Alert archive / Alaska / Gale Warnings in 2020

Gale Warning 796, NWS Anchorage, AK

December 19, 2020

NWS Anchorage, AK issued this gale warning at Dec 19, 2020, 3:01 PM AKST. It was in force for 60 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 19, 2020, 3:01 PM AKST (00:01 UTC)
Expired
Dec 22, 2020, 3:21 AM AKST
In force
60 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

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.

$$
5 follow-up statements
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.

$$
359 
FZAK52 PAFC 220010
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
310 PM 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.

PKZ199-221330-
310 PM AKST Mon Dec 21 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 948 mb low 180 nm west of Saint Paul remains nearly stationary 
through Tue morning then moves to 110 nm northwest of Cape
Newenham by Wed afternoon. Its associated front stalls along the 
Southwest Alaska coast Mon afternoon before moving inland Mon
night. A 962 mb low forms along the front Mon evening 85 nm 
southwest of Hooper Bay then moves to then to 200 nm northwest of
Gambell by Wed morning and dissipates inland Wed afternoon.

$$

PKZ150-221330-
South of the AK Peninsula Sitkinak to Castle Cape-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 45 kt becoming SW 30 kt after midnight. Seas
27 ft. Widespread rain showers.
.TUE...SW wind 20 kt. Seas 19 ft.
.TUE NIGHT...SW wind 30 kt. Seas 17 ft.
.WED...SW wind 30 kt. Seas 17 ft.
.WED NIGHT...SE wind 25 kt. Seas 14 ft.
.THU...NE wind 30 kt. Seas 17 ft.
.FRI...NW wind 20 kt. Seas 12 ft.
.SAT...S wind 30 kt. Seas 10 ft.

$$

PKZ155-221330-
South of the AK Peninsula Castle Cape to Cape Sarichef-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt. Seas 20 ft.
.TUE...SW wind 30 kt diminishing to 20 kt in the afternoon. Seas
20 ft.
.TUE NIGHT...SW wind 30 kt. From the Shumagin Islands E, SW wind
20 kt increasing to 30 kt after midnight. Seas 19 ft.
.WED...SW wind 35 kt. Seas 18 ft.
.WED NIGHT...NW wind 20 kt. Seas 13 ft.
.THU...N wind 30 kt. Seas 13 ft.
.FRI...N wind 15 kt. Seas 10 ft.
.SAT...SE wind 30 kt. Seas 14 ft.

$$

PKZ160-221330-
Bristol Bay-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 8 ft. Rain and snow.
.TUE...S wind 20 kt. Seas 5 ft.
.TUE NIGHT...SW wind 10 kt increasing to 15 kt after midnight.
Seas 6 ft.
.WED...SW wind 25 kt. Seas 9 ft.
.WED NIGHT...S wind 20 kt. Seas 8 ft.
.THU...N wind 30 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...E wind 30 kt. Seas 6 ft.

$$

PKZ165-221330-
Port Heiden to Cape Sarichef-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...S wind 30 kt. Seas 9 ft.
.TUE...S wind 30 kt. Seas 11 ft.
.TUE NIGHT...SW wind 35 kt except S 25 kt from Port Moller E. Seas
18 ft except 12 ft from Port Moller E.
.WED...SW wind 30 kt. Seas 16 ft.
.WED NIGHT...W wind 20 kt. Seas 10 ft.
.THU...NE wind 30 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 11 ft.
.SAT...E wind 30 kt. Seas 10 ft.

$$

PKZ170-221330-
Cape Sarichef to Nikolski Bering Side-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...SW wind 30 kt. Seas 10 ft.
.TUE...SW wind 40 kt. Seas 19 ft.
.TUE NIGHT...SW wind 35 kt. Seas 21 ft. Snow showers and rain
showers.
.WED...W wind 30 kt. Seas 16 ft.
.WED NIGHT...W wind 15 kt. Seas 11 ft.
.THU...SE wind 20 kt. Seas 11 ft.
.FRI...NE wind 25 kt. Seas 14 ft.
.SAT...SE wind 30 kt. Seas 14 ft.

