Storm Warning 53, NWS Anchorage, AK

281 
FZAK52 PAFC 210041
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
341 PM AKST Mon Feb 20 2023

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.

PKZ199-211345-
341 PM AKST Mon Feb 20 2023
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 981 mb low 110 nm southwest of Kiska moves to 300 nm north of 
Shemya at 975 mb Tue morning. The low tracks into eastern Russia at 
990 mb Wed morning. An elongated 976 mb low 260 nm southwest of 
Shemya Tue afternoon moves to 270 nm west of Saint Matthew Island at 
965 mb Wed afternoon.

$$

PKZ150-211345-
South of the AK Peninsula Sitkinak to Castle Cape-
341 PM AKST Mon Feb 20 2023

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

.TONIGHT...SW wind 25 kt. Seas 10 ft.
.TUE...SW wind 20 kt. Seas 9 ft.
.TUE NIGHT...S wind 20 kt. Seas 8 ft.
.WED...S wind 15 kt. Seas 9 ft.
.WED NIGHT...S wind 25 kt. Seas 9 ft.
.THU...W wind 20 kt. Seas 9 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.SAT...W wind 30 kt. Seas 14 ft.

$$

PKZ155-211345-
South of the AK Peninsula Castle Cape to Cape Sarichef-
341 PM AKST Mon Feb 20 2023

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

.TONIGHT...SW wind 30 kt. Seas 13 ft.
.TUE...S wind 30 kt. Seas 13 ft.
.TUE NIGHT...S wind 20 kt. From the Shumagin Islands E, S wind 20
kt in the evening becoming variable 10 kt. Seas 12 ft.
.WED...S wind 25 kt. Seas 12 ft.
.WED NIGHT...SW wind 25 kt. Seas 11 ft.
.THU...W wind 20 kt. Seas 11 ft.
.FRI...W wind 30 kt. Seas 10 ft.
.SAT...W wind 30 kt. Seas 17 ft.

$$

PKZ160-211345-
Bristol Bay-
341 PM AKST Mon Feb 20 2023

...SMALL CRAFT ADVISORY TUESDAY...

.TONIGHT...SE wind 15 kt. Seas in ice free waters 4 ft.
.TUE...E wind 25 kt. Seas in ice free waters 4 ft.
.TUE NIGHT...S wind 20 kt. Seas in ice free waters 6 ft.
.WED AND WED NIGHT...S wind 25 kt. Seas in ice free waters 5 ft.
.THU THROUGH SAT...W wind 20 kt. Seas in ice free waters 6 ft.

$$

PKZ165-211345-
Port Heiden to Cape Sarichef-
341 PM AKST Mon Feb 20 2023

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...S wind 25 kt becoming SE 40 kt after midnight. From
Port Moller E, SE wind 25 kt. Seas 7 ft.
.TUE...SE wind 40 kt. Seas 11 ft.
.TUE NIGHT...S wind 25 kt becoming SE 35 kt after midnight. From
Port Moller E, SE wind 25 kt. Seas 10 ft.
.WED...S wind 35 kt. Seas 10 ft.
.WED NIGHT...SW wind 25 kt. Seas 9 ft.
.THU THROUGH SAT...W wind 25 kt. Seas 10 ft.

$$

PKZ170-211345-
Cape Sarichef to Nikolski Bering Side-
341 PM AKST Mon Feb 20 2023

...STORM WARNING TONIGHT...

.TONIGHT...S wind 50 kt. Seas 10 ft building to 15 ft after
midnight.
.TUE...S wind 45 kt diminishing to 35 kt in the afternoon. Seas
17 ft.
.TUE NIGHT...S wind 40 kt. Seas 14 ft.
.WED...S wind 40 kt. Seas 14 ft.
.WED NIGHT...SW wind 30 kt. Seas 14 ft.
.THU...SW wind 25 kt. Seas 14 ft.
.FRI...SW wind 25 kt. Seas 8 ft.
.SAT...SW wind 35 kt. Seas 18 ft.

$$

PKZ171-211345-
Unalaska Bay-
341 PM AKST Mon Feb 20 2023

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

.TONIGHT...SE wind 25 kt. Seas 4 ft.
.TUE...S wind 25 kt. Seas 4 ft. Rain showers.
.TUE NIGHT...SE wind 25 kt. Seas 4 ft. Rain.
.WED...S wind 25 kt. Seas 3 ft.
.WED NIGHT...SW wind 15 kt. Seas 2 ft.
.THU...SW wind 15 kt. Seas 2 ft.
.FRI THROUGH SAT...SW wind 25 kt. Seas 4 ft.

$$

PKZ172-211345-
Cape Sarichef to Nikolski Pacific Side-
341 PM AKST Mon Feb 20 2023

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...S wind 40 kt. Seas 18 ft.
.TUE...S wind 40 kt diminishing to 30 kt in the afternoon. Seas
18 ft.
.TUE NIGHT...S wind 30 kt. Seas 16 ft.
.WED...S wind 30 kt. Seas 16 ft.
.WED NIGHT...SW wind 25 kt. Seas 13 ft.
.THU...W wind 20 kt. Seas 13 ft.
.FRI...W wind 25 kt. Seas 9 ft.
.SAT...SW wind 35 kt. Seas 23 ft.

$$

PKZ173-211345-
Nikolski to Seguam Island Bering Side-
341 PM AKST Mon Feb 20 2023

...STORM WARNING TONIGHT...

