Small Craft Advisory 748, NWS Anchorage, AK

787 
FZAK52 PAFC 222349
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
349 PM AKDT Wed Sep 22 2021

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.

PKZ199-231245-
349 PM AKDT Wed Sep 22 2021

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi Volcano 140 nm west of Adak is currently active.

A 989 mb low 365 nm south of Dutch Harbor merges with a low in the 
Gulf for Thu afternoon. High pressure over the Bering dissipates Fri 
morning. A 1006 mb North Pacific low and its front track south of 
the Aleutians through Fri afternoon. A 1014 mb low moves over Saint 
Matthew Island at 1001 mb by Fri afternoon.

$$

PKZ150-231245-
South of the AK Peninsula Sitkinak to Castle Cape-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...NE wind 15 kt in the evening increasing to 30 kt. 
Seas 11 ft. Rain.
.THU...N wind 30 kt. Seas 13 ft. Rain.
.THU NIGHT...NW wind 30 kt. Seas 13 ft.
.FRI...W wind 30 kt. Seas 11 ft.
.FRI NIGHT...NW wind 15 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...NW wind 25 kt. Seas 10 ft.
.MON...W wind 25 kt. Seas 11 ft.

$$

PKZ155-231245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...NE wind 15 kt in the evening increasing to 30 kt. 
Seas 11 ft.
.THU...NW wind 30 kt. Seas 12 ft.
.THU NIGHT...NW wind 25 kt becoming W 15 kt after midnight. From
the Shumagin Islands E, NW wind 30 kt. Seas 11 ft.
.FRI...W wind 20 kt. Seas 7 ft.
.FRI NIGHT...NE wind 15 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 9 ft.
.SUN...NW wind 25 kt. Seas 10 ft.
.MON...SW wind 20 kt. Seas 10 ft.

$$

PKZ160-231245-
Bristol Bay-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THURSDAY AND THURSDAY NIGHT...

.TONIGHT...N wind 10 kt in the evening increasing to 20 kt.
Seas 3 ft.
.THU...N wind 25 kt. Seas 6 ft.
.THU NIGHT...NW wind 30 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 7 ft.
.FRI NIGHT...N wind 10 kt. Seas 3 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...NW wind 20 kt. Seas 7 ft.
.MON...NE wind 20 kt. Seas 7 ft.

$$

PKZ165-231245-
Port Heiden to Cape Sarichef-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 20 kt in the evening increasing to 30 kt. 
Seas 11 ft. 
.THU...N wind 30 kt. Seas 11 ft.
.THU NIGHT...NW wind 20 kt. From Port Moller E, NW wind 30 kt
diminishing to 20 kt after midnight. Seas 10 ft.
.FRI...NW wind 15 kt. Seas 6 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SUN...NW wind 25 kt. Seas 9 ft.
.MON...S wind 15 kt. Seas 9 ft.

$$

PKZ170-231245-
Cape Sarichef to Nikolski Bering Side-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...N wind 30 kt. Seas 10 ft.
.THU...N wind 25 kt. Seas 10 ft.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.
.MON...S wind 25 kt. Seas 7 ft.

$$

PKZ171-231245-
Unalaska Bay-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...N wind 30 kt. Seas 9 ft.
.THU...N wind 25 kt becoming NW 15 kt in the afternoon. Seas 10 ft
subsiding to 5 ft in the afternoon.
.THU NIGHT...NW wind 10 kt in the evening becoming variable less
than 10 kt. Seas 3 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.FRI NIGHT...NW wind 10 kt. Seas 3 ft.
.SAT...W wind 15 kt. Seas 3 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 2 ft.

$$

PKZ172-231245-
Cape Sarichef to Nikolski Pacific Side-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 13 ft.
.THU...N wind 30 kt. Seas 11 ft.
.THU NIGHT...NW wind 15 kt. Seas 8 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.FRI NIGHT...N wind 15 kt. Seas 4 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 10 ft.
.MON...SW wind 30 kt. Seas 8 ft.

$$

PKZ173-231245-
Nikolski to Seguam Island Bering Side-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 25 kt. Seas 10 ft.
.THU...N wind 15 kt in the morning becoming variable 10 kt. Seas
7 ft.
.THU NIGHT...S wind 15 kt. Seas 7 ft.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 25 kt. Seas 5 ft.
.SAT...NW wind 25 kt. Seas 12 ft.
.SUN...SW wind 20 kt. Seas 10 ft.
.MON...SW wind 25 kt. Seas 8 ft.

$$

PKZ174-231245-
Nikolski to Seguam Island Pacific Side-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...N wind 30 kt. Seas 15 ft.
.THU...N wind 20 kt in the morning becoming variable 10 kt. Seas
10 ft.
.THU NIGHT...SW wind 15 kt. Seas 7 ft. Rain.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN...SW wind 25 kt. Seas 9 ft.
.MON...SW wind 30 kt. Seas 12 ft.

$$

PKZ175-231245-
Seguam Island to Adak Bering Side-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 20 kt. Seas 9 ft.
.THU...SW wind 15 kt. Seas 7 ft.
.THU NIGHT...SW wind 15 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SUN...S wind 20 kt. Seas 9 ft.
.MON...SW wind 30 kt. Seas 8 ft.

$$

PKZ176-231245-
Seguam Island to Adak Pacific Side-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...N wind 25 kt diminishing to 15 kt after midnight. Seas
12 ft.
.THU...SW wind 15 kt. Seas 8 ft.
.THU NIGHT...SW wind 15 kt. Seas 7 ft. Rain.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 7 ft.
.SAT...NW wind 20 kt. Seas 8 ft.
.SUN...S wind 25 kt. Seas 12 ft.
.MON...SW wind 30 kt. Seas 12 ft.

$$

PKZ177-231245-
Adak to Kiska-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 15 kt in the evening becoming variable 10 kt.
Seas 9 ft.
.THU...SW wind 15 kt. Seas 7 ft.
.THU NIGHT...SW wind 15 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SUN...SE wind 25 kt. Seas 10 ft.
.MON...SW wind 30 kt. Seas 10 ft.

$$

PKZ178-231245-
Kiska to Attu-
349 PM AKDT Wed Sep 22 2021

.TONIGHT...S wind 15 kt. Seas 7 ft.
.THU...W wind 15 kt. Seas 6 ft.
.THU NIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI AND FRI NIGHT...NW wind 15 kt. Seas 7 ft.
.SAT...SE wind 25 kt. Seas 6 ft.
.SUN...SE wind 30 kt. Seas 10 ft.
.MON...W wind 25 kt. Seas 9 ft.