$$

PKZ171-221330-
Unalaska Bay-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...S wind 20 kt. Seas 3 ft. Snow showers.
.TUE...SW wind 25 kt. Seas 4 ft.
.TUE NIGHT...SW wind 35 kt. Seas 5 ft. Snow showers.
.WED...W wind 30 kt. Seas 5 ft.
.WED NIGHT...W wind 15 kt. Seas 2 ft.
.THU...SE wind 10 kt. Seas 3 ft.
.FRI...SW wind 15 kt. Seas 2 ft.
.SAT...SE wind 20 kt. Seas 3 ft.

$$

PKZ172-221330-
Cape Sarichef to Nikolski Pacific Side-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...SW wind 35 kt. Seas 23 ft.
.TUE...SW wind 30 kt. Seas 22 ft.
.TUE NIGHT...SW wind 35 kt. Seas 20 ft.
.WED...W wind 35 kt. Seas 18 ft.
.WED NIGHT...W wind 20 kt. Seas 11 ft.
.THU...S wind 15 kt. Seas 11 ft.
.FRI...W wind 25 kt. Seas 13 ft.
.SAT...SE wind 30 kt. Seas 20 ft.

$$

PKZ173-221330-
Nikolski to Seguam Island Bering Side-
310 PM AKST Mon Dec 21 2020

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 35 kt. Seas 12 ft building to 17 ft after
midnight.
.TUE...W wind 40 kt. Seas 23 ft.
.TUE NIGHT...W wind 40 kt. Seas 24 ft. Snow showers.
.WED...W wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 20 kt. Seas 11 ft.
.THU...SW wind 20 kt. Seas 14 ft.
.FRI...S wind 25 kt. Seas 14 ft.
.SAT...SE wind 30 kt. Seas 19 ft.

$$

PKZ174-221330-
Nikolski to Seguam Island Pacific Side-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...W wind 30 kt. Seas 22 ft.
.TUE...W wind 35 kt. Seas 21 ft.
.TUE NIGHT...W wind 35 kt. Seas 21 ft.
.WED...W wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 20 kt. Seas 12 ft.
.THU THROUGH FRI...SW wind 30 kt. Seas 17 ft.
.SAT...S wind 30 kt. Seas 25 ft.

$$

PKZ175-221330-
Seguam Island to Adak Bering Side-
310 PM AKST Mon Dec 21 2020

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 40 kt. Seas 20 ft.
.TUE...W wind 45 kt. Seas 24 ft.
.TUE NIGHT...W wind 40 kt diminishing to 30 kt after midnight.
Seas 23 ft. Freezing spray.
.WED...W wind 30 kt. Seas 15 ft.
.WED NIGHT...SW wind 20 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 18 ft.
.FRI...SE wind 30 kt. Seas 14 ft.
.SAT...S wind 30 kt. Seas 24 ft.

$$

PKZ176-221330-
Seguam Island to Adak Pacific Side-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...W wind 30 kt. Seas 21 ft.
.TUE...W wind 30 kt. Seas 19 ft.
.TUE NIGHT...W wind 25 kt. Seas 16 ft.
.WED...W wind 30 kt. Seas 13 ft.
.WED NIGHT...SW wind 25 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 20 ft.
.FRI...S wind 25 kt. Seas 15 ft.
.SAT...S wind 30 kt. Seas 26 ft.

$$

PKZ177-221330-
Adak to Kiska-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...NW wind 30 kt. Seas 18 ft.
.TUE...NW wind 30 kt. Seas 19 ft.
.TUE NIGHT...NW wind 30 kt. Seas 17 ft.
.WED...SW wind 30 kt. Seas 14 ft.
.WED NIGHT...SW wind 35 kt. Seas 17 ft.
.THU...W wind 40 kt. Seas 19 ft.
.FRI...SE wind 30 kt. Seas 16 ft.
.SAT...SW wind 30 kt. Seas 26 ft.