.TONIGHT...S wind 55 kt. Seas 20 ft building to 27 ft after
midnight. Rain.
.TUE...S wind 45 kt diminishing to 30 kt in the afternoon. Seas
26 ft subsiding to 19 ft in the afternoon.
.TUE NIGHT...SE wind 40 kt. Seas 18 ft. Rain.
.WED AND WED NIGHT...SW wind 35 kt. Seas 17 ft.
.THU...SW wind 25 kt. Seas 14 ft.
.FRI...SW wind 30 kt. Seas 12 ft.
.SAT...SW wind 30 kt. Seas 21 ft.

$$

PKZ174-211345-
Nikolski to Seguam Island Pacific Side-
341 PM AKST Mon Feb 20 2023

...STORM WARNING TONIGHT...

.TONIGHT...S wind 55 kt. Seas 21 ft building to 28 ft after 
midnight. Rain.
.TUE...S wind 40 kt diminishing to 25 kt in the afternoon. Seas
26 ft. Rain.
.TUE NIGHT...S wind 40 kt. Seas 20 ft. Rain.
.WED AND WED NIGHT...SW wind 30 kt. Seas 18 ft.
.THU...SW wind 25 kt. Seas 17 ft.
.FRI...SW wind 30 kt. Seas 15 ft.
.SAT...SW wind 35 kt. Seas 23 ft.

$$

PKZ175-211345-
Seguam Island to Adak Bering Side-
341 PM AKST Mon Feb 20 2023

...STORM WARNING THROUGH TUESDAY...

.TONIGHT...S wind 55 kt. Gusts to 70 kt. Seas 22 ft. Rain showers.
.TUE...SW wind 50 kt becoming S 30 kt in the afternoon. Seas 22 ft
subsiding to 14 ft in the afternoon. Rain.
.TUE NIGHT...SE wind 40 kt. Seas 14 ft. Rain.
.WED...S wind 45 kt. Seas 17 ft.
.WED NIGHT...SW wind 40 kt. Seas 19 ft.
.THU...SW wind 25 kt. Seas 11 ft.
.FRI...SW wind 30 kt. Seas 15 ft.
.SAT...SW wind 30 kt. Seas 22 ft.

$$

PKZ176-211345-
Seguam Island to Adak Pacific Side-
341 PM AKST Mon Feb 20 2023

...STORM WARNING TONIGHT...

.TONIGHT...S wind 55 kt. Gusts to 70 kt. Seas 32 ft. Rain.
.TUE...SW wind 40 kt becoming SE 30 kt in the afternoon. Seas 29
ft subsiding to 22 ft in the afternoon. Rain.
.TUE NIGHT...S wind 40 kt. Seas 21 ft. Rain.
.WED...SW wind 40 kt. Seas 21 ft.
.WED NIGHT...SW wind 35 kt. Seas 23 ft.
.THU...SW wind 25 kt. Seas 17 ft.
.FRI THROUGH SAT...SW wind 35 kt. Seas 22 ft.

$$

PKZ177-211345-
Adak to Kiska-
341 PM AKST Mon Feb 20 2023

...STORM WARNING TONIGHT...

.TONIGHT...S wind 45 kt becoming SW 55 kt after midnight. Bering
side, seas 18 ft. Pacific side, seas 24 ft building to 31 ft after
midnight. Rain and snow.
.TUE...SW wind 45 kt becoming SE 30 kt in the afternoon. Bering
side, seas 20 ft subsiding to 15 ft in the afternoon. Pacific side,
seas 27 ft subsiding to 20 ft in the afternoon. Rain and snow.
.TUE NIGHT...S wind 40 kt. Seas 20 ft.
.WED...SW wind 50 kt. Seas 28 ft.
.WED NIGHT...SW wind 40 kt. Seas 25 ft.
.THU...SW wind 30 kt. Seas 14 ft.
.FRI THROUGH SAT...S wind 35 kt. Seas 22 ft.

$$

PKZ178-211345-
Kiska to Attu-
341 PM AKST Mon Feb 20 2023

...GALE WARNING TONIGHT AND TUESDAY NIGHT...

.TONIGHT...NW wind 35 kt. Seas 14 ft. Rain showers.
.TUE...W wind 30 kt becoming E in the afternoon. Seas 16 ft. Snow.
.TUE NIGHT...SE wind 35 kt. Seas 17 ft. Snow and rain.
.WED...NW wind 40 kt. Seas 20 ft.
.WED NIGHT...W wind 25 kt. Seas 16 ft.
.THU THROUGH FRI...S wind 30 kt. Seas 16 ft.
.SAT...S wind 40 kt. Seas 20 ft.

$$

PKZ179-211345-
Pribilof Islands Near Shore Waters-
341 PM AKST Mon Feb 20 2023

...STORM WARNING THROUGH TUESDAY...

