Small Craft Advisory 846, NWS Anchorage, AK

207 
FZAK52 PAFC 251138
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
338 AM AKDT Mon Oct 25 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.

PKZ199-260100-
338 AM AKDT Mon Oct 25 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi volcano, located 140 nm west of Adak, is currently 
active.

A 976 mb low near 52N 161W moves to 53N 153W at 974 mb Tuesday 
afternoon. Tuesday morning a 996 mb low develops and moves to 60N 
172W at 991 mb Wednesday morning.


$$

PKZ150-260100-
South of the AK Peninsula Sitkinak to Castle Cape-
338 AM AKDT Mon Oct 25 2021

...GALE WARNING TONIGHT AND TUESDAY...

.TODAY...NE wind 15 kt becoming N 25 kt in the afternoon. Seas 6 ft.
.TONIGHT...NW wind 35 kt. Seas 15 ft.
.TUE...NW wind 40 kt. Seas 14 ft.
.TUE NIGHT...NW wind 35 kt. Seas 12 ft.
.WED...SW wind 30 kt. Seas 11 ft.
.THU...W wind 25 kt. Seas 13 ft.
.FRI...E wind 30 kt. Seas 15 ft.

$$

PKZ155-260100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...E wind 30 kt N in the morning becoming N. Seas 18 ft. From 
the Shumagin Islands E, E wind 20 kt becoming N 25 kt in the 
afternoon. Seas 7 ft building to 14 ft in the afternoon.
.TONIGHT...N wind 30 kt. Seas 16 ft.
.TUE...NW wind 30 kt. Seas 12 ft.
.TUE NIGHT...W wind 30 kt. Seas 10 ft.
.WED THROUGH THU...W wind 30 kt. Seas 15 ft.
.FRI...N wind 45 kt. Seas 15 ft.

$$

PKZ160-260100-
Bristol Bay-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 25 kt. Seas 5 ft.
.TONIGHT...N wind 25 kt. Seas 7 ft.
.TUE...NW wind 25 kt. Seas 7 ft.
.TUE NIGHT...W wind 20 kt. Seas 6 ft.
.WED...SW wind 25 kt. Seas 7 ft.
.THU...NW wind 15 kt. Seas 7 ft.
.FRI...N wind 30 kt. Seas 9 ft.

$$

PKZ165-260100-
Port Heiden to Cape Sarichef-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 30 kt. Seas 9 ft.
.TONIGHT...N wind 30 kt. Seas 11 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.TUE NIGHT...SW wind 30 kt. Seas 9 ft.
.WED...W wind 30 kt. Seas 18 ft.
.THU...NW wind 25 kt. Seas 18 ft.
.FRI...N wind 35 kt. Seas 14 ft.

$$

PKZ170-260100-
Cape Sarichef to Nikolski Bering Side-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 30 kt. Seas 11 ft.
.TONIGHT...NW wind 30 kt. Seas 11 ft.
.TUE...W wind 30 kt. Seas 10 ft.
.TUE NIGHT...SW wind 30 kt. Seas 10 ft.
.WED...W wind 40 kt. Seas 18 ft.
.THU...NW wind 30 kt. Seas 18 ft.
.FRI...N wind 30 kt. Seas 13 ft.

$$

PKZ171-260100-
Unalaska Bay-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 30 kt. Seas 10 ft. Rain showers.
.TONIGHT...NW wind 30 kt. Seas 11 ft.
.TUE...W wind 25 kt. Seas 4 ft.
.TUE NIGHT...SW wind 25 kt. Seas 4 ft.
.WED...W wind 35 kt. Seas 10 ft.
.THU...N wind 20 kt. Seas 7 ft.
.FRI...N wind 25 kt. Seas 10 ft.

$$

PKZ172-260100-
Cape Sarichef to Nikolski Pacific Side-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 30 kt. Seas 20 ft.
.TONIGHT...NW wind 30 kt. Seas 13 ft.
.TUE...NW wind 30 kt. Seas 9 ft.
.TUE NIGHT...SW wind 30 kt. Seas 10 ft.
.WED...W wind 35 kt. Seas 12 ft.
.THU...N wind 35 kt. Seas 11 ft.
.FRI...N wind 40 kt. Seas 14 ft.

$$

PKZ173-260100-
Nikolski to Seguam Island Bering Side-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 25 kt. Seas 12 ft.
.TONIGHT...NW wind 20 kt. Seas 9 ft.
.TUE...W wind 30 kt. Seas 8 ft.
.TUE NIGHT...W wind 30 kt. Seas 10 ft.
.WED...W wind 35 kt. Seas 14 ft.
.THU...N wind 30 kt. Seas 13 ft.
.FRI...NW wind 30 kt. Seas 12 ft.

$$

PKZ174-260100-
Nikolski to Seguam Island Pacific Side-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...NW wind 30 kt. Seas 18 ft.
.TONIGHT...NW wind 25 kt. Seas 11 ft.
.TUE...W wind 25 kt. Seas 8 ft.
.TUE NIGHT...W wind 30 kt. Seas 12 ft.
.WED...W wind 30 kt. Seas 13 ft.
.THU...N wind 35 kt. Seas 16 ft.
.FRI...NW wind 35 kt. Seas 17 ft.

$$

PKZ175-260100-
Seguam Island to Adak Bering Side-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY TODAY AND TUESDAY...