$$

PKZ178-221330-
Kiska to Attu-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...N wind 30 kt. Seas 17 ft. Freezing spray.
.TUE...NW wind 30 kt. Seas 18 ft. Freezing spray.
.TUE NIGHT...NW wind 30 kt. Seas 16 ft. Freezing spray.
.WED...SW wind 30 kt. Seas 15 ft.
.WED NIGHT...NW wind 35 kt. Seas 17 ft.
.THU...W wind 30 kt. Seas 16 ft.
.FRI...SE wind 30 kt. Seas 15 ft.
.SAT...SW wind 30 kt. Seas 26 ft.

$$

PKZ179-221330-
Pribilof Islands Near Shore Waters-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...SE wind 20 kt. Seas 11 ft.
.TUE...S wind 30 kt. Seas 14 ft.
.TUE NIGHT...NW wind 30 kt. Seas 14 ft. Freezing spray. Snow
showers.
.WED...W wind 30 kt. Seas 14 ft.
.WED NIGHT...SW wind 20 kt. Seas 10 ft.
.THU...SE wind 20 kt. Seas 11 ft.
.FRI...SE wind 25 kt. Seas 12 ft.
.SAT...E wind 30 kt. Seas 19 ft.

$$

PKZ180-221330-
Kuskokwim Delta and Etolin Strait-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...SE wind 35 kt becoming S 25 kt after midnight. Seas in
ice free waters 11 ft. Snow with rain.
.TUE...SE wind 30 kt. Seas in ice free waters 9 ft.
.TUE NIGHT...SE wind 30 kt. Seas in ice free waters 12 ft. Heavy
freezing spray.
.WED...SW wind 35 kt. Seas in ice free waters 13 ft.
.WED NIGHT...SW wind 30 kt. Seas in ice free waters 11 ft.
.THU...NE wind 25 kt. Seas in ice free waters 6 ft.
.FRI...N wind 15 kt. Seas in ice free waters 6 ft.
.SAT...E wind 30 kt. Seas in ice free waters 10 ft.

$$

PKZ181-221330-
North and West of Nunivak Island-
310 PM AKST Mon Dec 21 2020

...BRISK WIND ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...SE wind 30 kt. Snow.
.TUE...SE wind 30 kt.
.TUE NIGHT...SE wind 25 kt.
.WED...NE wind 30 kt.
.WED NIGHT...W wind 30 kt.
.THU THROUGH FRI...SE wind 15 kt.
.SAT...E wind 30 kt.

$$

PKZ185-221330-
Saint Matthew Island Waters-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...E wind 30 kt E of Saint Matthew Island...NE 45 kt W of
Saint Matthew Island. Seas 22 ft. Heavy freezing spray. Snow.
.TUE...S wind 25 kt E of Saint Matthew Island...N 40 kt W of Saint 
Matthew Island. Seas 18 ft. Heavy freezing spray. Snow.
.TUE NIGHT...E of Saint Matthew Island, SE wind 20 kt becoming N
after midnight. W of Saint Matthew Island, NW wind 35 kt
diminishing to 25 kt after midnight. Seas 18 ft. Heavy freezing 
spray.
.WED...W wind 30 kt. Seas 12 ft.
.WED NIGHT...SW wind 20 kt. Seas 7 ft.
.THU...S wind 20 kt. Seas 9 ft.
.FRI...SE wind 25 kt. Seas 10 ft.
.SAT...E wind 30 kt. Seas 26 ft.

$$
281 
FZAK52 PAFC 221221
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
321 AM AKST Tue Dec 22 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.

