Storm Warning 225, NWS Anchorage, AK

518 
FZAK52 PAFC 200001
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
301 PM AKST Sat Dec 19 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.

PKZ199-201315-
301 PM AKST Sat Dec 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 977 mb low 200 nm east of Saint Paul moves inland near Egegik at
982 mb Sun morning. A front associated with a broad 966 mb North 
Pacific low 350 miles southwest of Attu moves across the western 
Aleutians Sat evening and into the eastern Bering Mon morning. 
This large North Pacific low moves to 150 miles north of Atka at 
949 mb Mon afternoon.

$$

PKZ150-201315-
South of the AK Peninsula Sitkinak to Castle Cape-
301 PM AKST Sat Dec 19 2020

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

.TONIGHT...SW wind 30 kt. Seas 12 ft.
.SUN...W wind 35 kt. Seas 13 ft.
.SUN NIGHT...SW wind 25 kt becoming S 40 kt after midnight. Seas
10 ft building to 15 ft after midnight.
.MON...S wind 50 kt. Seas 21 ft.
.MON NIGHT...S wind 35 kt. Seas 25 ft.
.TUE...S wind 30 kt. Seas 22 ft.
.WED...SW wind 25 kt. Seas 19 ft.
.THU...N wind 15 kt. Seas 12 ft.

$$

PKZ155-201315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 11 ft.
.SUN NIGHT...S wind 50 kt except S 40 kt from the Shumagin Islands
E. Seas 19 ft. From the Shumagin Islands E, seas 11 ft building to
18 ft after midnight. Widespread rain showers.
.MON...S wind 45 kt. Seas 22 ft.
.MON NIGHT...S wind 25 kt. Seas 20 ft.
.TUE...S wind 30 kt. Seas 20 ft.
.WED...W wind 25 kt. Seas 18 ft.
.THU...N wind 15 kt. Seas 11 ft.

$$

PKZ160-201315-
Bristol Bay-
301 PM AKST Sat Dec 19 2020

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

.TONIGHT...S wind 25 kt becoming W 35 kt after midnight. Seas 11
ft. Heavy freezing spray.
.SUN...W wind 35 kt diminishing to 25 kt in the afternoon. Seas
11 ft subsiding to 7 ft in the afternoon. Heavy freezing spray.
.SUN NIGHT...SE wind 25 kt increasing to 35 kt after midnight.
Seas 5 ft building to 8 ft after midnight. Freezing spray.
.MON...SE wind 40 kt. Seas 9 ft.
.MON NIGHT...SE wind 25 kt. Seas 6 ft.
.TUE...SE wind 25 kt. Seas 7 ft.
.WED...SW wind 20 kt. Seas 6 ft.
.THU...N wind 15 kt. Seas 6 ft.

$$

PKZ165-201315-
Port Heiden to Cape Sarichef-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...W wind 35 kt. Seas 13 ft. Freezing spray.
.SUN...S wind 25 kt. From Port Moller E, W wind 30 kt becoming SW
20 kt in the afternoon. Seas 11 ft subsiding to 7 ft in the
afternoon. Freezing spray.
.SUN NIGHT...SE wind 50 kt becoming S 40 kt after midnight. From
Port Moller E, SE wind 30 kt increasing to 40 kt after midnight.
Seas 12 ft.
.MON...S wind 35 kt. Seas 9 ft.
.MON NIGHT...SE wind 20 kt. Seas 7 ft.
.TUE...S wind 25 kt. Seas 9 ft.
.WED...W wind 20 kt. Seas 9 ft.
.THU...NE wind 15 kt. Seas 7 ft.

$$

PKZ170-201315-
Cape Sarichef to Nikolski Bering Side-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...W wind 25 kt. Seas 9 ft.
.SUN...SW wind 25 kt becoming SE 50 kt in the afternoon. From
Unalaska E, SW wind 20 kt becoming S 30 kt in the afternoon. Seas
10 ft. Widespread snow and rain showers.
.SUN NIGHT...S wind 50 kt diminishing to 30 kt after midnight.
Seas 16 ft. Rain and snow.
.MON...S wind 25 kt. Seas 12 ft.
.MON NIGHT...S wind 25 kt. Seas 8 ft.
.TUE THROUGH WED...W wind 15 kt. Seas 11 ft.
.THU...SE wind 15 kt. Seas 9 ft.

$$

PKZ171-201315-
Unalaska Bay-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...W wind 20 kt. Seas 3 ft.
.SUN...SW wind 15 kt becoming SE 30 kt in the afternoon. Seas 2 ft
building to 5 ft in the afternoon. Rain and snow.
.SUN NIGHT...S wind 50 kt diminishing to 25 kt after midnight.
Seas 8 ft subsiding to 3 ft after midnight. Rain.
.MON...SW wind 25 kt. Seas 3 ft.
.MON NIGHT...S wind 20 kt. Seas 3 ft.
.TUE...SW wind 15 kt. Seas 2 ft.
.WED...W wind 10 kt. Seas 3 ft.
.THU...E wind 10 kt. Seas 3 ft.

$$

PKZ172-201315-
Cape Sarichef to Nikolski Pacific Side-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...W wind 25 kt. Seas 11 ft.
.SUN...SW wind 25 kt becoming S 50 kt in the afternoon. Seas 11 ft
building to 16 ft in the afternoon. Widespread rain and snow
showers.
.SUN NIGHT...S wind 55 kt diminishing to 35 kt after midnight.
Seas 23 ft. Rain.
.MON AND MON NIGHT...S wind 25 kt. Seas 20 ft.
.TUE...SW wind 25 kt. Seas 20 ft.
.WED...NW wind 15 kt. Seas 17 ft.
.THU...SE wind 15 kt. Seas 8 ft.

$$

PKZ173-201315-
Nikolski to Seguam Island Bering Side-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY...

.TONIGHT...W wind 25 kt. Seas 9 ft.
.SUN...S wind 35 kt becoming SE 50 kt in the afternoon. Seas 9 ft
building to 17 ft in the afternoon. Widespread rain and snow
showers.
.SUN NIGHT...SW wind 45 kt diminishing to 30 kt after midnight.
Seas 18 ft.
.MON...S wind 25 kt. Seas 15 ft.
.MON NIGHT...SW wind 20 kt. Seas 10 ft.
.TUE...W wind 20 kt. Seas 15 ft.
.WED...W wind 15 kt. Seas 14 ft.
.THU...S wind 20 kt. Seas 10 ft.

$$

PKZ174-201315-
Nikolski to Seguam Island Pacific Side-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY...

.TONIGHT...W wind 25 kt. Seas 13 ft.
.SUN...S wind 50 kt. Seas 13 ft building to 22 ft in the afternoon. 
Widespread rain and snow showers.
.SUN NIGHT...SW wind 45 kt diminishing to 25 kt after midnight.
Seas 23 ft.
.MON...S wind 35 kt. Seas 21 ft.
.MON NIGHT...SW wind 25 kt. Seas 21 ft.
.TUE THROUGH WED...W wind 20 kt. Seas 21 ft.
.THU...SW wind 25 kt. Seas 15 ft.

$$

PKZ175-201315-
Seguam Island to Adak Bering Side-
301 PM AKST Sat Dec 19 2020

...GALE WARNING SUNDAY...