$$

PKZ179-231245-
Pribilof Islands Near Shore Waters-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 25 kt. Seas 8 ft.
.THU...N wind 20 kt in the morning becoming variable 10 kt. Seas
7 ft.
.THU NIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI...S wind 15 kt. Seas 4 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.
.MON...SE wind 20 kt. Seas 6 ft.

$$

PKZ180-231245-
Kuskokwim Delta and Etolin Strait-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 8 ft.
.THU...N wind 30 kt. Seas 8 ft.
.THU NIGHT...NW wind 25 kt. Seas 7 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...E wind 15 kt. Seas 3 ft.
.SAT...NW wind 15 kt. Seas 6 ft.
.SUN...NW wind 20 kt. Seas 7 ft.
.MON...SE wind 20 kt. Seas 7 ft.

$$

PKZ181-231245-
North and West of Nunivak Island-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 25 kt. Seas 8 ft.
.THU...N wind 20 kt. Seas 6 ft.
.THU NIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...SW wind 20 kt. Seas 5 ft.
.FRI NIGHT...SE wind 20 kt. Seas 5 ft.
.SAT...SW wind 20 kt. Seas 7 ft.
.SUN...W wind 20 kt. Seas 6 ft.
.MON...SE wind 20 kt. Seas 6 ft.

$$

PKZ185-231245-
Saint Matthew Island Waters-
349 PM AKDT Wed Sep 22 2021

...SMALL CRAFT ADVISORY THURSDAY AND THURSDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 6 ft.
.THU...NW wind 15 kt E of Saint Matthew Island...SW 25 kt W of Saint
Matthew Island. Seas 4 ft.
.THU NIGHT...SW wind 25 kt. Seas 5 ft.
.FRI...W wind 25 kt. Seas 7 ft.
.FRI NIGHT...NW wind 30 kt. Seas 10 ft.
.SAT...NW wind 30 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 6 ft.
.MON...E wind 20 kt. Seas 7 ft.

$$

310 
FZAK52 PAFC 231139
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
339 AM AKDT Thu Sep 23 2021

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.

PKZ199-240100-
339 AM AKDT Thu Sep 23 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi Volcano 140 nm west of Adak is currently active.

High pressure over the Bering dissipates Fri morning. A 1002 mb 
North Pacific low and its front tracks south of the Aleutians 
through Fri afternoon. 

$$

PKZ150-240100-
South of the AK Peninsula Sitkinak to Castle Cape-
339 AM AKDT Thu Sep 23 2021

...GALE WARNING TONIGHT...

.TODAY...N wind 30 kt. Seas 12 ft. Rain.
.TONIGHT...NW wind 35 kt. Seas 12 ft.
.FRI...NW wind 30 kt becoming W 20 kt in the afternoon. Seas 11
ft.
.FRI NIGHT...W wind 15 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 4 ft.
.SUN...NW wind 25 kt. Seas 8 ft.
.MON...S wind 25 kt. Seas 9 ft.

$$

PKZ155-240100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 30 kt. Seas 11 ft.
.TONIGHT...NW wind 25 kt becoming W 15 kt after midnight. From the
Shumagin Islands E, NW wind 30 kt. Seas 11 ft.
.FRI...Variable wind 10 kt except W 20 kt from the Shumagin
Islands E. Seas 7 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON...SW wind 30 kt. Seas 10 ft.

$$

PKZ160-240100-
Bristol Bay-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 30 kt. Seas 6 ft.
.TONIGHT...NW wind 30 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 7 ft.
.FRI NIGHT...N wind 10 kt. Seas 3 ft.
.SAT...N wind 15 kt. Seas 2 ft.
.SUN...NW wind 20 kt. Seas 6 ft.
.MON...E wind 20 kt. Seas 4 ft.

$$

PKZ165-240100-
Port Heiden to Cape Sarichef-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt. Seas 10 ft.
.TONIGHT...NW wind 20 kt. From Port Moller E, NW wind 30 kt
diminishing to 20 kt after midnight. Seas 9 ft.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT...NW wind 20 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 10 ft.
.MON...S wind 25 kt. Seas 7 ft.

$$

PKZ170-240100-
Cape Sarichef to Nikolski Bering Side-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Seas 9 ft.
.TONIGHT...Variable wind 10 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 4 ft.
.FRI NIGHT...W wind 15 kt. Seas 3 ft.
.SAT...NW wind 25 kt. Seas 14 ft.
.SUN THROUGH MON...SW wind 30 kt. Seas 11 ft.

$$

PKZ171-240100-
Unalaska Bay-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt becoming NW 15 kt in the afternoon. Seas 7
ft.
.TONIGHT...W wind 10 kt in the evening becoming variable less than
10 kt. Seas 3 ft.
.FRI...Variable wind less than 10 kt. Seas 3 ft.
.FRI NIGHT...NW wind 10 kt. Seas 3 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 5 ft.

$$

PKZ172-240100-
Cape Sarichef to Nikolski Pacific Side-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt becoming NW 20 kt in the afternoon. Seas
11 ft.
.TONIGHT...W wind 15 kt. Seas 8 ft.
.FRI...Variable wind 10 kt. Seas 5 ft.
.FRI NIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...NW wind 30 kt. Seas 9 ft.
.SUN...SW wind 30 kt. Seas 9 ft.
.MON...SW wind 30 kt. Seas 13 ft.

$$

PKZ173-240100-
Nikolski to Seguam Island Bering Side-
339 AM AKDT Thu Sep 23 2021

.TODAY...N wind 15 kt in the morning becoming variable 10 kt. Seas
7 ft.
.TONIGHT...S wind 15 kt. Seas 6 ft.
.FRI...W wind 15 kt. Seas 4 ft.
.FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 12 ft.
.SUN...S wind 35 kt. Seas 10 ft.
.MON...SW wind 30 kt. Seas 12 ft.

$$

PKZ174-240100-
Nikolski to Seguam Island Pacific Side-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 15 kt. Seas 10 ft.
.TONIGHT...SW wind 15 kt. Seas 7 ft. Rain.
.FRI...W wind 15 kt. Seas 6 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...NW wind 30 kt. Seas 10 ft.
.SUN...S wind 35 kt. Seas 11 ft.
.MON...SW wind 35 kt. Seas 14 ft.

$$

PKZ175-240100-
Seguam Island to Adak Bering Side-
339 AM AKDT Thu Sep 23 2021

.TODAY...Variable wind 10 kt. Seas 6 ft.
.TONIGHT...SW wind 15 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN...S wind 30 kt. Seas 8 ft.
.MON...W wind 30 kt. Seas 11 ft.

