THU...W wind 30 kt. Seas in ice free waters 10 ft.
.THU NIGHT...W wind 25 kt. Seas in ice free waters 9 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 6 ft.
.SAT THROUGH SUN...SE wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ765-161100-
North and West of Nunivak Island-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 25 kt increasing to 35 kt after midnight.
.WED...N wind 40 kt. Snow.
.WED NIGHT...N wind 40 kt becoming NW 30 kt after midnight.
.THU...NW wind 30 kt.
.THU NIGHT...W wind 20 kt.
.FRI...Variable wind 10 kt.
.SAT THROUGH SUN...E wind 20 kt.

$$

PKZ767-161100-
Saint Matthew Island Waters-
228 PM AKDT Tue Apr 15 2025

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...N wind 20 kt increasing to 30 kt after midnight. Seas
in ice free waters 4 ft.
.WED...N wind 40 kt E of Saint Matthew Island...N 25 kt W of Saint
Matthew Island. Seas in ice free waters 5 ft. Freezing spray.
.WED NIGHT...N wind 35 kt E of Saint Matthew Island... NW 25 kt W
of Saint Matthew Island. Seas in ice free waters 5 ft. Freezing 
spray.
.THU...NW wind 25 kt. Seas in ice free waters 4 ft.
.THU NIGHT...NW wind 15 kt. Seas in ice free waters 2 ft.
.FRI...S wind 15 kt. Seas in ice free waters 5 ft.
.SAT...E wind 20 kt. Seas in ice free waters 6 ft.
.SUN...NE wind 25 kt. Seas in ice free waters 8 ft.

$$

876 
FZAK52 PAFC 161059
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
259 AM AKDT Wed Apr 16 2025

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.

PKZ199-162330-
259 AM AKDT Wed Apr 16 2025
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 975 mb low 40 nm north of Cold Bay moves 70 nm south of Goodnews
Bay at 985 mb by Thu morning, then moves over Southwest Alaska 
Thu afternoon. A front moves into the western Bering and Aleutians
Thu morning through Fri morning.

$$

PKZ750-162330-
Sitkinak to Castle Cape out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt. Seas 15 ft. Rain.
.TONIGHT...S wind 30 kt. Seas 13 ft.
.THU...SW wind 25 kt. Seas 11 ft.
.THU NIGHT...W wind 25 kt. Seas 8 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 5 ft.

$$

PKZ751-162330-
Sitkinak to Castle Cape from 15 to 100 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 40 kt. Seas 21 ft.
.TONIGHT...S wind 35 kt. Seas 17 ft.
.THU...SW wind 30 kt. Seas 14 ft.
.THU NIGHT...W wind 30 kt. Seas 13 ft.
.FRI THROUGH SAT...SW wind 25 kt. Seas 11 ft.
.SUN...S wind 30 kt. Seas 11 ft.

$$

PKZ752-162330-
Castle Cape to Cape Tolstoi out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...S wind 30 kt. Seas 14 ft. Rain showers.
.TONIGHT...SW wind 25 kt. Seas 10 ft.
.THU...W wind 30 kt. Seas 8 ft.
.THU NIGHT...W wind 30 kt. Seas 8 ft.
.FRI...SW wind 15 kt. Seas 4 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 4 ft.

$$

PKZ753-162330-
Castle Cape to Cape Tolstoi from 15 to 100 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING TODAY...

.TODAY...S wind 40 kt. Seas 21 ft.
.TONIGHT...SW wind 30 kt. Seas 15 ft.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...W wind 30 kt. Seas 13 ft.
.FRI...SW wind 20 kt. Seas 9 ft.
.SAT THROUGH SUN...SW wind 25 kt. Seas 12 ft.

$$

PKZ754-162330-
Cape Tolstoi to Cape Sarichef out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt. Seas 9 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 9 ft.
.THU...W wind 30 kt. Seas 8 ft.
.THU NIGHT...SW wind 20 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.SAT...S wind 25 kt. Seas 8 ft.
.SUN...S wind 20 kt. Seas 8 ft.

$$

PKZ755-162330-
Cape Tolstoi to Cape Sarichef from 15 to 100 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH THURSDAY...