.TONIGHT...W wind 25 kt. Seas 9 ft.
.SUN...SE wind 40 kt diminishing to 30 in the afternoon. Seas 13 ft.
Widespread rain and snow showers.
.SUN NIGHT...SW wind 30 kt. Seas 13 ft.
.MON...S wind 25 kt. Seas 12 ft.
.MON NIGHT...SW wind 20 kt. Seas 9 ft.
.TUE...W wind 25 kt. Seas 23 ft.
.WED...SW wind 25 kt. Seas 16 ft.
.THU...SW wind 30 kt. Seas 11 ft.

$$

PKZ176-201315-
Seguam Island to Adak Pacific Side-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY...

.TONIGHT...S wind 30 kt. Seas 12 ft.
.SUN...SE wind 50 kt diminishing to 35 in the afternoon. Seas 20 ft.
Widespread rain and snow showers.
.SUN NIGHT...SW wind 30 kt. Seas 20 ft.
.MON...SW wind 35 kt. Seas 24 ft.
.MON NIGHT...SW wind 20 kt. Seas 22 ft.
.TUE...W wind 25 kt. Seas 22 ft.
.WED...SW wind 25 kt. Seas 15 ft.
.THU...SW wind 30 kt. Seas 17 ft.

$$

PKZ177-201315-
Adak to Kiska-
301 PM AKST Sat Dec 19 2020

...GALE WARNING THROUGH SUNDAY...

.TONIGHT...SW wind 20 kt becoming SE 40 kt after midnight. Seas 14 ft.
Widespread snow and rain showers.
.SUN...SE wind 35 kt becoming S 20 kt in the afternoon. Seas 13 ft.
.SUN NIGHT...S wind 25 kt. Seas 19 ft.
.MON...NW wind 35 kt. Seas 21 ft.
.MON NIGHT...W wind 25 kt. Seas 21 ft.
.TUE...W wind 25 kt. Seas 23 ft.
.WED...SW wind 25 kt. Seas 16 ft.
.THU...W wind 30 kt. Seas 18 ft.

$$

PKZ178-201315-
Kiska to Attu-
301 PM AKST Sat Dec 19 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 10 ft building to 15 ft after midnight.
.SUN...S wind 30 kt. Seas 17 ft.
.SUN NIGHT...NE wind 25 kt. Seas 18 ft.
.MON...N wind 30 kt. Seas 19 ft.
.MON NIGHT...NW wind 30 kt. Seas 25 ft.
.TUE...W wind 30 kt. Seas 22 ft.
.WED...SW wind 30 kt. Seas 18 ft.
.THU...W wind 30 kt. Seas 18 ft.

$$

PKZ179-201315-
Pribilof Islands Near Shore Waters-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 7 ft. Freezing spray.
.SUN...SW wind 20 kt becoming SE in the afternoon. Seas 6 ft. 
Freezing spray.
.SUN NIGHT...E wind 50 kt. Seas 19 ft. Snow.
.MON...S wind 30 kt. Seas 16 ft.
.MON NIGHT...NE wind 15 kt. Seas 10 ft.
.TUE...NW wind 20 kt. Seas 10 ft.
.WED...W wind 20 kt. Seas 10 ft.
.THU...SE wind 15 kt. Seas 8 ft.

$$

PKZ180-201315-
Kuskokwim Delta and Etolin Strait-
301 PM AKST Sat Dec 19 2020

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

.TONIGHT...NW wind 30 kt. Seas in ice free waters 8 ft. Heavy freezing
spray.
.SUN...NW wind 25 kt becoming S 15 kt in the afternoon. Seas in ice 
free waters 6 ft. Freezing spray.
.SUN NIGHT...E wind 30 kt increasing to 40 kt after midnight. Seas
in ice free waters 6 ft building to 12 ft after midnight. Freezing
spray.
.MON...SE wind 40 kt. Seas in ice free waters 13 ft.
.MON NIGHT...SE wind 20 kt. Seas in ice free waters 8 ft.
.TUE...NE wind 20 kt. Seas in ice free waters 8 ft.
.WED...W wind 15 kt. Seas in ice free waters 8 ft.
.THU...NE wind 15 kt. Seas in ice free waters 6 ft.

$$

PKZ181-201315-
North and West of Nunivak Island-
301 PM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING SUNDAY NIGHT...

.TONIGHT...N wind 15 kt. Seas in ice free waters 3 ft.
.SUN...SE wind 15 kt. Seas in ice free waters 3 ft.
.SUN NIGHT...E wind 30 kt increasing to 50 kt after midnight. Seas
in ice free waters 4 ft building to 9 ft after midnight. Heavy
freezing spray. Snow.
.MON...E wind 45 kt. Seas in ice free waters 9 ft.
.MON NIGHT...NE wind 30 kt. Seas in ice free waters 7 ft.
.TUE...N wind 15 kt. Seas in ice free waters 4 ft.
.WED...W wind 15 kt. Seas in ice free waters 6 ft.
.THU...SE wind 20 kt. Seas in ice free waters 6 ft.

$$

PKZ185-201315-
Saint Matthew Island Waters-
301 PM AKST Sat Dec 19 2020

...HEAVY FREEZING SPRAY WARNING SUNDAY NIGHT...
...STORM WARNING SUNDAY NIGHT...

.TONIGHT...Variable wind 10 kt E of Saint Matthew Island...N 20 kt
W of Saint Matthew Island. Seas 6 ft. Freezing spray.
.SUN...Variable wind 10 kt E of Saint Matthew Island...E 20 kt W
of Saint Matthew Island. Seas 6 ft. Freezing spray.
.SUN NIGHT...E of Saint Matthew Island, 55 kt after midnight. Wind
E 30 kt in the evening. W of Saint Matthew Island, NE wind 40 kt 
after midnight. Seas 8 ft building to 13 ft after midnight. Heavy freezing
spray.
.MON...NE wind 50 kt. Seas 21 ft.
.MON NIGHT...N wind 40 kt. Seas 19 ft.
.TUE...NW wind 30 kt. Seas 19 ft.
.WED...W wind 20 kt. Seas 11 ft.
.THU...SE wind 20 kt. Seas 9 ft.

$$

089 
FZAK52 PAFC 201254
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
354 AM AKST Sun Dec 20 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.

PKZ199-210215-
354 AM AKST Sun Dec 20 2020

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 984 mb over Bristol Bay moves inland Sun morning. A front 
associated with a complex 961 mb North Pacific low centered 370 nm 
southwest of Attu moves from the western Aleutians Sun morning to the
central Aleutians Sun evening. A 979 mb low develops along the front
260 nm southwest of Adak Sun morning and moves to 185 nm north of 
Adak at 949 mb by Mon morning then to 215 nm northwest of Adak at 947
mb by Tue morning.

$$

PKZ150-210215-
South of the AK Peninsula Sitkinak to Castle Cape-
354 AM AKST Sun Dec 20 2020

...GALE WARNING THROUGH MONDAY...

