Heavy Freezing Spray Warning 69, NWS Anchorage, AK

570 
FZAK52 PAFC 190103
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
403 PM AKST Thu Feb 18 2021

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ199-191400-
403 PM AKST Thu Feb 18 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 954 mb low moves to 115 nm north of Amchitka at 980 mb for Sat 
afternoon. Its front extends across the southern Bering to the 
Alaska Peninsula through Sat afternoon. A 986 mb low forms on the 
front 100 nm north of Dutch Harbor Fri afternoon and moves to 70 nm 
south of Chignik at 970 mb by Sat afternoon.

$$

PKZ150-191400-
South of the AK Peninsula Sitkinak to Castle Cape-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...NW wind 30 kt. Seas 12 ft. Freezing spray.
.FRI...NW wind 25 kt becoming SW in the afternoon. Seas 10 ft.
Freezing spray.
.FRI NIGHT...SE wind 25 kt. Seas 9 ft. Freezing spray. Snow.
.SAT...SE wind 30 kt. Seas 14 ft.
.SAT NIGHT...NW wind 35 kt. Seas 21 ft.
.SUN THROUGH MON...W wind 30 kt. Seas 17 ft.
.TUE...SW wind 25 kt. Seas 14 ft.

$$

PKZ155-191400-
South of the AK Peninsula Castle Cape to Cape Sarichef-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...W wind 20 kt except NW 30 kt from the Shumagin Islands
E. Seas 8 ft.
.FRI...SE wind 25 kt. From the Shumagin Islands E, SW wind 15 kt
becoming SE 25 kt in the afternoon. Seas 9 ft. Rain.
.FRI NIGHT...SW wind 25 kt. Seas 12 ft.
.SAT...NW wind 30 kt. Seas 16 ft.
.SAT NIGHT...W wind 35 kt. Seas 18 ft.
.SUN...W wind 30 kt. Seas 17 ft.
.MON THROUGH TUE...S wind 30 kt. Seas 15 ft.

$$

PKZ160-191400-
Bristol Bay-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...NW wind 20 kt. Seas 5 ft. Heavy freezing spray.
.FRI...NE wind 15 kt becoming E 25 kt in the afternoon. Seas 2 ft
building to 5 ft in the afternoon. Heavy freezing spray.
.FRI NIGHT...NE wind 35 kt. Seas 7 ft. Heavy freezing spray.
.SAT...NE wind 30 kt. Seas 7 ft.
.SAT NIGHT...N wind 25 kt. Seas 6 ft.
.SUN...NW wind 25 kt. Seas 6 ft.
.MON...E wind 20 kt. Seas 5 ft.
.TUE...S wind 20 kt. Seas 6 ft.

$$

PKZ165-191400-
Port Heiden to Cape Sarichef-
403 PM AKST Thu Feb 18 2021

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...NW wind 25 kt becoming NE 15 kt after midnight. Seas
6 ft. Freezing spray.
.FRI...E wind 30 kt. From Port Moller E, E wind 20 kt increasing
to 30 kt in the afternoon. Seas 7 ft. Freezing spray. Snow.
.FRI NIGHT...SE wind 30 kt becoming N 20 kt after midnight. From
Port Moller E, E wind 35 kt. Seas 9 ft. Freezing spray.
.SAT...N wind 25 kt. Seas 8 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 25 kt. Seas 7 ft.
.MON...S wind 30 kt. Seas 7 ft.
.TUE...S wind 30 kt. Seas 15 ft.

$$

PKZ170-191400-
Cape Sarichef to Nikolski Bering Side-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...S wind 20 kt becoming SE 30 kt after midnight. Seas 6
ft.
.FRI...SE wind 30 kt. Seas 8 ft. Snow.
.FRI NIGHT...W wind 30 kt becoming NW 20 kt after midnight. Seas
9 ft.
.SAT AND SAT NIGHT...N wind 15 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 9 ft.
.MON...S wind 30 kt. Seas 11 ft.
.TUE...SW wind 30 kt. Seas 17 ft.

$$

PKZ171-191400-
Unalaska Bay-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...S wind 10 kt increasing to 20 kt after midnight. Seas
3 ft. Snow.
.FRI...SE wind 25 kt. Seas 3 ft. Rain and snow.
.FRI NIGHT...W wind 30 kt becoming NW 15 kt after midnight. Seas
5 ft.
.SAT...NW wind 15 kt. Seas 5 ft.
.SAT NIGHT...NW wind 10 kt. Seas 3 ft.
.SUN...W wind 10 kt. Seas 3 ft.
.MON THROUGH TUE...S wind 25 kt. Seas 4 ft.

$$

PKZ172-191400-
Cape Sarichef to Nikolski Pacific Side-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...SW wind 20 kt becoming SE 30 kt after midnight. Seas
8 ft. Rain.
.FRI...SE wind 30 kt becoming SW 20 kt in the afternoon. Seas 10 ft.
Rain.
.FRI NIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Seas 12 ft.
.SAT AND SAT NIGHT...W wind 25 kt. Seas 15 ft.
.SUN...W wind 25 kt. Seas 18 ft.
.MON THROUGH TUE...SW wind 30 kt. Seas 15 ft.