.TODAY...W wind 40 kt. Seas 16 ft.
.TONIGHT...W wind 40 kt. Seas 16 ft.
.THU...W wind 35 kt. Seas 15 ft.
.THU NIGHT...SW wind 30 kt. Seas 12 ft.
.FRI...SW wind 25 kt. Seas 9 ft.
.SAT...S wind 30 kt. Seas 13 ft.
.SUN...SW wind 25 kt. Seas 11 ft.

$$

PKZ756-162330-
Port Heiden to Nelson Lagoon out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...S wind 25 kt. Seas 6 ft. Rain showers.
.TONIGHT...SW wind 25 kt. Seas 8 ft. Widespread rain and snow showers.
.THU...W wind 30 kt. Seas 11 ft. Widespread rain showers.
.THU NIGHT...W wind 30 kt. Seas 10 ft.
.FRI...SW wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...S wind 25 kt. Seas 2 ft.

$$

PKZ757-162330-
Port Heiden to Nelson Lagoon from 15 to 60 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 9 ft.
.TONIGHT...W wind 25 kt. Seas 11 ft. Rain showers and snow showers.
.THU...W wind 30 kt. Seas 12 ft. Snow showers and rain showers.
.THU NIGHT...W wind 30 kt. Seas 11 ft.
.FRI...SW wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...S wind 25 kt. Seas 5 ft.

$$

PKZ758-162330-
Nelson Lagoon to Cape Sarichef out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 35 kt. Seas 14 ft. Rain showers.
.TONIGHT...W wind 35 kt. Seas 15 ft. Widespread snow and rain showers.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...SW wind 25 kt. Seas 9 ft.
.FRI...S wind 15 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 3 ft.
.SUN...S wind 25 kt. Seas 3 ft.

$$

PKZ759-162330-
Nelson Lagoon to Cape Sarichef from 15 to 70 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH THURSDAY...

.TODAY...NW wind 40 kt. Seas 17 ft. Rain and snow.
.TONIGHT...NW wind 35 kt. Seas 18 ft. Snow showers and rain showers.
.THU...W wind 35 kt. Seas 15 ft.
.THU NIGHT...SW wind 25 kt. Seas 10 ft.
.FRI...SW wind 15 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 6 ft.
.SUN...S wind 25 kt. Seas 6 ft.

$$

PKZ770-162330-
Cape Sarichef to Nikolski Bering Side out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 45 kt. Seas 22 ft. Snow.
.TONIGHT...NW wind 40 kt. Seas 18 ft. Rain showers.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...S wind 20 kt. Seas 4 ft.
.SAT...S wind 30 kt. Seas 4 ft.
.SUN...SW wind 25 kt. Seas 3 ft.

$$

PKZ772-162330-
Cape Sarichef to Nikolski Bering Side from 15 to 85 NM-
259 AM AKDT Wed Apr 16 2025

...STORM WARNING TODAY...

.TODAY...NW wind 50 kt. Seas 23 ft.
.TONIGHT...NW wind 40 kt. Seas 19 ft.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...SW wind 25 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 7 ft.
.SUN...SW wind 25 kt. Seas 7 ft.

$$

PKZ771-162330-
Unalaska Bay-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 45 kt. Gusts to 55 kt. Seas 21 ft. Snow.
.TONIGHT...NW wind 40 kt diminishing to 30 kt after midnight. 
Gusts to 50 kt diminishing to 40 kt after midnight. Seas 17 ft 
subsiding to 9 ft after midnight. Snow showers and rain showers.
.THU...W wind 30 kt diminishing to 20 kt in the afternoon. Gusts to 
40 kt early. Seas 9 ft subsiding to 5 ft in the afternoon.
.THU NIGHT...SW wind 15 kt. Seas 2 ft.
.FRI...S wind 10 kt. Seas 2 ft.
.SAT...S wind 20 kt. Seas 2 ft.
.SUN...SW wind 20 kt. Seas 2 ft.