$$

PKZ176-240100-
Seguam Island to Adak Pacific Side-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 15 kt. Seas 8 ft.
.TONIGHT...SW wind 15 kt. Seas 7 ft. Rain.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 10 ft.
.MON...W wind 35 kt. Seas 13 ft.

$$

PKZ177-240100-
Adak to Kiska-
339 AM AKDT Thu Sep 23 2021

.TODAY...SW wind 15 kt. Seas 7 ft.
.TONIGHT...SW wind 15 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...W wind 25 kt. Seas 7 ft.
.SUN...S wind 30 kt. Seas 10 ft.
.MON...W wind 30 kt. Seas 11 ft.

$$

PKZ178-240100-
Kiska to Attu-
339 AM AKDT Thu Sep 23 2021

.TODAY...Variable wind 10 kt. Seas 6 ft.
.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 6 ft.
.FRI NIGHT...NW wind 15 kt. Seas 7 ft.
.SAT...SE wind 25 kt. Seas 7 ft.
.SUN...SW wind 30 kt. Seas 9 ft.
.MON...W wind 30 kt. Seas 9 ft.

$$

PKZ179-240100-
Pribilof Islands Near Shore Waters-
339 AM AKDT Thu Sep 23 2021

.TODAY...N wind 20 kt in the morning becoming variable 10 kt. Seas
7 ft.
.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.FRI...S wind 15 kt. Seas 3 ft. Rain showers.
.FRI NIGHT...SW wind 15 kt. Seas 4 ft.
.SAT...NW wind 25 kt. Seas 12 ft.
.SUN...S wind 30 kt. Seas 7 ft.
.MON...E wind 30 kt. Seas 7 ft.

$$

PKZ180-240100-
Kuskokwim Delta and Etolin Strait-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt. Seas 7 ft.
.TONIGHT...NW wind 25 kt. Seas 7 ft.
.FRI...NW wind 15 kt diminishing to 10 kt in the afternoon. Seas
4 ft.
.FRI NIGHT...E wind 15 kt. Seas 2 ft.
.SAT...W wind 15 kt. Seas 6 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.MON...E wind 25 kt. Seas 5 ft.

$$

PKZ181-240100-
North and West of Nunivak Island-
339 AM AKDT Thu Sep 23 2021

.TODAY...N wind 20 kt. Seas 5 ft.
.TONIGHT...NW wind 15 kt. Seas 3 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.FRI NIGHT...S wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 6 ft.
.MON...E wind 20 kt. Seas 5 ft.

$$

PKZ185-240100-
Saint Matthew Island Waters-
339 AM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...NW wind 15 kt E of Saint Matthew Island... SW 25 kt W of
Saint Matthew Island. Seas 5 ft.
.TONIGHT...SW wind 25 kt. Seas 6 ft.
.FRI...E of Saint Matthew Island, S wind 20 kt. W of Saint Matthew
Island, NW wind 20 kt increasing to 30 kt in the afternoon. Seas
9 ft.
.FRI NIGHT...NW wind 25 kt. Seas 10 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...NE wind 20 kt. Seas 7 ft.

$$

573 
FZAK52 PAFC 232358
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
358 PM AKDT Thu Sep 23 2021

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.

PKZ199-241245-
358 PM AKDT Thu Sep 23 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi Volcano 140 nm west of Adak is currently active.

A 1002 mb low 295 nm south of Attu moves into the North Pacific 
south of Kodiak Island at 993 mb Sat afternoon. Its front remains 
south of the Aleutians through Sat afternoon. A 1002 mb low forms 60
nm southwest of St Matthew Island Fri afternoon and moves to 115 nm 
east of St Matthew Island at 1008 mb Sat afternoon. Its front moves 
over the Pribilofs Sat afternoon.

$$

PKZ150-241245-
South of the AK Peninsula Sitkinak to Castle Cape-
358 PM AKDT Thu Sep 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt. Seas 12 ft.
.FRI...NW wind 30 kt. Seas 10 ft.
.FRI NIGHT...W wind 20 kt diminishing to 10 kt after midnight. Seas 
6 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SAT NIGHT...N wind 20 kt. Seas 4 ft.
.SUN...NW wind 25 kt. Seas 8 ft.
.MON...S wind 25 kt. Seas 9 ft.
.TUE...NW wind 35 kt. Seas 12 ft.

$$

PKZ155-241245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 25 kt becoming W 15 kt after midnight. From the
Shumagin Islands E, NW wind 25 kt. Seas 11 ft.
.FRI...Variable wind 10 kt except W 20 kt from the Shumagin
Islands E. Seas 6 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...Variable wind 10 kt. Seas 3 ft.
.SAT NIGHT...NW wind 20 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 7 ft.
.MON...SW wind 30 kt. Seas 10 ft.
.TUE...NW wind 35 kt. Seas 11 ft.

$$

PKZ160-241245-
Bristol Bay-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 30 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 6 ft.
.FRI NIGHT...NW wind 10 kt. Seas 3 ft.
.SAT...NE wind 10 kt. Seas 1 foot.
.SAT NIGHT...NW wind 15 kt. Seas 3 ft.
.SUN...W wind 20 kt. Seas 6 ft.
.MON...E wind 20 kt. Seas 4 ft.
.TUE...N wind 25 kt. Seas 8 ft.

$$

PKZ165-241245-
Port Heiden to Cape Sarichef-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 30 kt diminishing to 20 kt after midnight. Seas
9 ft.
.FRI...W wind 15 kt becoming variable 10 kt in the afternoon. Seas 5
ft.
.FRI NIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT...Variable wind 10 kt. Seas 2 ft.
.SAT NIGHT...N wind 15 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 7 ft.
.MON...S wind 25 kt. Seas 7 ft.
.TUE...NW wind 35 kt. Seas 12 ft.

$$

PKZ170-241245-
Cape Sarichef to Nikolski Bering Side-
358 PM AKDT Thu Sep 23 2021

.TONIGHT...Variable wind 10 kt. Seas 6 ft.
.FRI...S wind 10 kt. Seas 4 ft.
.FRI NIGHT...SW wind 15 kt. Seas 3 ft. Rain showers.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 10 ft.
.SUN THROUGH MON...SW wind 30 kt. Seas 9 ft.
.TUE...NW wind 30 kt. Seas 10 ft.

