Heavy Freezing Spray Warning 53, NWS Anchorage, AK

536 
FZAK52 PAFC 050101
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
401 PM AKST Thu Feb 4 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.

PKZ199-051430-
401 PM AKST Thu Feb 4 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1002 mb low 80 nm South of St Paul Island moves over the Seward
Peninsula and dissipates Sat afternoon. Its front dissipates Fri 
afternoon. A 974 mb low 300 nm South of Attu Fri night moves to 
130 nm West of Attu at 979 mb for Sat afternoon. Its front extends
over the Western Aleutians through Sat afternoon.

$$

PKZ150-051430-
South of the AK Peninsula Sitkinak to Castle Cape-
401 PM AKST Thu Feb 4 2021

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

.TONIGHT...SE wind 15 kt. Seas 8 ft. Rain.
.FRI...NW wind 30 kt. Seas 9 ft.
.FRI NIGHT...NW wind 25 kt diminishing to 15 kt after midnight.
Seas 9 ft.
.SAT...W wind 15 kt. Seas 7 ft.
.SAT NIGHT...SE wind 20 kt. Seas 9 ft.
.SUN...S wind 20 kt. Seas 9 ft.
.MON THROUGH TUE...N wind 20 kt. Seas 9 ft.

$$

PKZ155-051430-
South of the AK Peninsula Castle Cape to Cape Sarichef-
401 PM AKST Thu Feb 4 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 25 kt. Seas 10 ft. Rain.
.FRI...W wind 25 kt. Seas 10 ft.
.FRI NIGHT...SE wind 15 kt becoming E 25 kt after midnight. From
the Shumagin Islands E, variable wind 10 kt becoming E 15 kt after 
midnight. Seas 9 ft.
.SAT AND SAT NIGHT...SE wind 35 kt. Seas 15 ft.
.SUN...S wind 30 kt. Seas 14 ft.
.MON...N wind 15 kt. Seas 9 ft.
.TUE...NE wind 25 kt. Seas 11 ft.

$$

PKZ160-051430-
Bristol Bay-
401 PM AKST Thu Feb 4 2021

...HEAVY FREEZING SPRAY WARNING TONIGHT...
...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...E wind 25 kt. Seas in ice free waters 5 ft. Heavy
freezing spray. Snow.
.FRI...W wind 25 kt. Seas in ice free waters 6 ft.
.FRI NIGHT...SW wind 15 kt. Seas in ice free waters 5 ft.
.SAT...N wind 15 kt. Seas in ice free waters 4 ft.
.SAT NIGHT...E wind 30 kt. Seas in ice free waters 4 ft.
.SUN...E wind 30 kt. Seas in ice free waters 4 ft.
.MON...NE wind 15 kt. Seas in ice free waters 5 ft.
.TUE...NE wind 20 kt. Seas in ice free waters 5 ft.

$$

PKZ165-051430-
Port Heiden to Cape Sarichef-
401 PM AKST Thu Feb 4 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...SE wind 30 kt. Seas 12 ft. Rain.
.FRI...W wind 25 kt. Seas 11 ft.
.FRI NIGHT...S wind 20 kt except SW 15 kt from Port Moller E. Seas
9 ft.
.SAT AND SAT NIGHT...E wind 35 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 8 ft.
.MON...N wind 15 kt. Seas 9 ft.
.TUE...NE wind 25 kt. Seas 8 ft.

$$

PKZ170-051430-
Cape Sarichef to Nikolski Bering Side-
401 PM AKST Thu Feb 4 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 14 ft.
.FRI...SW wind 25 kt. Seas 11 ft.
.FRI NIGHT...SE wind 20 kt increasing to 30 kt after midnight.
Seas 9 ft.
.SAT...E wind 45 kt. Seas 13 ft.
.SAT NIGHT...SE wind 40 kt. Seas 13 ft.
.SUN...SW wind 30 kt. Seas 10 ft.
.MON...SE wind 15 kt. Seas 8 ft.
.TUE...E wind 25 kt. Seas 7 ft.