$$

PKZ773-162330-
Cape Sarichef to Nikolski Pacific Side out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 45 kt. Seas 15 ft. Snow.
.TONIGHT...NW wind 40 kt. Seas 12 ft.
.THU...W wind 30 kt. Seas 10 ft.
.THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT...S wind 30 kt. Seas 10 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ774-162330-
Cape Sarichef to Nikolski Pacific Side from 15 to 85 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH THURSDAY...

.TODAY...NW wind 45 kt. Seas 19 ft. Rain.
.TONIGHT...NW wind 40 kt. Seas 16 ft.
.THU...W wind 35 kt diminishing to 25 kt in the afternoon.
Seas 13 ft.
.THU NIGHT...SW wind 30 kt. Seas 9 ft.
.FRI...SW wind 25 kt. Seas 9 ft.
.SAT...S wind 30 kt. Seas 13 ft.
.SUN...SW wind 25 kt. Seas 12 ft.

$$

PKZ775-162330-
Nikolski to Seguam Bering Side out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 40 kt. Seas 18 ft.
.TONIGHT...NW wind 35 kt becoming W 25 kt after midnight. 
Seas 15 ft.
.THU...W wind 25 kt. Seas 10 ft. Rain.
.THU NIGHT...SW wind 25 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 6 ft.
.SAT...S wind 25 kt. Seas 7 ft.
.SUN...SW wind 25 kt. Seas 7 ft.

$$

PKZ776-162330-
Nikolski to Seguam Bering Side from 15 to 85 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 40 kt. Seas 18 ft.
.TONIGHT...NW wind 35 kt becoming W 25 kt after midnight. 
Seas 16 ft.
.THU...W wind 25 kt. Seas 11 ft.
.THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...S wind 20 kt. Seas 6 ft.
.SAT...S wind 25 kt. Seas 8 ft.
.SUN...SW wind 25 kt. Seas 8 ft.

$$

PKZ777-162330-
Nikolski to Seguam Pacfic Side out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING TODAY...

.TODAY...NW wind 40 kt. Seas 15 ft.
.TONIGHT...NW wind 30 kt. Seas 12 ft.
.THU...W wind 25 kt. Seas 8 ft. Rain.
.THU NIGHT...SW wind 30 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 8 ft.
.SAT...S wind 25 kt. Seas 10 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ778-162330-
Nikolski to Seguam Pacific Side from 15 to 75 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 40 kt. Seas 17 ft.
.TONIGHT...NW wind 35 kt. Seas 14 ft.
.THU...W wind 25 kt. Seas 10 ft. Rain.
.THU NIGHT...SW wind 30 kt. Seas 11 ft.
.FRI...S wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...SW wind 30 kt. Seas 14 ft.

$$

PKZ780-162330-
Seguam to Adak Bering Side out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt. Seas 12 ft.
.TONIGHT...W wind 25 kt diminishing to 15 kt after midnight. 
Seas 10 ft.
.THU...S wind 25 kt. Seas 7 ft. Rain.
.THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...S wind 15 kt. Seas 4 ft.
.SAT...S wind 20 kt. Seas 4 ft.
.SUN...SW wind 25 kt. Seas 5 ft.

$$

PKZ781-162330-
Seguam to Adak Bering Side from 15 to 85 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt. Seas 13 ft.
.TONIGHT...W wind 25 kt diminishing to 15 kt after midnight. 
Seas 11 ft.
.THU...S wind 25 kt. Seas 8 ft. Rain.
.THU NIGHT...SW wind 25 kt. Seas 7 ft.
.FRI...S wind 15 kt. Seas 6 ft.
.SAT...S wind 20 kt. Seas 7 ft.
.SUN...SW wind 25 kt. Seas 7 ft.

