Storm Warning 57, NWS Anchorage, AK

093 
FZAK52 PAFC 271224
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
324 AM AKST Mon Feb 27 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.

PKZ199-280115-
324 AM AKST Mon Feb 27 2023
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A front extending from the Western Aleutians to the Pribilof
Islands this moring will push north and strengthen through the
day. It's parent low over Shemya at 977 mb will deepen to 957 mb
125 nm SW of St. Matthew Island Tuesday morning. The low will 
then move into the Bering Strait at 965 mb Wednesday morning.

$$

PKZ150-280115-
South of the AK Peninsula Sitkinak to Castle Cape-
324 AM AKST Mon Feb 27 2023

...GALE WARNING TUESDAY...

.TODAY...N wind 15 kt becoming E in the afternoon. Seas 9 ft.
.TONIGHT...SE wind 30 kt. Seas 10 ft. Rain and snow.
.TUE...S wind 30 kt becoming SW 40 kt in the afternoon. Seas 16
ft. Rain.
.TUE NIGHT...W wind 45 kt. Seas 20 ft.
.WED...W wind 45 kt. Seas 22 ft.
.THU...NW wind 40 kt. Seas 21 ft.
.FRI...NW wind 45 kt. Seas 18 ft.

$$

PKZ155-280115-
South of the AK Peninsula Castle Cape to Cape Sarichef-
324 AM AKST Mon Feb 27 2023

...GALE WARNING TONIGHT AND TUESDAY...

.TODAY...SE wind 20 kt becoming S 30 kt in the afternoon. Seas
11 ft. Rain and snow.
.TONIGHT...SW wind 35 kt except SW 30 kt from the Shumagin Islands
E. Seas 14 ft. Rain.
.TUE...SW wind 40 kt. Seas 18 ft. Rain.
.TUE NIGHT...W wind 40 kt. Seas 19 ft.
.WED...W wind 45 kt. Seas 21 ft.
.THU THROUGH FRI...W wind 35 kt. Seas 17 ft.

$$

PKZ160-280115-
Bristol Bay-
324 AM AKST Mon Feb 27 2023

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY...

.TODAY...NE wind 30 kt. Seas 5 ft. Extreme freezing spray at a rate 
of 4 cm per hour or greater may rapidly accumulate on vessels.
.TONIGHT...E wind 35 kt. Seas 7 ft. Extreme freezing spray at a rate
of 4 cm per hour or greater may rapidly accumulate on vessels. Snow.
.TUE...S wind 30 kt diminishing to 20 kt in the afternoon. Seas
7 ft. Heavy freezing spray.
.TUE NIGHT...W wind 35 kt. Seas 10 ft.
.WED...W wind 40 kt. Seas 15 ft.
.THU...NW wind 30 kt. Seas 14 ft.
.FRI...NW wind 30 kt. Seas 8 ft.

$$

PKZ165-280115-
Port Heiden to Cape Sarichef-
324 AM AKST Mon Feb 27 2023

...GALE WARNING TONIGHT...

.TODAY...SE wind 30 kt. Seas 8 ft. Freezing spray. Snow.
.TONIGHT...S wind 35 kt. Seas 10 ft. Rain and snow.
.TUE...SW wind 30 kt becoming W 20 kt in the afternoon. Seas 12 ft
building to 17 ft in the afternoon.
.TUE NIGHT...W wind 45 kt. Seas 18 ft.
.WED...W wind 45 kt. Seas 22 ft.
.THU...NW wind 30 kt. Seas 15 ft.
.FRI...W wind 30 kt. Seas 13 ft.

$$

PKZ170-280115-
Cape Sarichef to Nikolski Bering Side-
324 AM AKST Mon Feb 27 2023

...GALE WARNING TONIGHT...

.TODAY...S wind 30 kt. Seas 10 ft. Rain.
.TONIGHT...SW wind 35 kt. Seas 15 ft.
.TUE...SW wind 30 kt. Seas 20 ft.
.TUE NIGHT...W wind 50 kt. Seas 22 ft.
.WED...SW wind 45 kt. Seas 23 ft.
.THU...W wind 35 kt. Seas 19 ft.
.FRI...S wind 30 kt. Seas 18 ft.

$$

PKZ171-280115-
Unalaska Bay-
324 AM AKST Mon Feb 27 2023

...GALE WARNING TONIGHT...

.TODAY...S wind 25 kt. Seas 4 ft. Rain.
.TONIGHT...S wind 35 kt. Seas 4 ft. Rain.
.TUE...SW wind 20 kt. Seas 3 ft.
.TUE NIGHT...W wind 45 kt. Seas 7 ft.
.WED...SW wind 45 kt. Seas 7 ft.
.THU...W wind 30 kt. Seas 12 ft.
.FRI...S wind 20 kt. Seas 3 ft.

$$

PKZ172-280115-
Cape Sarichef to Nikolski Pacific Side-
324 AM AKST Mon Feb 27 2023

...GALE WARNING TONIGHT...

.TODAY...SW wind 30 kt. Seas 13 ft. Rain.
.TONIGHT...SW wind 40 kt. Seas 16 ft. Rain.
.TUE...W wind 25 kt. Seas 14 ft.
.TUE NIGHT...W wind 45 kt. Seas 19 ft.
.WED...W wind 50 kt. Seas 19 ft.
.THU...W wind 40 kt. Seas 21 ft.
.FRI...SW wind 30 kt. Seas 15 ft.

$$

PKZ173-280115-
Nikolski to Seguam Island Bering Side-
324 AM AKST Mon Feb 27 2023

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 35 kt. Seas 12 ft. Rain.
.TONIGHT...SW wind 45 kt. Seas 14 ft building to 20 ft after
midnight.
.TUE...W wind 30 kt. Seas 22 ft.
.TUE NIGHT...W wind 45 kt. Seas 20 ft.
.WED...SW wind 45 kt. Seas 21 ft.
.THU...W wind 40 kt. Seas 23 ft.
.FRI...S wind 35 kt. Seas 15 ft.

$$

PKZ174-280115-
Nikolski to Seguam Island Pacific Side-
324 AM AKST Mon Feb 27 2023

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 35 kt. Seas 16 ft. Rain.
.TONIGHT...SW wind 35 kt. Seas 16 ft.
.TUE...W wind 20 kt becoming NW 30 kt in the afternoon. Seas 17
ft.
.TUE NIGHT...W wind 45 kt. Seas 20 ft.
.WED...SW wind 40 kt. Seas 21 ft.
.THU...W wind 45 kt. Seas 24 ft.
.FRI...S wind 35 kt. Seas 13 ft.

$$

PKZ175-280115-
Seguam Island to Adak Bering Side-
324 AM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT...