$$

PKZ171-051430-
Unalaska Bay-
401 PM AKST Thu Feb 4 2021

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

.TONIGHT...W wind 25 kt becoming SW 15 kt after midnight. Seas 4
ft subsiding to 2 ft after midnight.
.FRI...S wind 10 kt increasing to 15 kt in the afternoon. Seas 2
ft.
.FRI NIGHT...SE wind 15 kt increasing to 25 kt after midnight.
Seas 2 ft building to 4 ft after midnight.
.SAT...SE wind 40 kt. Seas 6 ft.
.SAT NIGHT...SE wind 35 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 2 ft.
.MON...Variable wind less than 10 kt. Seas 3 ft.
.TUE...E wind 20 kt. Seas 3 ft.

$$

PKZ172-051430-
Cape Sarichef to Nikolski Pacific Side-
401 PM AKST Thu Feb 4 2021

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...W wind 30 kt diminishing to 20 kt after midnight. Seas
14 ft.
.FRI...W wind 15 kt becoming S 20 kt in the afternoon. Seas 10 ft.
.FRI NIGHT...SE wind 25 kt becoming E 35 kt after midnight. Seas
12 ft.
.SAT...E wind 40 kt. Seas 20 ft.
.SAT NIGHT...SE wind 35 kt. Seas 18 ft.
.SUN...W wind 25 kt. Seas 16 ft.
.MON...N wind 15 kt. Seas 10 ft.
.TUE...NE wind 25 kt. Seas 13 ft.

$$

PKZ173-051430-
Nikolski to Seguam Island Bering Side-
401 PM AKST Thu Feb 4 2021

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...W wind 30 kt becoming S after midnight. Seas 11 ft.
.FRI...S wind 30 kt. Seas 11 ft.
.FRI NIGHT...SE wind 40 kt. Seas 15 ft.
.SAT...E wind 40 kt. Seas 15 ft.
.SAT NIGHT...S wind 30 kt. Seas 12 ft.
.SUN...SW wind 25 kt. Seas 11 ft.
.MON...SE wind 20 kt. Seas 9 ft.
.TUE...E wind 25 kt. Seas 11 ft.

$$

PKZ174-051430-
Nikolski to Seguam Island Pacific Side-
401 PM AKST Thu Feb 4 2021

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...W wind 30 kt becoming S after midnight. Seas 13 ft.
.FRI...SE wind 30 kt. Seas 12 ft.
.FRI NIGHT...SE wind 40 kt. Seas 16 ft. Rain.
.SAT...SE wind 40 kt. Seas 16 ft.
.SAT NIGHT...SW wind 25 kt. Seas 19 ft.
.SUN...SW wind 25 kt. Seas 19 ft.
.MON...SE wind 20 kt. Seas 10 ft.
.TUE...E wind 25 kt. Seas 15 ft.

$$

PKZ175-051430-
Seguam Island to Adak Bering Side-
401 PM AKST Thu Feb 4 2021

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW wind 20 kt becoming S 30 kt after midnight. Seas 10 
ft.
.FRI...SE wind 20 kt increasing to 35 kt in the afternoon. Seas
8 ft.
.FRI NIGHT...SE wind 45 kt. Seas 15 ft. Rain with snow.
.SAT...SE wind 35 kt. Seas 14 ft.
.SAT NIGHT...SW wind 25 kt. Seas 11 ft.
.SUN...SW wind 30 kt. Seas 12 ft.
.MON THROUGH TUE...E wind 30 kt. Seas 11 ft.

$$

PKZ176-051430-
Seguam Island to Adak Pacific Side-
401 PM AKST Thu Feb 4 2021

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 14 ft.
.FRI...SE wind 25 kt increasing to 40 kt in the afternoon. Seas
16 ft.
.FRI NIGHT...SE wind 45 kt. Seas 23 ft. Rain.
.SAT...SE wind 30 kt. Seas 19 ft.
.SAT NIGHT...SW wind 30 kt. Seas 20 ft.
.SUN...SW wind 30 kt. Seas 20 ft.
.MON THROUGH TUE...E wind 30 kt. Seas 17 ft.

$$

PKZ177-051430-
Adak to Kiska-
401 PM AKST Thu Feb 4 2021

...STORM WARNING FRIDAY...

