Hurricane Force Wind Warning 16, NWS Anchorage, AK

089 
FZAK52 PAFC 261254
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
354 AM AKST Sat Dec 26 2020

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.

PKZ199-270145-
354 AM AKST Sat Dec 26 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

There is a 992 mb low over Bristol Bay Sat morning. The low will
quickly move inland. There is a weak ridge of high pressure over
Cold Bay. There is major North Pacific of 938 mb near Adak Sun 
morning. This low will move into the Central Bering 200 nm west of
St Paul with an estimated pressure of 950 mb.

$$

PKZ150-270145-
South of the AK Peninsula Sitkinak to Castle Cape-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TODAY...W wind 30 kt becoming SW 20 kt in the afternoon. Seas
12 ft.
.TONIGHT...S winds 30 kt in the evening becoming SE 50 kt. Seas 11 
ft building to 21 ft after midnight. Rain.
.SUN...S wind 45 kt diminishing to 30 kt in the afternoon. Seas
22 ft. Rain.
.SUN NIGHT...S wind 30 kt. Seas 19 ft.
.MON THROUGH TUE...SE wind 25 kt. Seas 19 ft.
.WED...E wind 15 kt. Seas 13 ft.

$$

PKZ155-270145-
South of the AK Peninsula Castle Cape to Cape Sarichef-
354 AM AKST Sat Dec 26 2020

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 30 kt becoming SE 50 kt in the afternoon, Seas
10 ft building to 16 ft in the afternoon. From the Shumagin
Islands E, S wind 30 kt, Seas 12 ft. Rain.
.TONIGHT...SE wind 50 kt becoming S 30 kt after midnight. From the
Shumagin Islands E, SE wind 50 kt. Seas 20 ft. Rain.
.SUN...S wind 30 kt. Seas 21 ft.
.SUN NIGHT...S wind 30 kt. Seas 29 ft.
.MON...S wind 30 kt. Seas 27 ft.
.TUE...S wind 20 kt. Seas 19 ft.
.WED...SE wind 25 kt. Seas 15 ft.

$$

PKZ160-270145-
Bristol Bay-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT AND SUNDAY...

.TODAY...W wind 25 kt becoming SW 15 kt in the afternoon. Seas 8
ft subsiding to 4 ft in the afternoon. Freezing spray.
.TONIGHT...SE wind 25 kt in the evening increasing to 50 kt. Seas 7 
ft building to 12 ft after midnight.
.SUN...SE wind 50 kt diminishing to 30 kt in the afternoon. Seas
12 ft subsiding to 7 ft in the afternoon. Rain.
.SUN NIGHT...SE wind 25 kt. Seas 7 ft.
.MON...SE wind 30 kt. Seas 8 ft.
.TUE...SE wind 25 kt. Seas 5 ft.
.WED...E wind 15 kt. Seas 5 ft.

$$

PKZ165-270145-
Port Heiden to Cape Sarichef-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TODAY...S wind 30 kt becoming SE 45 kt in the afternoon. From
Port Moller E, SW wind 15 kt becoming SE 30 kt in the afternoon. 
Seas 11 ft.
.TONIGHT...SE wind 50 kt becoming S 35 kt after midnight. From
Port Moller E, SE wind 35 kt in the evening increasing to 50 kt. 
Seas 13 ft. Rain.
.SUN...S wind 40 kt except SE 30 kt from Port Moller E. Seas 10
ft.
.SUN NIGHT...S wind 40 kt. Seas 12 ft.
.MON...SE wind 35 kt. Seas 12 ft.
.TUE THROUGH WED...E wind 20 kt. Seas 8 ft.

$$

PKZ170-270145-
Cape Sarichef to Nikolski Bering Side-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TODAY...

.TODAY...SE wind 50 kt. Seas 16 ft. Rain.
.TONIGHT...S wind 40 kt. Seas 14 ft. Rain.
.SUN...S wind 40 kt. Seas 18 ft.
.SUN NIGHT...S wind 40 kt. Seas 20 ft.
.MON...S wind 40 kt. Seas 17 ft.
.TUE...S wind 25 kt. Seas 10 ft.
.WED...E wind 20 kt. Seas 9 ft.

$$

PKZ171-270145-
Unalaska Bay-
354 AM AKST Sat Dec 26 2020

...GALE WARNING TODAY AND SUNDAY...

