Gale Warning 793, NWS Anchorage, AK

770 
FZAK52 PAFC 191234
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
334 AM 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.

PKZ199-200130-
334 AM AKST Sat Dec 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 974 mb low 90 nm east of Saint Paul moves inland near Egegik at
982 mb by Sun morning. A front attached to a 966 mb North Pacific
low 310 nm southwest of Attu moves across the western Aleutians 
for Sat evening and continues to the eastern Bering by Mon 
morning. The North Pacific low moves to 160 nm southwest of Adak 
at 959 mb by Mon morning. A 975 mb low develops along the front 
190 nm south of Atka Sun evening and moves to 75 nm south of Saint
Paul at 966 mb for Mon morning.

$$

PKZ150-200130-
South of the AK Peninsula Sitkinak to Castle Cape-
334 AM AKST Sat Dec 19 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...W wind 15 kt becoming SW 25 kt in the afternoon. 
Seas 11 ft.
.TONIGHT...SW wind 30 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 14 ft.
.SUN NIGHT...S wind 40 kt. Seas 15 ft.
.MON...S wind 45 kt. Seas 25 ft.
.TUE...S wind 30 kt. Seas 22 ft.
.WED...SW wind 25 kt. Seas 19 ft.

$$

PKZ155-200130-
South of the AK Peninsula Castle Cape to Cape Sarichef-
334 AM AKST Sat Dec 19 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...SW wind 30 kt. From the Shumagin Islands E, SW wind 20 kt
increasing to 30 kt in the afternoon. Seas 13 ft.
.TONIGHT...W wind 30 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 10 ft.
.SUN NIGHT...S wind 45 kt. Seas 21 ft.
.MON...S wind 40 kt. Seas 21 ft.
.TUE...S wind 30 kt. Seas 20 ft.
.WED...W wind 25 kt. Seas 18 ft.

$$

PKZ160-200130-
Bristol Bay-
334 AM AKST Sat Dec 19 2020

...SMALL CRAFT ADVISORY TONIGHT AND SUNDAY...

.TODAY...SE wind 20 kt. Seas 6 ft. Freezing spray.
.TONIGHT...SE wind 30 kt becoming NW after midnight. Seas 10 ft.
Freezing spray.
.SUN...W wind 25 kt. Seas 9 ft. Freezing spray.
.SUN NIGHT...SE wind 35 kt. Seas 7 ft.
.MON...SE wind 40 kt. Seas 8 ft.
.TUE...SE wind 25 kt. Seas 7 ft.
.WED...SW wind 20 kt. Seas 6 ft.

$$

PKZ165-200130-
Port Heiden to Cape Sarichef-
334 AM AKST Sat Dec 19 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 35 kt. Seas 13 ft.
.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
15 kt in the afternoon. Seas 10 ft subsiding to 6 ft in the
afternoon. Freezing spray.
.SUN NIGHT...SE wind 40 kt. Seas 10 ft.
.MON...SE wind 35 kt. Seas 9 ft.
.TUE...S wind 25 kt. Seas 9 ft.
.WED...W wind 20 kt. Seas 9 ft.

$$

PKZ170-200130-
Cape Sarichef to Nikolski Bering Side-
334 AM AKST Sat Dec 19 2020

...GALE WARNING SUNDAY...

.TODAY...W wind 30 kt. Seas 12 ft.
.TONIGHT...W wind 25 kt. Seas 9 ft.
.SUN...S wind 20 kt becoming SE 40 kt in the afternoon. Seas 6 ft
building to 10 ft in the afternoon. Widespread rain showers.
.SUN NIGHT...S wind 45 kt. Seas 13 ft.
.MON...S wind 25 kt. Seas 8 ft.
.TUE THROUGH WED...W wind 15 kt. Seas 11 ft.

$$

PKZ171-200130-
Unalaska Bay-
334 AM AKST Sat Dec 19 2020

...SMALL CRAFT ADVISORY TODAY AND SUNDAY...