.TODAY...N wind 20 kt. Seas 9 ft.
.TONIGHT...W wind 20 kt. Seas 6 ft.
.TUE...W wind 30 kt. Seas 8 ft.
.TUE NIGHT...W wind 35 kt. Seas 11 ft.
.WED...NW wind 30 kt. Seas 12 ft.
.THU...N wind 30 kt. Seas 13 ft.
.FRI...W wind 25 kt. Seas 12 ft.

$$

PKZ176-260100-
Seguam Island to Adak Pacific Side-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...NW wind 20 kt. Seas 14 ft.
.TONIGHT...NW wind 15 kt. Seas 8 ft.
.TUE...W wind 25 kt. Seas 8 ft.
.TUE NIGHT...W wind 35 kt. Seas 12 ft.
.WED...NW wind 30 kt. Seas 12 ft.
.THU...N wind 35 kt. Seas 17 ft.
.FRI...NW wind 35 kt. Seas 17 ft.

$$

PKZ177-260100-
Adak to Kiska-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...NW wind 15 kt. Seas 10 ft.
.TONIGHT...W wind 15 kt increasing to 25 kt after midnight. Seas 7 
ft.
.TUE...W wind 30 kt. Seas 10 ft.
.TUE NIGHT...W wind 30 kt. Seas 11 ft.
.WED...NW wind 25 kt. Seas 11 ft.
.THU...N wind 30 kt. Seas 16 ft.
.FRI...SW wind 20 kt. Seas 14 ft.

$$

PKZ178-260100-
Kiska to Attu-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...NW wind 20 kt. Seas 9 ft.
.TONIGHT...W wind 25 kt. Seas 8 ft.
.TUE...W wind 30 kt. Seas 11 ft.
.TUE NIGHT...W wind 30 kt. Seas 12 ft.
.WED...NE wind 25 kt. Seas 11 ft.
.THU...NW wind 25 kt. Seas 15 ft.
.FRI...S wind 25 kt. Seas 11 ft.

$$

PKZ179-260100-
Pribilof Islands Near Shore Waters-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 25 kt. Seas 8 ft.
.TONIGHT...NW wind 25 kt. Seas 8 ft.
.TUE...W wind 30 kt. Seas 9 ft.
.TUE NIGHT...W wind 30 kt. Seas 10 ft.
.WED...NW wind 45 kt. Seas 19 ft.
.THU...NW wind 25 kt. Seas 12 ft.
.FRI...NW wind 20 kt. Seas 8 ft.

$$

PKZ180-260100-
Kuskokwim Delta and Etolin Strait-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 25 kt. Seas 7 ft.
.TONIGHT...NW wind 30 kt. Seas 8 ft.
.TUE...NW wind 25 kt. Seas 7 ft.
.TUE NIGHT...SW wind 25 kt. Seas 7 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.THU...NW wind 20 kt. Seas 9 ft.
.FRI...N wind 30 kt. Seas 10 ft.

$$

PKZ181-260100-
North and West of Nunivak Island-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 25 kt. Seas 7 ft.
.TONIGHT...NW wind 25 kt. Seas 7 ft.
.TUE...W wind 20 kt. Seas 7 ft.
.TUE NIGHT...SE wind 20 kt. Seas 6 ft.
.WED THROUGH FRI...NW wind 25 kt. Seas 9 ft.

$$

PKZ185-260100-
Saint Matthew Island Waters-
338 AM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...W wind 25 kt. Seas 7 ft. Freezing spray.
.TONIGHT...W wind 25 kt. Seas 8 ft.
.TUE...E of Saint Matthew Island, W wind 25 kt becoming SW 15 kt
in the afternoon. W of Saint Matthew Island, W wind 25 kt. Seas 8 
ft.
.TUE NIGHT...N wind 30 kt. Seas 12 ft.
.WED...NW wind 30 kt. Seas 12 ft.
.THU...NW wind 25 kt. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 6 ft.

$$

106 
FZAK52 PAFC 252356
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
356 PM AKDT Mon Oct 25 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.

PKZ199-261300-
356 PM AKDT Mon Oct 25 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi volcano, located 140 nm west of Adak, is currently 
active.

A 1000 mb Siberian low will move to Bristol Bay at 990 mb Wednesday 
afternoon. A North Pacific Low at 989 mb low 450 nm southwest of 
Shemya Wednesday morning will move to 400 nm southwest of Adak at 983
mb Wednesday afternoon.

$$

PKZ150-261300-
South of the AK Peninsula Sitkinak to Castle Cape-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...NW wind increasing to 35 kt. Gusts up to 50 kts out of 
bays and passes. Seas 15 ft.
.TUE...NW wind 35 kt. Gusts to 50 kts out of bays and passes. Seas 
14 ft.
.TUE NIGHT...NW wind 35 kt. Seas 12 ft.
.WED...SW wind 30 kt. Seas 11 ft.
.WED NIGHT...SW wind 25 kt. Seas 11 ft.
.THU...W wind 25 kt. Seas 12 ft.
.FRI THROUGH SAT...E wind 30 kt. Seas 15 ft.

$$

PKZ155-261300-
South of the AK Peninsula Castle Cape to Cape Sarichef-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...N wind 35 kt. Gusts up to 50 kts out of bays and passes. 
Seas 16 ft.
.TUE...NW wind 35 kt. Gusts up to 50 kts out of bays and passes. 
Seas 12 ft.
.TUE NIGHT...W wind 30 kt. Seas 11 ft.
.WED...SW wind 30 kt. Seas 12 ft.
.WED NIGHT...W wind 40 kt. Seas 14 ft.
.THU...W wind 30 kt. Seas 13 ft.
.FRI THROUGH SAT...N wind 45 kt. Seas 15 ft.

$$

PKZ160-261300-
Bristol Bay-
356 PM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...NW wind 30 kt. Seas 9 ft.
.TUE...NW wind 25 kt. Seas 9 ft.
.TUE NIGHT...NW wind 20 kt. Seas 7 ft. Rain showers.
.WED...S wind 25 kt. Seas 8 ft.
.WED NIGHT...NW wind 15 kt. Seas 8 ft.
.THU...NW wind 15 kt. Seas 7 ft.
.FRI...N wind 30 kt. Seas 9 ft.
.SAT...N wind 35 kt. Seas 12 ft.