.TODAY...SE wind 45 kt diminishing to 35 kt in the afternoon. Seas 7
ft subsiding to 5 ft in the afternoon. Rain.
.TONIGHT...S wind 25 kt. Seas 4 ft. Rain.
.SUN...S wind 35 kt. Seas 5 ft. Rain showers.
.SUN NIGHT...S wind 30 kt. Seas 5 ft.
.MON...S wind 30 kt. Seas 5 ft.
.TUE...S wind 15 kt. Seas 2 ft.
.WED...E wind 15 kt. Seas 2 ft.

$$

PKZ172-270145-
Cape Sarichef to Nikolski Pacific Side-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TODAY...

.TODAY...SE wind 50 kt becoming SW 40 kt in the afternoon. Seas 20 
ft. Rain.
.TONIGHT...S wind 40 kt. Seas 21 ft. Rain.
.SUN...S wind 45 kt. Seas 38 ft. Rain showers.
.SUN NIGHT...S wind 40 kt. Seas 38 ft.
.MON...S wind 40 kt. Seas 29 ft.
.TUE...S wind 20 kt. Seas 20 ft.
.WED...E wind 20 kt. Seas 16 ft.

$$

PKZ173-270145-
Nikolski to Seguam Island Bering Side-
354 AM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY...

.TODAY...SE wind 45 kt becoming S 35 kt in the afternoon. Seas
16 ft. Rain.
.TONIGHT...S wind 40 kt. Seas 13 ft building to 18 ft after
midnight. Widespread rain showers.
.SUN...S wind 40 kt. Seas 25 ft. Widespread rain showers.
.SUN NIGHT...S wind 45 kt. Seas 24 ft.
.MON...S wind 35 kt. Seas 19 ft.
.TUE...S wind 30 kt. Seas 13 ft.
.WED...N wind 15 kt. Seas 10 ft.

$$

PKZ174-270145-
Nikolski to Seguam Island Pacific Side-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TODAY...

.TODAY...SE wind 50 kt becoming S 35 kt in the afternoon. Seas
20 ft. Rain.
.TONIGHT...S wind 45 kt. Seas 20 ft building to 34 ft after
midnight. Widespread rain showers.
.SUN...S wind 45 kt. Seas 42 ft. Widespread rain showers.
.SUN NIGHT...SW wind 45 kt. Seas 41 ft.
.MON...S wind 45 kt. Seas 30 ft.
.TUE...S wind 25 kt. Seas 21 ft.
.WED...W wind 15 kt. Seas 15 ft.

$$

PKZ175-270145-
Seguam Island to Adak Bering Side-
354 AM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY...

.TODAY...SE wind 45 kt becoming S 30 kt in the afternoon. Seas
16 ft. Rain.
.TONIGHT...SE wind 35 kt. Seas 13 ft. Widespread rain showers.
.SUN...SW wind 40 kt. Seas 14 ft. Widespread rain showers.
.SUN NIGHT...SW wind 40 kt. Seas 15 ft.
.MON THROUGH TUE...SW wind 30 kt. Seas 13 ft.
.WED...SW wind 20 kt. Seas 10 ft.

$$

PKZ176-270145-
Seguam Island to Adak Pacific Side-
354 AM AKST Sat Dec 26 2020

...STORM WARNING SUNDAY...

.TODAY...S wind 45 kt. Seas 21 ft. Rain.
.TONIGHT...S wind 45 kt. Seas 29 ft building to 40 ft after 
midnight. Widespread rain showers.
.SUN...SW wind 50 kt. Seas 42 ft. Widespread rain showers.
.SUN NIGHT...SW wind 50 kt. Seas 40 ft.
.MON...SW wind 40 kt. Seas 29 ft.
.TUE...SW wind 30 kt. Seas 22 ft.
.WED...W wind 20 kt. Seas 13 ft.

$$

PKZ177-270145-
Adak to Kiska-
354 AM AKST Sat Dec 26 2020

...GALE WARNING TODAY AND SUNDAY...