.TODAY...SW wind 40 kt. Seas 12 ft. Rain.
.TONIGHT...SW wind 55 kt diminishing to 45 kt after midnight. Seas
24 ft.
.TUE...W wind 25 kt increasing to 35 kt in the afternoon. Seas
18 ft.
.TUE NIGHT...W wind 45 kt. Seas 18 ft.
.WED THROUGH THU...SW wind 40 kt. Seas 22 ft.
.FRI...SE wind 35 kt. Seas 12 ft.

$$

PKZ176-280115-
Seguam Island to Adak Pacific Side-
324 AM AKST Mon Feb 27 2023

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 35 kt. Seas 16 ft. Rain.
.TONIGHT...SW wind 40 kt. Seas 19 ft.
.TUE...NW wind 20 kt becoming W 30 kt in the afternoon. Seas 16
ft.
.TUE NIGHT...W wind 45 kt. Seas 19 ft.
.WED THROUGH THU...W wind 40 kt. Seas 23 ft.
.FRI...SE wind 35 kt. Seas 12 ft.

$$

PKZ177-280115-
Adak to Kiska-
324 AM AKST Mon Feb 27 2023

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt increasing to 60 kt in the afternoon. Seas
17 ft building to 25 ft in the afternoon.
.TONIGHT...SW wind 55 kt becoming W 35 kt after midnight. Seas 28
ft subsiding to 20 ft after midnight.
.TUE...W wind 30 kt increasing to 40 kt in the afternoon. Seas
16 ft. Snow showers.
.TUE NIGHT...W wind 40 kt. Seas 17 ft.
.WED...SW wind 45 kt. Seas 26 ft.
.THU...SW wind 40 kt. Seas 23 ft.
.FRI...SE wind 40 kt. Seas 15 ft.

$$

PKZ178-280115-
Kiska to Attu-
324 AM AKST Mon Feb 27 2023

...STORM WARNING THROUGH TONIGHT...

.TODAY...W wind 55 kt. Seas 26 ft. Snow and rain.
.TONIGHT...NW wind 50 kt diminishing to 35 kt after midnight. Seas
22 ft.
.TUE...W wind 30 kt increasing to 40 kt in the afternoon. Seas
16 ft. Freezing spray. Snow showers.
.TUE NIGHT...W wind 40 kt. Seas 17 ft.
.WED...SW wind 50 kt. Seas 23 ft.
.THU THROUGH FRI...S wind 50 kt. Seas 24 ft.

$$

PKZ179-280115-
Pribilof Islands Near Shore Waters-
324 AM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT AND TUESDAY...

.TODAY...SE wind 40 kt. Seas 13 ft. Freezing spray. Snow.
.TONIGHT...SW wind 35 kt increasing to 50 kt after midnight. Seas
13 ft building to 23 ft after midnight. Rain.
.TUE...SW wind 50 kt. Seas 28 ft.
.TUE NIGHT...W wind 45 kt. Seas 22 ft.
.WED...W wind 45 kt. Seas 22 ft.
.THU...NW wind 30 kt. Seas 15 ft.
.FRI...S wind 30 kt. Seas 17 ft.

$$

PKZ180-280115-
Kuskokwim Delta and Etolin Strait-
324 AM AKST Mon Feb 27 2023

...GALE WARNING THROUGH TUESDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY...

.TODAY...E wind 30 kt increasing to 40 kt in the afternoon. Seas
10 ft. Extreme freezing spray at a rate of 4 cm per hour or greater 
may rapidly accumulate on vessels.
.TONIGHT...E wind 45 kt. Seas 15 ft. Extreme freezing spray at a 
rate of 4 cm per hour or greater may rapidly accumulate on vessels
before midnight. Snow.
.TUE...S wind 45 kt. Seas 17 ft. Heavy freezing spray.
.TUE NIGHT...W wind 40 kt. Seas 17 ft.
.WED...W wind 40 kt. Seas 17 ft.
.THU...NW wind 30 kt. Seas 12 ft.
.FRI...SW wind 25 kt. Seas 9 ft.

$$

PKZ181-280115-
North and West of Nunivak Island-
324 AM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY...

.TODAY...E wind 30 kt increasing to 45 kt in the afternoon. Seas
in ice free waters 7 ft. Extreme freezing spray at a rate of 4 cm 
per hour or greater may rapidly accumulate on vessels. Snow.
.TONIGHT...E wind 50 kt. Seas in ice free waters 11 ft. Extreme 
freezing spray at a rate of 4 cm per hour or greater may rapidly 
accumulate on vessels before midnight. Snow.
.TUE...SW wind 45 kt. Seas in ice free waters 12 ft. Heavy
freezing spray. Snow.
.TUE NIGHT...SW wind 40 kt. Seas in ice free waters 12 ft.
.WED...W wind 40 kt. Seas in ice free waters 10 ft.
.THU...W wind 20 kt. Seas in ice free waters 4 ft.
.FRI...SE wind 30 kt. Seas in ice free waters 8 ft.

$$

PKZ185-280115-
Saint Matthew Island Waters-
324 AM AKST Mon Feb 27 2023

...STORM WARNING THROUGH TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TONIGHT...

.TODAY...E wind 45 kt increasing to 55 kt in the afternoon. Seas
in ice free waters 16 ft building to 23 ft in the afternoon. Extreme
freezing spray at a rate of 4 cm per hour or greater may rapidly 
accumulate on vessels. Snow.
.TONIGHT...SE wind 55 kt. Seas in ice free waters 22 ft subsiding
to 14 ft after midnight. Extreme freezing spray at a rate of 4 cm 
per hour or greater may rapidly accumulate on vessels. Snow.
.TUE...E of Saint Matthew Island, S wind 40 kt. W of Saint Matthew
Island, NW wind 30 kt increasing to 40 kt in the afternoon. Seas
in ice free waters 17 ft. Freezing spray. Snow.
.TUE NIGHT...NW wind 40 kt. Seas in ice free waters 17 ft.
.WED...NW wind 35 kt. Seas in ice free waters 11 ft.
.THU...W wind 30 kt. Seas in ice free waters 10 ft.
.FRI...SE wind 40 kt. Seas in ice free waters 32 ft.

$$

312 
FZAK52 PAFC 280057
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
357 PM AKST Mon Feb 27 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.

PKZ199-281330-
357 PM AKST Mon Feb 27 2023
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A front extending from the Central and Eastern Aleutians to the 
Pribilof Islands this afternoon will push north to the Southwest 
coast through Tuesday morning. Its 962 mb parent low 200 nm north 
of Shemya tracks to St. Matthew Island at 957 mb on Tuesday 
morning. The low will then move to Norton Sound at 960 mb 
Wednesday morning before dissipating there Wednesday afternoon. A 
front tracks across the Western Aleutians Wednesday morning 
through Wednesday afternoon.

$$

PKZ150-281330-
South of the AK Peninsula Sitkinak to Castle Cape-
357 PM AKST Mon Feb 27 2023

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

.TONIGHT...SE wind 30 kt. Seas 10 ft. Rain and snow.
.TUE...S wind 30 kt becoming SW 40 kt in the afternoon. Seas 16 ft. 
Rain.
.TUE NIGHT...W wind 45 kt. Seas 20 ft. Rain.
.WED AND WED NIGHT...W wind 45 kt. Seas 22 ft.
.THU...W wind 40 kt. Seas 19 ft.
.FRI...NW wind 45 kt. Seas 18 ft.
.SAT...SW wind 30 kt. Seas 10 ft.

$$

PKZ155-281330-
South of the AK Peninsula Castle Cape to Cape Sarichef-
357 PM AKST Mon Feb 27 2023

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...SW wind 35 kt except SW 30 kt from the Shumagin Islands
E. Seas 14 ft. Rain.
.TUE...SW wind 40 kt. Seas 18 ft. Rain.
.TUE NIGHT...W wind 40 kt. Seas 19 ft.
.WED AND WED NIGHT...W wind 45 kt. Seas 21 ft.
.THU THROUGH FRI...W wind 35 kt. Seas 17 ft.
.SAT...S wind 30 kt. Seas 16 ft.

$$

PKZ160-281330-
Bristol Bay-
357 PM AKST Mon Feb 27 2023

...GALE WARNING TONIGHT AND TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY...