PKZ199-230100-
321 AM AKST Tue Dec 22 2020

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...A 949 mb low 180 nm west
of St George moves to 80 nm east of St Paul and weakens to 962 mb 
Wed morning. This low moves inland near Kipnuk Wed night. There is a
new low of 976 mb 250 nm west of Attu Island. This low will move 
eastward and be 85 nm west of Amchitka Thu morning.

$$

PKZ150-230100-
South of the AK Peninsula Sitkinak to Castle Cape-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SE wind 30 kt early becoming SW, then diminishing to 20 kt 
in the afternoon. Seas 21 ft.
.TONIGHT...SW wind 25 kt. Seas 18 ft.
.WED...SW wind 25 kt. Seas 17 ft.
.WED NIGHT...SE wind 25 kt. Seas 14 ft.
.THU...E wind 30 kt. Seas 17 ft.
.FRI...N wind 15 kt. Seas 11 ft.
.SAT...SE wind 30 kt. Seas 9 ft.

$$

PKZ155-230100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 21 ft.
.TONIGHT...SW wind 30 kt except SW 25 kt from the Shumagin Islands
E. Seas 19 ft.
.WED...SW wind 30 kt. Seas 18 ft.
.WED NIGHT...NW wind 20 kt. Seas 13 ft.
.THU...NW wind 30 kt. Seas 14 ft.
.FRI...NW wind 25 kt. Seas 12 ft.
.SAT...SE wind 35 kt. Seas 16 ft.

$$

PKZ160-230100-
Bristol Bay-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY TODAY AND WEDNESDAY...

.TODAY...S wind 25 kt. Seas 6 ft.
.TONIGHT...S wind 20 kt. Seas 7 ft.
.WED...S wind 30 kt. Seas 10 ft.
.WED NIGHT...S wind 15 kt. Seas 9 ft.
.THU...N wind 30 kt. Seas 7 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...E wind 30 kt. Seas 6 ft.

$$

PKZ165-230100-
Port Heiden to Cape Sarichef-
321 AM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...S wind 30 kt. Seas 11 ft.
.TONIGHT...S wind 35 kt except S 30 kt from Port Moller E. Seas
19 ft except 12 ft from Port Moller E.
.WED...SW wind 35 kt. Seas 18 ft.
.WED NIGHT...W wind 15 kt. Seas 11 ft.
.THU...N wind 30 kt. Seas 9 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.SAT...SE wind 35 kt. Seas 10 ft.

$$

PKZ170-230100-
Cape Sarichef to Nikolski Bering Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt. Seas 19 ft.
.TONIGHT...SW wind 40 kt. Seas 22 ft. Snow showers and rain
showers.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...W wind 20 kt. Seas 12 ft.
.THU...E wind 20 kt. Seas 8 ft.
.FRI...W wind 25 kt. Seas 11 ft.
.SAT...SE wind 40 kt. Seas 16 ft.

$$

PKZ171-230100-
Unalaska Bay-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 25 kt. Seas 4 ft.
.TONIGHT...SW wind 30 kt. Seas 5 ft. Snow showers.
.WED...W wind 25 kt. Seas 4 ft building to 7 ft in the afternoon.
Snow showers.
.WED NIGHT...W wind 20 kt. Seas 7 ft.
.THU...NE wind 10 kt. Seas 3 ft.
.FRI...W wind 15 kt. Seas 3 ft.
.SAT...SE wind 30 kt. Seas 5 ft.

$$

PKZ172-230100-
Cape Sarichef to Nikolski Pacific Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT...

.TODAY...SW wind 30 kt. Seas 22 ft.
.TONIGHT...SW wind 35 kt. Seas 20 ft.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...NW wind 20 kt. Seas 12 ft.
.THU...N wind 15 kt. Seas 13 ft.
.FRI...W wind 25 kt. Seas 14 ft.
.SAT...SE wind 35 kt. Seas 20 ft.

$$

PKZ173-230100-
Nikolski to Seguam Island Bering Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 45 kt. Seas 23 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 25 ft. Snow showers.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...SW wind 20 kt. Seas 12 ft.
.THU THROUGH FRI...SW wind 30 kt. Seas 18 ft.
.SAT...SE wind 40 kt. Seas 20 ft.