.TONIGHT...SW wind 20 kt. Seas 15 ft.
.FRI...E wind 35 kt increasing to 50 kt in the afternoon. Seas 13
ft
building to 18 ft in the afternoon. Snow and rain.
.FRI NIGHT...SE wind 45 kt becoming S 35 kt after midnight. Seas
21 ft. Snow with rain.
.SAT...S wind 30 kt. Seas 24 ft.
.SAT NIGHT...SW wind 30 kt. Seas 24 ft.
.SUN...S wind 30 kt. Seas 21 ft.
.MON...SE wind 35 kt. Seas 24 ft.
.TUE...E wind 40 kt. Seas 24 ft.

$$

PKZ178-051430-
Kiska to Attu-
401 PM AKST Thu Feb 4 2021

...STORM WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW wind 15 kt. Seas 15 ft. Freezing spray.
.FRI...E wind 40 kt increasing to 55 kt in the afternoon. Seas 13
ft building to 21 ft in the afternoon. Freezing spray. Snow.
.FRI NIGHT...SE wind 55 kt diminishing to 40 kt after midnight.
Seas 22 ft. Rain.
.SAT...SE wind 45 kt. Seas 29 ft.
.SAT NIGHT...SW wind 35 kt. Seas 21 ft.
.SUN...S wind 35 kt. Seas 20 ft.
.MON...E wind 35 kt. Seas 22 ft.
.TUE...E wind 30 kt. Seas 24 ft.

$$

PKZ179-051430-
Pribilof Islands Near Shore Waters-
401 PM AKST Thu Feb 4 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 30 kt becoming W in the evening. Seas 14 ft. Rain.
.FRI...SW wind 25 kt. Seas 11 ft.
.FRI NIGHT...Variable wind 10 kt becoming E 25 kt after midnight.
Seas 10 ft.
.SAT...E wind 40 kt. Seas 15 ft.
.SAT NIGHT...E wind 45 kt. Seas 18 ft.
.SUN...S wind 35 kt. Seas 16 ft.
.MON...SE wind 15 kt. Seas 13 ft.
.TUE...E wind 25 kt. Seas 9 ft.

$$

PKZ180-051430-
Kuskokwim Delta and Etolin Strait-
401 PM AKST Thu Feb 4 2021

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas in ice free waters 10 ft. Heavy
freezing spray. Snow.
.FRI...SW wind 25 kt. Seas in ice free waters 10 ft.
.FRI NIGHT...SW wind 20 kt. Seas in ice free waters 7 ft.
.SAT...E wind 25 kt. Seas in ice free waters 5 ft.
.SAT NIGHT...E wind 35 kt. Seas in ice free waters 8 ft.
.SUN...E wind 35 kt. Seas in ice free waters 8 ft.
.MON...NE wind 15 kt. Seas in ice free waters 5 ft.
.TUE...NE wind 20 kt. Seas in ice free waters 5 ft.

$$

PKZ181-051430-
North and West of Nunivak Island-
401 PM AKST Thu Feb 4 2021

...GALE WARNING THROUGH FRIDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY...