$$

PKZ165-261300-
Port Heiden to Cape Sarichef-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 11 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.TUE NIGHT...W wind 25 kt becoming SW 35 kt after midnight. From
Port Moller E, SW wind 25 kt. Seas 11 ft. Rain showers.
.WED...W wind 30 kt. Seas 15 ft.
.WED NIGHT...W wind 30 kt. Seas 19 ft.
.THU...NW wind 25 kt. Seas 13 ft.
.FRI...N wind 35 kt. Seas 14 ft.
.SAT...N wind 40 kt. Seas 14 ft.

$$

PKZ170-261300-
Cape Sarichef to Nikolski Bering Side-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...NW wind 30 kt. Seas 11 ft.
.TUE...W wind 30 kt. Seas 9 ft.
.TUE NIGHT...SW wind 35 kt. Seas 11 ft. Rain showers and snow
showers.
.WED AND WED NIGHT...NW wind 40 kt. Seas 18 ft.
.THU THROUGH FRI...N wind 30 kt. Seas 13 ft.
.SAT...N wind 35 kt. Seas 12 ft.

$$

PKZ171-261300-
Unalaska Bay-
356 PM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...NW wind 30 kt. Seas 10 ft.
.TUE...W wind 25 kt. Seas 4 ft.
.TUE NIGHT...SW wind 25 kt. Seas 4 ft. Rain showers.
.WED...W wind 35 kt. Seas 5 ft.
.WED NIGHT...W wind 35 kt. Seas 10 ft.
.THU...NE wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...N wind 25 kt. Seas 10 ft.

$$

PKZ172-261300-
Cape Sarichef to Nikolski Pacific Side-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...NW wind 30 kt. Seas 12 ft.
.TUE...NW wind 30 kt. Seas 9 ft.
.TUE NIGHT...W wind 25 kt becoming SW 35 kt after midnight. Seas
10 ft.
.WED...W wind 35 kt. Seas 12 ft.
.WED NIGHT...W wind 40 kt. Seas 13 ft.
.THU...NE wind 35 kt. Seas 10 ft.
.FRI THROUGH SAT...NW wind 40 kt. Seas 14 ft.

$$

PKZ173-261300-
Nikolski to Seguam Island Bering Side-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 9 ft.
.TUE...W wind 25 kt. Seas 8 ft.
.TUE NIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas 
10 ft. Rain showers.
.WED AND WED NIGHT...NW wind 30 kt. Seas 13 ft.
.THU...NE wind 40 kt. Seas 12 ft.
.FRI...NW wind 30 kt. Seas 12 ft.
.SAT...N wind 25 kt. Seas 10 ft.

$$

PKZ174-261300-
Nikolski to Seguam Island Pacific Side-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 11 ft.
.TUE...W wind 25 kt. Seas 7 ft.
.TUE NIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas 
13 ft. Rain showers.
.WED...W wind 35 kt. Seas 13 ft.
.WED NIGHT...W wind 30 kt. Seas 11 ft.
.THU...NE wind 45 kt. Seas 16 ft.
.FRI...NW wind 35 kt. Seas 17 ft.
.SAT...N wind 25 kt. Seas 12 ft.

$$

PKZ175-261300-
Seguam Island to Adak Bering Side-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...W wind 20 kt. Seas 6 ft.
.TUE...W wind 30 kt. Seas 8 ft.
.TUE NIGHT...W wind 35 kt. Seas 11 ft. Rain showers.
.WED...NW wind 30 kt. Seas 10 ft.
.WED NIGHT...N wind 25 kt. Seas 10 ft.
.THU...NE wind 40 kt. Seas 13 ft.
.FRI...W wind 25 kt. Seas 12 ft.
.SAT...NE wind 20 kt. Seas 8 ft.

$$

PKZ176-261300-
Seguam Island to Adak Pacific Side-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...NW wind 15 kt. Seas 8 ft.
.TUE...W wind 25 kt. Seas 8 ft.
.TUE NIGHT...W wind 35 kt. Seas 12 ft.
.WED...W wind 30 kt. Seas 12 ft.
.WED NIGHT...S wind 30 kt. Seas 8 ft.
.THU...NE wind 45 kt. Seas 17 ft.
.FRI...NW wind 35 kt. Seas 17 ft.
.SAT...NE wind 30 kt. Seas 9 ft.

$$

PKZ177-261300-
Adak to Kiska-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...W wind increasing to 20 kt. Seas 7 ft.
.TUE...W wind 30 kt. Seas 10 ft.
.TUE NIGHT...W wind 35 kt. Seas 11 ft.
.WED...W wind 30 kt. Seas 11 ft.
.WED NIGHT...E wind 35 kt. Seas 11 ft.
.THU...N wind 45 kt. Seas 17 ft.
.FRI...SW wind 20 kt. Seas 14 ft.
.SAT...E wind 30 kt. Seas 8 ft.

$$

PKZ178-261300-
Kiska to Attu-
356 PM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 20 kt increasing to 30 kt after midnight. Seas 9 ft.
.TUE THROUGH TUE NIGHT...W wind 30 kt. Seas 12 ft.
.WED...SE wind 20 kt. Seas 9 ft.
.WED NIGHT...E wind 40 kt. Seas 13 ft.
.THU...NW wind 40 kt. Seas 15 ft.
.FRI...S wind 25 kt. Seas 11 ft.
.SAT...NE wind 30 kt. Seas 9 ft.

$$

PKZ179-261300-
Pribilof Islands Near Shore Waters-
356 PM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 8 ft.
.TUE...W wind 25 kt. Seas 8 ft.
.TUE NIGHT...SW wind 30 kt. Seas 11 ft. Rain showers and snow showers.
.WED...NW wind 40 kt. Seas 19 ft.
.WED NIGHT...NW wind 30 kt. Seas 16 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 9 ft.
.SAT...N wind 25 kt. Seas 9 ft.