.TONIGHT...SE wind 40 kt becoming S 50 kt after midnight. Seas 11
ft building to 21 ft after midnight. Rain.
.TUE...S wind 50 kt. Seas 26 ft. Rain.
.TUE NIGHT...S wind 30 kt increasing to 40 kt after midnight. Seas
20 ft. Rain.
.WED AND WED NIGHT...SW wind 40 kt. Seas 20 ft.
.THU...SW wind 25 kt. Seas 18 ft.
.FRI THROUGH SAT...SW wind 20 kt. Seas 10 ft.

$$

PKZ180-211345-
Kuskokwim Delta and Etolin Strait-
341 PM AKST Mon Feb 20 2023

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...SE wind 25 kt increasing to 35 kt after midnight. Seas
in ice free waters 5 ft.
.TUE...SE wind 40 kt. Seas in ice free waters 7 ft building to 11
ft in the afternoon. Rain and snow.
.TUE NIGHT...S wind 35 kt. Seas in ice free waters 11 ft. Rain.
.WED AND WED NIGHT...S wind 35 kt. Seas in ice free waters 9 ft.
.THU...SW wind 30 kt. Seas in ice free waters 9 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas in ice free waters 7 ft.

$$

PKZ181-211345-
North and West of Nunivak Island-
341 PM AKST Mon Feb 20 2023

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...SE wind 25 kt increasing to 40 kt after midnight.  Snow
and rain.
.TUE...SE wind 45 kt. Snow and rain.
.TUE NIGHT...SW wind 40 kt becoming S 25 kt after midnight. Rain and
snow.
.WED...S wind 30 kt.
.WED NIGHT...S wind 40 kt.
.THU...SW wind 35 kt.
.FRI...SW wind 15 kt.
.SAT...W wind 15 kt.

$$

PKZ185-211345-
Saint Matthew Island Waters-
341 PM AKST Mon Feb 20 2023

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...E wind 30 kt increasing to 40 kt after midnight. Seas
in ice free waters 8 ft building to 13 ft after midnight. Snow and 
rain.
.TUE...SE wind 45 kt E of Saint Matthew Island... SE 40 kt W of
Saint Matthew Island. Seas in ice free waters 17 ft. Rain and snow.
.TUE NIGHT...SW wind 45 kt becoming S 30 kt after midnight. Seas
in ice free waters 21 ft. Snow and rain.
.WED...S wind 40 kt. Seas in ice free waters 20 ft.
.WED NIGHT...SW wind 40 kt. Seas in ice free waters 20 ft.
.THU...SW wind 35 kt. Seas in ice free waters 19 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 10 ft.
.SAT...NW wind 15 kt. Seas in ice free waters 10 ft.

$$

856 
FZAK52 PAFC 211302
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
402 AM AKST Tue Feb 21 2023

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.

PKZ199-220215-
402 AM AKST Tue Feb 21 2023
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 974 mb low 200 mm northeast of Shemya tracks to eastern Russia 
at 990 mb by Wed morning. A low complex tracks to the Aleutian 
Chain tonight. The first 972 mb low center 120 nm east of Shemya 
tonight moves 260 nm north of Shemya at 965 mb by Wed morning and 
then to eastern Russia by Thu morning. The second 970 mb low 
center 140 nm southwest of Shemya tonight moves 85 nm southeast of
Shemya at 972 mb by Wed morning and then dissipates over the 
Central Bering by Thu morning. 

$$

PKZ150-220215-
South of the AK Peninsula Sitkinak to Castle Cape-
402 AM AKST Tue Feb 21 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 20 kt. Seas 9 ft.
.TONIGHT...S wind 20 kt. Seas 8 ft.
.WED...S wind 15 kt. Seas 9 ft.
.WED NIGHT...S wind 25 kt. Seas 9 ft.
.THU...NW wind 20 kt. Seas 9 ft.
.FRI THROUGH SAT...W wind 30 kt. Seas 13 ft.

$$

PKZ155-220215-
South of the AK Peninsula Castle Cape to Cape Sarichef-
402 AM AKST Tue Feb 21 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...S wind 30 kt. Seas 13 ft.
.TONIGHT...S wind 20 kt. From the Shumagin Islands E, S wind 20 kt 
in the evening becoming variable 10 kt. Seas 12 ft.
.WED...S wind 25 kt except S 20 kt from the Shumagin Islands E.
Seas 12 ft. Rain.
.WED NIGHT...SW wind 25 kt. Seas 12 ft.
.THU...NW wind 20 kt. Seas 11 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.SAT...W wind 40 kt. Seas 17 ft.

$$

PKZ160-220215-
Bristol Bay-
402 AM AKST Tue Feb 21 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SE wind 25 kt. Seas in ice free waters 5 ft. Rain.
.TONIGHT...S wind 25 kt becoming SE 15 kt after midnight. Seas in
ice free waters 6 ft.
.WED...SE wind 25 kt. Seas in ice free waters 6 ft.
.WED NIGHT...S wind 25 kt. Seas in ice free waters 6 ft.
.THU...SW wind 20 kt. Seas in ice free waters 7 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas in ice free waters 6 ft.