.TONIGHT...SE wind 35 kt. Heavy freezing spray. Snow.
.FRI...SW wind 35 kt diminishing to 25 kt in the afternoon. Heavy
freezing spray.
.FRI NIGHT...SW wind 15 kt.
.SAT...E wind 25 kt.
.SAT NIGHT...E wind 30 kt.
.SUN...E wind 35 kt.
.MON THROUGH TUE...NE wind 20 kt.

$$

PKZ185-051430-
Saint Matthew Island Waters-
401 PM AKST Thu Feb 4 2021

...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY...
...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...E of Saint Matthew Island, SE wind 30 kt. W of Saint
Matthew Island, SE wind 20 kt becoming SW after midnight. Seas in
ice free waters 12 ft. Heavy freezing spray.
.FRI...SW wind 30 kt E of Saint Matthew Island...W 20 kt W of
Saint Matthew Island. Seas in ice free waters 11 ft. Heavy freezing 
spray.
.FRI NIGHT...E of Saint Matthew Island, W wind 15 kt. W of Saint
Matthew Island, variable wind 10 kt becoming NE 30 kt after
midnight. Seas in ice free waters 9 ft.
.SAT...E wind 40 kt. Seas in ice free waters 14 ft.
.SAT NIGHT...E wind 45 kt. Seas in ice free waters 22 ft.
.SUN...E wind 45 kt. Seas in ice free waters 23 ft.
.MON THROUGH TUE...E wind 25 kt. Seas in ice free waters 15 ft.

$$

962 
FZAK52 PAFC 051214
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
314 AM AKST Fri Feb 5 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.

PKZ199-060045-
314 AM AKST Fri Feb 5 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1003 mb low 135 nm northwest of Mekoryuk moves across St. 
Lawrence Island Fri afternoon. A front enters the southwestern 
Aleutians and moves into the central Bering and Aleutians Fri 
afternoon.

$$

PKZ150-060045-
South of the AK Peninsula Sitkinak to Castle Cape-
314 AM AKST Fri Feb 5 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...S wind 15 kt becoming W 25 kt in the afternoon. Seas 9 ft.
.TONIGHT...NW wind 25 kt becoming N 15 kt after midnight. Seas
10 ft.
.SAT...Variable wind 10 kt becoming NE 20 kt in the afternoon.
Seas 9 ft.
.SAT NIGHT...SE wind 20 kt. Seas 10 ft.
.SUN...SE wind 20 kt. Seas 10 ft.
.MON...NW wind 15 kt. Seas 8 ft.
.TUE...N wind 20 kt. Seas 8 ft.

$$

PKZ155-060045-
South of the AK Peninsula Castle Cape to Cape Sarichef-
314 AM AKST Fri Feb 5 2021

...GALE WARNING SATURDAY...

.TODAY...W wind 25 kt diminishing to 15 kt in the afternoon. Seas
11 ft.
.TONIGHT...SE wind 20 kt becoming E 30 kt after midnight. From the
Shumagin Islands E, variable wind 10 kt becoming E 20 kt after
midnight. Seas 9 ft.
.SAT...E wind 40 kt except E 30 kt from the Shumagin Islands E.
Seas 17 ft. Rain.
.SAT NIGHT...SE wind 35 kt. Seas 17 ft.
.SUN...SE wind 30 kt. Seas 14 ft.
.MON THROUGH TUE...NE wind 15 kt. Seas 11 ft.

$$

PKZ160-060045-
Bristol Bay-
314 AM AKST Fri Feb 5 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt. Seas in ice free waters 7 ft.
.TONIGHT...SW wind 15 kt. Seas in ice free waters 7 ft.
.SAT...W wind 10 kt becoming NE 20 kt in the afternoon. Seas in
ice free waters 4 ft.
.SAT NIGHT...E wind 25 kt. Seas in ice free waters 5 ft.
.SUN...E wind 25 kt. Seas in ice free waters 5 ft.
.MON...NE wind 20 kt. Seas in ice free waters 4 ft.
.TUE...NE wind 25 kt. Seas in ice free waters 4 ft.

$$

PKZ165-060045-
Port Heiden to Cape Sarichef-
314 AM AKST Fri Feb 5 2021

...GALE WARNING SATURDAY...