$$

PKZ173-191400-
Nikolski to Seguam Island Bering Side-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...SE wind 30 kt. Seas 10 ft. Rain and snow.
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...W wind 20 kt in the evening becoming variable 10 kt.
Seas 8 ft.
.SAT...SW wind 15 kt. Seas 8 ft.
.SAT NIGHT...SW wind 20 kt. Seas 9 ft.
.SUN...SW wind 25 kt. Seas 11 ft.
.MON...S wind 30 kt. Seas 11 ft.
.TUE...SW wind 30 kt. Seas 19 ft.

$$

PKZ174-191400-
Nikolski to Seguam Island Pacific Side-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...SE wind 30 kt. Seas 12 ft. Rain and snow.
.FRI...SW wind 20 kt. Seas 12 ft.
.FRI NIGHT...NW wind 15 kt. Seas 10 ft.
.SAT AND SAT NIGHT...SW wind 25 kt. Seas 17 ft.
.SUN...SW wind 25 kt. Seas 19 ft.
.MON...S wind 35 kt. Seas 16 ft.
.TUE...SW wind 30 kt. Seas 16 ft.

$$

PKZ175-191400-
Seguam Island to Adak Bering Side-
403 PM AKST Thu Feb 18 2021

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt diminishing to 25 kt after midnight. Seas 
10 ft. Rain and snow.
.FRI...W wind 20 kt. Seas 7 ft.
.FRI NIGHT...S wind 20 kt. Seas 7 ft.
.SAT...S wind 20 kt. Seas 7 ft.
.SAT NIGHT...W wind 20 kt. Seas 8 ft.
.SUN...S wind 25 kt. Seas 9 ft.
.MON...S wind 30 kt. Seas 14 ft.
.TUE...SW wind 30 kt. Seas 18 ft.

$$

PKZ176-191400-
Seguam Island to Adak Pacific Side-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...SE wind 30 kt becoming W 20 kt after midnight. Seas 13 
ft. Rain and snow.
.FRI...W wind 20 kt. Seas 12 ft.
.FRI NIGHT...S wind 25 kt. Seas 12 ft.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 20 ft.
.SUN...SW wind 30 kt. Seas 20 ft.
.MON...S wind 35 kt. Seas 17 ft.
.TUE...SW wind 30 kt. Seas 18 ft.

$$

PKZ177-191400-
Adak to Kiska-
403 PM AKST Thu Feb 18 2021

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt diminishing to 25 kt after midnight. Seas
14 ft.
.FRI...SW wind 25 kt. Seas 14 ft.
.FRI NIGHT...S wind 25 kt. Seas 11 ft Bering side... 17 ft Pac
side.
.SAT...SW wind 30 kt. Seas 19 ft.
.SAT NIGHT...W wind 30 kt. Seas 21 ft.
.SUN...S wind 30 kt. Seas 17 ft.
.MON THROUGH TUE...S wind 35 kt. Seas 22 ft.

$$

PKZ178-191400-
Kiska to Attu-
403 PM AKST Thu Feb 18 2021

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt from Shemya E, From Shemya W...SW wind 25 kt.
Seas 19 ft.
.FRI...SW wind 30 kt. Seas 19 ft.
.FRI NIGHT...S wind 25 kt. Seas 18 ft.
.SAT...NW wind 20 kt. Seas 18 ft.
.SAT NIGHT...W wind 25 kt. Seas 18 ft.
.SUN...S wind 30 kt. Seas 14 ft.
.MON THROUGH TUE...S wind 30 kt. Seas 25 ft.

$$

PKZ179-191400-
Pribilof Islands Near Shore Waters-
403 PM AKST Thu Feb 18 2021

...GALE WARNING FRIDAY...

.TONIGHT...E wind 15 kt increasing to 30 kt after midnight. Seas
6 ft. Freezing spray. Snow.
.FRI...E wind 35 kt. Seas 13 ft. Freezing spray. Snow.
.FRI NIGHT...E wind 30 kt diminishing to 20 kt after midnight. Seas 
12 ft. Freezing spray.
.SAT...NE wind 20 kt. Seas 9 ft.
.SAT NIGHT...NE wind 15 kt. Seas 9 ft.
.SUN...N wind 15 kt. Seas 8 ft.
.MON...SE wind 25 kt. Seas 9 ft.
.TUE...S wind 25 kt. Seas 16 ft.

$$

PKZ180-191400-
Kuskokwim Delta and Etolin Strait-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...N wind 25 kt. Seas in ice free waters 4 ft. Heavy
freezing spray.
.FRI...E wind 30 kt. Seas in ice free waters 6 ft. Heavy freezing
spray.
.FRI NIGHT...NE wind 35 kt from Cape Newenham S, NE wind 25 kt from 
Cape Newenham N. Seas in ice free waters 9 ft. Heavy freezing spray.
.SAT...NE wind 30 kt. Seas in ice free waters 8 ft.
.SAT NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.SUN...NW wind 25 kt. Seas in ice free waters 5 ft.
.MON...E wind 25 kt. Seas in ice free waters 5 ft.
.TUE...SE wind 25 kt. Seas in ice free waters 9 ft.