.TODAY...SW wind 40 kt becoming SE in the afternoon. Seas 17 ft 
Bering side...25 ft Pacific side. Rain.
.TONIGHT...NE wind 30 kt becoming NW after midnight. Seas 18 ft 
Bering side... 32 ft Pacific side. Widespread rain showers.
.SUN...NW wind 35 kt. Seas 17 ft Bering side... 30 ft Pacific side.
Rain showers.
.SUN NIGHT...W wind 25 kt. Seas 25 ft.
.MON...W wind 35 kt. Seas 22 ft.
.TUE...SW wind 35 kt. Seas 22 ft.
.WED...SW wind 25 kt. Seas 17 ft.

$$

PKZ178-270145-
Kiska to Attu-
354 AM AKST Sat Dec 26 2020

...HURRICANE FORCE WIND WARNING TODAY...

.TODAY...SE wind 60 kt becoming E 20 kt in the afternoon. From
Shemya W, NE wind 65 kt becoming N 50 kt in the afternoon. Seas
27 ft. Widespread rain showers and snow.
.TONIGHT...N wind 20 kt except N 45 kt from Shemya W. Seas 29 ft
Bering side...23 ft Pacific side. Snow with rain.
.SUN...NW wind 35 kt. Seas 23 ft. Snow showers.
.SUN NIGHT...NW wind 35 kt. Seas 24 ft.
.MON...NW wind 35 kt. Seas 24 ft.
.TUE...SW wind 35 kt. Seas 20 ft.
.WED...SW wind 30 kt. Seas 18 ft.

$$

PKZ179-270145-
Pribilof Islands Near Shore Waters-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TODAY...

.TODAY...SE wind 35 kt becoming E 50 kt in the afternoon. Seas 10
ft building to 18 ft in the afternoon. Snow and rain.
.TONIGHT...E wind 45 kt becoming S 25 kt after midnight. Seas 19
ft. Rain.
.SUN...SE wind 30 kt. Seas 18 ft. Rain showers.
.SUN NIGHT...SE wind 35 kt. Seas 19 ft.
.MON...SE wind 30 kt. Seas 19 ft.
.TUE...SE wind 25 kt. Seas 16 ft.
.WED...E wind 15 kt. Seas 11 ft.

$$

PKZ180-270145-
Kuskokwim Delta and Etolin Strait-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TODAY...SW wind 15 kt becoming SE 25 kt in the afternoon. Seas
6 ft. Freezing spray in ice free waters in the afternoon.
.TONIGHT...E wind 35 kt in the evening increasing to 50 kt. Seas 12 
ft building to 17 ft after midnight. Snow and rain.
.SUN...SE wind 45 kt diminishing to 30 kt in the afternoon. Seas
14 ft. Snow.
.SUN NIGHT...SE wind 30 kt. Seas 12 ft.
.MON...SE wind 30 kt. Seas 12 ft.
.TUE THROUGH WED...E wind 20 kt. Seas 9 ft.

$$

PKZ181-270145-
North and West of Nunivak Island-
354 AM AKST Sat Dec 26 2020

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

.TODAY...S wind 15 kt becoming SE 25 kt in the afternoon. Seas in
ice free waters 4 ft. Freezing spray.
.TONIGHT...E wind 45 kt. Seas in ice free waters 9 ft. Heavy
freezing spray. Snow.
.SUN...E wind 45 kt diminishing to 30 kt in the afternoon. Seas 10 
ft. Freezing spray. Snow.
.SUN NIGHT...SE wind 30 kt. Seas in ice free waters 7 ft.
.MON...SE wind 25 kt. Seas in ice free waters 8 ft.
.TUE THROUGH WED...E wind 20 kt. Seas in ice free waters 5 ft.

$$

PKZ185-270145-
Saint Matthew Island Waters-
354 AM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT AND SUNDAY...