$$

PKZ174-230100-
Nikolski to Seguam Island Pacific Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 35 kt. Seas 21 ft.
.TONIGHT...W wind 35 kt. Seas 21 ft.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...SW wind 20 kt. Seas 13 ft.
.THU...SW wind 35 kt. Seas 23 ft.
.FRI...SW wind 30 kt. Seas 23 ft.
.SAT...S wind 40 kt. Seas 26 ft.

$$

PKZ175-230100-
Seguam Island to Adak Bering Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 45 kt. Seas 25 ft.
.TONIGHT...W wind 40 kt becoming NW 30 kt after midnight. Seas
25 ft. Freezing spray.
.WED...W wind 30 kt. Seas 16 ft. Freezing spray.
.WED NIGHT...SW wind 20 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 22 ft.
.FRI...SE wind 30 kt. Seas 16 ft.
.SAT...SE wind 35 kt. Seas 19 ft.

$$

PKZ176-230100-
Seguam Island to Adak Pacific Side-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 30 kt. Seas 18 ft.
.TONIGHT...NW wind 30 kt. Seas 16 ft.
.WED...W wind 25 kt. Seas 13 ft.
.WED NIGHT...SW wind 25 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 20 ft.
.FRI...S wind 30 kt. Seas 20 ft.
.SAT...S wind 40 kt. Seas 35 ft.

$$

PKZ177-230100-
Adak to Kiska-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 19 ft.
.TONIGHT...NW wind 25 kt. Seas 19 ft.
.WED...W wind 25 kt. Seas 14 ft.
.WED NIGHT...SW wind 35 kt. Seas 17 ft.
.THU...W wind 40 kt. Seas 19 ft.
.FRI...SE wind 30 kt. Seas 17 ft.
.SAT...SW wind 40 kt. Seas 41 ft.

$$

PKZ178-230100-
Kiska to Attu-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 17 ft. Freezing spray.
.TONIGHT...W wind 30 kt. Seas 16 ft. Freezing spray.
.WED...SW wind 30 kt. Seas 14 ft. Freezing spray.
.WED NIGHT...NW wind 35 kt. Seas 15 ft.
.THU...W wind 30 kt. Seas 17 ft.
.FRI...SE wind 25 kt. Seas 15 ft.
.SAT...W wind 40 kt. Seas 30 ft.

$$

PKZ179-230100-
Pribilof Islands Near Shore Waters-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...S wind 30 kt. Seas 13 ft.
.TONIGHT...SW wind 20 kt becoming NW 30 kt after midnight. Seas
13 ft. Freezing spray. Snow showers and rain showers.
.WED...NW wind 30 kt. Seas 14 ft. Freezing spray.
.WED NIGHT...SW wind 15 kt. Seas 9 ft.
.THU...SE wind 20 kt. Seas 7 ft.
.FRI...SE wind 25 kt. Seas 8 ft.
.SAT...E wind 35 kt. Seas 21 ft.

$$

PKZ180-230100-
Kuskokwim Delta and Etolin Strait-
321 AM AKST Tue Dec 22 2020

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

.TODAY...S wind 25 kt. Seas in ice free waters 8 ft.
.TONIGHT...SE wind 30 kt. Seas in ice free waters 12 ft. Heavy
freezing spray.
.WED...S wind 30 kt. Seas in ice free waters 13 ft.
.WED NIGHT...W wind 25 kt. Seas in ice free waters 11 ft.
.THU...N wind 25 kt. Seas in ice free waters 6 ft.
.FRI...NW wind 20 kt. Seas in ice free waters 7 ft.
.SAT...E wind 35 kt. Seas in ice free waters 13 ft.

$$

PKZ181-230100-
North and West of Nunivak Island-
321 AM AKST Tue Dec 22 2020

.TODAY...SE wind 20 kt.
.TONIGHT...SE wind 20 kt.
.WED...E wind 20 kt becoming NW in the afternoon.
.WED NIGHT...W wind 25 kt.
.THU...SE wind 15 kt.
.FRI...N wind 15 kt.
.SAT...E wind 35 kt.

$$

PKZ185-230100-
Saint Matthew Island Waters-
321 AM AKST Tue Dec 22 2020

...GALE WARNING TODAY...