$$

PKZ171-241245-
Unalaska Bay-
358 PM AKDT Thu Sep 23 2021

.TONIGHT...NW wind 10 kt in the evening becoming variable less than
10 kt. Seas 3 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SAT...W wind 25 kt. Seas 5 ft.
.SAT NIGHT...NW wind 20 kt. Seas 7 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 4 ft.
.TUE...NW wind 25 kt. Seas 4 ft.

$$

PKZ172-241245-
Cape Sarichef to Nikolski Pacific Side-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 15 kt. Seas 8 ft.
.FRI...S wind 10 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 4 ft.
.SAT AND SAT NIGHT...NW wind 30 kt. Seas 9 ft.
.SUN...SW wind 30 kt. Seas 9 ft.
.MON...SW wind 30 kt. Seas 13 ft.
.TUE...W wind 35 kt. Seas 11 ft.

$$

PKZ173-241245-
Nikolski to Seguam Island Bering Side-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...S wind 15 kt. Seas 6 ft. Rain.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...W wind 15 kt increasing to 25 kt after midnight. Seas
6 ft.
.SAT...NW wind 30 kt. Seas 12 ft.
.SAT NIGHT...NW wind 25 kt. Seas 13 ft.
.SUN...S wind 35 kt. Seas 9 ft.
.MON THROUGH TUE...W wind 30 kt. Seas 11 ft.

$$

PKZ174-241245-
Nikolski to Seguam Island Pacific Side-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...SW wind 15 kt. Seas 7 ft. Rain.
.FRI...W wind 15 kt. Seas 5 ft. Rain.
.FRI NIGHT...NW wind 15 kt becoming W 25 kt after midnight. Seas
5 ft.
.SAT...NW wind 30 kt. Seas 10 ft.
.SAT NIGHT...NW wind 25 kt. Seas 11 ft.
.SUN...S wind 35 kt. Seas 11 ft.
.MON THROUGH TUE...W wind 35 kt. Seas 14 ft.

$$

PKZ175-241245-
Seguam Island to Adak Bering Side-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...W wind 10 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 4 ft.
.FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 11 ft.
.SAT NIGHT...W wind 20 kt. Seas 11 ft.
.SUN...S wind 30 kt. Seas 8 ft.
.MON THROUGH TUE...W wind 30 kt. Seas 11 ft.

$$

PKZ176-241245-
Seguam Island to Adak Pacific Side-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...SW wind 15 kt. Seas 7 ft. Rain.
.FRI...NW wind 15 kt. Seas 5 ft.
.FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SAT NIGHT...W wind 20 kt. Seas 7 ft.
.SUN...S wind 30 kt. Seas 10 ft.
.MON...W wind 35 kt. Seas 13 ft.
.TUE...W wind 30 kt. Seas 11 ft.

$$

PKZ177-241245-
Adak to Kiska-
358 PM AKDT Thu Sep 23 2021

.TONIGHT...SW wind 15 kt. Seas 5 ft.
.FRI...NW wind 20 kt. Seas 5 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SAT NIGHT...SE wind 25 kt. Seas 7 ft.
.SUN...S wind 35 kt. Seas 10 ft.
.MON...W wind 30 kt. Seas 11 ft.
.TUE...W wind 25 kt. Seas 8 ft.

$$

PKZ178-241245-
Kiska to Attu-
358 PM AKDT Thu Sep 23 2021

.TONIGHT...NW wind 10 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 6 ft.
.FRI NIGHT...NW wind 15 kt becoming variable 10 kt after midnight. 
Seas 7 ft.
.SAT...SE wind 15 kt. Seas 6 ft.
.SAT NIGHT...SE wind 30 kt. Seas 9 ft.
.SUN THROUGH MON...W wind 30 kt. Seas 10 ft.
.TUE...SW wind 30 kt. Seas 9 ft.

$$

PKZ179-241245-
Pribilof Islands Near Shore Waters-
358 PM AKDT Thu Sep 23 2021

.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.FRI...S wind 15 kt. Seas 3 ft. Rain showers.
.FRI NIGHT...W wind 15 kt. Seas 3 ft. Rain showers.
.SAT AND SAT NIGHT...NW wind 20 kt. Seas 9 ft.
.SUN...S wind 30 kt. Seas 7 ft.
.MON...E wind 30 kt. Seas 7 ft.
.TUE...NW wind 25 kt. Seas 8 ft.

$$

PKZ180-241245-
Kuskokwim Delta and Etolin Strait-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 25 kt. Seas 7 ft.
.FRI...NW wind 15 kt becoming S in the afternoon. Seas 4 ft.
.FRI NIGHT...SE wind 15 kt. Seas 2 ft.
.SAT...SE wind 15 kt. Seas 3 ft.
.SAT NIGHT...NW wind 15 kt. Seas 4 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON...E wind 25 kt. Seas 5 ft.
.TUE...N wind 30 kt. Seas 10 ft.

$$

PKZ181-241245-
North and West of Nunivak Island-
358 PM AKDT Thu Sep 23 2021

.TONIGHT...NW wind 15 kt. Seas 3 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.FRI NIGHT...S wind 20 kt. Seas 5 ft.
.SAT...S wind 15 kt. Seas 5 ft.
.SAT NIGHT...W wind 15 kt. Seas 5 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...E wind 20 kt. Seas 5 ft.
.TUE...NW wind 25 kt. Seas 8 ft.

$$

PKZ185-241245-
Saint Matthew Island Waters-
358 PM AKDT Thu Sep 23 2021

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW wind 20 kt. Seas 5 ft. Rain showers.
.FRI...E of Saint Matthew Island, S wind 20 kt. W of Saint Matthew
Island, NW wind 20 kt increasing to 30 kt in the afternoon. Seas
9 ft.
.FRI NIGHT...S wind 20 kt E of Saint Matthew Island... NW 30 kt W
of Saint Matthew Island. Seas 11 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SAT NIGHT...W wind 15 kt. Seas 6 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...NE wind 20 kt. Seas 7 ft.
.TUE...NW wind 25 kt. Seas 8 ft.

$$

931 
FZAK52 PAFC 241104
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
304 AM AKDT Fri Sep 24 2021

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.

PKZ199-242345-
304 AM AKDT Fri Sep 24 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi Volcano 140 nm west of Adak is currently active.