.TODAY...W wind 25 kt early increasing to 35 kt. Seas 13 ft.
.TONIGHT...SW wind 25 kt becoming S 40 kt after midnight. Seas 10 ft
building to 15 ft after midnight.
.MON...SE wind 45 kt. Seas 19 ft building to 25 ft in the afternoon.
Rain.
.MON NIGHT...S wind 45 kt. Seas 27 ft.
.TUE...SW wind 30 kt. Seas 19 ft.
.WED...S wind 25 kt. Seas 17 ft.
.THU...W wind 15 kt. Seas 12 ft.

$$

PKZ155-210215-
South of the AK Peninsula Castle Cape to Cape Sarichef-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...

.TODAY...W wind 20 kt early increasing to 30 kt. Seas 11 ft.
.TONIGHT...S wind 50 kt except S 40 kt from the Shumagin Islands E. 
Seas 21 ft. From the Shumagin Islands E, seas 12 ft building to 19 ft
after midnight. Widespread rain showers and snow.
.MON...S wind 40 kt diminishing to 30 kt in the afternoon. From the 
Shumagin Islands E, S wind 45 kt becoming SE 40 kt in the afternoon. 
Seas 23 ft. Widespread rain showers.
.MON NIGHT...SW wind 30 kt. Seas 21 ft.
.TUE...SW wind 30 kt. Seas 20 ft.
.WED...SW wind 20 kt. Seas 17 ft.
.THU...W wind 15 kt. Seas 11 ft.

$$

PKZ160-210215-
Bristol Bay-
354 AM AKST Sun Dec 20 2020

...GALE WARNING THROUGH MONDAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...W wind 35 kt diminishing to 25 kt in the afternoon. Seas
11 ft subsiding to 7 ft in the afternoon. Heavy freezing spray.
.TONIGHT...SE wind 25 kt increasing to 35 kt after midnight. Seas
8 ft. Freezing spray.
.MON...SE wind 35 kt. Seas 8 ft. Rain showers.
.MON NIGHT...SE wind 40 kt. Seas 9 ft.
.TUE...S wind 25 kt. Seas 8 ft.
.WED...S wind 15 kt. Seas 8 ft.
.THU...NW wind 10 kt. Seas 5 ft.

$$

PKZ165-210215-
Port Heiden to Cape Sarichef-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...

.TODAY...S wind 25 kt. From Port Moller E, W wind 30 kt becoming
SW 20 kt in the afternoon. Seas 11 ft subsiding to 7 ft in the 
afternoon. Freezing spray.
.TONIGHT...SE wind 50 kt becoming S 40 kt after midnight. From Port
Moller E, SE wind 30 kt increasing to 40 kt after midnight. Seas 11 
ft.
.MON...SE wind 30 kt. Seas 8 ft.
.MON NIGHT...S wind 25 kt. Seas 7 ft.
.TUE...SW wind 30 kt. Seas 16 ft.
.WED...SW wind 20 kt. Seas 13 ft.
.THU...SW wind 15 kt. Seas 10 ft.

$$

PKZ170-210215-
Cape Sarichef to Nikolski Bering Side-
354 AM AKST Sun Dec 20 2020

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 25 kt becoming SE 50 kt in the afternoon. From
Unalaska E, SW wind 20 kt becoming S 30 kt in the afternoon. Seas
10 ft. Widespread snow showers.
.TONIGHT...S wind 50 kt diminishing to 30 kt after midnight. Seas
16 ft. Snow.
.MON...SW wind 25 kt. Seas 10 ft.
.MON NIGHT...SW wind 20 kt. Seas 10 ft.
.TUE...SW wind 35 kt. Seas 20 ft.
.WED...W wind 25 kt. Seas 13 ft.
.THU...S wind 20 kt. Seas 12 ft.

$$

PKZ171-210215-
Unalaska Bay-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...

.TODAY...SW wind 15 kt becoming SE 30 kt in the afternoon. Seas 2
ft building to 5 ft in the afternoon. Snow.
.TONIGHT...S wind 50 kt diminishing to 25 kt after midnight. Seas
8 ft subsiding to 3 ft after midnight. Rain and snow.
.MON...SW wind 15 kt. Seas 2 ft.
.MON NIGHT...SW wind 15 kt. Seas 2 ft.
.TUE...SW wind 25 kt. Seas 4 ft.
.WED...W wind 20 kt. Seas 3 ft.
.THU...S wind 15 kt. Seas 2 ft.

$$

PKZ172-210215-
Cape Sarichef to Nikolski Pacific Side-
354 AM AKST Sun Dec 20 2020

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 25 kt becoming S 50 kt in the afternoon. Seas 11
ft building to 16 ft in the afternoon. Widespread rain and snow 
showers.
.TONIGHT...S wind 55 kt diminishing to 35 kt after midnight. Seas
24 ft. Rain.
.MON...SW wind 25 kt. Seas 19 ft.
.MON NIGHT...SW wind 30 kt. Seas 21 ft.
.TUE...SW wind 45 kt. Seas 21 ft.
.WED...W wind 20 kt. Seas 16 ft.
.THU...S wind 20 kt. Seas 14 ft.

$$

PKZ173-210215-
Nikolski to Seguam Island Bering Side-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TODAY...

.TODAY...S wind 35 kt becoming SE 50 kt in the afternoon. Seas 9 ft 
building to 16 ft in the afternoon. Widespread snow and rain showers.
.TONIGHT...SW wind 45 kt diminishing to 30 kt after midnight. Seas
16 ft.
.MON...S wind 25 kt. Seas 14 ft.
.MON NIGHT...SW wind 25 kt. Seas 18 ft.
.TUE...W wind 35 kt. Seas 22 ft.
.WED...SW wind 25 kt. Seas 14 ft.
.THU...SW wind 20 kt. Seas 12 ft.

$$

PKZ174-210215-
Nikolski to Seguam Island Pacific Side-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TODAY...

.TODAY...S wind 20 kt early increasing to 50 kt. Seas 13 ft building
to 22 ft in the afternoon. Widespread rain and snow showers.
.TONIGHT...SW wind 45 kt diminishing to 25 kt after midnight. Seas
22 ft.
.MON...S wind 25 kt. Seas 21 ft. Snow showers.
.MON NIGHT...SW wind 25 kt. Seas 22 ft.
.TUE...W wind 45 kt. Seas 23 ft.
.WED THROUGH THU...SW wind 25 kt. Seas 17 ft.

$$

PKZ175-210215-
Seguam Island to Adak Bering Side-
354 AM AKST Sun Dec 20 2020

...GALE WARNING TODAY...