.TODAY...W wind 25 kt. Seas 11 ft.
.TONIGHT...S wind 15 kt becoming SE 25 kt after midnight. Seas 9
ft.
.SAT...E wind 40 kt except E 30 kt from Port Moller E. Seas 10 ft.
.SAT NIGHT...E wind 40 kt. Seas 10 ft.
.SUN...SE wind 30 kt. Seas 9 ft.
.MON THROUGH TUE...NE wind 20 kt. Seas 7 ft.

$$

PKZ170-060045-
Cape Sarichef to Nikolski Bering Side-
314 AM AKST Fri Feb 5 2021

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...SW wind 25 kt. Seas 11 ft.
.TONIGHT...SE wind 35 kt. Seas 11 ft.
.SAT...E wind 45 kt. Seas 16 ft. Rain and snow.
.SAT NIGHT...SE wind 40 kt. Seas 15 ft.
.SUN...NW wind 25 kt. Seas 7 ft.
.MON...N wind 20 kt. Seas 6 ft.
.TUE...E wind 25 kt. Seas 8 ft.

$$

PKZ171-060045-
Unalaska Bay-
314 AM AKST Fri Feb 5 2021

...GALE WARNING SATURDAY...

.TODAY...S wind 20 kt. Seas 3 ft.
.TONIGHT...SE wind 30 kt. Seas 3 ft building to 5 ft after
midnight.
.SAT...E wind 45 kt. Seas 7 ft. Rain and snow.
.SAT NIGHT...SE wind 30 kt. Seas 5 ft.
.SUN...NW wind 20 kt. Seas 5 ft.
.MON...N wind 15 kt. Seas 5 ft.
.TUE...E wind 15 kt. Seas 3 ft.

$$

PKZ172-060045-
Cape Sarichef to Nikolski Pacific Side-
314 AM AKST Fri Feb 5 2021

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...S wind 20 kt. Seas 10 ft.
.TONIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas 14 
ft. Rain and snow.
.SAT...E wind 45 kt. Seas 23 ft. Rain.
.SAT NIGHT...SE wind 35 kt. Seas 19 ft.
.SUN THROUGH MON...N wind 30 kt. Seas 14 ft.
.TUE...E wind 25 kt. Seas 13 ft.

$$

PKZ173-060045-
Nikolski to Seguam Island Bering Side-
314 AM AKST Fri Feb 5 2021

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...S wind 30 kt. Seas 11 ft.
.TONIGHT...SE wind 40 kt. Seas 16 ft.
.SAT...E wind 35 kt diminishing to 25 kt in the afternoon. Seas 15 
ft. Snow.
.SAT NIGHT...S wind 20 kt. Seas 13 ft.
.SUN...W wind 15 kt. Seas 9 ft.
.MON...E wind 15 kt. Seas 6 ft.
.TUE...E wind 30 kt. Seas 12 ft.

$$

PKZ174-060045-
Nikolski to Seguam Island Pacific Side-
314 AM AKST Fri Feb 5 2021

...GALE WARNING THROUGH SATURDAY...

.TODAY...S wind 25 kt becoming SE 35 kt in the afternoon. Seas
14 ft.
.TONIGHT...SE wind 40 kt. Seas 17 ft. Rain.
.SAT...E wind 40 kt becoming SE 25 kt in the afternoon. Seas 18
ft.
.SAT NIGHT...SW wind 20 kt. Seas 16 ft.
.SUN...W wind 15 kt. Seas 16 ft.
.MON...NE wind 15 kt. Seas 13 ft.
.TUE...E wind 30 kt. Seas 18 ft.

$$

PKZ175-060045-
Seguam Island to Adak Bering Side-
314 AM AKST Fri Feb 5 2021

...GALE WARNING THROUGH SATURDAY...

.TODAY...S wind 25 kt becoming SE 40 kt in the afternoon. Seas
11 ft.
.TONIGHT...SE wind 45 kt. Seas 16 ft.
.SAT...SE wind 35 kt becoming S 25 kt in the afternoon. Seas 16
ft. Rain and snow.
.SAT NIGHT...SW wind 25 kt. Seas 11 ft.
.SUN...SW wind 30 kt. Seas 11 ft.
.MON THROUGH TUE...E wind 30 kt. Seas 11 ft.

$$

PKZ176-060045-
Seguam Island to Adak Pacific Side-
314 AM AKST Fri Feb 5 2021

...STORM WARNING TODAY...