.TODAY...E of Saint Matthew Island, E wind 15 kt increasing to 30
kt in the afternoon. W of Saint Matthew Island, NE wind 40 kt. Seas 
12 ft. Freezing spray.
.TONIGHT...NE wind 50 kt. Seas 16 ft building to 22 ft after
midnight. Freezing spray.
.SUN...NE wind 50 kt. Seas 25 ft. Freezing spray N of Saint Matthew
Island. Snow and rain.
.SUN NIGHT...E wind 45 kt. Seas 22 ft.
.MON...E wind 30 kt. Seas 17 ft.
.TUE...E wind 30 kt. Seas 13 ft.
.WED...E wind 25 kt. Seas 11 ft.

$$

040 
FZAK52 PAFC 270054
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
354 PM AKST Sat Dec 26 2020

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.

PKZ199-271415-
354 PM AKST Sat Dec 26 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 938 mb low 280 nm northeast of Adak will move 286 nm southwest 
of Shemya at 957 mb on Mon afternoon.

$$

PKZ150-271415-
South of the AK Peninsula Sitkinak to Castle Cape-
354 PM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TONIGHT...S wind 25 kt becoming SE wind 50 kt after midnight. 
Seas 11 ft building to 20 ft after midnight. Rain and snow.
.SUN...S wind 45 kt diminishing to 25 kt in the afternoon. 
Seas 21 ft.
.SUN NIGHT...S wind 30 kt. Seas 21 ft.
.MON...SE wind 25 kt. Seas 23 ft.
.MON NIGHT...E wind 25 kt. Seas 18 ft.
.TUE...SE wind 35 kt. Seas 16 ft.
.WED THROUGH THU...E wind 15 kt. Seas 13 ft.

$$

PKZ155-271415-
South of the AK Peninsula Castle Cape to Cape Sarichef-
354 PM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TONIGHT...SE wind 50 kt becoming S 35 kt after midnight. 
From the Shumagin Islands E, SE wind 50 kt. Seas 21 ft. Rain.
.SUN...S wind 35 kt. Seas 18 ft building to 25 ft in the
afternoon. From the Shumagin Islands E, seas 19 ft. Rain showers.
.SUN NIGHT...S wind 35 kt. Seas 32 ft except 27 ft from the
Shumagin Islands E.
.MON...S wind 30 kt. Seas 28 ft.
.MON NIGHT...NW wind 25 kt. Seas 20 ft.
.TUE...SW wind 30 kt. Seas 17 ft.
.WED...SE wind 25 kt. Seas 15 ft.
.THU...E wind 20 kt. Seas 15 ft.

$$

PKZ160-271415-
Bristol Bay-
354 PM AKST Sat Dec 26 2020

...STORM WARNING THROUGH SUNDAY...

.TONIGHT...E wind 35 kt becoming SE 50 kt after midnight. 
Seas in ice free waters 7 ft building to 12 ft after midnight. 
Rain and snow.
.SUN...SE wind 50 kt diminishing to 35 kt in the afternoon. 
Seas in ice free waters 11 ft subsiding to 6 ft in the afternoon.
.SUN NIGHT...SE wind 30 kt. Seas in ice free waters 7 ft.
.MON...SE wind 30 kt. Seas in ice free waters 8 ft.
.MON NIGHT...E wind 30 kt. Seas in ice free waters 7 ft.
.TUE...E wind 20 kt. Seas in ice free waters 5 ft.
.WED...E wind 15 kt. Seas in ice free waters 5 ft.
.THU...E wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ165-271415-
Port Heiden to Cape Sarichef-
354 PM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TONIGHT...SE wind 50 kt becoming S 35 kt after midnight. 
From Port Moller E, SE wind 50 kt. Seas 13 ft. Rain and snow.
.SUN...S wind 40 kt except S 30 kt from Port Moller E. Seas 11 ft.
.SUN NIGHT...S wind 40 kt except S 35 kt from Port Moller E. 
Seas 12 ft.
.MON AND MON NIGHT...SE wind 30 kt. Seas 11 ft.
.TUE THROUGH THU...E wind 20 kt. Seas 8 ft.

$$

PKZ170-271415-
Cape Sarichef to Nikolski Bering Side-
354 PM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...S wind 40 kt. Seas 14 ft.
.SUN...S wind 40 kt. Seas 19 ft. Rain showers.
.SUN NIGHT...S wind 40 kt. Seas 20 ft.
.MON...S wind 40 kt. Seas 17 ft.
.MON NIGHT...S wind 35 kt. Seas 14 ft.
.TUE...S wind 30 kt. Seas 12 ft.
.WED...E wind 20 kt. Seas 9 ft.
.THU...SE wind 20 kt. Seas 15 ft.