A 1001 mb low 210 nm south of Adak moves across the North Pacific 
south of Kodiak Island at 989 mb Sat afternoon. A 1002 mb low forms 
100 nm southwest of St Matthew Island Fri afternoon and moves to 130 
nm East of St Matthew Island at 1006 mb Sat afternoon. 

$$

PKZ150-242345-
South of the AK Peninsula Sitkinak to Castle Cape-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 30 kt. Seas 11 ft.
.TONIGHT...W wind 20 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SAT NIGHT...N wind 20 kt. Seas 5 ft.
.SUN...NW wind 30 kt. Seas 7 ft.
.MON...S wind 25 kt. Seas 7 ft.
.TUE...NW wind 30 kt. Seas 11 ft.

$$

PKZ155-242345-
South of the AK Peninsula Castle Cape to Cape Sarichef-
304 AM AKDT Fri Sep 24 2021

.TODAY...W wind 20 kt in the morning becoming variable 10 kt. Seas
6 ft.
.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...Variable wind 10 kt. Seas 3 ft.
.SAT NIGHT...N wind 20 kt. Seas 6 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.MON...SW wind 25 kt. Seas 9 ft.
.TUE...NW wind 30 kt. Seas 11 ft.

$$

PKZ160-242345-
Bristol Bay-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 25 kt diminishing to 15 kt in the afternoon. Seas
6 ft.
.TONIGHT...NW wind 10 kt. Seas 3 ft.
.SAT...NE wind 10 kt becoming N in the afternoon. Seas 2 ft.
.SAT NIGHT...N wind 15 kt. Seas 3 ft.
.SUN...NW wind 20 kt. Seas 5 ft.
.MON...E wind 25 kt. Seas 5 ft.
.TUE...N wind 25 kt. Seas 6 ft.

$$

PKZ165-242345-
Port Heiden to Cape Sarichef-
304 AM AKDT Fri Sep 24 2021

.TODAY...W wind 15 kt. Seas 5 ft.
.TONIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT...Variable wind 10 kt. Seas 2 ft.
.SAT NIGHT...N wind 15 kt. Seas 5 ft.
.SUN...W wind 20 kt. Seas 6 ft.
.MON...E wind 25 kt. Seas 5 ft.
.TUE...NW wind 30 kt. Seas 9 ft.

$$

PKZ170-242345-
Cape Sarichef to Nikolski Bering Side-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...S wind 15 kt. Seas 4 ft.
.TONIGHT...SW wind 20 kt. Seas 3 ft.
.SAT...W wind 30 kt. Seas 9 ft.
.SAT NIGHT...NW wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...SW wind 40 kt. Seas 8 ft.
.TUE...NW wind 30 kt. Seas 10 ft.

$$

PKZ171-242345-
Unalaska Bay-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...Variable wind less than 10 kt. Seas 2 ft.
.TONIGHT...SE wind 10 kt. Seas 2 ft. Rain showers.
.SAT...Variable wind less than 10 kt becoming NW 25 kt in the
afternoon. Seas 2 ft building to 6 ft in the afternoon. Widespread
rain showers.
.SAT NIGHT...NW wind 30 kt. Seas 8 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 4 ft.
.TUE...NW wind 20 kt. Seas 3 ft.

$$

PKZ172-242345-
Cape Sarichef to Nikolski Pacific Side-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...Variable wind 10 kt. Seas 5 ft. Rain.
.TONIGHT...Variable wind 10 kt becoming SW 20 kt after midnight.
Seas 4 ft.
.SAT...W wind 30 kt. Seas 5 ft building to 9 ft in the afternoon.
.SAT NIGHT...NW wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...SW wind 40 kt. Seas 11 ft.
.TUE...NW wind 30 kt. Seas 12 ft.

$$

PKZ173-242345-
Nikolski to Seguam Island Bering Side-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY...

.TODAY...SW wind 20 kt in the morning becoming variable 10 kt.
Seas 5 ft. Rain showers.
.TONIGHT...W wind 25 kt. Seas 6 ft.
.SAT...NW wind 30 kt. Seas 11 ft.
.SAT NIGHT...NW wind 30 kt. Seas 12 ft.
.SUN...S wind 40 kt. Seas 9 ft.
.MON...W wind 35 kt. Seas 9 ft.
.TUE...W wind 30 kt. Seas 11 ft.

$$

PKZ174-242345-
Nikolski to Seguam Island Pacific Side-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY...

.TODAY...S wind 20 kt becoming N in the afternoon. Seas 5 ft.
Rain.
.TONIGHT...NW wind 15 kt becoming W 25 kt after midnight. Seas 6
ft.
.SAT...NW wind 30 kt. Seas 10 ft.
.SAT NIGHT...NW wind 30 kt. Seas 10 ft.
.SUN...S wind 40 kt. Seas 12 ft.
.MON...W wind 35 kt. Seas 14 ft.
.TUE...W wind 30 kt. Seas 13 ft.

$$

PKZ175-242345-
Seguam Island to Adak Bering Side-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY...

.TODAY...W wind 15 kt. Seas 4 ft.
.TONIGHT...W wind 25 kt. Seas 7 ft. Rain showers.
.SAT...NW wind 25 kt. Seas 9 ft.
.SAT NIGHT...NW wind 20 kt. Seas 10 ft.
.SUN...S wind 40 kt. Seas 10 ft.
.MON...W wind 30 kt. Seas 9 ft.
.TUE...W wind 25 kt. Seas 9 ft.

$$

PKZ176-242345-
Seguam Island to Adak Pacific Side-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY...

.TODAY...W wind 15 kt. Seas 5 ft. Rain.
.TONIGHT...NW wind 25 kt. Seas 8 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SAT NIGHT...NW wind 20 kt. Seas 7 ft.
.SUN...S wind 40 kt. Seas 10 ft.
.MON...W wind 35 kt. Seas 15 ft.
.TUE...W wind 30 kt. Seas 11 ft.

$$

PKZ177-242345-
Adak to Kiska-
304 AM AKDT Fri Sep 24 2021

.TODAY...NW wind 20 kt. Seas 5 ft.
.TONIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SAT NIGHT...SE wind 25 kt. Seas 7 ft.
.SUN...S wind 40 kt. Seas 11 ft.
.MON...W wind 35 kt. Seas 12 ft.
.TUE...SW wind 25 kt. Seas 8 ft.

$$

PKZ178-242345-
Kiska to Attu-
304 AM AKDT Fri Sep 24 2021

.TODAY...NW wind 20 kt. Seas 6 ft.
.TONIGHT...NW wind 15 kt. Seas 7 ft.
.SAT...Variable wind 10 kt becoming SE 20 kt in the afternoon.
Seas 6 ft.
.SAT NIGHT...SE wind 35 kt. Seas 9 ft.
.SUN...SW wind 40 kt. Seas 11 ft.
.MON...W wind 30 kt. Seas 11 ft.
.TUE...SW wind 30 kt. Seas 8 ft.