.TODAY...SE wind 20 kt early increasing to 40 kt. Seas 12 ft. 
Widespread snow showers.
.TONIGHT...SW wind 30 kt. Seas 10 ft.
.MON...S wind 25 kt. Seas 12 ft.
.MON NIGHT...W wind 40 kt. Seas 23 ft.
.TUE...NW wind 35 kt. Seas 24 ft.
.WED...SW wind 25 kt. Seas 15 ft.
.THU...W wind 25 kt. Seas 11 ft.

$$

PKZ176-210215-
Seguam Island to Adak Pacific Side-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TODAY...

.TODAY...SE wind 25 kt early increasing to 50 kt. Seas 18 ft. 
Widespread rain and snow showers.
.TONIGHT...SW wind 30 kt. Seas 19 ft.
.MON...S wind 30 kt. Seas 21 ft.
.MON NIGHT...W wind 30 kt. Seas 20 ft.
.TUE...W wind 40 kt. Seas 20 ft.
.WED...SW wind 20 kt. Seas 15 ft.
.THU...W wind 25 kt. Seas 16 ft.

$$

PKZ177-210215-
Adak to Kiska-
354 AM AKST Sun Dec 20 2020

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt becoming S 25 kt in the afternoon. Seas
14 ft.
.TONIGHT...S wind 25 kt. Seas 12 ft Bering side...19 ft Pacific 
side.
.MON...N wind 30 kt. Seas 18 ft.
.MON NIGHT...NW wind 35 kt. Seas 22 ft.
.TUE...NW wind 35 kt. Seas 22 ft.
.WED THROUGH THU...W wind 25 kt. Seas 15 ft.

$$

PKZ178-210215-
Kiska to Attu-
354 AM AKST Sun Dec 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...S wind 30 kt. Seas 16 ft.
.TONIGHT...NE wind 25 kt. Seas 17 ft.
.MON...N wind 30 kt. Seas 16 ft.
.MON NIGHT...NW wind 30 kt. Seas 20 ft.
.TUE...NW wind 30 kt. Seas 20 ft.
.WED THROUGH THU...W wind 20 kt. Seas 14 ft.

$$

PKZ179-210215-
Pribilof Islands Near Shore Waters-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...

.TODAY...SW wind 15 kt becoming SE 25 kt in the afternoon. Seas 6 
ft.
.TONIGHT...SE wind 35 kt in the morning becoming E 50 kt. Seas 8 ft
in the morning building to 15 ft. Rain and snow.
.MON...S wind 30 kt in the morning becoming variable 10 kt. Seas
14 ft.
.MON NIGHT...N wind 15 kt. Seas 9 ft.
.TUE...W wind 25 kt. Seas 14 ft.
.WED THROUGH THU...S wind 20 kt. Seas 14 ft.

$$

PKZ180-210215-
Kuskokwim Delta and Etolin Strait-
354 AM AKST Sun Dec 20 2020

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

.TODAY...NW wind 25 kt becoming S 15 kt in the afternoon. Seas 6 ft. 
Freezing spray.
.TONIGHT...SE wind 20 kt increasing to 40 kt after midnight. Seas 6 
ft building to 10 ft after midnight. Heavy freezing spray.
.MON...SE wind 40 kt. Seas 12 ft. Rain showers and snow.
.MON NIGHT...E wind 30 kt. Seas 11 ft.
.TUE...S wind 30 kt. Seas 11 ft.
.WED...S wind 20 kt. Seas 11 ft.
.THU...S wind 15 kt. Seas 7 ft.

$$

PKZ181-210215-
North and West of Nunivak Island-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND MONDAY...

.TODAY...SE wind 15 kt. Seas in ice free waters 3 ft.
.TONIGHT...E wind 30 kt increasing to 50 kt after midnight. Seas
in ice free waters 4 ft building to 9 ft after midnight. Heavy 
freezing spray. Snow.
.MON...E wind 45 kt diminishing to 30 kt in the afternoon. Seas in
ice free waters 9 ft. Heavy freezing spray. Snow.
.MON NIGHT...E wind 30 kt. Seas in ice free waters 7 ft.
.TUE...S wind 40 kt. Seas in ice free waters 7 ft building to 10 ft
at night.
.WED THROUGH THU...SE wind 20 kt. Seas in ice free waters 9 ft.

$$

PKZ185-210215-
Saint Matthew Island Waters-
354 AM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT AND MONDAY...
...HEAVY FREEZING SPRAY WARNING MONDAY...

.TODAY...Variable wind 10 kt E of Saint Matthew Island...E 20 kt W
of Saint Matthew Island. Seas 7 ft. Freezing spray.
.TONIGHT...E of Saint Matthew Island, 55 kt after midnight. Wind E
30 kt in the evening. W of Saint Matthew Island, NE wind 40 kt
after midnight. Seas 12 ft. Freezing spray.
.MON...NE wind 50 kt diminishing to 40 kt in the afternoon. Seas
20 ft. Heavy freezing spray. Snow.
.MON NIGHT...NE wind 40 kt. Seas 21 ft.
.TUE...NW wind 45 kt. Seas 21 ft.
.WED...SW wind 25 kt. Seas 14 ft.
.THU...SW wind 20 kt. Seas 11 ft.

$$

921 
FZAK52 PAFC 202349
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
249 PM AKST Sun Dec 20 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.

PKZ199-211315-
249 PM AKST Sun Dec 20 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A front associated with a complex 961 mb North Pacific low 
centered 320 nm south of Shemya continues to the eastern 
Aleutians by Sun night which then continues into the Gulf by Mon 
morning. A 964 mb low 130 nm northeast of Adak moves 280 nm north
of Adak and phases with the previous 961 mb low to 949 mb by Mon 
morning. This low continues to 120 nm southeast of Saint Paul at 
955 mb by Tue afternoon.

$$

PKZ150-211315-
South of the AK Peninsula Sitkinak to Castle Cape-
249 PM AKST Sun Dec 20 2020

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SW wind 30 kt becoming S 40 kt after midnight. Seas 10
ft building to 15 ft after midnight. Rain.
.MON...SE wind 45 kt. Seas 23 ft. Rain.
.MON NIGHT...SE wind 45 kt becoming S 35 kt after midnight. Seas
24 ft. Widespread rain showers.
.TUE...SW wind 25 kt. Seas 20 ft.
.TUE NIGHT...SW wind 30 kt. Seas 18 ft.
.WED...S wind 30 kt. Seas 18 ft.
.THU...W wind 15 kt. Seas 13 ft.
.FRI...Variable wind 10 kt. Seas 11 ft.

$$

PKZ155-211315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
249 PM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...