.TODAY...SE wind 30 kt increasing to 50 kt in the afternoon. Seas
19 ft.
.TONIGHT...SE wind 45 kt. Seas 23 ft. Rain.
.SAT...SE wind 35 kt becoming SW 20 kt in the afternoon. Seas 21
ft. Rain and snow.
.SAT NIGHT...SW wind 25 kt. Seas 21 ft.
.SUN...SW wind 30 kt. Seas 20 ft.
.MON THROUGH TUE...E wind 30 kt. Seas 21 ft.

$$

PKZ177-060045-
Adak to Kiska-
314 AM AKST Fri Feb 5 2021

...STORM WARNING TODAY...

.TODAY...E wind 35 kt increasing to 50 kt in the afternoon. Seas
14 ft building to 19 ft in the afternoon. Rain showers.
.TONIGHT...SE wind 45 kt becoming S 35 kt after midnight. Seas
21 ft. Rain.
.SAT...S wind 35 kt. Bering side, seas 17 ft...Pacific side, seas 21
ft building to 28 ft in the afternoon.
.SAT NIGHT...SW wind 35 kt. Seas 25 ft.
.SUN...S wind 40 kt. Seas 22 ft.
.MON...SE wind 40 kt. Seas 22 ft.
.TUE...E wind 30 kt. Seas 22 ft.

$$

PKZ178-060045-
Kiska to Attu-
314 AM AKST Fri Feb 5 2021

...STORM WARNING THROUGH TONIGHT...

.TODAY...E wind 40 kt increasing to 55 kt in the afternoon. Seas
14 ft building to 20 ft in the afternoon. Freezing spray. Rain
showers.
.TONIGHT...E wind 55 kt becoming SE 40 kt after midnight. Seas
22 ft. Rain and snow.
.SAT...SE wind 45 kt. Bering side, seas 19 ft building to 25 ft in
the afternoon...Pacific side, seas 30 ft.
.SAT NIGHT...S wind 35 kt. Seas 24 ft.
.SUN...S wind 40 kt. Seas 23 ft.
.MON...SE wind 40 kt. Seas 18 ft.
.TUE...S wind 25 kt. Seas 17 ft.

$$

PKZ179-060045-
Pribilof Islands Near Shore Waters-
314 AM AKST Fri Feb 5 2021

...GALE WARNING SATURDAY...

.TODAY...SW wind 30 kt. Seas 16 ft.
.TONIGHT...S wind 15 kt becoming SE 25 kt after midnight. Seas
13 ft.
.SAT...E wind 30 kt increasing to 40 kt in the afternoon. Seas
15 ft. Rain and snow.
.SAT NIGHT...SE wind 40 kt. Seas 16 ft.
.SUN...W wind 20 kt. Seas 11 ft.
.MON...N wind 15 kt. Seas 8 ft.
.TUE...E wind 25 kt. Seas 7 ft.

$$

PKZ180-060045-
Kuskokwim Delta and Etolin Strait-
314 AM AKST Fri Feb 5 2021

...HEAVY FREEZING SPRAY WARNING SATURDAY...
...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...SW wind 30 kt. Seas in ice free waters 11 ft.
.TONIGHT...SW wind 25 kt. Seas in ice free waters 8 ft.
.SAT...E wind 20 kt increasing to 30 kt in the afternoon. Seas in
ice free waters 6 ft. Heavy freezing spray.
.SAT NIGHT...E wind 35 kt. Seas in ice free waters 9 ft.
.SUN...E wind 35 kt. Seas in ice free waters 9 ft.
.MON THROUGH TUE...NE wind 25 kt. Seas in ice free waters 4 ft.

$$

PKZ181-060045-
North and West of Nunivak Island-
314 AM AKST Fri Feb 5 2021

...GALE WARNING TODAY...