$$

PKZ171-271415-
Unalaska Bay-
354 PM AKST Sat Dec 26 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...S wind 25 kt. Seas 5 ft. Widespread rain showers.
.SUN AND SUN NIGHT...S wind 30 kt. Seas 5 ft. Widespread rain 
showers.
.MON...S wind 30 kt. Seas 5 ft.
.MON NIGHT...S wind 25 kt. Seas 4 ft.
.TUE...S wind 20 kt. Seas 3 ft.
.WED THROUGH THU...SE wind 15 kt. Seas 2 ft.

$$

PKZ172-271415-
Cape Sarichef to Nikolski Pacific Side-
354 PM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...S wind 40 kt. Seas 21 ft. Widespread rain showers.
.SUN...S wind 45 kt. Seas 38 ft. Widespread rain showers.
.SUN NIGHT...SW wind 45 kt. Seas 38 ft.
.MON...S wind 40 kt. Seas 30 ft.
.MON NIGHT...S wind 30 kt. Seas 24 ft.
.TUE...S wind 30 kt. Seas 21 ft.
.WED...E wind 20 kt. Seas 16 ft.
.THU...SE wind 20 kt. Seas 25 ft.

$$

PKZ173-271415-
Nikolski to Seguam Island Bering Side-
354 PM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...S wind 30 kt increasing to 40 kt after midnight. 
Seas 12 ft building to 18 ft after midnight. Widespread rain 
showers.
.SUN...S wind 40 kt. Seas 25 ft. Widespread rain showers.
.SUN NIGHT...S wind 45 kt. Seas 22 ft. Rain showers.
.MON...S wind 35 kt. Seas 19 ft.
.MON NIGHT...S wind 45 kt. Seas 21 ft.
.TUE...SW wind 25 kt. Seas 13 ft.
.WED...N wind 15 kt. Seas 10 ft.
.THU...SE wind 25 kt. Seas 19 ft.

$$

PKZ174-271415-
Nikolski to Seguam Island Pacific Side-
354 PM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...S wind 35 kt increasing to 45 kt after midnight. 
Seas 20 ft building to 33 ft after midnight. Widespread rain 
showers.
.SUN...SW wind 45 kt. Seas 41 ft. Widespread rain showers.
.SUN NIGHT...SW wind 45 kt. Seas 39 ft. Widespread rain showers.
.MON...S wind 40 kt. Seas 30 ft.
.MON NIGHT...S wind 45 kt. Seas 30 ft.
.TUE...SW wind 30 kt. Seas 22 ft.
.WED...W wind 15 kt. Seas 15 ft.
.THU...S wind 25 kt. Seas 24 ft.

$$

PKZ175-271415-
Seguam Island to Adak Bering Side-
354 PM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SE wind 35 kt. Seas 13 ft. Widespread rain showers.
.SUN...W wind 35 kt. Seas 13 ft. Widespread rain showers.
.SUN NIGHT...SW wind 40 kt. Seas 13 ft. Rain showers.
.MON...S wind 35 kt. Seas 13 ft.
.MON NIGHT...SW wind 30 kt. Seas 11 ft.
.TUE...SW wind 25 kt. Seas 12 ft.
.WED...SW wind 20 kt. Seas 10 ft.
.THU...SE wind 25 kt. Seas 15 ft.

$$

PKZ176-271415-
Seguam Island to Adak Pacific Side-
354 PM AKST Sat Dec 26 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...S wind 45 kt. Seas 28 ft building to 40 ft after
midnight. Widespread rain showers.
.SUN...SW wind 45 kt. Seas 40 ft. Widespread rain showers.
.SUN NIGHT...SW wind 50 kt diminishing to 40 kt after midnight.
Seas 39 ft. Rain showers.
.MON...SW wind 45 kt. Seas 29 ft.
.MON NIGHT...SW wind 30 kt. Seas 28 ft.
.TUE...SW wind 30 kt. Seas 22 ft.
.WED...W wind 20 kt. Seas 13 ft.
.THU...S wind 25 kt. Seas 23 ft.