$$

PKZ180-261300-
Kuskokwim Delta and Etolin Strait-
356 PM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...NW wind 30 kt. Seas 8 ft.
.TUE...NW wind 25 kt. Seas 7 ft.
.TUE NIGHT...SW wind 20 kt. Seas 7 ft. Rain showers.
.WED...W wind 20 kt. Seas 9 ft.
.WED NIGHT...NW wind 30 kt. Seas 10 ft.
.THU...NW wind 20 kt. Seas 8 ft.
.FRI...N wind 30 kt. Seas 10 ft.
.SAT...N wind 35 kt. Seas 11 ft.

$$

PKZ181-261300-
North and West of Nunivak Island-
356 PM AKDT Mon Oct 25 2021

...SMALL CRAFT ADVISORY TONIGHT AND TUESDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 7 ft.
.TUE...SW wind 20 kt. Seas 7 ft.
.TUE NIGHT...SW wind 15 kt becoming E 25 kt after midnight. Seas 6 ft.
.WED...N wind 30 kt. Seas 9 ft.
.WED NIGHT...N wind 25 kt. Seas 8 ft.
.THU THROUGH FRI...NW wind 25 kt. Seas 7 ft.
.SAT...N wind 30 kt. Seas 9 ft.

$$

PKZ185-261300-
Saint Matthew Island Waters-
356 PM AKDT Mon Oct 25 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...W wind 25 kt. Seas 8 ft. Freezing spray.
.TUE...SW wind 25 kt E of Saint Matthew Island... SW 30 kt W of
Saint Matthew Island. Seas 8 ft.
.TUE NIGHT...E of Saint Matthew Island, E wind 20 kt becoming N
after midnight. W of Saint Matthew Island, N wind 35 kt. Seas 12
ft. Freezing spray.
.WED...N wind 30 kt. Seas 12 ft.
.WED NIGHT...NW wind 20 kt. Seas 9 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 7 ft.
.SAT...E wind 25 kt. Seas 10 ft.

$$

813 
FZAK52 PAFC 261206
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
406 AM AKDT Tue Oct 26 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.

PKZ199-270115-
406 AM AKDT Tue Oct 26 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi volcano, located 140 nm west of Adak, is currently 
active.

A 998 mb low will move to 250 nm west of St Matthew Island at 991 mb
Wednesday afternoon. A North Pacific Low at 992 mb low 350 nm 
southwest of Attu Island Wednesday morning will move to 200 nm south 
of Nikolski at 983 mb Thursday afternoon.

$$

PKZ150-270115-
South of the AK Peninsula Sitkinak to Castle Cape-
406 AM AKDT Tue Oct 26 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 35 kt. Gusts up to 50 kt out of bays and passes. 
Seas 14 ft.
.TONIGHT...NW wind 35 kt. Gusts to 50 kt out of bays and passes. 
Seas 13 ft.
.WED...W wind 30 kt. Seas 11 ft.
.WED NIGHT...W wind 30 kt. Seas 11 ft.
.THU...W wind 30 kt. Seas 12 ft.
.FRI THROUGH SAT...NE wind 30 kt. Seas 21 ft.

$$

PKZ155-270115-
South of the AK Peninsula Castle Cape to Cape Sarichef-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 30 kt. Gusts up to 50 kt out of bays and passes. 
Seas 12 ft.
.TONIGHT...NW wind 30 kt. Gusts up to 50 kt out of bays and passes. 
Seas 11 ft.
.WED...SW wind 30 kt. Seas 12 ft.
.WED NIGHT...W wind 35 kt. Seas 14 ft.
.THU...W wind 35 kt. Seas 13 ft.
.FRI...N wind 45 kt. Seas 17 ft.
.SAT...NW wind 40 kt. Seas 16 ft.

$$

PKZ160-270115-
Bristol Bay-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY TODAY AND WEDNESDAY...

.TODAY...NW wind 25 kt. Seas 7 ft.
.TONIGHT...NW wind 20 kt. Seas 5 ft.
.WED...SW wind 25 kt. Seas 7 ft. Rain showers.
.WED NIGHT...E wind 15 kt. Seas 7 ft.
.THU...NW wind 15 kt. Seas 7 ft.
.FRI...N wind 35 kt. Seas 9 ft.
.SAT...N wind 30 kt. Seas 9 ft.

$$

PKZ165-270115-
Port Heiden to Cape Sarichef-
406 AM AKDT Tue Oct 26 2021

...GALE WARNING WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 10 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 11 ft. Rain showers.
.WED...W wind 30 kt increasing to 40 kt in the afternoon. From
Port Moller E, W wind 30 kt. Seas 15 ft. Rain showers and snow 
showers.
.WED NIGHT...W wind 40 kt. Seas 18 ft.
.THU...NW wind 25 kt. Seas 12 ft.
.FRI THROUGH SAT...NW wind 40 kt. Seas 16 ft.

$$

PKZ170-270115-
Cape Sarichef to Nikolski Bering Side-
406 AM AKDT Tue Oct 26 2021

...GALE WARNING WEDNESDAY...

.TODAY...W wind 30 kt. Seas 10 ft.
.TONIGHT...SW wind 30 kt. Seas 10 ft. Rain showers.
.WED...W wind 35 kt. Seas 17 ft.
.WED NIGHT...NW wind 40 kt. Seas 20 ft.
.THU THROUGH SAT...N wind 35 kt. Seas 13 ft.

$$

PKZ171-270115-
Unalaska Bay-
406 AM AKDT Tue Oct 26 2021

...GALE WARNING WEDNESDAY...