.TONIGHT...S wind 50 kt. From the Shumagin Islands E, S wind 35 kt
increasing to 50 kt after midnight. Seas 22 ft. Rain.
.MON...S wind 45 kt diminishing to 35 kt in the afternoon. Seas
24 ft. Rain.
.MON NIGHT...SW wind 15 kt increasing to 30 kt after midnight.
From the Shumagin Islands E, S wind 25 kt. Seas 19 ft.
.TUE AND TUE NIGHT...SW wind 30 kt. Seas 21 ft.
.WED...SW wind 30 kt. Seas 20 ft.
.THU...W wind 25 kt. Seas 13 ft.
.FRI...W wind 15 kt. Seas 12 ft.

$$

PKZ160-211315-
Bristol Bay-
249 PM AKST Sun Dec 20 2020

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SE wind 20 kt increasing to 35 kt after midnight. Seas
7 ft. Freezing spray.
.MON...SE wind 35 kt. Seas 8 ft.  and snow.
.MON NIGHT...E wind 35 kt. Seas 8 ft. Rain showers.
.TUE...SE wind 20 kt. Seas 6 ft.
.TUE NIGHT...S wind 30 kt. Seas 7 ft.
.WED...S wind 30 kt. Seas 9 ft.
.THU THROUGH FRI...W wind 10 kt. Seas 5 ft.

$$

PKZ165-211315-
Port Heiden to Cape Sarichef-
249 PM AKST Sun Dec 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 40 kt. From Port Moller E, S wind 30 kt
becoming SE 40 kt after midnight. Seas 9 ft. Snow.
.MON...SE wind 30 kt. Seas 8 ft.
.MON NIGHT...S wind 20 kt. Seas 7 ft.
.TUE...SW wind 30 kt. Seas 10 ft.
.TUE NIGHT...S wind 35 kt. Seas 17 ft.
.WED...SW wind 30 kt. Seas 15 ft.
.THU...SW wind 20 kt. Seas 11 ft.
.FRI...W wind 15 kt. Seas 7 ft.

$$

PKZ170-211315-
Cape Sarichef to Nikolski Bering Side-
249 PM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...

.TONIGHT...S wind 50 kt diminishing to 25 kt after midnight. Seas 14 ft.
Snow.
.MON...S wind 25 kt. Seas 9 ft.
.MON NIGHT...S wind 25 kt. Seas 9 ft.
.TUE AND TUE NIGHT...SW wind 40 kt. Seas 22 ft.
.WED...W wind 30 kt. Seas 16 ft.
.THU...S wind 20 kt. Seas 11 ft.
.FRI...W wind 30 kt. Seas 11 ft.

$$

PKZ171-211315-
Unalaska Bay-
249 PM AKST Sun Dec 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...S wind 45 kt diminishing to 10 kt after midnight. Seas 7 ft
subsiding to 2 ft after midnight. Rain and snow.
.MON...S wind 10 kt increasing to 15 kt in the afternoon. Seas 2 ft.
.MON NIGHT...S wind 15 kt. Seas 2 ft.
.TUE...SW wind 25 kt. Seas 4 ft.
.TUE NIGHT...SW wind 30 kt. Seas 5 ft.
.WED...W wind 25 kt. Seas 3 ft.
.THU...S wind 15 kt. Seas 2 ft.
.FRI...W wind 15 kt. Seas 2 ft.

$$

PKZ172-211315-
Cape Sarichef to Nikolski Pacific Side-
249 PM AKST Sun Dec 20 2020

...STORM WARNING TONIGHT...

.TONIGHT...S wind 50 kt diminishing to 30 kt after midnight. Seas 22 ft.
.MON...SW wind 25 kt. Seas 19 ft.
.MON NIGHT...SW wind 30 kt. Seas 21 ft.
.TUE...SW wind 35 kt. Seas 23 ft.
.TUE NIGHT...SW wind 40 kt. Seas 24 ft.
.WED...W wind 30 kt. Seas 20 ft.
.THU...S wind 20 kt. Seas 14 ft.
.FRI...W wind 30 kt. Seas 16 ft.

$$

PKZ173-211315-
Nikolski to Seguam Island Bering Side-
249 PM AKST Sun Dec 20 2020

...GALE WARNING TONIGHT AND MONDAY NIGHT...

.TONIGHT...S wind 40 kt. Seas 17 ft.
.MON...S wind 30 kt. Seas 15 ft.
.MON NIGHT...SW wind 25 kt becoming W 35 kt after midnight. Seas
11 ft building to 17 ft after midnight.
.TUE...W wind 45 kt. Seas 26 ft.
.TUE NIGHT...W wind 40 kt. Seas 24 ft.
.WED...W wind 30 kt. Seas 18 ft.
.THU...SW wind 25 kt. Seas 11 ft.
.FRI...S wind 35 kt. Seas 13 ft.

$$

PKZ174-211315-
Nikolski to Seguam Island Pacific Side-
249 PM AKST Sun Dec 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt. Seas 22 ft.
.MON...S wind 30 kt. Seas 20 ft.
.MON NIGHT...SW wind 30 kt. Seas 22 ft.
.TUE AND TUE NIGHT...W wind 40 kt. Seas 26 ft.
.WED THROUGH THU...SW wind 35 kt. Seas 18 ft.
.FRI...SW wind 30 kt. Seas 19 ft.

$$

PKZ175-211315-
Seguam Island to Adak Bering Side-
249 PM AKST Sun Dec 20 2020

...GALE WARNING TONIGHT AND MONDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 13 ft.
.MON...SW wind 30 kt. Seas 13 ft.
.MON NIGHT...W wind 35 kt increasing to 45 kt after midnight. Seas
24 ft.
.TUE...W wind 50 kt. Seas 29 ft.
.TUE NIGHT...W wind 40 kt. Seas 23 ft.
.WED...SW wind 30 kt. Seas 18 ft.
.THU...W wind 25 kt. Seas 11 ft.
.FRI...S wind 30 kt. Seas 12 ft.

$$

PKZ176-211315-
Seguam Island to Adak Pacific Side-
249 PM AKST Sun Dec 20 2020

...GALE WARNING TONIGHT AND MONDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 20 ft.
.MON...SW wind 30 kt. Seas 21 ft.
.MON NIGHT...W wind 35 kt. Seas 21 ft.
.TUE...W wind 40 kt. Seas 23 ft.
.TUE NIGHT...W wind 45 kt. Seas 22 ft.
.WED THROUGH THU...W wind 30 kt. Seas 17 ft.
.FRI...S wind 30 kt. Seas 20 ft.

$$

PKZ177-211315-
Adak to Kiska-
249 PM AKST Sun Dec 20 2020

...GALE WARNING MONDAY AND MONDAY NIGHT...