$$

PKZ782-162330-
Seguam to Adak Pacific Side out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt. Seas 9 ft.
.TONIGHT...W wind 25 kt diminishing to 15 kt after midnight. Seas 8 ft.
.THU...SW wind 20 kt becoming S 30 kt in the afternoon. Seas 8 ft. Rain.
.THU NIGHT...SW wind 25 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 8 ft.
.SAT THROUGH SUN...SW wind 25 kt. Seas 10 ft.

$$

PKZ783-162330-
Seguam to Adak Pacific Side from 15 to 75 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt. Seas 12 ft.
.TONIGHT...W wind 25 kt. Seas 10 ft.
.THU...S wind 30 kt. Seas 10 ft. Rain.
.THU NIGHT...SW wind 30 kt. Seas 10 ft.
.FRI...S wind 20 kt. Seas 9 ft.
.SAT...SW wind 30 kt. Seas 13 ft.
.SUN...SW wind 25 kt. Seas 13 ft.

$$

PKZ784-162330-
Adak to Kiska Bering Side-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...W wind 15 kt. Seas 6 ft.
.TONIGHT...SW wind 15 kt becoming S 25 kt after midnight. Seas 6 ft.
.THU...S wind 25 kt. Seas 8 ft. Rain.
.THU NIGHT...SW wind 20 kt. Seas 8 ft.
.FRI...SE wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...SW wind 25 kt. Seas 7 ft.

$$

PKZ785-162330-
Adak to Kiska Pacific Side-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...W wind 20 kt. Seas 6 ft.
.TONIGHT...SW wind 20 kt becoming S 30 kt after midnight. Seas 8 ft. Rain.
.THU...S wind 30 kt. Seas 10 ft. Rain.
.THU NIGHT...SW wind 20 kt. Seas 9 ft.
.FRI...S wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...SW wind 25 kt. Seas 12 ft.

$$

PKZ786-162330-
Kiska to Attu Bering Side-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...SW wind 15 kt. Seas 5 ft.
.TONIGHT...SE wind 25 kt. Seas 8 ft. Rain.
.THU...S wind 25 kt. Seas 8 ft.
.THU NIGHT...S wind 15 kt. Seas 8 ft.
.FRI...E wind 15 kt. Seas 7 ft.
.SAT THROUGH SUN...SW wind 25 kt. Seas 8 ft.

$$

PKZ787-162330-
Kiska to Attu Pacific Side-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...S wind 20 kt. Seas 6 ft.
.TONIGHT...S wind 30 kt. Seas 10 ft. Rain.
.THU...SW wind 25 kt. Seas 9 ft.
.THU NIGHT...S wind 20 kt. Seas 8 ft.
.FRI...E wind 15 kt. Seas 9 ft.
.SAT THROUGH SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ766-162330-
Pribilof Islands Nearshore Waters-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 45 kt. Seas 18 ft. Freezing spray.
.TONIGHT...NW wind 40 kt diminishing to 30 kt after midnight. 
Seas 16 ft. Freezing spray.
.THU...NW wind 25 kt. Seas 10 ft.
.THU NIGHT...Variable wind 10 kt. Seas 4 ft.
.FRI...SE wind 15 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ760-162330-
Bristol Bay greater than 15 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt. Gusts to 45 kt early. Seas 12 ft.
.TONIGHT...SE wind 25 kt. Seas 7 ft. Rain showers and snow showers.
.THU...W wind 30 kt. Seas 8 ft. Snow showers and rain showers.
.THU NIGHT...W wind 30 kt. Seas 10 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...SE wind 20 kt. Seas 4 ft.