.TODAY...E wind 20 kt E of Saint Matthew Island...N 35 kt W of
Saint Matthew Island. Seas 18 ft. Freezing spray. Snow.
.TONIGHT...E of Saint Matthew Island, S wind 20 kt becoming NW after 
midnight. W of Saint Matthew Island, NW wind 30 kt. Seas 16 ft. 
Freezing spray.
.WED...NW wind 25 kt. Seas 11 ft. Freezing spray.
.WED NIGHT...SW wind 20 kt. Seas 8 ft.
.THU...S wind 20 kt. Seas 8 ft.
.FRI...SE wind 30 kt. Seas 8 ft.
.SAT...E wind 40 kt. Seas 26 ft.

$$

What forecasters said that day

The local office's own words before this gale warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before this gale warning went out at Dec 19, 5:13 AM AKST, 9 hours 48 minutes earlier.

Area forecast discussion, Dec 19, 5:13 AM AKST, 9 hours 48 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
513 AM AKST Sat Dec 19 2020

.ANALYSIS AND UPPER LEVELS...

A vertically stacked area of low pressure over the southern Gulf
is slowly lifting northeast this morning. As it does, an area of
rain is moving into the northern Gulf. Radar returns shows a
steady rain falling over Middleton Island with rain and snow also
beginning to develop over the entrance to Prince William Sound.
To the west, a shortwave moving east from the AKPEN toward Kodiak
Island is interacting with an inverted trough extending from the
aforementioned low northwest over the Barren Islands and southern
Kenai Peninsula. Here, cloud cover is on the increase with returns
showing up on radar from Seldovia to Palmer. However, with drier
air in place at near the surface, thus far only Homer, Seldovia,
and Whittier have reported snow as of 5:00am. Farther south, light
snow is falling across Kodiak Island. Elsewhere across
Southcentral, water vapor imagery denotes the wave that brought a
period of very light snow from Anchorage to Talkeetna and
Glennallen yesterday afternoon is continuing to weaken as it
pushes farther over interior Alaska.

The coldest air is again situated in the Kuskokwim Valley, where
temperatures this morning are hovering around -10F. Temperatures
are warmer along the southwest coast where low stratus, patchy
fog, and isolated areas of light snow persist. Over the Bering,
the main weather feature is a 974 mb low just east of the
Pribilofs. This system is producing areas of rain and snow from
the Pribilofs to Cape Newenham and Bristol Bay.

&&

.MODEL DISCUSSION...

Models are coming into better agreement with what looks to be
another light snow event for the Kenai Peninsula north across the
Anchorage Bowl and Mat-Su Valleys today. There is still some
subtle differences in the position of the surface low as it tracks
to Prince William Sound, as well as the timing and strength of
the 700 mb and 500 mb troughs as both lift across Southcentral
through the day. Even with these differences, it does appear that
a deformation band will set up from the northern half of Kenai
Peninsula to perhaps as far north as Talkeetna. The differences in
the models relate to where the heaviest precipitation within the
band sets up, based on the position of the upper-level features,
and how long it lingers over the area. So although the sensible
weather is the same between models, snowfall amounts differ. Thus,
a blend between the NAM and GFS was preferred with a general 2 to
5 inches of snow expected. There is also some model disagreement
as to whether the light snow will shut off completely moving into
Saturday night and Sunday. The NAM and GFS both indicate a
secondary trough moving through with a southwesterly up inlet flow
for Sunday. This would likely allow light snow to persist through
the weekend, although intensity and amounts would be less than
what is expected today.