.TONIGHT...W wind 25 kt. Seas 18 ft.
.MON...NW wind 35 kt. Seas 20 ft.
.MON NIGHT...NW wind 35 kt increasing to 45 kt after midnight.
Seas 24 ft.
.TUE AND TUE NIGHT...W wind 40 kt. Seas 24 ft.
.WED THROUGH THU...W wind 30 kt. Seas 15 ft.
.FRI...SE wind 30 kt. Seas 16 ft.

$$

PKZ178-211315-
Kiska to Attu-
249 PM AKST Sun Dec 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 17 ft.
.MON...N wind 30 kt. Seas 18 ft.
.MON NIGHT...N wind 30 kt. Seas 19 ft. Freezing spray.
.TUE...NW wind 35 kt. Seas 20 ft.
.TUE NIGHT...W wind 25 kt. Seas 17 ft.
.WED THROUGH THU...W wind 30 kt. Seas 16 ft.
.FRI...E wind 30 kt. Seas 15 ft.

$$

PKZ179-211315-
Pribilof Islands Near Shore Waters-
249 PM AKST Sun Dec 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...E wind 45 kt. Seas 13 ft. Snow with rain.
.MON...S wind 30 kt diminishing to 15 kt in the afternoon. Seas 14 ft.
.MON NIGHT...SE wind 20 kt. Seas 12 ft.
.TUE...SE wind 20 kt. Seas 9 ft.
.TUE NIGHT...W wind 35 kt. Seas 15 ft.
.WED...W wind 40 kt. Seas 19 ft.
.THU...SW wind 20 kt. Seas 11 ft.
.FRI...SW wind 25 kt. Seas 13 ft.

$$

PKZ180-211315-
Kuskokwim Delta and Etolin Strait-
249 PM AKST Sun Dec 20 2020

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

.TONIGHT...E wind 30 kt increasing to 40 kt after midnight. Seas 10 
ft. Heavy freezing spray. Snow.
.MON...SE wind 35 kt. Seas 10 ft. Snow showers.
.MON NIGHT...SE wind 30 kt. Seas 9 ft.
.TUE...S wind 25 kt. Seas 6 ft.
.TUE NIGHT...S wind 30 kt. Seas 12 ft.
.WED...SW wind 35 kt. Seas 13 ft.
.THU...S wind 20 kt. Seas 9 ft.
.FRI...W wind 15 kt. Seas 5 ft.

$$

PKZ181-211315-
North and West of Nunivak Island-
249 PM AKST Sun Dec 20 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...E wind 25 kt increasing to 40 kt after midnight. Snow.
.MON...E wind 40 kt diminishing to 30 kt in the afternoon. Snow.
.MON NIGHT...E wind 30 kt. Snow.
.TUE AND TUE NIGHT...SE wind 25 kt.
.WED THROUGH THU...S wind 30 kt.
.FRI...SW wind 15 kt.

$$

PKZ185-211315-
Saint Matthew Island Waters-
249 PM AKST Sun Dec 20 2020

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

.TONIGHT...E wind 30 kt becoming NE 45 kt after midnight. Seas
12 ft. Heavy freezing spray.
.MON...NE wind 45 kt. Seas 21 ft. Heavy freezing spray. Snow.
.MON NIGHT...NE wind 30 kt E of Saint Matthew Island... NE 45 kt W
of Saint Matthew Island. Seas 20 ft. Heavy freezing spray. Snow.
.TUE...NE wind 40 kt. Seas 20 ft.
.TUE NIGHT...NE wind 35 kt. Seas 18 ft.
.WED...NW wind 30 kt. Seas 13 ft.
.THU...SW wind 30 kt. Seas 10 ft.
.FRI...S wind 25 kt. Seas 10 ft.

$$

134 
FZAK52 PAFC 211258
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
358 AM AKST Mon Dec 21 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.

PKZ199-220145-
358 AM AKST Mon Dec 21 2020

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 948 mb low 195 nm west of Saint Paul remains nearly stationary 
through Tue morning then moves to 75 nm southeast of Saint Paul by 
Wed morning. Its associated front stalls along the Southwest Alaska 
coast Mon afternoon. A 966 mb low forms along the front Mon afternoon
95 nm north of Cold Bay then moves to 85 nm west of Hooper Bay at 
955 mb by Tue morning then to 80 nm west of Gambell by Tue evening.

$$

PKZ150-220145-
South of the AK Peninsula Sitkinak to Castle Cape-
358 AM AKST Mon Dec 21 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 40 kt. Seas 23 ft. Rain.
.TONIGHT...SE wind 45 kt becoming SW 35 kt after midnight. Seas
26 ft. Widespread rain showers.
.TUE...SW wind 25 kt. Seas 20 ft.
.TUE NIGHT...SW wind 30 kt. Seas 18 ft.
.WED...S wind 30 kt. Seas 18 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 13 ft.

$$

PKZ155-220145-
South of the AK Peninsula Castle Cape to Cape Sarichef-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TODAY...

.TODAY...S wind 40 kt. Seas 23 ft. Widespread rain showers.
.TONIGHT...SW wind 30 kt. Seas 19 ft.
.TUE...SW wind 30 kt. Seas 21 ft.
.TUE NIGHT...SW wind 30 kt. Seas 21 ft.
.WED...SW wind 30 kt. Seas 20 ft.
.THU...N wind 20 kt. Seas 10 ft.
.FRI...N wind 15 kt. Seas 10 ft.

$$

PKZ160-220145-
Bristol Bay-
358 AM AKST Mon Dec 21 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE wind 35 kt. Seas 8 ft. Rain and snow.
.TONIGHT...E wind 35 kt. Seas 8 ft.
.TUE...S wind 25 kt. Seas 7 ft.
.TUE NIGHT...S wind 30 kt. Seas 7 ft.
.WED...S wind 30 kt. Seas 9 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 6 ft.

$$

PKZ165-220145-
Port Heiden to Cape Sarichef-
358 AM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...SE wind 20 kt except SE 30 kt from Port Moller E. Seas
8 ft.
.TONIGHT...S wind 25 kt. Seas 7 ft.
.TUE...S wind 30 kt. Seas 10 ft.
.TUE NIGHT...S wind 35 kt. Seas 17 ft.
.WED...SW wind 30 kt. Seas 15 ft.
.THU THROUGH FRI...NE wind 20 kt. Seas 11 ft.

$$

PKZ170-220145-
Cape Sarichef to Nikolski Bering Side-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY...

.TODAY...S wind 25 kt. Seas 10 ft.
.TONIGHT...SW wind 30 kt. Seas 10 ft.
.TUE...SW wind 40 kt. Seas 14 ft building to 21 ft in the
afternoon.
.TUE NIGHT...SW wind 40 kt. Seas 22 ft.
.WED...W wind 30 kt. Seas 16 ft.
.THU...SE wind 20 kt. Seas 11 ft.
.FRI...NE wind 25 kt. Seas 14 ft.

$$

PKZ171-220145-
Unalaska Bay-
358 AM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY TUESDAY...

.TODAY...S wind 10 kt increasing to 15 kt in the afternoon. Seas
2 ft.
.TONIGHT...S wind 20 kt. Seas 3 ft.
.TUE...SW wind 25 kt. Seas 4 ft.
.TUE NIGHT...SW wind 30 kt. Seas 5 ft.
.WED...W wind 25 kt. Seas 3 ft.
.THU...SE wind 15 kt. Seas 2 ft.
.FRI...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-220145-
Cape Sarichef to Nikolski Pacific Side-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY...