$$

PKZ165-220215-
Port Heiden to Cape Sarichef-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...SE wind 40 kt. Seas 11 ft.
.TONIGHT...S wind 25 kt becoming SE 35 kt after midnight. From
Port Moller E, S wind 25 kt. Seas 11 ft.
.WED...S wind 40 kt except SE 30 kt from Port Moller E. Seas 10 ft.
.WED NIGHT...SW wind 30 kt. Seas 9 ft.
.THU THROUGH FRI...W wind 25 kt. Seas 12 ft.
.SAT...SW wind 35 kt. Seas 12 ft.

$$

PKZ170-220215-
Cape Sarichef to Nikolski Bering Side-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...S wind 45 kt diminishing to 35 kt in the afternoon. Seas 16 ft.
.TONIGHT...S wind 40 kt. Seas 14 ft.
.WED...S wind 40 kt diminishing to 30 kt in the afternoon. Seas 14 ft.
.WED NIGHT...SW wind 30 kt. Seas 13 ft.
.THU...SW wind 25 kt. Seas 15 ft.
.FRI...SW wind 30 kt. Seas 14 ft.
.SAT...SW wind 40 kt. Seas 22 ft.

$$

PKZ171-220215-
Unalaska Bay-
402 AM AKST Tue Feb 21 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...S wind 30 kt diminishing to 20 kt in the afternoon. Gusts to
45 kt in the morning. Seas 4 ft. Rain showers.
.TONIGHT...S wind 25 kt. Seas 4 ft. Rain.
.WED...S wind 25 kt. Seas 4 ft.
.WED NIGHT...SW wind 10 kt. Seas 2 ft.
.THU...SW wind 10 kt. Seas 2 ft.
.FRI...SW wind 20 kt. Seas 3 ft.
.SAT...SW wind 30 kt. Seas 5 ft.

$$

PKZ172-220215-
Cape Sarichef to Nikolski Pacific Side-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 35 kt. Seas 18 ft.
.TONIGHT...S wind 35 kt. Seas 16 ft.
.WED...S wind 30 kt. Seas 15 ft.
.WED NIGHT...SW wind 25 kt. Seas 14 ft.
.THU...NW wind 20 kt. Seas 14 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.SAT...SW wind 35 kt. Seas 23 ft.

$$

PKZ173-220215-
Nikolski to Seguam Island Bering Side-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...S wind 45 kt diminishing to 30 kt in the afternoon. Seas
25 ft subsiding to 19 ft in the afternoon.
.TONIGHT...SE wind 40 kt. Seas 18 ft. Rain.
.WED...S wind 35 kt. Seas 16 ft. Rain.
.WED NIGHT...SW wind 35 kt. Seas 14 ft.
.THU...SW wind 25 kt. Seas 14 ft.
.FRI...SW wind 30 kt. Seas 17 ft.
.SAT...SW wind 40 kt. Seas 26 ft.

$$

PKZ174-220215-
Nikolski to Seguam Island Pacific Side-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 40 kt diminishing to 25 kt in the afternoon. Seas 26 ft.
.TONIGHT...SE wind 40 kt. Seas 20 ft.
.WED...S wind 30 kt. Seas 19 ft.
.WED NIGHT...SW wind 30 kt. Seas 16 ft.
.THU...W wind 25 kt. Seas 17 ft.
.FRI...SW wind 35 kt. Seas 18 ft.
.SAT...SW wind 35 kt. Seas 24 ft.

$$

PKZ175-220215-
Seguam Island to Adak Bering Side-
402 AM AKST Tue Feb 21 2023

...STORM WARNING TODAY...

.TODAY...SW wind 50 kt becoming S 30 kt in the afternoon. Gusts to 65
kt in the morning. Seas 22 ft subsiding to 15 ft in the afternoon. Rain.
.TONIGHT...SE wind 40 kt. Seas 13 ft. Rain.
.WED...S wind 40 kt. Seas 14 ft.
.WED NIGHT...SW wind 40 kt. Seas 16 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.FRI...SW wind 40 kt. Seas 20 ft.
.SAT...SW wind 40 kt. Seas 26 ft.

$$

PKZ176-220215-
Seguam Island to Adak Pacific Side-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...SW wind 40 kt becoming S 30 kt in the afternoon. Seas 29
ft subsiding to 22 ft in the afternoon. Rain.
.TONIGHT...S wind 45 kt. Seas 21 ft. Rain.
.WED...S wind 35 kt. Seas 20 ft.
.WED NIGHT...SW wind 35 kt. Seas 20 ft.
.THU...W wind 25 kt. Seas 17 ft.
.FRI THROUGH SAT...SW wind 35 kt. Seas 22 ft.

$$

PKZ177-220215-
Adak to Kiska-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...SW wind 45 kt becoming SE 30 kt in the afternoon. Bering
side, seas 20 ft subsiding to 15 ft in the afternoon. Pac side,
seas 27 ft subsiding to 20 ft in the afternoon. Rain.
.TONIGHT...S wind 40 kt. Seas 21 ft.
.WED...S wind 45 kt. Seas 24 ft.
.WED NIGHT...SW wind 35 kt. Seas 22 ft.
.THU...SW wind 30 kt. Seas 13 ft.
.FRI THROUGH SAT...S wind 40 kt. Seas 22 ft.