.TODAY...W wind 25 kt. Seas 4 ft.
.TONIGHT...W wind 20 kt diminishing to 10 kt after midnight. 
Seas 3 ft.
.SUN...S wind 10 kt becoming SE 30 kt in the afternoon. 
Seas 2 ft building to 5 ft in the afternoon. Snow showers and 
widespread rain showers.
.SUN NIGHT...S wind 40 kt. Seas 6 ft.
.MON...S wind 20 kt. Seas 3 ft.
.TUE...SW wind 15 kt. Seas 2 ft.
.WED...W wind 10 kt. Seas 3 ft.

$$

PKZ172-200130-
Cape Sarichef to Nikolski Pacific Side-
334 AM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY...

.TODAY...W wind 30 kt. Seas 12 ft.
.TONIGHT...W wind 30 kt. Seas 11 ft.
.SUN...SW wind 25 kt becoming S 50 kt in the afternoon. Seas 10 ft
building to 17 ft in the afternoon. Widespread rain showers.
.SUN NIGHT...S wind 50 kt. Seas 22 ft.
.MON THROUGH TUE...SW wind 25 kt. Seas 20 ft.
.WED...NW wind 15 kt. Seas 17 ft.

$$

PKZ173-200130-
Nikolski to Seguam Island Bering Side-
334 AM AKST Sat Dec 19 2020

...GALE WARNING SUNDAY...

.TODAY...W wind 25 kt. Seas 10 ft.
.TONIGHT...W wind 25 kt becoming S after midnight. Seas 8 ft.
.SUN...SE wind 40 kt. Seas 9 ft building to 15 ft in the
afternoon. Widespread snow and rain showers.
.SUN NIGHT...S wind 40 kt. Seas 14 ft.
.MON...S wind 20 kt. Seas 10 ft.
.TUE...W wind 20 kt. Seas 15 ft.
.WED...W wind 15 kt. Seas 14 ft.

$$

PKZ174-200130-
Nikolski to Seguam Island Pacific Side-
334 AM AKST Sat Dec 19 2020

...STORM WARNING SUNDAY...

.TODAY...W wind 30 kt. Seas 12 ft.
.TONIGHT...W wind 25 kt becoming S after midnight. Seas 13 ft.
.SUN...S wind 40 kt increasing to 50 kt in the afternoon. 
Seas 13 ft building to 20 ft in the afternoon. Widespread rain and 
snow showers.
.SUN NIGHT...SW wind 40 kt. Seas 20 ft.
.MON...S wind 25 kt. Seas 21 ft.
.TUE THROUGH WED...W wind 20 kt. Seas 21 ft.

$$

PKZ175-200130-
Seguam Island to Adak Bering Side-
334 AM AKST Sat Dec 19 2020

...GALE WARNING SUNDAY...

.TODAY...W wind 25 kt. Seas 9 ft.
.TONIGHT...W wind 25 kt becoming SE after midnight. Seas 9 ft.
.SUN...SE wind 35 kt. Seas 10 ft. Widespread snow showers.
.SUN NIGHT...SW wind 30 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 9 ft.
.TUE...W wind 25 kt. Seas 23 ft.
.WED...SW wind 25 kt. Seas 16 ft.

$$

PKZ176-200130-
Seguam Island to Adak Pacific Side-
334 AM AKST Sat Dec 19 2020

...GALE WARNING SUNDAY...

.TODAY...W wind 30 kt. Seas 13 ft.
.TONIGHT...W wind 30 kt in the evening becoming S. Seas 12 ft.
.SUN...S wind 40 kt becoming SW 30 kt in the afternoon. 
Seas 16 ft.
.SUN NIGHT...SW wind 30 kt. Seas 16 ft.
.MON...SW wind 20 kt. Seas 22 ft.
.TUE...W wind 25 kt. Seas 22 ft.
.WED...SW wind 25 kt. Seas 15 ft.

$$

PKZ177-200130-
Adak to Kiska-
334 AM AKST Sat Dec 19 2020

...GALE WARNING TONIGHT...