.TODAY...SW wind 25 kt. Seas 20 ft.
.TONIGHT...SW wind 30 kt. Seas 22 ft.
.TUE...SW wind 35 kt. Seas 23 ft.
.TUE NIGHT...SW wind 40 kt. Seas 24 ft.
.WED...W wind 30 kt. Seas 20 ft.
.THU...S wind 20 kt. Seas 11 ft.
.FRI...W wind 25 kt. Seas 13 ft.

$$

PKZ173-220145-
Nikolski to Seguam Island Bering Side-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT AND TUESDAY...

.TODAY...S wind 30 kt. Seas 14 ft.
.TONIGHT...W wind 35 kt. Seas 14 ft building to 18 ft after 
midnight.
.TUE...W wind 45 kt. Seas 20 ft building to 26 ft in the
afternoon.
.TUE NIGHT...W wind 40 kt. Seas 24 ft.
.WED...W wind 30 kt. Seas 18 ft.
.THU...SW wind 20 kt. Seas 14 ft.
.FRI...S wind 25 kt. Seas 14 ft.

$$

PKZ174-220145-
Nikolski to Seguam Island Pacific Side-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY...

.TODAY...S wind 30 kt. Seas 20 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 23 ft.
.TUE...W wind 30 kt increasing to 40 kt in the afternoon. Seas
26 ft.
.TUE NIGHT...W wind 40 kt. Seas 26 ft.
.WED...SW wind 30 kt. Seas 20 ft.
.THU...SW wind 25 kt. Seas 17 ft.
.FRI...SW wind 30 kt. Seas 17 ft.

$$

PKZ175-220145-
Seguam Island to Adak Bering Side-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT AND TUESDAY...

.TODAY...W wind 30 kt. Seas 13 ft.
.TONIGHT...W wind 35 kt. Seas 19 ft.
.TUE...W wind 45 kt. Seas 25 ft.
.TUE NIGHT...W wind 40 kt. Seas 23 ft.
.WED THROUGH THU...W wind 30 kt. Seas 17 ft.
.FRI...SE wind 30 kt. Seas 14 ft.

$$

PKZ176-220145-
Seguam Island to Adak Pacific Side-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY...

.TODAY...SW wind 20 kt early increasing to 30 kt. Seas 22 ft. Snow 
showers and rain showers.
.TONIGHT...W wind 30 kt. Seas 21 ft.
.TUE...W wind 30 kt increasing to 40 kt in the afternoon. Seas 23 ft.
.TUE NIGHT...W wind 45 kt. Seas 22 ft.
.WED...SW wind 30 kt. Seas 17 ft.
.THU...W wind 40 kt. Seas 20 ft.
.FRI...S wind 25 kt. Seas 15 ft.

$$

PKZ177-220145-
Adak to Kiska-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY...

.TODAY...NW wind 30 kt. Seas 19 ft.
.TONIGHT...NW wind 30 kt. Seas 18 ft.
.TUE...NW wind 30 kt increasing to 40 kt in the afternoon. Seas
23 ft.
.TUE NIGHT...W wind 40 kt. Seas 23 ft.
.WED...SW wind 25 kt. Seas 16 ft.
.THU...W wind 35 kt. Seas 19 ft.
.FRI...SE wind 30 kt. Seas 16 ft.

$$

PKZ178-220145-
Kiska to Attu-
358 AM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 20 kt early increasing to 30 kt. Seas 16 ft.
.TONIGHT...N wind 30 kt. Seas 17 ft. Freezing spray.
.TUE...NW wind 30 kt. Seas 18 ft. Freezing spray.
.TUE NIGHT...W wind 25 kt. Seas 17 ft.
.WED THROUGH THU...W wind 30 kt. Seas 20 ft.
.FRI...SE wind 30 kt. Seas 15 ft.

$$

PKZ179-220145-
Pribilof Islands Near Shore Waters-
358 AM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...S wind 30 kt becoming SE 20 kt in the afternoon. Seas
14 ft.
.TONIGHT...SE wind 20 kt. Seas 12 ft.
.TUE...S wind 20 kt. Seas 10 ft.
.TUE NIGHT...W wind 35 kt. Seas 15 ft.
.WED...W wind 40 kt. Seas 19 ft.
.THU...SE wind 15 kt. Seas 11 ft.
.FRI...SE wind 25 kt. Seas 12 ft.

$$

PKZ180-220145-
Kuskokwim Delta and Etolin Strait-
358 AM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...NE wind 30 kt early turning SE. Seas 10 ft. Snow and rain 
showers.
.TONIGHT...SE wind 30 kt. Seas 9 ft. Rain and snow.
.TUE...S wind 25 kt. Seas 8 ft.
.TUE NIGHT...S wind 30 kt. Seas 12 ft.
.WED...SW wind 35 kt. Seas 13 ft.
.THU...SE wind 15 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 6 ft.

$$

PKZ181-220145-
North and West of Nunivak Island-
358 AM AKST Mon Dec 21 2020

...GALE WARNING TODAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...E wind 20 kt early increasing to 40 kt, then diminishing to
30 kt in the afternoon. Seas in ice free waters 7 ft. Heavy freezing
spray. Snow.
.TONIGHT...E wind 25 kt. Seas in ice free waters 5 ft. Snow.
.TUE...SE wind 20 kt. Seas in in ice free waters 3 ft.
.TUE NIGHT...SE wind 25 kt.
.WED...S wind 30 kt.
.THU...SE wind 20 kt.
.FRI...SE wind 15 kt.

$$

PKZ185-220145-
Saint Matthew Island Waters-
358 AM AKST Mon Dec 21 2020

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

.TODAY...NE wind 45 kt. Seas 21 ft. Heavy freezing spray.
Widespread snow showers.
.TONIGHT...E of Saint Matthew Island, E wind 30 kt becoming NE 20
kt after midnight. W of Saint Matthew Island, NE wind 45 kt. Seas 21
ft. Freezing spray. Snow.
.TUE...E of Saint Matthew Island, NW wind 20 kt becoming E in the
afternoon. W of Saint Matthew Island, N wind 40 kt. Seas 19 ft.
Freezing spray. Snow.
.TUE NIGHT...NE wind 35 kt. Seas 18 ft.
.WED...W wind 30 kt. Seas 13 ft.
.THU...S wind 20 kt. Seas 9 ft.
.FRI...SE wind 25 kt. Seas 10 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
427 PM AKST Fri Dec 18 2020

.ANALYSIS AND UPPER LEVELS...

An upper level low present over the northeastern Gulf has opened
up into an upper level wave. This wave was bringing snow to Valdez
and Cordova for much of the morning hours. The rest of
Southcentral remains under southerly flow aloft which is keeping
the region with a good amount of cloud cover. Strong outflow winds
remain at the surface in areas such as the Valdez Narrows and
Thompson Pass. While winds were much higher earlier in Thompson
Pass creating blizzard conditions, these winds have since
subsided enough to lessen any blizzard conditions. Much of
Southwest Alaska also remains under southerly to southeasterly
flow aloft that is keeping a good amount of cloud cover across the
region. Temperatures are very cold also in the teens below zero
across the Middle Kuskokwim Valley.