.TONIGHT...E wind 35 kt. Seas 7 ft. Heavy freezing spray.
.TUE...S wind 30 kt diminishing to 20 kt in the afternoon. Seas
7 ft. Heavy freezing spray.
.TUE NIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
10 ft. Freezing spray.
.WED AND WED NIGHT...W wind 40 kt. Seas 15 ft.
.THU THROUGH FRI...NW wind 30 kt. Seas 10 ft.
.SAT...E wind 25 kt. Seas 6 ft.

$$

PKZ165-281330-
Port Heiden to Cape Sarichef-
357 PM AKST Mon Feb 27 2023

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

.TONIGHT...S wind 35 kt. Seas 10 ft. Rain and snow.
.TUE...SW wind 30 kt becoming W 20 kt in the afternoon. Seas 12 ft
building to 17 ft in the afternoon.
.TUE NIGHT...W wind 35 kt increasing to 45 kt after midnight. From
Port Moller E, W wind 35 kt. Seas 18 ft. Freezing spray. Snow
showers.
.WED AND WED NIGHT...W wind 45 kt. Seas 22 ft.
.THU THROUGH FRI...W wind 30 kt. Seas 13 ft.
.SAT...SE wind 30 kt. Seas 11 ft.

$$

PKZ170-281330-
Cape Sarichef to Nikolski Bering Side-
357 PM AKST Mon Feb 27 2023

...STORM WARNING TUESDAY NIGHT...

.TONIGHT...SW wind 35 kt. Seas 15 ft.
.TUE...SW wind 30 kt. Seas 20 ft.
.TUE NIGHT...W wind 40 kt increasing to 50 kt after midnight. Seas
22 ft. Snow showers.
.WED...W wind 45 kt. Seas 23 ft.
.WED NIGHT...SW wind 40 kt. Seas 22 ft.
.THU...W wind 40 kt. Seas 22 ft.
.FRI...S wind 30 kt. Seas 18 ft.
.SAT...SE wind 40 kt. Seas 14 ft.

$$

PKZ171-281330-
Unalaska Bay-
357 PM AKST Mon Feb 27 2023

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

.TONIGHT...S wind 35 kt. Seas 4 ft. Rain.
.TUE...SW wind 20 kt. Seas 3 ft.
.TUE NIGHT...W wind 35 kt increasing to 45 kt after midnight. Seas
7 ft. Snow showers.
.WED...W wind 45 kt. Seas 7 ft.
.WED NIGHT...SW wind 40 kt. Seas 6 ft.
.THU...W wind 35 kt. Seas 15 ft.
.FRI...S wind 20 kt. Seas 3 ft.
.SAT...SE wind 25 kt. Seas 4 ft.

$$

PKZ172-281330-
Cape Sarichef to Nikolski Pacific Side-
357 PM AKST Mon Feb 27 2023

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

.TONIGHT...SW wind 40 kt. Seas 16 ft. Rain.
.TUE...W wind 25 kt. Seas 14 ft.
.TUE NIGHT...NW wind 35 kt becoming W 45 kt after midnight. Seas
19 ft. Snow showers.
.WED...W wind 50 kt. Seas 19 ft.
.WED NIGHT...SW wind 40 kt. Seas 19 ft.
.THU...W wind 40 kt. Seas 22 ft.
.FRI...SW wind 30 kt. Seas 15 ft.
.SAT...SE wind 40 kt. Seas 24 ft.

$$

PKZ173-281330-
Nikolski to Seguam Island Bering Side-
357 PM AKST Mon Feb 27 2023

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

.TONIGHT...SW wind 45 kt. Seas 14 ft building to 20 ft after
midnight.
.TUE...W wind 30 kt. Seas 22 ft.
.TUE NIGHT...W wind 45 kt. Seas 20 ft. Snow showers.
.WED...W wind 45 kt. Seas 21 ft.
.WED NIGHT...SW wind 40 kt. Seas 18 ft.
.THU...W wind 45 kt. Seas 27 ft.
.FRI...S wind 35 kt. Seas 15 ft.
.SAT...SE wind 40 kt. Seas 19 ft.

$$

PKZ174-281330-
Nikolski to Seguam Island Pacific Side-
357 PM AKST Mon Feb 27 2023

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

.TONIGHT...SW wind 35 kt. Seas 16 ft.
.TUE...W wind 20 kt becoming NW 30 kt in the afternoon. Seas 17 ft.
.TUE NIGHT...W wind 35 kt increasing to 45 kt after midnight. Seas
20 ft. Snow showers.
.WED AND WED NIGHT...SW wind 40 kt. Seas 21 ft.
.THU...W wind 45 kt. Seas 25 ft.
.FRI...S wind 35 kt. Seas 13 ft.
.SAT...SE wind 40 kt. Seas 23 ft.

$$

PKZ175-281330-
Seguam Island to Adak Bering Side-
357 PM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT...

.TONIGHT...SW wind 55 kt diminishing to 45 kt after midnight. Seas
24 ft.
.TUE...W wind 25 kt increasing to 35 kt in the afternoon. Seas
18 ft.
.TUE NIGHT...W wind 45 kt. Seas 18 ft. Snow showers.
.WED...SW wind 40 kt. Seas 17 ft.
.WED NIGHT...SW wind 45 kt. Seas 23 ft.
.THU...W wind 45 kt. Seas 27 ft.
.FRI THROUGH SAT...SE wind 35 kt. Seas 14 ft.

$$

PKZ176-281330-
Seguam Island to Adak Pacific Side-
357 PM AKST Mon Feb 27 2023

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

.TONIGHT...SW wind 40 kt. Seas 19 ft.
.TUE...NW wind 20 kt becoming W 30 kt in the afternoon. Seas 16 ft.
.TUE NIGHT...W wind 45 kt. Seas 19 ft. Snow showers.
.WED AND WED NIGHT...SW wind 40 kt. Seas 22 ft.
.THU...W wind 40 kt. Seas 20 ft.
.FRI...SE wind 35 kt. Seas 12 ft.
.SAT...SE wind 35 kt. Seas 24 ft.

$$

PKZ177-281330-
Adak to Kiska-
357 PM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT...

.TONIGHT...SW wind 55 kt becoming W 35 kt after midnight. Seas 28 ft
subsiding to 20 ft after midnight.
.TUE...W wind 30 kt increasing to 40 kt in the afternoon. Seas
16 ft. Snow showers.
.TUE NIGHT...W wind 40 kt. Seas 17 ft. Snow showers.
.WED...SW wind 45 kt. Seas 18 ft.
.WED NIGHT...SW wind 45 kt. Seas 26 ft.
.THU...SW wind 40 kt. Seas 21 ft.
.FRI...SE wind 40 kt. Seas 15 ft.
.SAT...W wind 30 kt. Seas 19 ft.

$$

PKZ178-281330-
Kiska to Attu-
357 PM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT...

.TONIGHT...NW wind 50 kt diminishing to 35 kt after midnight. Seas
22 ft.
.TUE...W wind 30 kt increasing to 40 kt in the afternoon. Seas
16 ft. Freezing spray. Snow showers.
.TUE NIGHT...W wind 40 kt. Seas 17 ft.
.WED...SW wind 50 kt. Seas 18 ft.
.WED NIGHT...W wind 50 kt. Seas 23 ft.
.THU THROUGH FRI...S wind 50 kt. Seas 24 ft.
.SAT...W wind 30 kt. Seas 16 ft.

$$

PKZ179-281330-
Pribilof Islands Near Shore Waters-
357 PM AKST Mon Feb 27 2023

...STORM WARNING THROUGH TUESDAY...