.TODAY...SW wind 40 kt diminishing to 30 kt in the afternoon.
.TONIGHT...SW wind 20 kt.
.SAT...E wind 20 kt increasing to 30 kt in the afternoon.
.SAT NIGHT...E wind 35 kt.
.SUN...E wind 35 kt.
.MON THROUGH TUE...NE wind 25 kt.

$$

PKZ185-060045-
Saint Matthew Island Waters-
314 AM AKST Fri Feb 5 2021

...GALE WARNING TODAY AND SATURDAY...
...HEAVY FREEZING SPRAY WARNING TODAY AND SATURDAY...

.TODAY...SW wind 35 kt E of Saint Matthew Island...W 20 kt W of
Saint Matthew Island. Seas in ice free waters 11 ft. Heavy
freezing spray.
.TONIGHT...E of Saint Matthew Island, SW wind 20 kt. W of Saint
Matthew Island, NW wind 15 kt becoming NE 30 kt after midnight.
Seas in ice free waters 10 ft.
.SAT...E of Saint Matthew Island, E wind 25 kt increasing to 35 kt
in the afternoon. W of Saint Matthew Island, E wind 40 kt. Seas in
ice free waters 13 ft. Heavy freezing spray.
.SAT NIGHT...E wind 45 kt. Seas in ice free waters 19 ft.
.SUN...SE wind 40 kt. Seas in ice free waters 16 ft.
.MON...E wind 30 kt. Seas in ice free waters 13 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 18 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
351 PM AKST Wed Feb 3 2021

.ANALYSIS AND UPPER LEVELS...

Analysis shows strong high pressure over the eastern Pacific with
a ridge edging north into the Gulf of Alaska, and a strong low
pressure system rotating over Kamchatka with an attendant front
stretching southeast across the western Aleutians. Between the
two, a fast moving shortwave is moving east across southwest
Alaska.

At the surface, an area of weakening low pressure continues to
move east toward Southeast Alaska. Temperatures range from around
30 degrees in the Prince William Sound area and the 20s to around
30 degrees at other coastal areas, quickly dropping into the
single digits and teens at most other areas. The coldest readings
are in the teens below zero in the Copper River Basin area.

Gale force winds and waves can be seen along the western Bering
and Aleutians as the front continues across the area.

&&

.MODEL DISCUSSION...

Models remain in fairly good agreement on synoptic features
through the next several days. The weak shortwave approaching
Southwest Alaska will continue to weaken as it moves east across
the state overnight into Thursday, with little effect. The main
feature to watch is the approaching system forecast to move across
the Aleutians Thursday into Southcentral for Friday, bringing a
good chance for snow.

&&

.AVIATION...

PANC...Expect MVFR conditions to continue, as no good push to
scour it out. Any additional snow this afternoon will be very
light, little more than flurries. Fog may develop in the vicinity
overnight, but the environment favors a stratus deck over fog, so
if anything does form it should be isolated in nature and likely
won't move over the terminal.

&&

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

The synoptic pattern features a low in the Gulf at the surface
and an upper level trough over the Yukon-Kuskokwim Delta, with an
arctic trough over the Brooks Range. There are numerous embedded
shortwaves from western Alaska to the Gulf of Alaska. The
disturbance that brought snow to most of Southcentral overnight
has moved through the Cook Inlet region as of early this morning
and is headed towards the Copper River Basin by late this
afternoon and evening. Stratus and patchy fog will persist in the
Cook Inlet and other portions of South Central.

An upper level ridge will move across western Alaska and into
Southcentral Alaska on Friday. This is a fast moving feature. In
its wake, the models bring a slug of upper level energy across
Kodiak and Cook Inlet late Friday and Saturday. This is our next
potential snow maker for portions of Southcentral, but again only
light accumulations are anticipated for the Anchorage Bowl. This
strong lobe of vorticity will move across the northern Gulf and
towards Cordova and Glacier Bay National Park. This pattern will
bring strong winds to the Barren Islands and Hitchinbrook
Entrance.