.TODAY...W wind 30 kt. Seas 13 ft.
.TONIGHT...SW wind 20 kt becoming SE 35 kt after midnight. 
Seas 13 ft. Widespread snow and rain showers.
.SUN...S wind 30 kt diminishing to 15 kt in the afternoon. 
Seas 13 ft.
.SUN NIGHT...S wind 15 kt. Seas 17 ft.
.MON THROUGH TUE...W wind 25 kt. Seas 22 ft.
.WED...SW wind 25 kt. Seas 16 ft.

$$

PKZ178-200130-
Kiska to Attu-
334 AM AKST Sat Dec 19 2020

...GALE WARNING TONIGHT...

.TODAY...W wind 25 kt becoming S in the afternoon. Seas 13 ft.
.TONIGHT...SE wind 35 kt. Seas 14 ft. Snow showers.
.SUN...SE wind 30 kt. Seas 18 ft.
.SUN NIGHT...NE wind 20 kt. Seas 18 ft.
.MON...NW wind 30 kt. Seas 25 ft.
.TUE...W wind 30 kt. Seas 22 ft.
.WED...SW wind 30 kt. Seas 18 ft.

$$

PKZ179-200130-
Pribilof Islands Near Shore Waters-
334 AM AKST Sat Dec 19 2020

...SMALL CRAFT ADVISORY TODAY AND SUNDAY...

.TODAY...N wind 30 kt becoming NW 20 kt in the afternoon. 
Seas 9 ft. Freezing spray.
.TONIGHT...NW wind 20 kt. Seas 7 ft. Freezing spray.
.SUN...SW wind 15 kt becoming SE 25 kt in the afternoon. 
Seas 7 ft.
.SUN NIGHT...E wind 40 kt. Seas 12 ft.
.MON...S wind 20 kt. Seas 10 ft.
.TUE...NW wind 20 kt. Seas 10 ft.
.WED...W wind 20 kt. Seas 10 ft.

$$

PKZ180-200130-
Kuskokwim Delta and Etolin Strait-
334 AM AKST Sat Dec 19 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...E wind 25 kt. Seas in ice free waters 8 ft. Freezing
spray.
.TONIGHT...N wind 25 kt. Seas in ice free waters 7 ft. Freezing
spray.
.SUN...NW wind 25 kt becoming S in the afternoon. Seas in ice free
waters 6 ft. Freezing spray.
.SUN NIGHT...E wind 40 kt. Seas in ice free waters 11 ft.
.MON...SE wind 40 kt. Seas in ice free waters 11 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.

$$

PKZ181-200130-
North and West of Nunivak Island-
334 AM AKST Sat Dec 19 2020

...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...NE wind 20 kt. Seas in ice free waters 4 ft. Heavy
freezing spray.
.TONIGHT...N wind 15 kt in the evening becoming variable 10 kt.
Seas in ice free waters 3 ft.
.SUN...E wind 15 kt. Seas in ice free waters 3 ft.
.SUN NIGHT...E wind 35 kt. Seas in ice free waters 6 ft.
.MON...NE wind 40 kt. Seas in ice free waters 8 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.

$$

PKZ185-200130-
Saint Matthew Island Waters-
334 AM AKST Sat Dec 19 2020

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...N wind 20 kt. Seas 7 ft. Freezing spray.
.TONIGHT...NW wind 15 kt E of Saint Matthew Island...N 20 kt W of
Saint Matthew Island. Seas 7 ft. Freezing spray.
.SUN...E of Saint Matthew Island, NW wind 15 kt in the morning
becoming variable 10 kt. W of Saint Matthew Island, E wind 20 kt.
Seas 8 ft.
.SUN NIGHT...E wind 40 kt. Seas 10 ft.
.MON...NE wind 40 kt. Seas 19 ft.
.TUE...NW wind 30 kt. Seas 19 ft.
.WED...W wind 20 kt. Seas 11 ft.

$$

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.

$$

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.

$$

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

.ANALYSIS AND UPPER LEVELS...