.TONIGHT...SW wind 35 kt increasing to 50 kt after midnight. Seas
13 ft building to 23 ft after midnight. Rain.
.TUE...SW wind 50 kt. Seas 28 ft.
.TUE NIGHT...W wind 45 kt. Seas 22 ft. Freezing spray. Widespread
snow showers.
.WED...W wind 45 kt. Seas 22 ft.
.WED NIGHT...W wind 40 kt. Seas 20 ft.
.THU...NW wind 25 kt. Seas 15 ft.
.FRI...S wind 30 kt. Seas 17 ft.
.SAT...SE wind 35 kt. Seas 20 ft.

$$

PKZ180-281330-
Kuskokwim Delta and Etolin Strait-
357 PM AKST Mon Feb 27 2023

...GALE WARNING THROUGH TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...E wind 45 kt. Seas 15 ft. Extreme freezing spray at a 
rate of 4 cm per hour or greater may rapidly accumulate on vessels. 
Snow.
.TUE...S wind 45 kt. Seas 17 ft. Heavy freezing spray.
.TUE NIGHT...SW wind 40 kt. Seas 17 ft. Heavy freezing spray.
.WED AND WED NIGHT...W wind 40 kt. Seas 17 ft.
.THU...NW wind 30 kt. Seas 10 ft.
.FRI...SW wind 25 kt. Seas 9 ft.
.SAT...SE wind 40 kt. Seas 13 ft.

$$

PKZ181-281330-
North and West of Nunivak Island-
357 PM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...E wind 50 kt. Seas in ice free waters 11 ft. Extreme 
freezing spray at a rate of 4 cm per hour or greater may rapidly 
accumulate on vessels. Snow.
.TUE...SW wind 45 kt. Seas in ice free waters 12 ft. Heavy
freezing spray. Snow.
.TUE NIGHT...SW wind 40 kt. Seas in ice free waters 12 ft. Extreme 
freezing spray at a rate of 4 cm per hour or greater may rapidly 
accumulate on vessels.
.WED...W wind 40 kt. Seas in ice free waters 10 ft.
.WED NIGHT...W wind 30 kt. Seas in ice free waters 6 ft.
.THU...NW wind 20 kt. Seas in ice free waters 4 ft.
.FRI...SE wind 30 kt. Seas in ice free waters 8 ft.
.SAT...SE wind 40 kt. Seas in ice free waters 9 ft.

$$

PKZ185-281330-
Saint Matthew Island Waters-
357 PM AKST Mon Feb 27 2023

...STORM WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND TUESDAY NIGHT...

.TONIGHT...SE wind 55 kt. Seas in ice free waters 22 ft subsiding
to 14 ft after midnight. Extreme freezing spray at a rate of 4 cm 
per hour or greater may rapidly accumulate on vessels. Snow.
.TUE...E of Saint Matthew Island, S wind 40 kt. W of Saint Matthew
Island, NW wind 30 kt increasing to 40 kt in the afternoon. Seas
in ice free waters 17 ft. Freezing spray. Snow.
.TUE NIGHT...W wind 40 kt. Seas in ice free waters 17 ft. Heavy
freezing spray. Snow.
.WED AND WED NIGHT...NW wind 35 kt. Seas in ice free waters 11 ft.
.THU...NW wind 30 kt. Seas in ice free waters 10 ft.
.FRI...SE wind 40 kt. Seas in ice free waters 32 ft.
.SAT...SE wind 35 kt. Seas in ice free waters 25 ft.

$$

508 
FZAK52 PAFC 281242
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
342 AM AKST Tue Feb 28 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.

PKZ199-010115-
342 AM AKST Tue Feb 28 2023
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 960 mb low 60 nm W of St. Matthew will move over the Y-K Delta
coast Wednesday morning. The low will move inland and dissipate 
Wednesday afternoon. A low near the Kamchatka Peninsula Wednesday 
morning will move to 250 nm W of St. Paul at 994 mb Thursday 
morning.

$$

PKZ150-010115-
South of the AK Peninsula Sitkinak to Castle Cape-
342 AM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TODAY...S wind 30 kt becoming SW 40 kt in the afternoon. Seas 13
ft building to 18 ft in the afternoon. Rain.
.TONIGHT...SW wind 40 kt becoming NW after midnight. Seas 19 ft. 
Rain.
.WED...W wind 50 kt. Seas 24 ft. Snow.
.WED NIGHT...W wind 50 kt. Seas 25 ft.
.THU THROUGH FRI...NW wind 40 kt. Seas 19 ft.
.SAT...W wind 25 kt. Seas 9 ft.

$$

PKZ155-010115-
South of the AK Peninsula Castle Cape to Cape Sarichef-
342 AM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TODAY...SW wind 40 kt. Seas 18 ft. Rain.
.TONIGHT...W wind 40 kt. Seas 19 ft. Rain.
.WED...W wind 50 kt. Seas 24 ft. Snow showers.
.WED NIGHT...W wind 45 kt. Seas 23 ft.
.THU...W wind 40 kt. Seas 19 ft.
.FRI...W wind 35 kt. Seas 16 ft.
.SAT...S wind 40 kt. Seas 12 ft.

$$

PKZ160-010115-
Bristol Bay-
342 AM AKST Tue Feb 28 2023

...GALE WARNING TONIGHT AND WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING WEDNESDAY...

.TODAY...S wind 30 kt diminishing to 20 kt in the afternoon. Seas
in ice free waters 9 ft.
.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
in ice free waters 10 ft.
.WED...W wind 35 kt increasing to 45 kt in the afternoon. Seas in
ice free waters 16 ft. Heavy freezing spray. Snow.
.WED NIGHT...W wind 45 kt. Seas in ice free waters 16 ft.
.THU THROUGH FRI...NW wind 30 kt. Seas in ice free waters 10 ft.
.SAT...SE wind 25 kt. Seas in ice free waters 5 ft.

$$

PKZ165-010115-
Port Heiden to Cape Sarichef-
342 AM AKST Tue Feb 28 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...SW wind 30 kt becoming W 20 kt in the afternoon. Seas
17 ft.
.TONIGHT...W wind 30 kt increasing to 45 kt after midnight. Seas
20 ft. Snow showers.
.WED...W wind 45 kt. Seas 24 ft. Freezing spray. Widespread snow
showers.
.WED NIGHT...W wind 45 kt. Seas 23 ft.
.THU...NW wind 30 kt. Seas 14 ft.
.FRI...W wind 30 kt. Seas 14 ft.
.SAT...SE wind 40 kt. Seas 11 ft.

$$

PKZ170-010115-
Cape Sarichef to Nikolski Bering Side-
342 AM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 21 ft.
.TONIGHT...W wind 45 kt. Seas 22 ft. Snow showers.
.WED...W wind 50 kt. Seas 23 ft. Snow showers.
.WED NIGHT...SW wind 35 kt. Seas 20 ft.
.THU...W wind 45 kt. Seas 26 ft.
.FRI...SW wind 30 kt. Seas 16 ft.
.SAT...SE wind 45 kt. Seas 16 ft.

$$

PKZ171-010115-
Unalaska Bay-
342 AM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TODAY...SW wind 20 kt. Seas 3 ft.
.TONIGHT...W wind 40 kt. Seas 6 ft. Snow showers.
.WED...W wind 50 kt. Seas 8 ft. Widespread snow showers.
.WED NIGHT...SW wind 35 kt. Seas 5 ft.
.THU...W wind 40 kt. Seas 10 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT...SE wind 30 kt. Seas 5 ft.