$$

PKZ177-271415-
Adak to Kiska-
354 PM AKST Sat Dec 26 2020

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 19 ft Bering side... 29 ft 
Pacific side. Widespread rain showers.
.SUN...Bering side, NW wind 25 kt. Pacific side, W wind 35 kt
increasing to 45 kt in the afternoon. Seas 17 ft Bering side...31 ft
Pacific side. Rain showers.
.SUN NIGHT...Bering side, W wind 25 kt, Seas 16 ft. Pacific side, W
wind 45 kt diminishing to 30 kt after midnight, Seas 32 ft subsiding
to 26 ft after midnight. Rain showers and snow showers.
.MON...W wind 30 kt. Seas 22 ft.
.MON NIGHT...W wind 40 kt. Seas 22 ft.
.TUE...SW wind 30 kt. Seas 20 ft.
.WED...SW wind 25 kt. Seas 17 ft.
.THU...SE wind 30 kt. Seas 24 ft.

$$

PKZ178-271415-
Kiska to Attu-
354 PM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TONIGHT...NE wind 20 kt except N 50 kt from Shemya W diminishing 
to 35 kt after midnight. Seas 25 ft. Snow and rain.
.SUN...NW wind 35 kt. Seas 23 ft. Widespread snow and rain
showers.
.SUN NIGHT...NW wind 40 kt. Seas 25 ft. Snow showers and rain
showers.
.MON AND MON NIGHT...W wind 40 kt. Seas 23 ft.
.TUE...W wind 35 kt. Seas 19 ft.
.WED...SW wind 30 kt. Seas 18 ft.
.THU...SE wind 30 kt. Seas 24 ft.

$$

PKZ179-271415-
Pribilof Islands Near Shore Waters-
354 PM AKST Sat Dec 26 2020

...GALE WARNING TONIGHT AND SUNDAY NIGHT...

.TONIGHT...E wind 45 kt becoming SE 25 kt after midnight. 
Seas 19 ft. Widespread rain showers and snow.
.SUN...SE wind 30 kt. Seas 18 ft. Rain showers.
.SUN NIGHT...SE wind 35 kt. Seas 20 ft. Rain showers.
.MON...S wind 35 kt. Seas 18 ft.
.MON NIGHT...SE wind 30 kt. Seas 15 ft.
.TUE...SE wind 35 kt. Seas 16 ft.
.WED...E wind 15 kt. Seas 11 ft.
.THU...E wind 25 kt. Seas 15 ft.

$$

PKZ180-271415-
Kuskokwim Delta and Etolin Strait-
354 PM AKST Sat Dec 26 2020

...STORM WARNING TONIGHT...

.TONIGHT...E wind 35 kt increasing to 50 kt after midnight. 
Seas 12 ft building to 18 ft after midnight. Snow and rain.
.SUN...SE wind 45 kt diminishing to 30 kt in the afternoon. 
Seas 13 ft.
.SUN NIGHT...SE wind 35 kt. Seas 13 ft.
.MON AND MON NIGHT...E wind 30 kt. Seas 12 ft.
.TUE THROUGH WED...E wind 20 kt. Seas 8 ft.
.THU...E wind 25 kt. Seas 8 ft.

$$

PKZ181-271415-
North and West of Nunivak Island-
354 PM AKST Sat Dec 26 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...E wind 35 kt increasing to 45 kt after midnight. Snow.
.SUN...E wind 40 kt diminishing to 30 kt in the afternoon. Snow.
.SUN NIGHT...E wind 35 kt.
.MON AND MON NIGHT...SE wind 30 kt.
.TUE THROUGH WED...E wind 20 kt.
.THU...E wind 25 kt.

$$

PKZ185-271415-
Saint Matthew Island Waters-
354 PM AKST Sat Dec 26 2020

...STORM WARNING THROUGH SUNDAY...