.TODAY...NW wind 25 kt. Seas 4 ft.
.TONIGHT...W wind 30 kt. Seas 4 ft. Rain showers.
.WED...W wind 25 kt increasing to 35 kt in the afternoon. Seas 5 ft.
.WED NIGHT...W wind 35 kt. Seas 5 ft.
.THU...NE wind 30 kt. Seas 10 ft.
.FRI THROUGH SAT...NW wind 30 kt. Seas 13 ft.

$$

PKZ172-270115-
Cape Sarichef to Nikolski Pacific Side-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 9 ft.
.TONIGHT...W wind 30 kt. Seas 10 ft. Rain showers.
.WED...W wind 30 kt. Seas 11 ft.
.WED NIGHT...W wind 35 kt. Seas 12 ft.
.THU...NE wind 40 kt. Seas 13 ft.
.FRI THROUGH SAT...NW wind 40 kt. Seas 15 ft.

$$

PKZ173-270115-
Nikolski to Seguam Island Bering Side-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 20 kt in the morning becoming SW 30 kt. Seas 8 ft.
.TONIGHT...W wind 30 kt. Seas 10 ft. Rain showers.
.WED...W wind 30 kt. Seas 14 ft.
.WED NIGHT...NW wind 25 kt. Seas 14 ft.
.THU...NE wind 40 kt. Seas 12 ft.
.FRI...NW wind 35 kt. Seas 13 ft.
.SAT...N wind 20 kt. Seas 8 ft.

$$

PKZ174-270115-
Nikolski to Seguam Island Pacific Side-
406 AM AKDT Tue Oct 26 2021

...GALE WARNING TONIGHT...

.TODAY...W wind 25 kt. Seas 7 ft.
.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas 12 
ft. Rain showers.
.WED...W wind 30 kt. Seas 12 ft.
.WED NIGHT...NW wind 25 kt. Seas 10 ft.
.THU...NE wind 45 kt. Seas 16 ft.
.FRI...NW wind 40 kt. Seas 17 ft.
.SAT...N wind 30 kt. Seas 11 ft.

$$

PKZ175-270115-
Seguam Island to Adak Bering Side-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 30 kt. Seas 8 ft.
.TONIGHT...W wind 30 kt. Seas 10 ft. Rain showers.
.WED...NW wind 30 kt. Seas 10 ft.
.WED NIGHT...NE wind 30 kt. Seas 10 ft.
.THU...N wind 40 kt. Seas 13 ft.
.FRI...W wind 30 kt. Seas 10 ft.
.SAT...SE wind 25 kt. Seas 7 ft.

$$

PKZ176-270115-
Seguam Island to Adak Pacific Side-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 20 kt increasing to 30 kt in the afternoon. Seas
8 ft.
.TONIGHT...W wind 30 kt. Seas 11 ft.
.WED...W wind 30 kt diminishing to 20 kt in the afternoon. Seas
11 ft.
.WED NIGHT...SE wind 35 kt. Seas 8 ft.
.THU...NE wind 45 kt. Seas 17 ft.
.FRI...NW wind 35 kt. Seas 15 ft.
.SAT...SE wind 30 kt. Seas 13 ft.

$$

PKZ177-270115-
Adak to Kiska-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 30 kt. Seas 10 ft.
.TONIGHT...W wind 30 kt. Seas 11 ft.
.WED...W wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft.
.WED NIGHT...E wind 40 kt. Seas 10 ft.
.THU...N wind 45 kt. Seas 17 ft.
.FRI...SW wind 25 kt. Seas 11 ft.
.SAT...E wind 30 kt. Seas 14 ft.

$$

PKZ178-270115-
Kiska to Attu-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 30 kt. Seas 11 ft.
.TONIGHT...W wind 30 kt. Seas 11 ft.
.WED...SW wind 15 kt becoming SE in the afternoon. Seas 8 ft.
.WED NIGHT...E wind 40 kt. Seas 10 ft.
.THU...NW wind 40 kt. Seas 15 ft.
.FRI...S wind 20 kt. Seas 9 ft.
.SAT...NE wind 30 kt. Seas 13 ft.

$$

PKZ179-270115-
Pribilof Islands Near Shore Waters-
406 AM AKDT Tue Oct 26 2021

...GALE WARNING WEDNESDAY...

.TODAY...SW wind 25 kt. Seas 9 ft. Rain showers.
.TONIGHT...W wind 30 kt. Seas 12 ft. Snow showers.
.WED...NW wind 45 kt. Seas 20 ft. Snow showers.
.WED NIGHT...NW wind 35 kt. Seas 15 ft.
.THU THROUGH FRI...NW wind 25 kt. Seas 8 ft.
.SAT...NW wind 15 kt. Seas 6 ft.

$$

PKZ180-270115-
Kuskokwim Delta and Etolin Strait-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 25 kt. Seas 7 ft.
.TONIGHT...SW wind 25 kt. Seas 8 ft. Rain showers.
.WED...SW wind 25 kt diminishing to 15 kt in the afternoon. Seas
9 ft.
.WED NIGHT...N wind 20 kt. Seas 9 ft.
.THU...NW wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...N wind 35 kt. Seas 11 ft.

$$

PKZ181-270115-
North and West of Nunivak Island-
406 AM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...NW wind 15 kt becoming S 20 kt in the afternoon. Seas 7 ft.
.TONIGHT...S wind 20 kt. Seas 7 ft.
.WED...E wind 20 kt in the morning becoming N wind 30 kt. Seas 10 
ft.
.WED NIGHT...N wind 30 kt. Seas 8 ft.
.THU THROUGH SAT...N wind 20 kt. Seas 6 ft.

$$

PKZ185-270115-
Saint Matthew Island Waters-
406 AM AKDT Tue Oct 26 2021

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...E of Saint Matthew Island, SW wind 25 kt. W of Saint
Matthew Island, SW wind 25 kt increasing to 35 kt in the
afternoon. Seas 8 ft.
.TONIGHT...E of Saint Matthew Island, S wind 20 kt becoming NE
after midnight. W of Saint Matthew Island, NW wind 40 kt. Seas 13 
ft. Freezing spray W of Saint Matthew Island. Snow with rain 
showers E of Saint Matthew Island.
.WED...N wind 35 kt. Seas 12 ft. Freezing spray.
.WED NIGHT...N wind 25 kt. Seas 9 ft.
.THU...NW wind 20 kt. Seas 7 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.SAT...S wind 15 kt. Seas 6 ft.

$$

398 
FZAK52 PAFC 270005
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
405 PM AKDT Tue Oct 26 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.