$$

PKZ172-010115-
Cape Sarichef to Nikolski Pacific Side-
342 AM AKST Tue Feb 28 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...W wind 25 kt. Seas 12 ft. Rain with snow.
.TONIGHT...W wind 40 kt. Seas 18 ft. Snow showers.
.WED...W wind 45 kt. Seas 22 ft. Snow showers.
.WED NIGHT...SW wind 40 kt. Seas 17 ft.
.THU...W wind 45 kt. Seas 23 ft.
.FRI...SW wind 25 kt. Seas 14 ft.
.SAT...SE wind 45 kt. Seas 25 ft.

$$

PKZ173-010115-
Nikolski to Seguam Island Bering Side-
342 AM AKST Tue Feb 28 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...W wind 30 kt. Seas 21 ft.
.TONIGHT...W wind 45 kt. Seas 20 ft. Snow showers.
.WED...W wind 40 kt. Seas 21 ft.
.WED NIGHT...SW wind 45 kt. Seas 17 ft.
.THU...W wind 50 kt. Seas 29 ft.
.FRI...S wind 30 kt. Seas 14 ft.
.SAT...SE wind 45 kt. Seas 24 ft.

$$

PKZ174-010115-
Nikolski to Seguam Island Pacific Side-
342 AM AKST Tue Feb 28 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...W wind 20 kt becoming NW 30 kt in the afternoon. Seas
16 ft.
.TONIGHT...W wind 35 kt increasing to 45 kt after midnight. Seas
19 ft. Snow showers.
.WED...W wind 45 kt diminishing to 35 kt in the afternoon. Seas
21 ft.
.WED NIGHT...SW wind 45 kt. Seas 19 ft.
.THU...W wind 45 kt. Seas 23 ft.
.FRI...S wind 30 kt. Seas 13 ft.
.SAT...SE wind 45 kt. Seas 28 ft.

$$

PKZ175-010115-
Seguam Island to Adak Bering Side-
342 AM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...W wind 25 kt increasing to 35 kt in the afternoon. Seas
16 ft.
.TONIGHT...W wind 45 kt. Seas 17 ft. Snow showers.
.WED...W wind 40 kt. Seas 17 ft.
.WED NIGHT...SW wind 50 kt. Seas 23 ft.
.THU...W wind 45 kt. Seas 26 ft.
.FRI...S wind 30 kt. Seas 11 ft.
.SAT...SE wind 40 kt. Seas 18 ft.

$$

PKZ176-010115-
Seguam Island to Adak Pacific Side-
342 AM AKST Tue Feb 28 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...NW wind 20 kt becoming W 30 kt in the afternoon. Seas
17 ft.
.TONIGHT...W wind 45 kt. Seas 18 ft. Snow showers.
.WED...W wind 40 kt becoming SW 30 kt in the afternoon. Seas 18
ft.
.WED NIGHT...SW wind 45 kt. Seas 20 ft.
.THU...W wind 40 kt. Seas 20 ft.
.FRI...SE wind 30 kt. Seas 12 ft.
.SAT...SE wind 45 kt. Seas 28 ft.

$$

PKZ177-010115-
Adak to Kiska-
342 AM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...W wind 30 kt increasing to 40 kt in the afternoon. Seas
16 ft.
.TONIGHT...W wind 40 kt. Seas 17 ft.
.WED...SW wind 30 kt becoming S 45 kt in the afternoon. Seas 16
ft. Rain.
.WED NIGHT...W wind 50 kt. Seas 23 ft.
.THU...SW wind 40 kt. Seas 20 ft.
.FRI...SE wind 35 kt. Seas 13 ft.
.SAT...N wind 35 kt. Seas 20 ft.

$$

PKZ178-010115-
Kiska to Attu-
342 AM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TODAY...W wind 30 kt increasing to 40 kt in the afternoon. Seas
16 ft. Freezing spray. Snow showers.
.TONIGHT...W wind 40 kt. Seas 17 ft. Freezing spray.
.WED...S wind 40 kt becoming SW 50 kt in the afternoon. Seas 19
ft. Snow and rain.
.WED NIGHT...W wind 50 kt. Seas 22 ft.
.THU THROUGH FRI...S wind 45 kt. Seas 20 ft.
.SAT...NW wind 35 kt. Seas 16 ft.

$$

PKZ179-010115-
Pribilof Islands Near Shore Waters-
342 AM AKST Tue Feb 28 2023

...STORM WARNING TODAY...
...HEAVY FREEZING SPRAY WARNING WEDNESDAY...

.TODAY...SW wind 50 kt. Gusts to 70 kt early. Seas 31 ft subsiding 
to 24 ft in the afternoon.
.TONIGHT...W wind 45 kt. Seas 22 ft. Freezing spray. Snow showers.
.WED...W wind 40 kt. Seas 20 ft. Heavy freezing spray. Snow.
.WED NIGHT...SW wind 25 kt. Seas 14 ft.
.THU...NW wind 30 kt. Seas 15 ft.
.FRI...S wind 30 kt. Seas 14 ft.
.SAT...SE wind 40 kt. Seas 21 ft.

$$

PKZ180-010115-
Kuskokwim Delta and Etolin Strait-
342 AM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND WEDNESDAY...

.TODAY...SW wind 45 kt except SW wind 30 kt S of Cape Newenham. Seas
in ice free waters 19 ft.
.TONIGHT...SW wind 40 kt. Seas in ice free waters 18 ft. Heavy
freezing spray.
.WED...W wind 45 kt. Seas in ice free waters 19 ft. Extreme freezing
spray at a rate of 4 cm per hour or greater may rapidly accumulate 
on vessels. Snow showers.
.WED NIGHT...NW wind 45 kt. Seas in ice free waters 18 ft.
.THU...N wind 30 kt. Seas in ice free waters 9 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 9 ft.
.SAT...S wind 40 kt. Seas in ice free waters 11 ft.

$$

PKZ181-010115-
North and West of Nunivak Island-
342 AM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...SW wind 45 kt.
.TONIGHT...SW wind 40 kt.
.WED...W wind 40 kt.
.WED NIGHT...NW wind 30 kt.
.THU...NW wind 15 kt.
.FRI...S wind 30 kt.
.SAT...S wind 35 kt.

$$

PKZ185-010115-
Saint Matthew Island Waters-
342 AM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY...

.TODAY...E of Saint Matthew Island, S wind 40 kt. W of Saint
Matthew Island, NW wind 30 kt increasing to 40 kt in the afternoon. 
Seas in ice free waters 17 ft. Heavy freezing spray. Snow.
.TONIGHT...W wind 40 kt. Seas in ice free waters 16 ft subsiding
to 11 ft after midnight. Extreme freezing spray at a rate of 4 cm 
per hour or greater may rapidly accumulate on vessels.
.WED...NW wind 40 kt E of Saint Matthew Island... NW 35 kt W of
Saint Matthew Island. Seas in ice free waters 11 ft. Extreme 
freezing spray at a rate of 4 cm per hour or greater may rapidly 
accumulate on vessels.
.WED NIGHT...N wind 25 kt. Seas in ice free waters 7 ft.
.THU...NW wind 30 kt. Seas in ice free waters 11 ft.
.FRI...SE wind 40 kt. Seas in ice free waters 24 ft.
.SAT...SE wind 35 kt. Seas in ice free waters 24 ft.

$$

149 
FZAK52 PAFC 010055
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
355 PM AKST Tue Feb 28 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.