&&

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

Low stratus and fog has been the dominating weather across
Southwest Alaska earlier today, which will continue throughout
the evening for some areas. An upper level wave over the Kuskokwim
Delta and Valley will continue to produce snow showers before
tapering off for Thursday morning. A quieter weather pattern sets
up through late Thursday, with most of Southwest Alaska drying
out. The pattern shifts as a front moves over the coastal areas by
Thursday night, which will then spread farther inland throughout
the day on Friday. Blowing snow is possible for locations along
the Kuskokwim Delta Coast as the front brings stronger winds, but
there is still uncertainty in the timing of the front and
heaviest snowfall. Snow accumulations of a few inches are expected
as this system moves quickly across the region. Models have come
into better agreement today, allowing for forecast confidence
to increase. This system exits the region by Saturday morning,
with a few lingering showers, before the clear conditions set back
up across the Southwest mainland for the weekend.

&&

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

A gale force front over the central Bering this afternoon will
continue its eastward path, bringing widespread precipitation
from the Pribilofs to the central and eastern Aleutians through
the evening hours. Precipitation will stay mostly rain, or a mix
of rain and snow with this warmer system before the colder air
begins to move back into the region by Friday morning. The front
will reach the AKPEN Friday morning as it continues to weaken.

After this system diminishes, a much more uncertain pattern sets
up over the western Bering and Aleutians as the models are having
a difficult time with a compact low feature trying to develop on
Thursday into early Friday. However, models come back into good
agreement by Friday afternoon with a much larger frontal system
beginning to move over the western Aleutians and Bering. Storm
force winds will accompany this system over the western Bering
through Saturday afternoon.

&&

.MARINE (Days 3 through 5: Saturday through Monday)...

Gulf of Alaska: A low exits the Southeast Gulf Sun. Model tracks
differ slightly, but confidence is good through Mon. Widespread
westerly gale force winds and waves with high end gale force gusts
are expected over the Gulf Sat. These will diminish to small
craft winds Sun, and continue weakening for Mon. Wave heights to
21 feet Sat move across the Gulf, subsiding to 10 feet Sun. They
continue to subside as high pressure moves into the Gulf through
Mon.

Bering Sea: Eastern Bering high pressure yields as a front over
the central Bering swings into the northern Bering Mon. The low
with this front moves into the western Bering before retreating
near the Kamchatka Peninsula. Model development is mixed, but
confidence is improving through Mon. Widespread southeast gale
force winds and waves with high end gale force gusts diminish over
the central Bering Sun. Easterly small craft winds continue over
the Bering through Mon. Wave heights to 24 feet over the western
Bering and the Pacific side of the Aleutians through Sun will be
subsiding. Expect waves to 20 feet over the central and eastern
Bering through the forecast period.

&&

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

The long term pattern features an amplified upper level ridge
over the Gulf and southern mainland, while upstream, a deep upper
level low will drop southward from Siberia over the western
Bering. By Monday, the pattern shifts slightly as the ridge moves
eastward and becomes broadened across the Aleutian Chain. As
another low arrives over the western Bering, the ridge becomes
highly amplified once again by Tuesday. This will result in a
pattern change over the Bering with much more warm southerly flow
expected for Tuesday, while for the mainland, a much colder Arctic
airmass remains in place. By Wednesday, the strong ridge continues
to build within close proximity of a deepening upper level low
over the mainland. This, combined with a strong temperature
gradient will likely increase winds across the southwest coast of
Alaska. This setup also results in a somewhat regressive pattern,
as several upper level waves will steer systems from east to west
through the middle of next week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale: 165 173 175 176 178 185 412 413.
Heavy Freezing Spray: 160 180 185.

&&

SYNOPSIS AND MODEL DISCUSSION...MIC
SOUTHCENTRAL ALASKA...PJS
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AH
MARINE/LONG TERM...KZ/KO