$$

PKZ179-242345-
Pribilof Islands Near Shore Waters-
304 AM AKDT Fri Sep 24 2021

.TODAY...S wind 20 kt. Seas 4 ft.
.TONIGHT...S wind 20 kt. Seas 4 ft. Widespread rain showers.
.SAT...NW wind 20 kt. Seas 7 ft. Rain showers.
.SAT NIGHT...NW wind 15 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 6 ft.
.MON...NE wind 25 kt. Seas 8 ft.
.TUE...W wind 25 kt. Seas 8 ft.

$$

PKZ180-242345-
Kuskokwim Delta and Etolin Strait-
304 AM AKDT Fri Sep 24 2021

.TODAY...NW wind 15 kt. Seas 4 ft.
.TONIGHT...E wind 15 kt. Seas 2 ft.
.SAT...E wind 10 kt. Seas 2 ft.
.SAT NIGHT...NW wind 15 kt. Seas 3 ft.
.SUN...W wind 20 kt. Seas 4 ft.
.MON...E wind 25 kt. Seas 6 ft.
.TUE...NW wind 25 kt. Seas 7 ft.

$$

PKZ181-242345-
North and West of Nunivak Island-
304 AM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...SW wind 20 kt. Seas 5 ft.
.TONIGHT...S wind 25 kt. Seas 6 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SAT NIGHT...W wind 15 kt. Seas 4 ft.
.SUN...W wind 15 kt. Seas 4 ft.
.MON...NE wind 25 kt. Seas 5 ft.
.TUE...NW wind 25 kt. Seas 8 ft.

$$

PKZ185-242345-
Saint Matthew Island Waters-
304 AM AKDT Fri Sep 24 2021

...GALE WARNING TONIGHT...

.TODAY...W wind 30 kt. Seas 8 ft.
.TONIGHT...S wind 25 kt E of Saint Matthew Island...N 35 kt W of
Saint Matthew Island. Seas 12 ft.
.SAT...S wind 15 kt E of Saint Matthew Island...N 30 kt W of Saint
Matthew Island. Seas 12 ft.
.SAT NIGHT...W wind 20 kt. Seas 7 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...NE wind 20 kt. Seas 6 ft.
.TUE...W wind 25 kt. Seas 8 ft.

$$

179 
FZAK52 PAFC 242338
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
338 PM AKDT Fri Sep 24 2021

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.

PKZ199-251230-
338 PM AKDT Fri Sep 24 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1000 mb low 120 nm north of St Matthew Island moves to 170 nm 
north of St Paul at 1008 mb Sat afternoon and then dissipates Sun 
morning. Its front crosses the Bering and Eastern Aleutians through 
Sat evening. A North Pacific low moves to 50 nm north of Shemya at 
992 mb by Sun afternoon.

$$

PKZ150-251230-
South of the AK Peninsula Sitkinak to Castle Cape-
338 PM AKDT Fri Sep 24 2021

.TONIGHT...NW wind 15 kt. Seas 6 ft.
.SAT...N wind 10 kt. Seas 4 ft.
.SAT NIGHT...N wind 20 kt. Seas 5 ft.
.SUN AND SUN NIGHT...NW wind 25 kt. Seas 7 ft.
.MON...S wind 25 kt. Seas 7 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 12 ft.

$$

PKZ155-251230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
338 PM AKDT Fri Sep 24 2021

.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...Variable wind 10 kt. Seas 3 ft.
.SAT NIGHT...N wind 20 kt. Seas 6 ft.
.SUN...NW wind 25 kt. Seas 7 ft.
.SUN NIGHT...SW wind 25 kt. Seas 6 ft.
.MON...SW wind 30 kt. Seas 9 ft.
.TUE THROUGH WED...W wind 30 kt. Seas 11 ft.

$$

PKZ160-251230-
Bristol Bay-
338 PM AKDT Fri Sep 24 2021

.TONIGHT...NW wind 10 kt becoming variable after midnight. Seas 3 
ft.
.SAT...NE wind 10 kt. Seas 2 ft.
.SAT NIGHT...N wind 15 kt. Seas 3 ft.
.SUN...NW wind 15 kt. Seas 3 ft.
.SUN NIGHT...W wind 20 kt. Seas 4 ft.
.MON...E wind 25 kt. Seas 5 ft.
.TUE...N wind 25 kt. Seas 6 ft.
.WED...W wind 25 kt. Seas 7 ft.

$$

PKZ165-251230-
Port Heiden to Cape Sarichef-
338 PM AKDT Fri Sep 24 2021

.TONIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT...Variable wind 10 kt. Seas 2 ft.
.SAT NIGHT...N wind 15 kt. Seas 6 ft.
.SUN...NW wind 15 kt. Seas 6 ft.
.SUN NIGHT...SW wind 20 kt. Seas 5 ft.
.MON...SE wind 25 kt. Seas 5 ft.
.TUE...NW wind 30 kt. Seas 9 ft.
.WED...W wind 30 kt. Seas 13 ft.

$$

PKZ170-251230-
Cape Sarichef to Nikolski Bering Side-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY AND SATURDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming SW 20 kt after midnight.
Seas 3 ft.
.SAT...NW wind 30 kt. Seas 9 ft.
.SAT NIGHT...NW wind 30 kt diminishing to 20 kt after midnight.
Seas 11 ft.
.SUN...W wind 15 kt. Seas 9 ft.
.SUN NIGHT...S wind 30 kt. Seas 8 ft.
.MON...SW wind 30 kt. Seas 9 ft.
.TUE...NW wind 30 kt. Seas 10 ft.
.WED...W wind 30 kt. Seas 14 ft.

$$

PKZ171-251230-
Unalaska Bay-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY AND SATURDAY NIGHT...