A broad upper level trough remains in place across the Bering Sea
with an associated surface low just west of the Pribilofs. Some
gale force winds were occurring mainly on the southern side of the
system. Besides the winds, on and off rain showers were occurring
for the Pribilofs.

Lastly, an upper level wave was present on satellite imagery this
afternoon with an associated surface low over the North Pacific.
This low is the one currently being watched for snowfall across
Southcentral on Saturday.

&&

.MODEL DISCUSSION...

The biggest challenge going forward even though we are inside 24
hours now is the snow potential across Southcentral for Saturday.
While most guidance agrees on Anchorage seeing snow, the question
remains just how much. The trend on model guidance this afternoon
has been to the west but they can just as well go back to the east
again. Even though they came west, model guidance still has
different tracks on exactly where the center of this low moves.

Further west, model guidance remains in great agreement on the low
in the Bering. Attention then turns to the next low that is
expected to impact the Bering and the Aleutian Chain Saturday
evening into Sunday. Model guidance continues to spin up various
different lows with the GFS being the strongest one with a low
developing along the front. Thinking the parent low will be the
low hanging back to the southwest of Attu Island. While model
guidance is spinning up these different lows along the front, the
intensity, and placement of each of these is in disagreement
across the board. This could have an impact on just how strong
this front is as it moves through the Bering/Aleutian Chain. Where
the parent low goes beyond Sunday afternoon remains in question as
well as the intensity of this low as it moves into the Bering.
Either way, guidance is indicating this being a strong low in the
Bering but how strong.

&&

.AVIATION...

PANC...MVFR cigs will be intermittent through the afternoon hours,
before becoming VFR later this afternoon. Snow is expected to
develop late tomorrow morning and persist into the evening.
Confidence is gaining that the airport should see an inch or more
through the event. However, confidence is low where the strongest
banding will develop. There is the potential for conditions to
drop to IFR for short times if banding is near or over the field.

&&

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

A weakening low in the north central Gulf this afternoon will
continue to lift northward through the night, allowing for the
gusty winds to diminish across the Copper River Delta. A second
low moves into the North Pacific overnight into Saturday morning,
which will bring gale force winds to the northern Gulf through the
afternoon hours. The Anchorage Bowl will also see snowfall
associated with this system starting in the morning and continuing
through most of the day, with accumulations of 2 to 4 inches
expected. However, there is still a bit of uncertainty in the
forecast as to when the snowfall will start and how much will
fall. A shift in the track of the low, either east or west, could
change the amount of snowfall received throughout the day on
Saturday. Areas along the eastern Kenai Peninsula could also see
about 3 to 7 inches of new snowfall with this low. As the
aforementioned low lifts northward into the North Gulf Coast by
Sunday morning, chances for snowfall starts to diminish across
Southcentral through early Monday morning.

A new front enters the western Gulf and moves over Kodiak Island
Monday morning, which will continue over the Kenai Peninsula
through the afternoon. This system will bring a significant amount
of moisture with it, but there is still a bit of uncertainty as
to whether it will fall as snow or rain as warmer temperatures
will move into the region. Be sure to check back for the forecast
as models come into better agreement with this shift in the
weather pattern for the beginning of the work week.

&&

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

A weakening low continues moving slowly across the Southern
Bering, reaching the Bristol Bay coast Sunday morning. Light
snow showers will be confined to the Southwest Coast through
tomorrow before extending into the southern portions of Bristol
Bay, the Southern AKPEN and the higher elevations. No significant
accumulations are expected with this. There is deep amplification
in the upper levels by Sunday as a deep low approaches the Western
Bering. The associated leading front is expected to reach the
Southwest Coast by Monday morning. Winds will become gusty for
the Kuskokwim Delta, through passes in Bristol Bay and the AKPEN,
and along the Coast on Monday. Precipitation will be heaviest
along the Eastern Aleutians/Southern AKPEN as the front
approaches, as well as along the eastern Kuskokwim Mountains.
Along the Chain/AKPEN, this will start as a rain/snow mix
transitioning to all rain and then back to a mix. Light snow
showers are expected across the rest of the Southwest Mainland on
Monday.

&&

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

Low impact system tracks across the Southern Bering through
tomorrow night. A few gales and small craft winds expected along
the Aleutian Coasts as well as light showers south of the low. By
Sunday morning a leading front enters the Western Bering. Model
agreement by this point is not ideal, with different solutions
spinning up embedded lows in different areas within the system.
However, confidence is high enough to expect a band of gales along
the front to travel across the Bering towards the Southwest Coast
through Sunday night, with the chance for periods of storms
likely. As the front approaches the Southwest coast, periods of
moderate to heavy precipitation, will work its way across the
Eastern Aleutians/Southern AKPEN Sunday night into Monday. This
will mostly be a rain/snow mix transitioning to all rain then back
to a mix, with snow along the higher elevations.

&&

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

Gulf of Alaska:

There is good confidence on a quiet start to the period with high
pressure extending across much of the Gulf. By Monday night
southerly winds will be increasing across much of the western Gulf
of Alaska as a front approaches. The current forecast calls for
widespread Gales, but some areas of storm force winds appear
possible. On Tuesday we should see these southerlies subside.
Wednesday there is significant model disagreement on the
development of an area of low pressure in the northeastern Pacific
that would bring stronger easterlies back into the Western Gulf,
for now the forecast leans towards this development remaining too
far south and too weak to have any significant influence on
winds/waves in the western Gulf.

Bering Sea:

A broad complex low with multiple centers will be centered over
the Bering Monday into Tuesday. The strongest winds will be found
along the northern fringes of this broad low across the Northern
Bering, with good confidence on generally low end Gales. By
Wednesday the broad low looks to break up into multiple weak lows
across the Bering Sea. Confidence on the placement of these
individual lows is very low, but none of them look to produce more
than some very small areas of Gales.

&&

.LONG TERM FORECAST (Days 4 through 7/Tuesday through
Friday)...

On Tuesday a deep trough will extend across much of the Bering,
with a ridge across the Gulf of Alaska through eastern Mainland
Alaska. A pronounced shortwave will be rounding the base of this
Bering trough with a low deepening across the western Gulf. This
low will have a great connection to some moist air from the
tropics and thus looks to set up widespread precipitation,
potentially heavy from the AKPEN through the Northern Gulf Coast.
With the precipitation will come a significantly warmer airmass
so a quick change to rain is possible for portions of the AKPEN
and Kenai Peninsula. Some very heavy snows look possible for all
higher elevation areas surrounding Prince William Sound. On
Wednesday this system should begin to weaken with only some
lingering precipitation for the Northern Gulf coast. For
Thursday/Friday another storm system looks to lift out of the
North Pacific into the eastern Gulf of Alaska with most of its
impacts remaining east of our AOR. Across the Bering a complex of
weak lows look to keep the pattern active across the central and
western Aleutians, but with none of these lows looking
particularly impactful/strong.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gales 119 120 165 177 178.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...MV
SOUTHCENTRAL ALASKA...AH
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KM
MARINE/LONG TERM...BG