$$

PKZ178-220215-
Kiska to Attu-
402 AM AKST Tue Feb 21 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...W wind 30 kt becoming E in the afternoon. Seas 16 ft.
Rain and snow.
.TONIGHT...S wind 40 kt...except NE wind 30 W of Shemya. Seas 17 ft.
Rain and snow.
.WED...NW wind 40 kt diminishing to 25 kt in the afternoon. Seas
18 ft Bering side...24 ft Pac side.
.WED NIGHT...SW wind 25 kt. Seas 16 ft.
.THU...SW wind 30 kt. Seas 14 ft.
.FRI THROUGH SAT...S wind 35 kt. Seas 21 ft.

$$

PKZ179-220215-
Pribilof Islands Near Shore Waters-
402 AM AKST Tue Feb 21 2023

...STORM WARNING TODAY...

.TODAY...S wind 50 kt. Gusts to 65 kt. Seas 26 ft. Rain.
.TONIGHT...S wind 30 kt becoming SE 40 kt after midnight. Seas
21 ft. Rain.
.WED...S wind 40 kt diminishing to 30 kt in the afternoon. Seas
18 ft. Rain.
.WED NIGHT...SW wind 40 kt. Seas 19 ft.
.THU...SW wind 25 kt. Seas 17 ft.
.FRI...SW wind 25 kt. Seas 12 ft.
.SAT...SW wind 30 kt. Seas 15 ft.

$$

PKZ180-220215-
Kuskokwim Delta and Etolin Strait-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...SE wind 40 kt. Seas in ice free waters 7 ft building to
11 ft in the afternoon. Snow.
.TONIGHT...S wind 35 kt. Seas in ice free waters 11 ft. Rain.
.WED...SE wind 35 kt. Seas in ice free waters 10 ft. Rain.
.WED NIGHT...S wind 30 kt. Seas in ice free waters 9 ft.
.THU...SW wind 25 kt. Seas in ice free waters 9 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 6 ft.
.SAT...SE wind 20 kt. Seas in ice free waters 7 ft.

$$

PKZ181-220215-
North and West of Nunivak Island-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...S wind 45 kt. Snow and rain.
.TONIGHT...SW wind 40 kt becoming S 30 kt after midnight. Snow.
.WED...S wind 35 kt. Rain.
.WED NIGHT...S wind 30 kt.
.THU...SW wind 30 kt.
.FRI...SW wind 20 kt.
.SAT...N wind 15 kt.

$$

PKZ185-220215-
Saint Matthew Island Waters-
402 AM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...S wind 45 kt. Seas in ice free waters 18 ft. Rain showers
and snow showers.
.TONIGHT...SW wind 40 kt becoming SE 30 kt after midnight. Seas in
ice free waters 21 ft. Snow.
.WED...S wind 35 kt E of Saint Matthew Island...S 40 kt W of Saint
Matthew Island. Seas in ice free waters 15 ft building to 20 ft in
the afternoon.
.WED NIGHT...SW wind 40 kt. Seas in ice free waters 23 ft.
.THU...SW wind 35 kt. Seas in ice free waters 19 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 11 ft.
.SAT...NW wind 20 kt. Seas in ice free waters 10 ft.

$$

454 
FZAK52 PAFC 220019
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
319 PM AKST Tue Feb 21 2023

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.

PKZ199-221330-
319 PM AKST Tue Feb 21 2023
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 979 mb low 300 nm West of St Matthew Island moves into the 
Chukchi Sea at 992 mb for Wed afternoon. A 978 mb low 190 nm South
of Attu moves to 85 nm North of St Paul Island at 1001 mb and 
dissipates Thu morning. A 981 mb low 190 nm South of Adak moves 
into the Chukchi Sea at 979 mb by Thu afternoon.

$$

PKZ150-221330-
South of the AK Peninsula Sitkinak to Castle Cape-
319 PM AKST Tue Feb 21 2023

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

.TONIGHT...S wind 20 kt. Seas 9 ft.
.WED...SE wind 15 kt. Seas 9 ft.
.WED NIGHT...SW wind 25 kt. Seas 9 ft. Rain showers.
.THU...W wind 20 kt. Seas 9 ft.
.THU NIGHT...NW wind 15 kt. Seas 9 ft.
.FRI THROUGH SUN...NW wind 30 kt. Seas 13 ft.

$$

PKZ155-221330-
South of the AK Peninsula Castle Cape to Cape Sarichef-
319 PM AKST Tue Feb 21 2023

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

.TONIGHT...SE wind 20 kt. From the Shumagin Islands E, S wind 20
kt in the evening becoming variable 10 kt. Seas 12 ft.
.WED...S wind 25 kt except S 20 kt from the Shumagin Islands E.
Seas 12 ft. Rain.
.WED NIGHT...S wind 25 kt. Seas 12 ft. Rain showers.
.THU...W wind 20 kt. Seas 11 ft.
.THU NIGHT...NW wind 15 kt. Seas 10 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.SAT...W wind 40 kt. Seas 17 ft.
.SUN...W wind 35 kt. Seas 19 ft.