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft. Rain showers.
.SAT...W wind 10 kt becoming NW 25 kt in the afternoon. Seas 2 ft
building to 8 ft in the afternoon.
.SAT NIGHT...NW wind 25 kt diminishing to 15 kt after midnight. Seas
9 ft subsiding to 5 ft after midnight.
.SUN...W wind 15 kt. Seas 3 ft.
.SUN NIGHT...SE wind 25 kt. Seas 4 ft.
.MON...SW wind 20 kt. Seas 2 ft.
.TUE...NW wind 20 kt. Seas 3 ft.
.WED...W wind 25 kt. Seas 3 ft.

$$

PKZ172-251230-
Cape Sarichef to Nikolski Pacific Side-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY AND SATURDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming W 20 kt after midnight.
Seas 4 ft.
.SAT...NW wind 30 kt. Seas 8 ft.
.SAT NIGHT...NW wind 30 kt. Seas 10 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.SUN NIGHT...S wind 35 kt. Seas 10 ft.
.MON...SW wind 30 kt. Seas 13 ft.
.TUE THROUGH WED...W wind 30 kt. Seas 11 ft.

$$

PKZ173-251230-
Nikolski to Seguam Island Bering Side-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 15 kt increasing to 25 kt after midnight. Seas 6 
ft. Rain showers.
.SAT...NW wind 30 kt. Seas 10 ft.
.SAT NIGHT...NW wind 30 kt diminishing to 20 kt after midnight.
Seas 11 ft.
.SUN...S wind 25 kt. Seas 9 ft.
.SUN NIGHT...S wind 35 kt. Seas 10 ft.
.MON THROUGH WED...SW wind 30 kt. Seas 11 ft.

$$

PKZ174-251230-
Nikolski to Seguam Island Pacific Side-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 15 kt becoming W 25 kt after midnight. Seas 6
ft.
.SAT...NW wind 30 kt. Seas 9 ft.
.SAT NIGHT...NW wind 30 kt. Seas 9 ft.
.SUN...SW wind 25 kt. Seas 8 ft.
.SUN NIGHT...S wind 40 kt. Seas 12 ft.
.MON...W wind 40 kt. Seas 17 ft.
.TUE THROUGH WED...SW wind 30 kt. Seas 12 ft.

$$

PKZ175-251230-
Seguam Island to Adak Bering Side-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SAT NIGHT...NW wind 20 kt in the evening becoming variable 10 kt.
Seas 9 ft.
.SUN...SE wind 35 kt. Seas 9 ft.
.SUN NIGHT...SW wind 35 kt. Seas 10 ft.
.MON...W wind 35 kt. Seas 9 ft.
.TUE...W wind 25 kt. Seas 9 ft.
.WED...SW wind 30 kt. Seas 9 ft.

$$

PKZ176-251230-
Seguam Island to Adak Pacific Side-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TONIGHT...NW wind 15 kt increasing to 25 kt after midnight. Seas 8 
ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SAT NIGHT...NW wind 20 kt becoming SE after midnight. Seas 7 ft.
.SUN...SE wind 35 kt. Seas 10 ft.
.SUN NIGHT...SW wind 40 kt. Seas 11 ft.
.MON...W wind 40 kt. Seas 20 ft.
.TUE THROUGH WED...SW wind 30 kt. Seas 10 ft.

$$

PKZ177-251230-
Adak to Kiska-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 15 kt becoming variable 10 kt by afternoon. Seas 7 
ft.
.SAT NIGHT...SE wind 15 kt increasing to 30 kt after midnight.
Seas 7 ft.
.SUN...SE wind 35 kt. Seas 10 ft.
.SUN NIGHT...SW wind 35 kt. Seas 13 ft.
.MON...W wind 40 kt. Seas 18 ft.
.TUE...SW wind 25 kt. Seas 8 ft.
.WED...SW wind 30 kt. Seas 8 ft.

$$

PKZ178-251230-
Kiska to Attu-
338 PM AKDT Fri Sep 24 2021

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...NW wind 20 kt in the evening becoming variable 10 kt.
Seas 7 ft.
.SAT...Variable wind 10 kt becoming SE 20 kt in the afternoon.
Seas 6 ft.
.SAT NIGHT...SE wind 25 kt increasing to 35 kt after midnight.
Seas 9 ft. Rain.
.SUN...S wind 35 kt. Seas 11 ft.
.SUN NIGHT...W wind 35 kt. Seas 13 ft.
.MON...NW wind 35 kt. Seas 12 ft.
.TUE THROUGH WED...SW wind 30 kt. Seas 9 ft.

$$

PKZ179-251230-
Pribilof Islands Near Shore Waters-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY SATURDAY AND SATURDAY NIGHT...

.TONIGHT...S wind 20 kt becoming NW after midnight. Seas 4 ft. Rain.
.SAT...NW wind 20 kt. Seas 8 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 15 kt. Seas 7 ft.
.SUN NIGHT...SE wind 35 kt. Seas 9 ft.
.MON...E wind 35 kt. Seas 10 ft.
.TUE...W wind 25 kt. Seas 8 ft.
.WED...SW wind 30 kt. Seas 13 ft.

$$

PKZ180-251230-
Kuskokwim Delta and Etolin Strait-
338 PM AKDT Fri Sep 24 2021

.TONIGHT...SE wind 15 kt. Seas 3 ft.
.SAT...E wind 15 kt becoming NE in the afternoon. Seas 3 ft.
.SAT NIGHT...NW wind 15 kt. Seas 4 ft.
.SUN...W wind 20 kt. Seas 4 ft.
.SUN NIGHT...W wind 15 kt. Seas 4 ft.
.MON...E wind 25 kt. Seas 6 ft.
.TUE...NW wind 25 kt. Seas 7 ft.
.WED...W wind 25 kt. Seas 12 ft.

$$

PKZ181-251230-
North and West of Nunivak Island-
338 PM AKDT Fri Sep 24 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 25 kt. Seas 6 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SAT NIGHT...SW wind 15 kt. Seas 4 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.SUN NIGHT...SW wind 15 kt. Seas 4 ft.
.MON...E wind 25 kt. Seas 5 ft.
.TUE...NW wind 25 kt. Seas 8 ft.
.WED...SW wind 25 kt. Seas 8 ft.

$$

PKZ185-251230-
Saint Matthew Island Waters-
338 PM AKDT Fri Sep 24 2021

...GALE WARNING TONIGHT...

.TONIGHT...S wind 20 kt E of Saint Matthew Island...NW 35 kt W of
Saint Matthew Island. Seas 12 ft.
.SAT...S wind 15 kt E of Saint Matthew Island...N 30 kt W of Saint
Matthew Island. Seas 11 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...W wind 15 kt. Seas 5 ft.
.SUN NIGHT...S wind 15 kt. Seas 4 ft.
.MON...NE wind 25 kt. Seas 7 ft.
.TUE...W wind 25 kt. Seas 8 ft.
.WED...SW wind 30 kt. Seas 11 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
513 PM AKDT Tue Sep 21 2021

.ANALYSIS AND UPPER LEVELS...