An upper-level low situated over the northern Gulf is vertically
stacked with a 972 mb surface low positioned south of Middleton
Island. Both features are tracking slowly northeast with a mix of
rain and snow spreading from Middleton Island north across Prince
William Sound. Across the northern Gulf and along the immediate
coast, most of the precipitation is in the form of rain; however,
farther north and west, from Valdez and Thompson Pass to Whittier
and Seward, the precipitation is falling as snow. Strong outflow
winds are also occurring, a result of the increased pressure
gradient between the low and a strong ridge of high pressure over
the interior of the state. The winds are quite gusty across the
Mat Valley, as well as the usual gap locations such as Whitter,
Seward, and Valdez. The gusty winds are also producing blizzard
conditions along the Richardson Highway in Thompson Pass.

Farther west, the ridge is extending over the Kuskokwim Valley,
where areas of clear skies and light winds are allowing
temperatures to fall between 10 and 20 below zero. Temperatures
are slightly warmer along the Southwest coast as clouds associated
with a front move over the area. This front is attached to a 970
mb surface low situated west of the Pribilofs. This feature is
spinning underneath a broader upper-level trough encompassing much
of the Bering. The bulk of the storm activity, though, remains
south of the Aleutian Chain in conjunction with a strong upper-
level jet well south of the state.

&&

.MODEL DISCUSSION...

The biggest challenge in the short term is the evolution of an
elongated shortwave as it tracks from south of the AKPEN to the
northern Gulf Friday into Saturday. Previous runs of the GFS,
through 00z, indicated the shortwave phasing more with the broader
trough over the Bering that is extending to western Alaska. Other
deterministic runs (EC, NAM, GEM) indicated a lack of phasing,
with the bulk of the upper-level energy shifting east toward the
eastern Gulf. The result of this difference was that the GFS spun
up a rather deep surface low south of the Kenai Peninsula that
then tracked into western Prince William Sound. Other guidance
kept this as a weaker surface low, or trough, with lighter
precipitation and winds. The 06z runs of the GFS and NAM still
showed this difference; however, the GFS has trended weaker with
the surface low with the NAM still initially spinning up a weaker
surface low that then transitions to an open wave as the low in
the eastern Gulf deepens. Given the difference, a blend of the NAM
and GFS was favored. This would bring a round of light snow to
the Kenai Peninsula, Anchorage Bowl, and Mat-Su Valleys for
Saturday.

Out west, models are in better agreement with one low moving from
the Pribilofs to Bristol Bay by late Saturday. Guidance is also
keying in on a broad, complex low over the western Bering
dissipating by Sunday as a front attached to a North Pacific low
lifts toward the western Aleutians.

&&

.AVIATION...

PANC...VFR conditions and light winds are expected through midday
Friday when MVFR ceilings are likely. Light snow is likely to
develop over the airport complex by Saturday morning with MVFR
ceilings and visibility. IFR ceilings and visibility is possible
Saturday morning, but confidence is low regarding snow intensity
and is therefore not included in the 12z TAF package.

&&

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

A low over the north central Gulf continues to produce rain along
the Gulf, but thus far has been under-performing even along the
coast, with Valdez and Cordova only briefly getting periods of
snow and rain respectively thus far overnight. Through Thompson
Pass, the Blizzard Warning remains in effect until noon. The winds
through the pass have been over-performing, with gusts to 65 mph
common overnight. Presuming lots of transportable snow is being
raised by these winds, blizzard conditions are ongoing through the
Pass. By noon, the low moving east of Cape Suckling along with
diminishing winds should result in improving conditions in
Thompson Pass. Elsewhere gusty winds through the passes that drain
the Copper River Basin will continue, while gradually diminishing
through tonight.