$$

PKZ160-221330-
Bristol Bay-
319 PM AKST Tue Feb 21 2023

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

.TONIGHT...S wind 25 kt becoming SE 15 kt after midnight. Seas in
ice free waters 6 ft.
.WED...SE wind 25 kt. Seas in ice free waters 5 ft. Rain showers.
.WED NIGHT...SE wind 25 kt. Seas in ice free waters 6 ft.
.THU...SW wind 20 kt. Seas in ice free waters 5 ft.
.THU NIGHT...W wind 15 kt. Seas in ice free waters 6 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas in ice free waters 6 ft.
.SUN...NW wind 20 kt. Seas in ice free waters 8 ft.

$$

PKZ165-221330-
Port Heiden to Cape Sarichef-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...S wind 25 kt becoming SE 35 kt after midnight. From
Port Moller E, SE wind 25 kt. Seas 10 ft.
.WED...SE wind 35 kt. Seas 10 ft.
.WED NIGHT...S wind 25 kt. Seas 9 ft.
.THU...SW wind 25 kt. Seas 11 ft.
.THU NIGHT...W wind 15 kt. Seas 10 ft.
.FRI...W wind 25 kt. Seas 10 ft.
.SAT...SW wind 35 kt. Seas 12 ft.
.SUN...SW wind 30 kt. Seas 17 ft.

$$

PKZ170-221330-
Cape Sarichef to Nikolski Bering Side-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...S wind 40 kt. Seas 14 ft.
.WED...S wind 40 kt diminishing to 30 kt in the afternoon. Seas
14 ft.
.WED NIGHT...SW wind 30 kt. Seas 12 ft.
.THU...SW wind 25 kt. Seas 13 ft.
.THU NIGHT...SW wind 20 kt. Seas 9 ft.
.FRI...SW wind 30 kt. Seas 14 ft.
.SAT...SW wind 40 kt. Seas 22 ft.
.SUN...SW wind 35 kt. Seas 18 ft.

$$

PKZ171-221330-
Unalaska Bay-
319 PM AKST Tue Feb 21 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...S wind 20 kt increasing to 30 kt after midnight. Seas
3 ft building to 5 ft after midnight.
.WED...S wind 25 kt. Seas 4 ft.
.WED NIGHT...SW wind 15 kt. Seas 2 ft.
.THU...SW wind 15 kt. Seas 2 ft.
.THU NIGHT...SW wind 10 kt. Seas 2 ft.
.FRI...SW wind 20 kt. Seas 3 ft.
.SAT...SW wind 30 kt. Seas 5 ft.
.SUN...SW wind 25 kt. Seas 4 ft.

$$

PKZ172-221330-
Cape Sarichef to Nikolski Pacific Side-
319 PM AKST Tue Feb 21 2023

...GALE WARNING TONIGHT...

.TONIGHT...S wind 35 kt. Seas 16 ft.
.WED...S wind 30 kt. Seas 16 ft.
.WED NIGHT...SW wind 25 kt. Seas 14 ft.
.THU AND THU NIGHT...W wind 20 kt. Seas 13 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.SAT THROUGH SUN...SW wind 35 kt. Seas 22 ft.

$$

PKZ173-221330-
Nikolski to Seguam Island Bering Side-
319 PM AKST Tue Feb 21 2023

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 40 kt. Seas 17 ft. Rain.
.WED...S wind 30 kt. Seas 16 ft. Rain.
.WED NIGHT...SW wind 30 kt. Seas 14 ft.
.THU AND THU NIGHT...SW wind 25 kt. Seas 12 ft.
.FRI...SW wind 30 kt. Seas 17 ft.
.SAT...SW wind 40 kt. Seas 26 ft.
.SUN...S wind 35 kt. Seas 17 ft.

$$

PKZ174-221330-
Nikolski to Seguam Island Pacific Side-
319 PM AKST Tue Feb 21 2023

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 40 kt. Seas 20 ft.
.WED...S wind 30 kt. Seas 19 ft.
.WED NIGHT...SW wind 30 kt. Seas 16 ft.
.THU...SW wind 20 kt. Seas 16 ft.
.THU NIGHT...W wind 25 kt. Seas 12 ft.
.FRI...SW wind 35 kt. Seas 18 ft.
.SAT THROUGH SUN...S wind 35 kt. Seas 24 ft.

$$

PKZ175-221330-
Seguam Island to Adak Bering Side-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SE wind 40 kt. Seas 13 ft. Rain.
.WED...S wind 40 kt. Seas 14 ft.
.WED NIGHT...SW wind 40 kt diminishing to 30 kt after midnight.
Seas 16 ft.
.THU AND THU NIGHT...W wind 30 kt. Seas 12 ft.
.FRI...SW wind 40 kt. Seas 20 ft.
.SAT...SW wind 40 kt. Seas 26 ft.
.SUN...S wind 35 kt. Seas 16 ft.