$$

PKZ761-162330-
Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Gusts to 40 kt in the morning. Seas 9 ft.
.TONIGHT...SE wind 25 kt. Seas 5 ft. Rain showers and snow showers.
.THU...W wind 30 kt. Seas 7 ft. Widespread rain and snow showers.
.THU NIGHT...W wind 30 kt. Seas 10 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...SE wind 20 kt. Seas 2 ft.

$$

PKZ762-162330-
Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...E wind 30 kt. Gusts to 40 kt in the morning. Seas 10 ft.
.TONIGHT...SE wind 25 kt. Seas 6 ft. Widespread rain and snow showers.
.THU...W wind 25 kt. Seas 5 ft. Rain showers and snow showers.
.THU NIGHT...W wind 25 kt. Seas 7 ft.
.FRI...W wind 25 kt. Seas 5 ft.
.SAT THROUGH SUN...SE wind 15 kt. Seas 3 ft.

$$

PKZ763-162330-
Kuskokwim Delta and Etolin Strait out to 15 NM-
259 AM AKDT Wed Apr 16 2025

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 30 kt. Seas in ice free waters 5 ft. Rain and snow.
.TONIGHT...N wind 25 kt. Seas in ice free waters 3 ft. 
Widespread snow showers.
.THU...NW wind 25 kt. Seas in ice free waters 4 ft. Snow showers.
Freezing spray.
.THU NIGHT...W wind 25 kt. Seas in ice free waters 3 ft.
.FRI...SW wind 10 kt. Seas in ice free waters 1 foot.
.SAT THROUGH SUN...E wind 25 kt. Seas in ice free waters 1 foot.

$$

PKZ764-162330-
Kuskokwim Delta from 15 to 80 NM-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...NE wind 40 kt. Seas in ice free waters 11 ft subsiding to
7 ft in the afternoon. Rain and snow.
.TONIGHT...N wind 35 kt. Seas in ice free waters 9 ft. Snow.
.THU...NW wind 30 kt. Seas in ice free waters 10 ft. Freezing spray.
.THU NIGHT...W wind 30 kt. Seas in ice free waters 9 ft.
.FRI...SW wind 15 kt. Seas in ice free waters 5 ft.
.SAT...E wind 25 kt. Seas in ice free waters 5 ft.
.SUN...SE wind 20 kt. Seas in ice free waters 5 ft.

$$

PKZ765-162330-
North and West of Nunivak Island-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 40 kt. Snow.
.TONIGHT...N wind 40 kt becoming NW 30 kt after midnight.
.THU...NW wind 30 kt.
.THU NIGHT...W wind 20 kt.
.FRI...Variable wind 10 kt.
.SAT THROUGH SUN...NE wind 25 kt.

$$

PKZ767-162330-
Saint Matthew Island Waters-
259 AM AKDT Wed Apr 16 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 40 kt E of Saint Matthew Island...N 25 kt W of
Saint Matthew Island. Seas in ice free waters 5 ft. Freezing spray.
.TONIGHT...N wind 35 kt E of Saint Matthew Island...NW 25 kt W of
Saint Matthew Island. Seas in ice free waters 5 ft. Freezing spray.
.THU...NW wind 30 kt E of Saint Matthew Island... NW 20 kt W of
Saint Matthew Island. Seas in ice free waters 4 ft.
.THU NIGHT...NW wind 20 kt. Seas in ice free waters 2 ft.
.FRI...SE wind 15 kt. Seas in ice free waters 5 ft.
.SAT...NE wind 25 kt. Seas in ice free waters 7 ft.
.SUN...NE wind 30 kt. Seas in ice free waters 7 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
533 PM AKDT Mon Apr 14 2025

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3: This
afternoon through Thursday afternoon)...