PKZ199-011400-
355 PM AKST Tue Feb 28 2023
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 960 mb low 60 nm W of St. Matthew will move over the Y-K Delta 
coast Wednesday morning. The low will move inland and dissipate 
Wednesday afternoon. A low near the Kamchatka Peninsula Wednesday 
morning will move to 250 nm W of St. Paul at 994 mb Thursday morning 
and then exit the eastern Bering across the Alaska Peninsula at 1002 
mb by Thursday afternoon.

$$

PKZ150-011400-
South of the AK Peninsula Sitkinak to Castle Cape-
355 PM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 19 ft. Rain and snow.
.WED...W wind 50 kt. Seas 24 ft. Snow.
.WED NIGHT...W wind 50 kt. Seas 25 ft. Freezing spray.
.THU...W wind 40 kt. Seas 20 ft.
.THU NIGHT...NW wind 40 kt. Seas 15 ft.
.FRI...NW wind 45 kt. Seas 17 ft.
.SAT...W wind 25 kt. Seas 9 ft.
.SUN...S wind 30 kt. Seas 13 ft.

$$

PKZ155-011400-
South of the AK Peninsula Castle Cape to Cape Sarichef-
355 PM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TONIGHT...W wind 40 kt. Seas 19 ft. Rain and snow.
.WED...W wind 50 kt. Seas 24 ft. Widespread snow showers.
.WED NIGHT...W wind 45 kt. Seas 23 ft.
.THU...W wind 40 kt. Seas 19 ft.
.THU NIGHT...NW wind 40 kt. Seas 19 ft.
.FRI...W wind 35 kt. Seas 15 ft.
.SAT...S wind 40 kt. Seas 12 ft.
.SUN...SE wind 40 kt. Seas 19 ft.

$$

PKZ160-011400-
Bristol Bay-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
in ice free waters 10 ft.
.WED...W wind 35 kt increasing to 45 kt in the afternoon. Seas in
ice free waters 16 ft. Freezing spray. Widespread snow showers.
.WED NIGHT...W wind 45 kt. Seas in ice free waters 16 ft. Heavy
freezing spray.
.THU...N wind 25 kt. Seas in ice free waters 10 ft.
.THU NIGHT...NW wind 30 kt. Seas in ice free waters 8 ft.
.FRI...NW wind 30 kt. Seas in ice free waters 8 ft.
.SAT...SE wind 25 kt. Seas in ice free waters 5 ft.
.SUN...SE wind 30 kt. Seas in ice free waters 5 ft.

$$

PKZ165-011400-
Port Heiden to Cape Sarichef-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 30 kt increasing to 45 kt after midnight. Seas
20 ft. Widespread snow showers.
.WED...W wind 45 kt. Seas 24 ft. Freezing spray. Widespread snow
showers.
.WED NIGHT...W wind 40 kt becoming SW 25 kt after midnight. From
Port Moller E, W wind 45 kt diminishing to 35 kt after midnight.
Seas 23 ft. Freezing spray.
.THU...SW wind 30 kt. Seas 13 ft.
.THU NIGHT...NW wind 30 kt. Seas 14 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.SAT THROUGH SUN...SE wind 40 kt. Seas 11 ft.

$$

PKZ170-011400-
Cape Sarichef to Nikolski Bering Side-
355 PM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TONIGHT...W wind 45 kt. Seas 22 ft. Widespread snow showers.
.WED...W wind 50 kt. Seas 23 ft. Widespread snow showers.
.WED NIGHT...W wind 35 kt. Seas 20 ft subsiding to 15 ft after
midnight. Snow and rain.
.THU...W wind 45 kt. Seas 26 ft.
.THU NIGHT...NW wind 40 kt. Seas 25 ft.
.FRI...SW wind 30 kt. Seas 12 ft.
.SAT THROUGH SUN...SE wind 45 kt. Seas 16 ft.

$$

PKZ171-011400-
Unalaska Bay-
355 PM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY...

.TONIGHT...W wind 40 kt. Seas 6 ft. Widespread snow showers.
.WED...W wind 50 kt. Seas 8 ft. Widespread snow showers.
.WED NIGHT...W wind 35 kt becoming SW 25 kt after midnight. Seas
5 ft. Snow and rain.
.THU...W wind 40 kt. Seas 6 ft.
.THU NIGHT...NW wind 35 kt. Seas 10 ft.
.FRI...S wind 15 kt. Seas 2 ft.
.SAT THROUGH SUN...SE wind 30 kt. Seas 5 ft.

$$

PKZ172-011400-
Cape Sarichef to Nikolski Pacific Side-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 40 kt. Seas 18 ft.
.WED...W wind 45 kt. Seas 22 ft. Snow showers.
.WED NIGHT...SW wind 40 kt. Seas 17 ft. Rain.
.THU...W wind 45 kt. Seas 23 ft.
.THU NIGHT...NW wind 40 kt. Seas 22 ft.
.FRI...SW wind 25 kt. Seas 12 ft.
.SAT THROUGH SUN...SE wind 45 kt. Seas 25 ft.

$$

PKZ173-011400-
Nikolski to Seguam Island Bering Side-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 20 ft.
.WED...W wind 40 kt. Seas 21 ft. Snow showers.
.WED NIGHT...SW wind 45 kt. Seas 17 ft. Snow and rain.
.THU...W wind 50 kt. Seas 29 ft.
.THU NIGHT...W wind 40 kt. Seas 25 ft.
.FRI...S wind 30 kt. Seas 11 ft.
.SAT...SE wind 45 kt. Seas 24 ft.
.SUN...SW wind 40 kt. Seas 24 ft.

$$

PKZ174-011400-
Nikolski to Seguam Island Pacific Side-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 35 kt increasing to 45 kt after midnight. Seas
19 ft. Snow showers.
.WED...W wind 45 kt diminishing to 35 kt in the afternoon. Seas
21 ft. Snow showers.
.WED NIGHT...SW wind 35 kt increasing to 45 kt after midnight.
Seas 19 ft. Rain.
.THU...W wind 45 kt. Seas 23 ft.
.THU NIGHT...NW wind 40 kt. Seas 22 ft.
.FRI...S wind 30 kt. Seas 11 ft.
.SAT...SE wind 45 kt. Seas 28 ft.
.SUN...SW wind 40 kt. Seas 27 ft.

$$

PKZ175-011400-
Seguam Island to Adak Bering Side-
355 PM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 17 ft. Snow showers.
.WED...W wind 40 kt. Seas 17 ft.
.WED NIGHT...W wind 50 kt. Seas 15 ft building to 23 ft after
midnight. Rain and snow.
.THU...W wind 45 kt. Seas 26 ft.
.THU NIGHT...W wind 30 kt. Seas 18 ft.
.FRI...S wind 30 kt. Seas 10 ft.
.SAT...SE wind 40 kt. Seas 18 ft.
.SUN...W wind 30 kt. Seas 14 ft.

$$

PKZ176-011400-
Seguam Island to Adak Pacific Side-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 18 ft. Snow.
.WED...W wind 40 kt becoming SW 30 kt in the afternoon. Seas 18 ft.
.WED NIGHT...SW wind 45 kt. Seas 20 ft.
.THU...W wind 40 kt. Seas 20 ft.
.THU NIGHT...W wind 25 kt. Seas 15 ft.
.FRI...SE wind 30 kt. Seas 12 ft.
.SAT...SE wind 45 kt. Seas 28 ft.
.SUN...W wind 30 kt. Seas 22 ft.