PKZ199-271245-
405 PM AKDT Tue Oct 26 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 991 mb low at 61N 178W moves into the Western Gulf of Alaska at
997 mb by Thu afternoon. Its front moves into the Gulf for Thu 
afternoon. A 982 mb North Pacific low moves to 50N 171W by Thu 
afternoon. Its front remains south of the Aleutians through Thu 
afternoon.

$$

PKZ150-271245-
South of the AK Peninsula Sitkinak to Castle Cape-
405 PM AKDT Tue Oct 26 2021

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt. Gusts to 50 kts out of bays and passes in
the evening. Seas 12 ft.
.WED...SW wind 30 kt. Seas 11 ft.
.WED NIGHT...W wind 25 kt. Seas 10 ft.
.THU AND THU NIGHT...NW wind 30 kt. Seas 12 ft.
.FRI...NE wind 40 kt. Seas 21 ft.
.SAT...NE wind 30 kt. Seas 21 ft.
.SUN...NE wind 20 kt. Seas 17 ft.

$$

PKZ155-271245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
405 PM AKDT Tue Oct 26 2021

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 25 kt increasing to 35 kt after midnight. Seas 11 ft.
.WED...W wind 35 kt. Seas 12 ft.
.WED NIGHT...W wind 35 kt. Seas 13 ft.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...NE wind 40 kt. Seas 8 ft.
.FRI...N wind 45 kt. Seas 17 ft.
.SAT...NW wind 40 kt. Seas 16 ft.
.SUN...N wind 25 kt. Seas 13 ft.

$$

PKZ160-271245-
Bristol Bay-
405 PM AKDT Tue Oct 26 2021

...SMALL CRAFT ADVISORY WEDNESDAY...

.TONIGHT...NW wind 20 kt becoming S after midnight. Seas 5 ft. Rain 
showers.
.WED...SW wind 25 kt. Seas 7 ft. Rain showers and widespread snow showers.
.WED NIGHT...SW wind 15 kt becoming N after midnight. Seas 7 ft.
.THU AND THU NIGHT...NW wind 10 kt. Seas 6 ft.
.FRI...N wind 35 kt. Seas 9 ft.
.SAT...N wind 30 kt. Seas 9 ft.
.SUN...NE wind 25 kt. Seas 7 ft.

$$

PKZ165-271245-
Port Heiden to Cape Sarichef-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...W wind 30 kt. Seas 10 ft. Rain showers.
.WED...W wind 35 kt except W 30 kt from Port Moller E. Seas 11 ft.
Rain showers.
.WED NIGHT...W wind 45 kt becoming NW 35 kt after midnight. From
Port Moller E, SW wind 25 kt. Seas 18 ft except 13 ft from Port
Moller E. Rain showers.
.THU...NW wind 25 kt. Seas 12 ft.
.THU NIGHT...N wind 25 kt. Seas 7 ft.
.FRI THROUGH SAT...NW wind 40 kt. Seas 16 ft.
.SUN...N wind 25 kt. Seas 10 ft.

$$

PKZ170-271245-
Cape Sarichef to Nikolski Bering Side-
405 PM AKDT Tue Oct 26 2021

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 35 kt. Seas 10 ft. Rain showers.
.WED...W wind 35 kt. Seas 15 ft.
.WED NIGHT...W wind 40 kt becoming NW 30 kt after midnight. Seas 19 ft.
.THU...N wind 25 kt. Seas 12 ft.
.THU NIGHT...N wind 30 kt. Seas 10 ft.
.FRI THROUGH SAT...N wind 35 kt. Seas 13 ft.
.SUN...N wind 25 kt. Seas 10 ft.

$$

PKZ171-271245-
Unalaska Bay-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...SW wind 30 kt. Seas 5 ft. Widespread rain showers.
.WED...W wind 35 kt. Seas 5 ft. Rain showers.
.WED NIGHT...W wind 40 kt diminishing to 30 kt after midnight.
Seas 6 ft.
.THU...NE wind 15 kt. Seas 2 ft.
.THU NIGHT...NE wind 30 kt. Seas 9 ft.
.FRI...N wind 35 kt. Seas 13 ft.
.SAT...NW wind 30 kt. Seas 13 ft.
.SUN...N wind 15 kt. Seas 5 ft.

$$

PKZ172-271245-
Cape Sarichef to Nikolski Pacific Side-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...W wind 30 kt. Seas 10 ft.
.WED THROUGH WED NIGHT...W wind 35 kt. Seas 11 ft.
.THU...E wind 35 kt. Seas 8 ft.
.THU NIGHT...NE wind 40 kt. Seas 12 ft.
.FRI THROUGH SAT...NW wind 40 kt. Seas 15 ft.
.SUN...N wind 25 kt. Seas 12 ft.

$$

PKZ173-271245-
Nikolski to Seguam Island Bering Side-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...W wind 30 kt. Seas 10 ft.
.WED...W wind 30 kt. Seas 13 ft.
.WED NIGHT...NW wind 30 kt becoming N 15 kt after midnight. Seas 13 ft.
.THU...NE wind 30 kt. Seas 10 ft.
.THU NIGHT...N wind 35 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 11 ft.
.SAT...N wind 20 kt. Seas 8 ft.
.SUN...NE wind 25 kt. Seas 9 ft.