$$

PKZ176-221330-
Seguam Island to Adak Pacific Side-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...S wind 40 kt. Seas 21 ft. Rain.
.WED...SW wind 35 kt. Seas 20 ft.
.WED NIGHT...SW wind 35 kt. Seas 20 ft.
.THU...SW wind 30 kt. Seas 16 ft.
.THU NIGHT...W wind 25 kt. Seas 12 ft.
.FRI THROUGH SUN...S wind 35 kt. Seas 23 ft.

$$

PKZ177-221330-
Adak to Kiska-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...S wind 45 kt. Seas 20 ft. Snow.
.WED...SW wind 45 kt. Seas 25 ft.
.WED NIGHT...W wind 35 kt becoming SW 25 kt after midnight. Seas
22 ft subsiding to 16 ft after midnight.
.THU AND THU NIGHT...SW wind 30 kt. Seas 14 ft.
.FRI THROUGH SUN...S wind 40 kt. Seas 22 ft.

$$

PKZ178-221330-
Kiska to Attu-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...E wind 40 kt becoming S after midnight. Seas 14 ft
building to 19 ft after midnight. Rain and snow.
.WED...NW wind 35 kt. Seas 17 ft Bering side... 23 ft Pacific side. 
Rain showers.
.WED NIGHT...W wind 20 kt. Seas 15 ft.
.THU AND THU NIGHT...SW wind 30 kt. Seas 14 ft.
.FRI THROUGH SUN...S wind 35 kt. Seas 21 ft.

$$

PKZ179-221330-
Pribilof Islands Near Shore Waters-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...S wind 30 kt becoming SE 40 kt after midnight. Seas
21 ft. Rain.
.WED...S wind 35 kt diminishing to 25 kt in the afternoon. Seas
17 ft.
.WED NIGHT...S wind 35 kt. Seas 19 ft.
.THU...SW wind 20 kt. Seas 17 ft.
.THU NIGHT...SW wind 25 kt. Seas 12 ft.
.FRI...SW wind 25 kt. Seas 12 ft.
.SAT...SW wind 30 kt. Seas 15 ft.
.SUN...S wind 30 kt. Seas 21 ft.

$$

PKZ180-221330-
Kuskokwim Delta and Etolin Strait-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...S wind 35 kt. Seas in ice free waters 11 ft. Rain.
.WED...S wind 35 kt. Seas in ice free waters 10 ft. Rain.
.WED NIGHT...SW wind 30 kt. Seas in ice free waters 10 ft.
.THU...SW wind 25 kt. Seas in ice free waters 9 ft.
.THU NIGHT...SW wind 15 kt. Seas in ice free waters 8 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 6 ft.
.SAT...SE wind 20 kt. Seas in ice free waters 7 ft.
.SUN...SW wind 25 kt. Seas in ice free waters 11 ft.

$$

PKZ181-221330-
North and West of Nunivak Island-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 40 kt becoming S 30 kt after midnight. Snow.
.WED...S wind 35 kt. Rain.
.WED NIGHT...SW wind 35 kt.
.THU...SW wind 25 kt.
.THU NIGHT...S wind 15 kt.
.FRI...SW wind 20 kt.
.SAT...N wind 15 kt.
.SUN...SE wind 25 kt.

$$

PKZ185-221330-
Saint Matthew Island Waters-
319 PM AKST Tue Feb 21 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 45 kt becoming SE 30 kt after midnight. Seas in
ice free waters 22 ft. Snow.
.WED...S wind 35 kt E of Saint Matthew Island...S 40 kt W of Saint
Matthew Island. Seas in ice free waters 19 ft. Snow showers.
.WED NIGHT...SW wind 40 kt. Seas in ice free waters 22 ft.
.THU...SW wind 30 kt. Seas in ice free waters 18 ft.
.THU NIGHT...SW wind 20 kt. Seas in ice free waters 13 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 11 ft.
.SAT...NW wind 20 kt. Seas in ice free waters 10 ft.
.SUN...SE wind 25 kt. Seas in ice free waters 12 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
440 PM AKST Sun Feb 19 2023

.ANALYSIS AND UPPER LEVELS...

Blocked ridge over the Pacific has nudged up into Alaska this
morning. Areas of fog and low stratus appeared in different
locations across the mainland, some producing enough moisture for
snow flurries and freezing drizzle. Fog is also observed in the
Middle Kuskokwim and the Kuskokwim Delta. A fast moving shortwave
is riding up along the western side of the ridge. This is
partially tethered to the shortwave spinning off a western Bering
low. While the low is skirting that western edge of the Bering,
that shortwave is moving snowfall through St Paul this morning. It
appears to be a brief burst of precipitation. Cold convective
cumulus trails behind though.

&&

.MODEL DISCUSSION...

Consensus on the synoptic level is good. Resolving the embedded
shortwaves, especially across the Bering Sea and for features that
are riding along the western periphery of the ridge over the
Pacific are more uncertain. Some of the challenges for the short
term are deciphering the potential for fog for various locations
across the Mainland and wind, in terms of magnitude and impacts
over the next few days. As warmer air continues to advect under
southwesterly flow into Alaska, the transition in precipitation
type could pose challenge in some areas over Southwestern Alaska
for the forecast this week.