A weak upper level wave will move south to north across the area
today. For now it appears a lack of moisture will be the primary
reason most areas see flurries at most, with the most likely quick
hit of snow over the mountains east of Anchorage and the Mat-Su.
Behind this wave, winds turning onshore across the Gulf will begin
to add moisture to the atmosphere tonight. Meanwhile, in the upper
levels, a weak low will develop over the Lower Kuskokwim Valley
tonight, while a disturbance moves northeastward across the Gulf.
This shortwave disturbance will likewise move south to north
across Southcentral. However, with additional moisture, there are
improving probabilities that many of us will see periods of light
snow starting early Saturday morning and continuing through most
of the day. Light would be the key word though, with most areas
expected to see a trace to 2 inches of new snow accumulation,
isolated heavier bands could result in a few 3 inch readings. As
is nearly always the case with these small, relatively localized
events, it's the small details that will determine exact snowfall
amounts, which are nearly impossible to accurately predict. Thus,
while confidence is increasing that there will be periods of light
snow, how long it lasts and who sees the most snow remains highly
uncertain. By Saturday night, the front will have lifted into the
Chugach and Talkeetna Mountains, with periods of light snow
expected into Saturday night for the Copper River Basin with
similar accumulations expected.

&&

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

A 970 mb low will continue to trek eastward across the Southern
Bering towards Bristol Bay. This storm will gradually weaken along
the way and the pressure gradient forces will steadily erode. 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.

&&

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

A 970 mb low continues to move across the Southern Bering towards
Bristol Bay. This forecast period, expect this low to gradually
fill as time elapses. Impacts include the potential for gales to
small craft winds and intermittent light rain/snow showers. All
eyes will be on the second storm which is currently near northern
Japan. This system will rapidly intensify Saturday southwest of
Attu Island and is on a collision course for the Aleutians. High
confidence in 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/Sunday through Tuesday)...

Gulf of Alaska:

There is high confidence an area of low pressure will exist over
Prince William Sound through Monday morning. Westerly winds up to
35 kts are possible, but most of the Gulf will remain within
small craft advisory criteria. On Monday afternoon there is high
confidence a gale force front will move into the western Gulf
where it will slowly move east at gale force through Tuesday. Long
fetch southerly winds will result in waves greater than 20 feet.

Bering Sea:

A strong, complex low with multiple centers is expected to move
into the western Bering on Sunday, moving slowly into the central
Bering by Tuesday. There is high confidence the front will move
across the Bering at gale force through Monday morning. Gales are
expected to persist around the low with isolated areas of storms
possible near the individual low centers. Forecast confidence is
low in regards to the location of the meso-lows and therefore the
area(s) of stronger winds.

&&

.LONG TERM FORECAST (Days 4 through 7/Monday through
Thursday)...

A deep trough is expected to remain over the Bering Sea while a
high amplitude ridge builds over western Alaska Monday and moves
east over Southeast Alaska through Thursday. This pattern will
result in active weather throughout the AOR. Over the Bering, a
broad low with multiple centers is expected to persist through
Thursday. The main feature for southern Alaska will be the large
warm front expected to reach Southwest Alaska on Monday. The
moisture feed extends down into the tropics, so moderate to heavy
rain is possible for the AKPen and portions of Southwest. A
transition to snow is likely over the interior but the exact
location of the transition remains uncertain at this time. The
front then reaches Southcentral on Tuesday, with rain likely over
lower coastal elevations. The exact rain/snow line is uncertain at
this time due to the large number of upper level and potential
surface lows developing along the front. By Wednesday forecast
confidence remains low; however, active weather should continue as
Southcentral will remain in a region of upper level divergence
and therefore favors storm development.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Blizzard Warning 131.
MARINE...Gale Warning 119 170 173 351 352.
		 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...CJ