$$

PKZ174-271245-
Nikolski to Seguam Island Pacific Side-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...W wind 30 kt. Seas 12 ft. Rain showers.
.WED...W wind 30 kt. Seas 11 ft.
.WED NIGHT...NW wind 25 kt becoming NE 15 kt after midnight. Seas 10 ft.
.THU...E wind 40 kt. Seas 12 ft.
.THU NIGHT...N wind 40 kt. Seas 16 ft.
.FRI...NW wind 40 kt. Seas 16 ft.
.SAT...N wind 30 kt. Seas 11 ft.
.SUN...NE wind 25 kt. Seas 14 ft.

$$

PKZ175-271245-
Seguam Island to Adak Bering Side-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...W wind 30 kt. Seas 10 ft. Rain showers.
.WED...W wind 25 kt. Seas 10 ft.
.WED NIGHT...N wind 20 kt becoming E 30 kt after midnight. Seas 10 ft.
.THU...NE wind 35 kt. Seas 10 ft.
.THU NIGHT...N wind 30 kt. Seas 10 ft.
.FRI...W wind 30 kt. Seas 9 ft.
.SAT...SE wind 25 kt. Seas 7 ft.
.SUN...NE wind 30 kt. Seas 14 ft.

$$

PKZ176-271245-
Seguam Island to Adak Pacific Side-
405 PM AKDT Tue Oct 26 2021

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 11 ft.
.WED...W wind 30 kt. Seas 11 ft.
.WED NIGHT...SW wind 15 kt becoming E 40 kt after midnight. Seas
8 ft. Rain.
.THU...NE wind 45 kt. Seas 15 ft.
.THU NIGHT...N wind 40 kt. Seas 15 ft.
.FRI...NW wind 30 kt. Seas 13 ft.
.SAT...SE wind 30 kt. Seas 13 ft.
.SUN...N wind 30 kt. Seas 16 ft.

$$

PKZ177-271245-
Adak to Kiska-
405 PM AKDT Tue Oct 26 2021

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 11 ft.
.WED...W wind 25 kt becoming SW 15 kt in the afternoon. Seas 10 ft.
.WED NIGHT...E wind 30 kt increasing to 40 kt after midnight. Seas
10 ft. Rain.
.THU...NE wind 45 kt. Seas 14 ft.
.THU NIGHT...NW wind 30 kt. Seas 13 ft.
.FRI...W wind 20 kt. Seas 10 ft.
.SAT...E wind 30 kt. Seas 14 ft.
.SUN...NW wind 25 kt. Seas 16 ft.

$$

PKZ178-271245-
Kiska to Attu-
405 PM AKDT Tue Oct 26 2021

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 11 ft.
.WED...SW wind 20 kt becoming SE in the afternoon. Seas 8 ft.
.WED NIGHT...NE wind 40 kt. Seas 10 ft.
.THU...N wind 35 kt. Seas 12 ft.
.THU NIGHT...W wind 20 kt. Seas 11 ft.
.FRI...SW wind 20 kt. Seas 8 ft.
.SAT...NE wind 30 kt. Seas 13 ft.
.SUN...W wind 30 kt. Seas 18 ft.

$$

PKZ179-271245-
Pribilof Islands Near Shore Waters-
405 PM AKDT Tue Oct 26 2021

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind increasing to 35 kt. Seas 9 ft in the evening 
building to 13 ft.
.WED...NW wind 45 kt. Seas 15 ft building to 20 ft in the afternoon.
Snow showers.
.WED NIGHT...NW wind 45 kt diminishing to 25 kt after midnight.
Seas 17 ft subsiding to 12 ft after midnight.
.THU AND THU NIGHT...N wind 20 kt. Seas 8 ft.
.FRI...NW wind 25 kt. Seas 6 ft.
.SAT...NW wind 15 kt. Seas 6 ft.
.SUN...N wind 20 kt. Seas 8 ft.

$$

PKZ180-271245-
Kuskokwim Delta and Etolin Strait-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...SW wind 25 kt. Seas 8 ft. Rain and snow showers.
.WED...SW wind 20 kt. Seas 10 ft.
.WED NIGHT...NE wind 20 kt. Seas 10 ft.
.THU AND THU NIGHT...N wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...N wind 35 kt. Seas 11 ft.
.SUN...N wind 25 kt. Seas 9 ft.

$$

PKZ181-271245-
North and West of Nunivak Island-
405 PM AKDT Tue Oct 26 2021

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

.TONIGHT...SE wind 25 kt...except SW W of Nunivak Island. Seas 7 ft.
Rain showers.
.WED...NE wind 30 kt. Seas 10 ft.
.WED NIGHT...N wind 30 kt. Seas 9 ft.
.THU...N wind 20 kt. Seas 7 ft.
.THU NIGHT...NW wind 25 kt. Seas 7 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.SAT...N wind 20 kt. Seas 4 ft.
.SUN...N wind 25 kt. Seas 9 ft.

$$

PKZ185-271245-
Saint Matthew Island Waters-
405 PM AKDT Tue Oct 26 2021

...STORM WARNING TONIGHT...

.TONIGHT...E of Saint Matthew Island, SE wind 25 kt becoming N
after midnight. W of Saint Matthew Island, N wind increasing to 50 
kt. Seas 15 ft. and rain showers.
.WED...E of Saint Matthew Island, N wind 30 kt. W of Saint Matthew
Island, N wind 40 kt diminishing to 30 kt in the afternoon. Seas 15 ft.
.WED NIGHT...N wind 30 kt becoming NW 20 kt after midnight. Seas
10 ft. Freezing spray.
.THU AND THU NIGHT...NW wind 20 kt. Seas 6 ft.
.FRI...W wind 20 kt. Seas 6 ft.
.SAT...S wind 15 kt. Seas 6 ft.
.SUN...NE wind 25 kt. Seas 12 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
531 AM AKDT Sun Oct 24 2021

.ANALYSIS AND UPPER LEVELS...