&&

.AVIATION...
PANC...Improvement to VFR is anticipated this afternoon.
Reduction to MVFR ceilings and visibility is likely to return
after dark and last until at least sunrise. IFR and LIFR is
possible in the morning. Light winds are likely to prevail.

&&

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

Lingering weak low pressure exists over the Gulf of Alaska this
evening. A North Pacific low tracks south of the Gulf towards the
Southeast Panhandle through Monday. Winds across the Gulf of
Alaska will increase to widespread small craft, with areas of gale
force winds being pulled through some of the gaps, including
Resurrection Bay, Passage Canal/Prince William Sound, and out of
the Copper River Delta, on Monday. Winds will also be increased
through the Barren Islands.

A building ridge will keep cool and dry conditions across
Southcentral over the next couple of days. Cold air advection will
drift out of the Interior down into Southcentral. Anticipate winds
to ramp in areas along the coast, mainly Seward, Valdez/Thompson
Pass, and Whitter/Portage through Monday night. Low clouds and
periods of fog are likely again overnight tonight and into Monday
morning along the western Kenai Peninsula, spilling north across
western Anchorage into the Mat-Su Valley.

&&

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

Quieter weather is in store heading into early next week as a
ridge of high pressure from the eastern Bering Sea moves overhead.
Low stratus and fog trapped underneath the ridge returns
overnight tonight, with conditions expected to improve Monday
morning. Meanwhile, a couple of shortwaves waves will briefly
bring light snow showers to the Kuskokwim Delta and northern
Bristol Bay, while a snow/rain mix to the Alaska Peninsula on
Monday.

For the rest of the workweek, an active weather pattern will get
underway as a series of storm systems impacts western Alaska. The
first system is associated with a North Pacific low approaching
from the Bering into the Chukchi Sea early Tuesday. Temperatures
are expected to climb into the mid to upper 30s as far north as
the Lower Kuskokwim Valley as moderate southerly winds move into
the region. Most of the precipitation will stay to the north, but
the Kuskokwim Delta and Bristol Bay will initially start out as
snow in the morning. By mid-afternoon, warmer temperatures at the
surface will help transition to a wintry mix and then all rain for
the rest of the region. However, there is some uncertainty about
precipitation type timing and transition.

After this system pushes northward, the next warmer system
arrives shortly afterwards on Wednesday. Precipitation type is
likely to be predominately be rain as the atmospheric column of
air warms above the surface for the entire forecast area. Stay
tuned for further updates.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 to 3: Tonight
through Wednesday)...

A trough extending from the Kamchatka Peninsula to the western
Bering Sea will remain anchored through Monday. A low pressure
system pushes northward tonight, bringing precipitation and gales
along the Aleutian Chain and Pribilof Islands.

A strong North Pacific low is expected to approach the western
Aleutians early Monday. The leading frontal boundary will
overspread the western Aleutians by Monday afternoon, bringing
gusty southerly winds, elevated seas, and heavy precipitation.
There is moderate to high confidence for widespread gale force
winds, with localized areas of storm force winds between Monday
and Tuesday morning. As low lifts into the western Bering Sea, the
strongest core of the winds may shift to the west-southwest,
thereby producing a terrain channeling effect for the central
Aleutians (including Adak and Atka). There is also the potential
for gusts to reach hurricane force during that timeframe as some
colder air wraps around the low. A High Wind Watch is in effect
for the region from late Monday night to Tuesday morning.
Precipitation will initially start as snow followed by moderate to
heavy rain as warmer air surges across the Aleutians.

As the low lifts northward on Tuesday, the Pribilofs can see
increasing southerly gales to storm force winds and precipitation
as well. Conditions are expected to improve briefly on Tuesday
followed by a second system arriving midweek. There remains some
uncertainty with the timing and track with the second system, so
stay tuned for further updates.

&&

.LONG TERM FORECAST (Days 4 through 7: Thursday through
Sunday)...

A more marked pattern change towards much more mild and wetter
conditions earlier in the week will be nearing it's end by the
beginning of the outlook period on Thursday. By this time, models
are in reasonable agreement that the strong longwave ridge axis
extending into Mainland Alaska will begin to flatten out and begin
to retreat southeast as successive shortwaves ride over the ridge
from the Bering and help break down the ridge in place. This
should shift the deep fetch of southwest flow and the associated
moisture tap south towards the Gulf as a briefly more zonal
pattern takes shape through Friday, with an effective cold front
progressing across the Southwest into Southcentral, changing any
falling precipitation solidly over to snow. A marked cooling and
drying trend should continue into the weekend as a broad upper
trough shifts from the eastern Bering towards the Gulf and as
renewed longwave ridging develops upstream across the Bering and
Aleutians. Much of the region out west will remain fairly active,
however, with a series of lows likely to track into the
central/western Bering around the periphery of the flat ridge
gradually amplifying with time. The latest global model solutions
are hinting at perhaps another much larger and stronger low,
potentially storm force, entering the western Bering late on
Sunday.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...High Wind Watch 187.
MARINE...Gale 130-132 155 165 172 177 180-185.
		 Storm 170 173-176 179.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...VR
SOUTHCENTRAL ALASKA...KM
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MF
LONG TERM...AS