Aside from some isolated showers and breezy winds, expect fairly
quiet weather for Southcentral through tomorrow morning. By
tomorrow afternoon, the weather becomes much more active as a
North Pacific low pushes its front into Southcentral. Strong winds
are likely, with gusts of 75 mph or greater possible. In
addition, expect a prolonged duration of low-elevation rain and
high-elevation snow along the north Gulf coast. The following
watches are in effect, with the potential for additional products
to be issued as we continue to assess the forecast:

- High Wind Watch for Anchorage Hillside and Eagle River: From
  late Tuesday night through Wednesday night. Southeast winds
  gusting as high as 90 mph.
- High Wind Watch for Portage: From Wednesday morning through late
  Wednesday night. East winds gusting as high as 90 mph.

Diving into the details: For the rest of today, expect offshore
flow and quieter weather as a compact low currently near Cape
Suckling continues to slide eastward towards Southeast Alaska.
Clearer skies have allowed surface temperatures to climb into the
30s and 40s across Southcentral. Instability from warm near-
surface temperatures is even producing showers along the slopes
surrounding Mat Valley, marking our gradual transition into our
convective warm season.

Through tomorrow, cloud cover will slowly increase as the front
of a North Pacific low pushes into Southcentral. The front will
first reach Kodiak Island tomorrow morning, then reach the north
Gulf coast by tomorrow evening. Southeast flow will lead to
upslope enhancement along Eastern Kenai; this, along with a
prolonged duration of moderate to heavy precipitation, could lead
to rain totals of 2 inches or greater in some areas. On the lee of
the Kenai and Chugach Mountains, downsloping will keep parts of
Anchorage, Western Kenai, Mat Valley, and Copper River Valley
fairly dry. Warm air advection with this front will likely lead to
rain for all but Thompson Pass and Turnagain Pass, with snow at
higher elevations.

The biggest story with this storm, however, will likely be the
winds. A tight surface pressure gradient will lead to strong
winds, especially through east- or southeast-oriented gaps and
passes, from late Tuesday night through most of Wednesday.
Currently, the areas of highest concern are the Anchorage
Hillside/Eagle River and Portage Valley, where models are showing
a strong and consistent signal for winds gusting to 75 mph or
greater. For the Anchorage Hillside/Eagle River zone, however,
there is a question of whether a strong north-south pressure
gradient will keep the strongest winds mostly over the Chugach
Mountains/Turnagain Arm and out of the Hillside. Other areas not
under a High Wind Watch will likely also experience strong winds,
albeit under 75 mph. These areas include Knik River Valley (Palmer
area), Turnagain Arm, and gaps and passes in the Kenai Mountains.

-Chen

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA/BERING SEA/ALEUTIANS
(Days 1 through 3: Tonight through Thursday evening)...

Key Points...

* A Winter Storm Warning is in effect for the Eastern Aleutians
  from 4 AM Tuesday through 1 AM Thursday. Expect snow and
  blowing snow with 8 to 20 inches of accumulation and gusts of 50
  to 65 mph.

* A Winter Weather Advisory is in effect for the southern AK
  Peninsula from 4 AM to 11 AM Tuesday. Expect snow and blowing
  snow with 2 to 6 inches of accumulation and wind gusts up to 45
  mph.

* A Winter Storm Watch is in effect from Tuesday evening through
  Wednesday evening for the Kuskokwim Delta Coast. 2 to 6 inches
  of snow is possible along with winds gusting as high as 45 mph
  and visibility as low as one quarter mile.

A weak shortwave lifting across the eastern Bering today will
give the Kuskokwim Delta a round of light snow showers this
afternoon and evening before it lifts northward into Western
Alaska. Elsewhere, plenty of low stratus covers the Bering and
Aleutian Chain. A second wave over the western Bering is dropping
south toward the central Aleutians.

While conditions are fairly quiet as of Monday afternoon,
attention quickly shifts to a powerful North Pacific low that will
send its front into the Eastern Aleutians and southern AKPEN by
early Tuesday morning and the rest of the AKPEN by late Tuesday
morning. The storm track looks to be dialed in at this point,
with Unalaska likely remaining on the western/cold side of the
storm. Therefore, they will maintain a northerly wind and cold air
with the storm. The southern AKPEN, while they will start out as
snow early Tuesday morning, will see a changeover to rain/snow mix
and eventually all rain Tuesday afternoon and evening. However, a
few inches of snow along with gusty easterly winds are likely
from King Cove west to False Pass before the warmer air arrives
and a changeover of precipitation occurs.