Farther west, there is good model consistency with the evolution
of the low currently east of the Pribilofs as it tracks toward
King Salmon by Sun morning. Models are also in good agreement with
deepening a North Pacific low as it moves toward Attu on Sunday
as it lifts a front over the Aleutian Chain. Guidance, however,
then breaks down as the low becomes vertically stacked with
multiple upper-level shortwaves lifting north in advance of the
main low. This translates to the various models spinning up
multiple deep lows at various points along the front at various
times through early next week. Basically, all models indicate the
development of a broad and complex low moving from south of the
Chain to the central Bering through the short term forecast
period. The exact position and strength of these features along
the front and in relation to the parent low, though, is near
impossible to pin down right now. These solutions will also have
an impact on the strength of the front as it approaches the
southwest coast Monday. The only consistent agreement between the
models is that the parent low will be quite strong (sub 960 mb),
as will any subsequent surface lows that spin up along the
associated front.

&&

.AVIATION...

PANC...VFR ceilings and visibility this morning will lower to
MVFR as snow develops over the terminal by mid-morning Saturday.
IFR ceilings and visibility are expected by noon and to continue
through the evening, especially in heavier bands of snow. 2 to 4
inches of snow is expected for the airport complex. The snow is
expected to end late Saturday night or early morning Sunday with
improved visibility; however, low stratus should persist with MVFR
ceilings.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2: Today
through Sunday Night)...

The next snowfall for the Southcentral region is already beginning
to take shape over some of the area. Radar imagery this morning
shows Gulf moisture streaming northwestward into the Kenai
Peninsula. This moisture is feeding a developing snow band,
already causing snow in Homer and Seldovia. The band is expanding
northward along the western edge of the Kenai Mountains. This is
likely going to be the snow band that impacts Anchorage and the
Mat-Su through the day today. While it is difficult to say exactly
where the heaviest snow associated with the snow band will set up,
it is progged by many of the models to set up over Anchorage and
the Mat-Su from the Parks Highway east. The forcing for this band,
an approaching upper level disturbance, will lift northeastward
through the day, which will keep the light snow going through the
day, but the entire area of snow will also gradually shift
northeastward with time. Thus, the snow ongoing in Homer and
Seldovia now will end first this morning, and the back edge of the
snow will gradually move northward through this evening. 2 to 4
inches remains the general consensus on how much snow any one area
can expect. If the current pattern of a solitary heavier band
persists through the day and the band is slow-moving or remains
stationary, there certainly is potential for localized areas to
get more. However, this would also mean areas outside of the snow
band would get less. This is because these snow bands generate
their own circulations, with lift and heavier snow within the
band resulting in subsidence and light/no snow in areas
immediately outside of the snow band.

Outside of Anchorage and the Mat-Su, a bit heavier amounts of
snow are expected in the Kenai Mountains today, as these areas are
closer to the Gulf moisture source. The entire area of snow shifts
northeastward tonight, so heavier/more persistent snow will move
into Prince William Sound, including Cordova and Valdez this
evening into tonight, along with the Copper River Basin overnight
tonight. The snow will taper off along the Wrangells Sunday
morning.

Another upper level disturbance is expected to cross Southcentral
Sunday evening. This feature will have considerably less moisture
to work with, but it should be strong enough to get flurries to
light snow started up again across the Cook Inlet region Sunday
afternoon into Sunday night. Accumulations will be minor, under an
inch for most areas.

Late Sunday night into midweek, the weather pattern becomes even
more active, shifting towards the warmer/windier. A strong Bering
low bringing a similarly strong front and possible atmospheric
river eastwards into Southcentral. Impacts could include the
potential for high winds through Turnagain Arm and the Gulf
waters, Chinook/downsloping into Anchorage at the Mat Valley,
heavy snow through the coastal mountains causing localized
blizzard conditions, heavy rain along the coast increasing
flooding concerns, rising snow levels, heavy snow along the
Alaska Range, increased avalanche concerns, and treacherous travel
conditions in many areas. Stay tuned for more on all those
hazards.