$$

PKZ177-011400-
Adak to Kiska-
355 PM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 40 kt. Seas 17 ft. Snow showers.
.WED...SW wind 30 kt becoming S 45 kt in the afternoon. Seas 16 ft. 
Rain.
.WED NIGHT...SW wind 50 kt. Seas 23 ft.
.THU...W wind 40 kt. Seas 20 ft.
.THU NIGHT...S wind 35 kt. Seas 13 ft.
.FRI...S wind 35 kt. Seas 13 ft.
.SAT...N wind 35 kt. Seas 20 ft.
.SUN...W wind 35 kt. Seas 20 ft.

$$

PKZ178-011400-
Kiska to Attu-
355 PM AKST Tue Feb 28 2023

...STORM WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...W wind 40 kt. Seas 17 ft. Freezing spray. Snow showers.
.WED...S wind 40 kt becoming SW 50 kt in the afternoon. Seas 19 ft. 
Snow and rain.
.WED NIGHT...W wind 50 kt diminishing to 40 kt after midnight.
Seas 22 ft.
.THU...SW wind 30 kt. Seas 17 ft.
.THU NIGHT...S wind 45 kt. Seas 19 ft.
.FRI...S wind 45 kt. Seas 21 ft.
.SAT THROUGH SUN...W wind 35 kt. Seas 16 ft.

$$

PKZ179-011400-
Pribilof Islands Near Shore Waters-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...W wind 45 kt. Seas 22 ft. Freezing spray. Widespread
snow showers.
.WED...W wind 40 kt. Seas 20 ft. Freezing spray. Snow.
.WED NIGHT...W wind 25 kt becoming SE after midnight. Seas 14 ft.
Snow.
.THU...NW wind 30 kt. Seas 14 ft.
.THU NIGHT...NW wind 25 kt. Seas 15 ft.
.FRI...S wind 30 kt. Seas 14 ft.
.SAT THROUGH SUN...S wind 40 kt. Seas 22 ft.

$$

PKZ180-011400-
Kuskokwim Delta and Etolin Strait-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas in ice free waters 18 ft. Heavy
freezing spray. Snow showers.
.WED...W wind 45 kt. Seas in ice free waters 19 ft. Extreme freezing
spray at a rate of 4 cm per hour or greater may rapidly accumulate 
on vessels. Widespread snow showers.
.WED NIGHT...W wind 45 kt becoming NW 35 kt after midnight. Seas
in ice free waters 18 ft. Extreme freezing
spray at a rate of 4 cm per hour or greater may rapidly accumulate 
on vessels in the evening.
.THU...N wind 20 kt. Seas in ice free waters 8 ft.
.THU NIGHT...NW wind 30 kt. Seas in ice free waters 9 ft.
.FRI...S wind 25 kt. Seas in ice free waters 8 ft.
.SAT THROUGH SUN...SE wind 40 kt. Seas in ice free waters 13 ft.

$$

PKZ181-011400-
North and West of Nunivak Island-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind 40 kt.
.WED...W wind 40 kt.
.WED NIGHT...W wind 30 kt becoming NW 15 kt after midnight.
.THU...N wind 15 kt.
.THU NIGHT...NW wind 15 kt.
.FRI...SE wind 30 kt.
.SAT...S wind 35 kt.
.SUN...SE wind 40 kt.

$$

PKZ185-011400-
Saint Matthew Island Waters-
355 PM AKST Tue Feb 28 2023

...GALE WARNING THROUGH WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 40 kt. Seas in ice free waters 16 ft subsiding to 
11 ft after midnight. Extreme freezing spray at a rate of 4 cm per 
hour or greater may rapidly accumulate on vessels. Snow showers.
.WED...NW wind 40 kt E of Saint Matthew Island... NW 35 kt W of
Saint Matthew Island. Seas in ice free waters 11 ft. Heavy
freezing spray.
.WED NIGHT...E of Saint Matthew Island, NW wind 25 kt becoming N
15 kt after midnight. W of Saint Matthew Island, NE wind 20 kt.
Seas in ice free waters 7 ft. Extreme freezing
spray at a rate of 4 cm per hour or greater may rapidly accumulate 
on vessels in the evening.
.THU...NE wind 30 kt. Seas in ice free waters 8 ft.
.THU NIGHT...W wind 30 kt. Seas in ice free waters 11 ft.
.FRI...SE wind 40 kt. Seas in ice free waters 24 ft.
.SAT...SE wind 35 kt. Seas in ice free waters 24 ft.
.SUN...SE wind 35 kt. Seas in ice free waters 18 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
536 AM AKST Sun Feb 26 2023

.ANALYSIS AND UPPER LEVELS...

A low amplitude ridge exists from the Western Bering to the
Western Gulf with the core of the estimated 150+ kt jet spreading
from Shemya to the Alaska Peninsula. This ridging, northwest flow
and subsequent drying off the Alaska Range has lead to a very dry
airmass over Southcentral. As such, temperatures have dropped
significantly overnight for most areas underneath clear skies and
light winds. However, pockets of fog and low stratus have also
developed from Trapper Creek south into the Anchorage Bowl and
Knik Arm area. Gap winds continue through Seward, Whittier and
Valdez.

Out west, a shortwave trough riding over the ridge has produced
some light snow from the Kuskokwim Delta to southern Bristol Bay.
A warm front also extends from the Western Aleutians to Unalaska.

&&

.MODEL DISCUSSION...

Overall model agreement is moderate in the immediate short term
but begins to diverge Monday as a strong system moves into the
Western Bering. There's significant differences in the shape,
meso-low development and depth of the low as it goes through the
occlusion process over the Western to Central Bering through
Tuesday. The other difference of note is the thermodynamic profile
over the Alaska Peninsula on Tuesday, with the two American models
moving +0C air over the area at 850mb and the foreign models
keeping it much cooler with the occlusion farther to the south.
Winds moving through the terrain would likely make for rain from
King Salmon south regardless, but this still creates some
uncertainty in the forecast for that area. Models then converge
back to a general consensus on the development of a low at the
triple point near the Barren Islands, but significant timing
differences remain which will impact the snow forecast for
Southcentral.

&&

.AVIATION...

PANC...Fog and low stratus have developed in the Susitna Valley
and along the Knik Arm. Currently the stratus is confined to east
and north of the Terminal, but it may move back in over the
terminal and lower to fog later in the morning. IFR conditions
would likely develop should this occur. Otherwise, VFR conditions
and light winds will persist.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3:
Sunday through Tuesday night)...

Gusty gap winds along the Southcentral coast will continue today
due the strong pressure gradient between a building ridge over
the interior and a trough over the northern and eastern Gulf of
Alaska. A weak shortwave moving across Southcentral this morning,
embedded in the northwesterly flow aloft, will act to reinforce
the cold air advection and allow for a secondary peak of the gusty
winds through favored gap locations. These winds will finally begin
to subside Monday afternoon as the trough moves inland over
northern Canada and an upper-level ridge builds from the west.

With the current pattern in place, expect below normal
temperatures to continue across the region through Tuesday
morning. Skies are expected to remain mostly clear through the
next couple of days, as well. The exception to this will be areas
of stratus and fog lingering from Cook Inlet to the Mat-Su
Valleys and across portions of the Copper River Basin this
morning.