.TONIGHT...NE wind 40 kt increasing to 50 kt after midnight. 
Seas 16 ft building to 23 ft after midnight. Freezing spray. Snow.
.SUN...E of Saint Matthew Island, E wind 45 kt diminishing to 35
kt in the afternoon. W of Saint Matthew Island, NE wind 50 kt. 
Seas 25 ft. Freezing spray. Snow.
.SUN NIGHT...E wind 35 kt. Seas 22 ft. Widespread snow and rain
showers.
.MON...E wind 35 kt. Seas 18 ft.
.MON NIGHT...E wind 30 kt. Seas 15 ft.
.TUE...E wind 35 kt. Seas 15 ft.
.WED...E wind 25 kt. Seas 11 ft.
.THU...E wind 30 kt. Seas 22 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
521 PM AKST Fri Dec 25 2020

.ANALYSIS AND UPPER LEVELS...A quieter pattern continues for most
of Southcentral while things start to become more active over the
Bering. The jet is flowing over a ridge across the AK Range at
about 70 kts (300mb or 30,000'). Out west, the jet is pushing a
strong front towards the Western Aleutians as the jet axis moves
from south to north with max winds at 140 kts. It then flattens
out as it moves across the Central Aleutians with core winds of
160 kts.

The 3 primary systems affecting the sensible weather today are the
front approaching the Western Aleutians, a polar trough over the
Central Bering, and a weak system falling apart over SW AK.
Southeasterly winds are just starting to pick up over the Western
Aleutians. The front will bring a big pattern shift across the
Bering. A push of polar air across the Central Bering associated
with a stacked low near the Pribilof Islands continues to make
for very showery conditions. Finally, a weakening system over SW
AK continues to produce snow showers inland with some rain/snow
showers further south (near King Salmon and Iliamna).

&&

.MODEL DISCUSSION...Models are now in very good agreement and
forecast confidence is increasing from moderate to high. There
remain a few areas of uncertainty that we will continue to watch.
There is strong model agreement on the front moving over the
Western Aleutians and into the Bering. They all generally agree
that the surface low will drop to about 935 mb as it tracks
towards the Rat Islands. The exact track of this low is key as the
area of worst conditions will be in a corridor northwest of the
low center. Models are all now hinting at a polar low developing
in the cold air behind the system, and the exact track of this
feature remains highly uncertain. The timing of the front moving
into SW AK late Sat into Sun is being handled well by the models.
Meanwhile, there is a potent surface low tracking across the
northern Gulf of AK through early Sat. Models have now come into
better agreement with this feature. The remaining uncertainty
revolves around the timing of the warm air and whether or not much
snow makes it across the Chugach into Anchorage.

&&

.AVIATION...
PANC...VFR conditions and light winds will persist. A period of
light snow is possible late in the period beginning late Sat
morning to early afternoon. This should start to lower cigs and
vis towards MVFR conditions. If heavier snow develops, cigs and
vis could drop to IFR by Sat evening.

&&

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

A surface low is expected to move into the northern Gulf of Alaska
tonight and then into Prince William Sound Saturday morning. This
low will produce gale force winds across the northern Gulf with
localized areas of storm force winds. Due to cold air and high
pressure over the Copper Basin at the same time this low moves
into Prince William Sound, pressure gradients will be favorable
for enhanced winds in Thompson Pass, Valdez Arm/Narrows and the
Copper Delta. A Blizzard Warning has been issued for Thompson Pass
from 5am AKST Saturday morning through 1pm AKST Saturday
afternoon for blowing snow reducing visibility to one quarter mile
or less with northeasterly gusts up to 45 mph. Total snow
accumulation for Valdez and Thompson Pass will range between
6-12". Some of the light precipitation associated with this low
may reach Anchorage Saturday afternoon and evening as cross-
barrier flow remains weak and thus minimizes the potential for
downslope off the Chugach Mountains. Total snow accumulation for
Anchorage will range from a light coating to an inch of new snow.

A weakening front will move in from the west Sunday night into
Monday morning. This front will bring rain and snow to Kodiak and
the southern Kenai Peninsula. However, there is low confidence on
the magnitude of the winds as well as the precipitation amounts as
guidance shows significant differences in solutions with respect
to the placement and intensity of this front.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...

An upper level trough across Southwest Alaska will keep showers
lingering through early Saturday. Behind this feature, ridging
builds in across the region, giving a brief break in snowfall
before the pattern shifts Saturday night into Sunday morning.