What can be said with high certainty is that stargazers hoping to
catch the conjunction of Jupiter and Saturn Monday evening should
plan not to be anywhere near Southcentral Alaska, as cloud cover
will be widespread here.

&&

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

This morning there is a 974 mb low over the Pribilof Islands that
will continue to track eastward towards Bristol Bay. This storm
will gradually weaken along the way and the pressure gradient
forces will steadily decrease. The associated frontal boundary
will approach the Southwest coast, bringing a round of light snow
showers to the coastal areas. Significant accumulations are not
expected with this system. There is a secondary area of low
pressure between St Matthew Island and Nunivak Island, light
showers will be possible in the vicinity of Nightmute to St
Matthew Island. Additionally, a new storm is brewing in the North
Pacific. The models have not yet converged on a precise track yet,
but they are all suggesting that the low will be deep and have a
fetch of deep moisture associated with it. The precipitation
shield from this new storm will reach SW AK on Monday.

&&

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

This morning there is a 974 mb low over the Pribilof Islands that
will continue to move eastward towards Bristol Bay. This storm
will gradually weaken along the way as the low fills and the
pressure gradient forces will steadily decrease. There is a secondary
area of low pressure between St Matthew Island and Nunivak Island,
light showers will be possible in the vicinity of Toksook Bay to
St Matthew Island. Additionally, there is a new storm churning in
the North Pacific. The models all project that this low will
undergo rapid intensification today and early Sunday as it moves
towards the western Aleutians. High confidence in gale- storm
force winds and a widespread precipitation shield. By Sunday
morning, the leading front of an incoming storm force low west of
Shemya enters the Western Bering.

&&

.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...Storm Warning 172 174.
		 Gale Warning 119 120 165 170 173 175-178 351 352 411 413.
		 Heavy Freezing Spray Warning 181.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...TM
SOUTHCENTRAL ALASKA...JW
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...PJS
MARINE/LONG TERM...BG

In the hours before

Local storm report, Dec 19, 2:12 PM AKST, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
212 PM AKST SAT DEC 19 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0211 PM     SNOW             ANCHORAGE               61.10N 149.84W
12/19/2020  M6.0 INCH        ANCHORAGE          AK   TRAINED SPOTTER

            6 INCHES OF ACCUMULATION SO FAR. MODERATE
            SNOW CONTINUES.

&&

GJERDINGEN
Local storm report, Dec 19, 2:46 PM AKST, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
246 PM AKST SAT DEC 19 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 PM     SNOW             3 ESE STERLING          60.49N 150.71W
12/19/2020  M7.0 INCH        KENAI PENINSULA    AK   PUBLIC

            7 INCHES SINCE 12 AM. LIGHT SNOW CONTINUING
            CURRENTLY.

&&

GJERDINGEN

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 19, 3:01 PM AKSTStorm WarningAFC37 hr
Dec 19, 3:01 PM AKSTHeavy Freezing Spray WarningAFC60 hr
Dec 19, 3:31 PM AKSTGale WarningAFC37 hr
Dec 20, 3:54 AM AKSTSmall Craft AdvisoryAFC3 days
Dec 20, 4:00 AM AKSTGale WarningAFC11 hr
Dec 20, 4:00 AM AKSTGale WarningAFC11 hr
Dec 20, 4:00 AM AKSTSmall Craft AdvisoryAFC24 hr
Dec 20, 4:44 AM AKSTHigh Wind WatchAFC17 hr
Dec 20, 4:49 AM AKSTWinter Storm WatchAFC24 hr
Dec 20, 2:38 PM AKSTGale WarningAFC13 hr
Dec 20, 2:38 PM AKSTStorm WarningAFC13 hr
Dec 20, 2:49 PM AKSTGale WarningAFC61 hr

Nearby

Gale Warnings in Alaska, 2020Every gale warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.