One other key detail, is that 12z and 18z guidance continues to
hint at a stronger system, with a deeper moisture fetch and
stronger winds on both sides of the low. Even with an increase in
the expected intensity of this system, the forecasted impacts look
on track.

Unalaska will likely bear the brunt of this storm due to being
within the best moisture axis and maintaining cold air with the
northerly winds, not to mention that the northerly winds will be
strong and gusty. Snow, blowing snow, and poor visibility are
looking more likely for Unalaska Tuesday morning through Thursday
morning with the heaviest snow falling Tuesday evening through
Wednesday evening. The tricky part of this forecast is that
guidance is showing that temperatures with this event will be
about 2 degrees warmer than that of the system a couple weeks
back. This ever-so-slightly warmer airmass could mean that
temperatures near sea level climb to between 33 and 35 degrees,
allowing for some rain to mix in at times. For higher elevations
around Unalaska, temperatures should remain cold enough for all
snow with blowing snow.

There also remains a little bit of uncertainty with regards to
Akutan and how much snow they might see. Due to being closer to
the storm track, warmer air could work in and change snow over to
rain/snow mix Tuesday evening which will cut into snow
accumulations. Heavy snow is still possible there, especially if
cold air hangs on longer. Nikolski looks to be cold enough for all
snow, but looks to be a little too far west and out of the best
moisture axis for heavy snow. With all that, have issued a Winter
Storm Watch for the Eastern Aleutians from early Tuesday morning
through early Thursday morning for the heavy snow threat, blowing
snow, reduced visibility, and strong northerly winds.

The front then makes it to mainland Southwest Alaska by Tuesday
afternoon. Precipitation looks to initially start out as snow
across Bristol Bay then quickly change to rain/snow mix and rain
Tuesday evening as warmer air works in from Kamishak Gap. Again,
guidance is trending stronger with this front, with more moisture
and stronger winds. There is growing likelihood of accumulating
snow and blowing snow into the Kuskokwim Delta Coast late Tuesday
into Wednesday. Warmer air looks to advance north into the
Kuskokwim Delta and Kuskokwim Valley by Wednesday afternoon and
evening which will change precipitation to rain/snow mix and rain
by then for most locations with the exception of the far
northwestern Kuskokwim Delta coast.

Showery and unsettled conditions continue into Thursday across
the southwestern mainland, AKPEN, and Eastern Aleutians.
Meanwhile, the next front approaches and moves over the western
Bering and Western Aleutians Wednesday night into Thursday
bringing rain to the area. Stay tuned for forecast updates as the
active pattern continues across the Eastern Aleutians and
southwestern mainland.

-TM/DAN

&&
.LONG TERM FORECAST (Days 4 through 7/Fri through Mon)...

Low pressure will push into the central Aleutians by midweek,
then move up into the AKPEN for Thursday and into the northern
Gulf by the end of the week. This low will bring a widespread mix
of rain and snow to southcentral for Friday and Saturday, becoming
more showery as the low moves east into the panhandle by Sunday.
Behind this system, high pressure will build north into the Gulf
on Sunday to help dry things out.

In the west, a Bering low will stall out in the central Bering
and begins to weaken as it remains nearly stationary through
Monday. This system will bring periods of rain and windy
conditions to the the Aleutians and coastal western Alaska, but
there remains some uncertainty as to whether this system will
remain strong or stay in place.

- Baker

&&

.AVIATION...

PANC...A weak Turnagain Arm wind is expected to move over the
Terminal around 6Z tonight. It will strengthen Tuesday afternoon
when a coastal ridge begins to build. Otherwise, expect VFR
conditions.

&&