The upper levels feature a low over the southern Gulf with rather
weak and chaotic flow over Southcentral and Southwest Alaska. A
trough extends into the Kuskokwim Delta from the northwest, with
ridging over much of the Bering. Another shortwave disturbance is
over the Western Aleutians. The key feature is an intense 160 kt
jet over the Central to Eastern Aleutians, which intensifies to
180 kt as it turns southeastward into the North Pacific south of
the AKPEN.

At the surface, a low is both weakening and rapidly shifting south
of Kodiak this morning, with a wide area of cumulus over much of
the Gulf this morning. A stronger low is moving towards the
Panhandle. A shortwave disturbance is causing snow along the
Talkeetnas and far western Copper River Basin. Rain shower
activity stretches across the North Gulf Coast, southern Prince
William Sound, and is moving over the Kenai Mountains, including
Seward. Dry weather persists over Anchorage, the Mat Valley, and
the western Kenai Peninsula. Outside of an isolated shower over
Bristol Bay near Koliganek and New Stuyahok, much of Southwest
Alaska is also dry, but under mainly cloudy skies.

A large low is moving across the western Bering through the
Central Aleutians, with unstable stratus developing from colder
air moving southeastward from the Kuskokwim Delta to the AKPEN.

&&

.MODEL DISCUSSION...

The models are in excellent agreement through late Monday night.
The models have struggled a bit with the timing of bringing colder
air into southern Alaska, especially Southcentral by midweek, but
overall quiet weather across the mainland, with a storm force low
racing across the Aleutians are all being well handled by the
models this morning. Forecast confidence is high.

&&

.AVIATION...
PANC...VFR conditions and light winds will persist. A shower or
two may develop in the vicinity this morning.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2: Today
through Monday night)...

An area of low pressure southeast of Kodiak remains mostly
stationary over the western Gulf this morning. Radar and
satellite reveal some of the more subtle details associated with
this feature, including a shortwave tracking northwest across the
Copper Basin and ongoing light showers from Prince William Sound
into the eastern slopes of the Kenai Peninsula. A tightened
pressure gradient between these two lows is producing Small Craft
winds offshore of the coast into Prince William Sound. Buoy 61 has
reported gusts ranging from 25 to 33 knots during the overnight
hours and these winds will likely persist through the first half
of Sunday before tapering off Sunday afternoon and evening. A light
rain/snow mix is occurring over the Talkeetnas and is expected to
persist into the latter half of the day as the shortwave moving
across the Copper Basin begins a northward jaunt into central
Alaska. However, any snow accumulations should also remain light
and confined to the higher elevations, leaving the main roads
clear.

Meanwhile, the Anchorage Bowl will see some clearing of clouds
throughout the day on Sunday as the low over the gulf temporarily
retreats southward and further away from the region, and the
shortwave over the Copper Basin departs Southcentral completely by
Monday. Partly cloudy to partly sunny will be the story of the day
for inland portions of Southcentral into Monday with relatively
warmer temperatures in the upper 30's and low to mid 40's.
Further south, any lingering precipitation will be confined to the
east half of the Kenai Peninsula and Kodiak Island.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2: Today
through Monday night)...

Cooler air will move across the region over the next couple of
days as shortwaves rotating around an Arctic low north of the
Bering Strait draw in cooler air. Lows will generally be in the
20s and highs in the 30s. The first shortwave will move across
the area today producing areas of light rain and snow mainly
across Bristol Bay where the most of the energy will be located.
However, no significant accumulations of snow expected as most of
the activity with be very light. Monday night another shortwave
will bring a few snow showers to the Kuskokwim Delta.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2: Today
through Monday night)...

A ridge of high pressure across the eastern Bering and Aleutians
this morning will give way to a storm force low moving along the
Aleutian chain today and then moving south of the AKPEN and into
the Gulf by Monday morning. This low will bring a good swath of
gales and areas of storms near the Central Aleutians with areas
of moderate to heavy rain. Behind this low a broad ridge with
winds small craft or less is expected Monday and Monday night
across much of the area.

&&

.MARINE (Days 3 through 5: Tuesday through Thursday)...

A well developed low in the central Gulf will reach the Gulf
Coast on Wednesday and dissipate. Northwesterly gale force gap
winds are likely through the Alaska Peninsula stretching to the
Barren Islands until Wednesday morning. Seas to 18 feet south of
Kodiak Island will diminish Wednesday.

A low develops over the Bering by Tuesday afternoon and tracks
over the Alaska Peninsula on Wednesday and will likely be located
over Kodiak Island by Thursday morning. Forecast confidence is
high for high end gales across the Bering from late Tuesday night
until Thursday. Seas to 15 feet are likely across the central and
southern Bering on Wednesday and will subside Thursday.

A new low approaches the western Aleutians early Thursday
morning. However, forecast confidence with this low is extremely
low at this time. Some models indicate near storm force winds
while others indicate small craft winds. This area of the forecast
will continue to be refined over the next few days.

&&

.Long Term Discussion (Days 4 through 7: Wednesday through Saturday)...

Overall, there is decent model consensus through the end of the
week and entering the weekend. Each solution is pointing towards
a broad longwave trough pattern developing across Southern Alaska,
including both the Bering Sea and the Gulf of Alaska. This
pattern features a North Pacific low moving into the Gulf of
Alaska by Wednesday, while a separate system moves southwards out
of Russia across the Bering, both of which are expected to produce
some form of precipitation for their respective areas. The chance
for snow increases as elevation increases. The Gulf low moves
onshore over Prince William Sound by Thursday and fizzles out,
meanwhile, the Bering low crosses the Alaska Peninsula and into
the Gulf. This is when model spread begins to grow. There are some
timing issues as to when the low moves over Kodiak, but most
solutions agree on turning to a northerly track moving up Cook
Inlet.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Storm Warning: 173-177.
Gale Warning: 155, 170-172, 178, 411, 413.

&&

SYNOPSIS AND MODEL DISCUSSION...JPW
SOUTHCENTRAL ALASKA...BL
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...RC
MARINE/LONG TERM...AF/KM