A negatively tilted upper-level trough continues to dig south
across the state to the Gulf. Within the trough is an upper-level
low situated over the Kenai Peninsula with the support of a 85 kt
jet streak which is helping drive cold arctic air to the
Southcentral coast this afternoon. A weak trough at 700 mb
(~10,000ft), coupled with the cold arctic air in the lower levels
being driven south and moisture advecting from the east, all came
together to produce an area of light snow this morning across
east Anchorage, the Anchorage hillside, and the Matanuska Valley.
Snow has since tapered off in these locations due to drier air
moving into the area and the mid-level trough exiting to the east.
Snow continues to fall across the Copper River Basin due to a
moist southeasterly flow aloft overrunning the colder at the
surface. Radar is also showing rain over Prince William Sound,
enhanced by weak waves lifting north ahead of the main trough.
Cold air advection and increasing pressure gradients are causing
winds to ramp up throughout Southcentral this afternoon. Some
areas are reporting gusts as high as 45 mph.

A ridge continues to build upstream of the negatively tilted
trough with breaks in cloud cover over Southwest Alaska.
Satellite shows a blanket of low stratus over much of the Bering
and Aleutians as the ridge progresses east. Calmer winds are being
observed along the eastern Bering and Aleutians as the ridge
continues to influence the area. Farther west, easterly winds have
developed across the western half of the Chain as front
associated with a North Pacific low lifts north.

&&

.MODEL DISCUSSION...

Models are in good overall synoptic agreement through the short-
term. Model spread begins to grow on day 3 as the models struggle
with the placement, timing, and strength of a low that spins up in
the Gulf late Wednesday into Thursday. The NAM has the low
digging farther south and weaker compared to the other solutions
(GFS/GEM/EC). The GFS and EC are advertising similar solutions,
whereas the Canadian seems to be a hybrid of the GFS and NAM. As a
result, forecast challenges will be the placement of winds and
precipitation in regards to this system. Another challenge will be
timing the erosion of the cold air that has been drawn south from
the digging trough currently over the domain on Thursday and the
potential for colder air to return by Friday morning. This will
effect precipitation type for the short and long-term forecasts.
Thus, forecast confidence beyond day 2 is below normal.

&&

.AVIATION...

PANC...VFR conditions will persist with gusty conditions.
Winds will begin to tapper off this evening around 9z.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3: Today
through Friday afternoon)...

Snow will gradually taper off across the Copper River Basin
through this evening as a low in the Gulf departs eastward. Gusty
northerly outflow winds will likewise gradually diminish through
the evening as the pressure gradient weakens. Quiet conditions are
expected Wednesday, with partial clearing, though temperatures
will remain generally cooler with highs only reaching the mid 40s
over Southcentral. A North Pacific low will enter the Gulf early
Thursday morning. There is still significant model disagreement
on its position and timing. However, potential impacts include
similar gusty northerly outflow winds as occurred today, as well
as accumulating snow across Southcentral and the Copper River
Basin. This would most likely all occur overnight Thursday into
Friday morning.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3)...

An active low NNW of Nunivak Island remains on track, which will
bring Southwest's first sequence of snow. Highest amounts of 4 to
7 inches primarily between Aniak and Sleetmute tonight into
Wednesday morning. Cold air advection accompanying the low and its
frontal system will race across Southwest AK through at least
Friday morning, causing overnight temperatures to fall in the
lower 20s to lower 30s and day time temperatures in the lower 30s
to lower 40s through the short term. Models materializes another
trough over the northern Bering that could potentially move closer
to Southwest Coast by Thursday night. For now, will monitor this
situation closely and see what happens as future models become
available.

An extensive area of moisture from a Pacific low will move across
the Alaska Peninsula starting Wednesday afternoon and could stick
around through Friday morning.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3)...

Associated gales from a strong North Pacific low will pass through
most areas of the Aleutian Chain with much stronger gusts along
the gaps and passes through the next few days. A developing trough
east of Kamchatka Peninsula will transit through the central
Bering bringing very minimal moisture near Pribilof Islands by
Friday morning. Meanwhile, a Northwest Pacific low passes well
south of the western Aleutians starting Thursday afternoon. This
will bring slightly enough moisture across the Aleutians leading
to light rain between Thursday and Friday.

&&

.MARINE (Days 3 through 5: Friday through Sunday)...

Gulf of Alaska....A low over the North Gulf Coast on Friday
remains nearly stationary as it weakens, dissipating Saturday.
Predominantly westerly high end gales in the Gulf, with areas of
storm force winds between Kodiak Island and the Kenai Peninsula,
diminishing into Saturday. Seas to 21 ft in the Gulf, subsiding
Saturday.

Bering Sea....A weak Bering Sea low on Friday tracks south over
the Aleutian Islands through Saturday. This low spreads northerly
winds less than gale force across the southern Bering and
Aleutians, diminishing into Sunday morning.

&&

.LONG TERM FORECAST (Days 4 through 7: Saturday through Tuesday)...

Models begin in generally good agreement near the start of the
period on Saturday, with a longwave trough with several embedded
shortwaves initially centered over much of the mainland and
eastern Bering. A low will likely be filling in near or just south
of Prince William Sound around this time, with any mixed
precipitation and upper elevation snow quickly coming to an end on
Saturday morning across the western Kenai Peninsula and Chugach
Mountains with the weakening circulation pulling away from the
Gulf coast. Meanwhile, a shortwave trough and surface low will
most likely be dropping south around the western periphery of the
longwave over the eastern Bering and Aleutians from Saturday to
Sunday, bringing small craft to perhaps locally gale force winds
and rain for a brief period as it dives south.

The pattern from Sunday onwards then becomes significantly
murkier, with operational models diverging with even most larger
scale features through the start of next week. Even with the
details for individual synoptic systems less clear, there is a
fairly good signal that the Pacific jet and prevailing storm
track will stay relatively far south from this weekend through
early next week. Global models and their respective ensemble
suites have shifted the track of a North Pacific low farther south
compared to previous cycles, now taking the center well south of
both the Aleutians and Gulf as it tracks east near the base of the
longwave trough axis between late Saturday and Monday. This
should keep conditions much less active over the southern mainland,
albeit still chilly by late September standards, with abnormally
cool low level temperatures likely to remain parked over much of
the state through nearly the entire extended period. Another low
could track across parts of the Bering between Monday and Tuesday,
although any details by this point are far from being resolved.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Weather Advisory 141 152.
MARINE...Gale 119 120 130 131 150 172 174 176.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...TM
SOUTHCENTRAL ALASKA...AP
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...CB
MARINE/LONG TERM...AS