Attention then turns to a large area of low pressure developing
over the Bering Sea Monday pushing an occluded front over
Southwest Alaska for Tuesday. This front will bring snow,
transitioning to rain, for Kodiak Island Tuesday before lifting
toward the northern Gulf. As it moves north, a new surface low is
expected to spin up near the Barren Islands. This new area of low
pressure, along with the residual front, will bring widespread
snow to Southcentral, first to the Kenai Peninsula and Susitna
Valley for Tuesday morning, spreading east to Cordova, Valdez, and
the Copper river Basin by Tuesday afternoon. As the low slowly
moves parallel to the eastern Kenai coast, its attendant front
will move toward Prince William Sound. Strong easterly winds will
overspread the coastal waters, eventually working through favored
gaps across the Kenai Peninsula. The strong winds and snow will
combine to produce blowing snow for Whittier, Portage Valley, and
Turnagain Pass Tuesday afternoon and evening before the low moves
east and the winds begin to shift. Snow will continue for most
locations through Wednesday before tapering off from west to east
late Wednesday into early Thursday as the low moves to the Alaska
Panhandle. Gusty westerly winds in the wake of the low could
result in another round of blowing snow for the aforementioned
locations as well and Valdez and Thompson Pass for Wednesday into
Thursday.

The highest accumulations are expected across the eastern Kenai
Peninsula, especially at elevation and through Portage Valley,
Turnagain Pass, and Whittier. Significant accumulations are also
possible for the western Kenai Peninsula, across portions of the
Susitna Valley, and around Cordova. Several inches of snow are
also possible for Anchorage and the Matanuska Valley; however, an
initially strong cross-barrier flow could limit the amount of
moisture spilling over the mountains for a time on Tuesday. Once
the low moves east of Seward, however, snow is expected to fill in
for these locations. The amount of snow for Anchorage to Palmer
will likely be highly dependent on the track of the low and the
location of any deformation band.

While there is high confidence for widespread snow, there is
still some uncertainty in the track of the low, and, hence,
snowfall amounts for many locations across the region. Stay tuned
to future forecasts as we continue to monitor the situation and
refine the forecast.

&&

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

Two areas of snow showers are noted on radar this morning across
Southwest Alaska. The first is occurring over the Kuskokwim Delta
and in conjunction with the passage of a shortwave trough quickly
pushing eastward into the Kuskokwim Mountains. Visibility in
Bethel is less than six miles with lowered ceilings to around 2000
feet. This axis of snow will taper of from west to east through
the rest of the morning hours. The second area of snow is
occurring further south and across portions of Bristol Bay where
the remnants of an occluded low are slowly moving southeastward.
Like Bethel, the town of Dillingham is also experiencing reduced
visibility and lowered ceilings. Both areas should see snow
gradually come to an end over the next few hours. Behind the snow
a colder air mass remains forecast to filter southward into all of
Southwest through Monday with morning lows in the single digits
and lower across Bristol Bay. Meanwhile, much of the Kuskokwim
Delta and Lower Kuskokwim Valley are expected to cool to below
zero degrees through Monday morning.

Temperatures will begin to rebound Monday into Tuesday as the
next Bering front begins to slide into Southwest. A winter weather
advisory is in effect for the Kuskokwim Delta Monday evening
through Tuesday morning. Increasing winds associated with the
front and 4 to 8 inches of snow will impact coastal areas with
blowing snow and reduced visibilities down to one half mile.
Continued warming through Tuesday morning will eventually see snow
transition to rain, and the threat for blowing snow and reduced
visibility will come to an end. Areas expected to experience the
strongest winds and the greatest likelihood for blowing snow and
reduced visibility will stretch from Mekoryuk to Toksook Bay to
Kipnuk.

Precipitation associated with the front then spreads south and
west throughout the day on Tuesday as the front moves further
inland. Snow accumulations of 4 to 8 inches are possible for the
Kuskokwim Valley and interior Bristol Bay. There is some
uncertainty in the precipitation type forecast for the Alaska
Peninsula south of King Salmon, with warmer air aloft and
southerly gap winds producing rain or mixed precipitation.

&&

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

The next Bering low is already bringing a warm front across the
Aleutians this morning. Temperatures are above freezing from
Shemya to Sand Point. As such, showery conditions will be
prevalent across much of the region through Monday. The Pribilof
Islands will remain north of the warmer air until Monday morning.
A winter weather advisory is in effect for snow and blowing snow
from 9AM Sunday through 9AM Monday. Thereafter, the warm front
will lift north of the Pribilofs and bring their temperatures to
above freezing as well. For the rest of Monday and into Tuesday
the Bering low is expected to deepen further while lifting into
the Chukchi Sea. Gale to storm force winds are likely over the
Western Aleutians late Monday with enhanced winds approaching the
Pribilof Islands by Monday night. Additionally, as the low lifts
northward, cold air on the backside of the low will wrap eastward
and across the Western Aleutians beginning as early as Monday
morning. Colder air will then filter eastward through the rest of
the Aleutian Chain through Tuesday. Widespread snow showers may
develop across the entire Aleutian Chain by late Tuesday as a
Kamchatka low tracks just north and along the Western and Central
Aleutians into Tuesday night. However, much more uncertainty
exists with the evolution of the Bering low and the potential
Kamchatka low on Tuesday.

&&

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

The defining synoptic feature by Wednesday morning is a low
situated about coastal Western Alaska, with another low formed at
the triple-point of the former in the western Gulf of Alaska. The
shape and placement of both the parental low and the triple-point
low are not well agreed upon by the deterministic models, however
discrepancies have diminished since yesterday's model runs.
Wednesday morning, the 12Z Canadian and Euro models have the low
center over coastal Southwest Alaska, with multiple defined
troughs producing higher winds along the AKPen and producing the
aforementioned triple-point low in the western Gulf. Wednesday
morning on the 12Z GFS, the low is still offshore from Southwest
Alaska, with less defined frontal boundaries, suggesting less
intense winds along the AKPen and the triple point low has yet to
spin up. However, Wednesday morning represented by the 12Z GFS
appears to bring a widespread potentially heavy precipitation,
likely snowfall, event across Southcentral and Southwest. Impacts
to population centers such as Anchorage is difficult to determine
currently however, downslope flow will likely play a part in
mitigating snowfall for the Anchorage Bowl. This precipitation
wave is not advertised to be as intense by the Canadian and Euro
models, so we will need to wait to obtain a better idea once the
models converge on a solution. By Wednesday afternoon, the GFS and
Canadian runs come much more in-line, consolidating the trough to
the low in the Gulf and producing strong westerly and offshore
winds as the low moved east of Prince William Sound.

Precipitation will diminish across Southcentral by Friday and into
the start of the weekend. Transient showers look to linger in
Southwest Alaska Thursday and Friday with a weak wave to move in
Saturday morning. A resurgence of gusty winds out of the southern
gaps and passes of the Eastern Aleutians, AKPen, and near the Barren
Island Friday. Out in the Bering, a gale force low entering the
Western Aleutians will support the potential for Storm-force
gusts, and mild precipitation as it tracks into the Central
Aleutians Thursday afternoon, before dipping out to the south,
creating the aforementioned resurgence of winds on Friday. By
Friday afternoon, a new low appears to enter the Western Bering
bringing a sweeping front into the Western Aleutians. By Saturday
morning, this sweeping front looks to possibly merge with a North
Pacific low approaching the Central Aleutians.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...WINTER WEATHER ADVISORY 155 195.
MARINE...HEAVY FREEZING SPRAY 119 121 26-130 139 141 160 412 413
180 181 185
STORM WARNING 177 178
GALE WARNING 130 131 175 176 179-181 185 411-414.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...CJ
SOUTHCENTRAL ALASKA...TM
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...BL
LONG TERM...CL