A Winter Storm Watch for blizzard conditions has been issued for
the Kuskokwim Delta starting Sunday morning as a strong front
approaches the Southwest coast. Strong winds and blowing snow will
accompany this frontal system as it initially moves inland.
Expect reduced visibility to one quarter mile at times in blowing
snow from Kipnuk to Hooper Bay, including Nunivak Island. By
Sunday afternoon, warmer air will begin to usher in, allowing for
snow to quickly change over to all rain.

Areas across the Bristol Bay coast will also see strong winds and
snowfall on the onset of the front, but temperatures will be warm
enough for precipitation to switch over to rain or a mix of rain
and snow much earlier on Sunday. Thus, no winter weather products
have been issued for this area. By late Sunday, the frontal system
will begin to weaken through Monday, with the precipitation
transitioning to a mix of rain and snow showers as the system
tracks eastward across Southwest Alaska.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...

Conditions across the central and eastern Bering and Aleutians
will improve tonight as two surface lows weaken. The bigger story
is a storm force low beginning to move over the western Aleutians
this afternoon. Winds will continue to increase overnight for the
western Aleutians. The potential for a combination of significant
falling and blowing snow by late tonight has lead to the issuance
of a Winter Storm Watch for Shemya. Blowing snow and high winds,
including hurricane force gusts, are possible late tonight
through Saturday evening as cold air filters in behind the
occlusion. The GFS is also trying to develop a polar low, which
would increase the chance for blowing snow and low visibility to
one quarter mile at times for this area.

The leading edge of this frontal system will continue its track
eastward, crossing over the central Aleutians and Pribilofs by
Saturday morning. The Pribilofs will also likely see blowing snow
as the front initially moves over the islands, which will then
transition to rain as warmer air moves in. Strong storm force
winds and widespread precipitation will accompany this system as
it works towards the eastern Bering and Alaska Peninsula through
Saturday evening and then to the Southwest coast for Sunday
morning.

&&

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

Gulf of Alaska: There is increasing confidence in a low tracking
from the North Pacific into the western Gulf on Monday, with a
front crossing the Gulf waters. This will likely produce at least
gale force winds Monday through Monday night, with good potential
for at least a small area of storm force winds. Confidence is low
for Tuesday through Wednesday, though the pattern will remain
favorable for one or more additional lows to move up from the
Pacific.

Aleutians/Bering: Expect a series of gale to storm force lows to
track across the region Monday through Wednesday. It's hard to
say where individual storms will track, but most, if not all, of
the Bering Sea/Aleutians/Southwest Alaska waters will be impacted.

&&

.LONG TERM FORECAST (Days 3 through 7: Monday through Friday)...

Upper level troughing extending from the Bering into the North
Pacific moves through the Gulf next week, fizzling out as it
pushes to the North Gulf Coast. Multiple shortwaves propagating
off a strong Bering low cross south to north across the Southwest
Monday through Wednesday, resulting in bands of precipitation
across the AKPEN and the Mainland. By midweek, the gradient
weakens, transitioning from a closed low to a high amplitude
trough feeding into a North Pacific low. There is weak surface
reflection with this, thus, impacts are expected to be minimal.
The next system of concern will be for a strong low developing
West of Shemya late next week. There is high model discrepancy
with this, where the EC/Canadian models want to move the low to
the north near the Kamchatka Peninsula and become relatively
stationary, while the GFS takes a straight shot eastward into the
Southern Bering. The GFS solution is also significantly stronger,
bringing widespread strong, gusty winds to much of the Bering,
Aleutian Chain and Coastal Southwest. The GFS also shows a
leading front that could result in widespread precipitation across
much of the Mainland with heaviest precipitation likely located
along the AKPEN.

High pressure will dominate the upper levels across Southcentral
through late next week. A short-lived weak surface low tracks
north across the Western Gulf early next week, dissipating as it
crosses the Barren Islands, resulting in some possibly gusty down
Inlet flow.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Heavy Freezing Spray: 160,180,181,185.
Storm Warning: 119,155,170,172-178,180,185,411-413.
Gale Warning: 150,160,165,171,179,181,414.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...MSO
SOUTHCENTRAL ALASKA...ED
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AH
MARINE/LONG TERM...MK/KM