$$

PKZ181-191400-
North and West of Nunivak Island-
403 PM AKST Thu Feb 18 2021

...BRISK WIND ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 20 kt.
.FRI...E wind 25 kt.
.FRI NIGHT...NE wind 25 kt.
.SAT AND SAT NIGHT...N wind 20 kt.
.SUN...N wind 15 kt.
.MON THROUGH TUE...E wind 20 kt.

$$

PKZ185-191400-
Saint Matthew Island Waters-
403 PM AKST Thu Feb 18 2021

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

.TONIGHT...E wind 30 kt E of Saint Matthew Island...E 40 kt W of
Saint Matthew Island. Seas in ice free waters 12 ft. Heavy
freezing spray.
.FRI...E wind 30 kt E of Saint Matthew Island...E 45 kt W of Saint
Matthew Island. Seas in ice free waters 20 ft. Heavy freezing
spray. Widespread snow showers.
.FRI NIGHT...NE wind 30 kt E of Saint Matthew Island... E 40 kt W
of Saint Matthew Island. Seas in ice free waters 20 ft. Heavy 
freezing spray.
.SAT...NE wind 30 kt. Seas in ice free waters 15 ft.
.SAT NIGHT...NE wind 25 kt. Seas in ice free waters 11 ft.
.SUN...NE wind 25 kt. Seas in ice free waters 8 ft.
.MON...NE wind 30 kt. Seas in ice free waters 13 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 18 ft.

$$

473 
FZAK52 PAFC 191304
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
404 AM AKST Fri Feb 19 2021

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ199-200200-
404 AM AKST Fri Feb 19 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 960 mb low moves to 110 nm south of Attu at 973 mb Sat morning 
then to 100 nm north of Adak by Sun morning. A 985 mb low forms 
100 nm north of Nikolski Fri morning and moves to 70 nm northwest 
of Cold Bay at 970 mb by Sat morning as it weakens. Another low 
moves to 170 nm south of Dutch Harbor Sat morning then to 90 nm 
south of Chignik Sat evening as it exits into the Gulf.

$$

PKZ150-200200-
South of the AK Peninsula Sitkinak to Castle Cape-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NW wind 25 kt becoming SW in the afternoon. Seas 10 ft.
Freezing spray.
.TONIGHT...SE wind 25 kt. Seas 9 ft. Freezing spray. Snow.
.SAT...E wind 30 kt. Seas 13 ft. Freezing spray. Snow.
.SAT NIGHT...NW wind 35 kt. Seas 24 ft.
.SUN...W wind 30 kt. Seas 21 ft.
.MON...W wind 30 kt. Seas 15 ft.
.TUE...S wind 25 kt. Seas 12 ft.

$$

PKZ155-200200-
South of the AK Peninsula Castle Cape to Cape Sarichef-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...SE wind 25 kt. From the Shumagin Islands E, SW wind 15 kt
becoming SE 25 kt in the afternoon. Seas 9 ft. Rain.
.TONIGHT...SW wind 25 kt. Seas 13 ft.
.SAT...NW wind 20 kt increasing to 30 kt in the afternoon. Seas
12 ft building to 18 ft in the afternoon. Rain and snow.
.SAT NIGHT...W wind 35 kt. Seas 22 ft.
.SUN...W wind 30 kt. Seas 16 ft.
.MON THROUGH TUE...S wind 30 kt. Seas 15 ft.

$$

PKZ160-200200-
Bristol Bay-
404 AM AKST Fri Feb 19 2021

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

.TODAY...NE wind 15 kt becoming E 25 kt in the afternoon. Seas 2
ft building to 5 ft in the afternoon. Heavy freezing spray.
.TONIGHT...NE wind 35 kt. Seas 7 ft. Heavy freezing spray.
.SAT...NE wind 30 kt. Seas 7 ft. Heavy freezing spray.
.SAT NIGHT...N wind 25 kt. Seas 5 ft.
.SUN...NW wind 25 kt. Seas 7 ft.
.MON...NE wind 20 kt. Seas 6 ft.
.TUE...S wind 25 kt. Seas 6 ft.

$$

PKZ165-200200-
Port Heiden to Cape Sarichef-
404 AM AKST Fri Feb 19 2021

...GALE WARNING TONIGHT...

.TODAY...E wind 30 kt. From Port Moller E, E wind 20 kt increasing
to 30 kt in the afternoon. Seas 7 ft. Freezing spray. Snow.
.TONIGHT...SE wind 30 kt becoming N 20 kt after midnight. From
Port Moller E, E wind 35 kt. Seas 9 ft. Freezing spray.
.SAT...NE wind 25 kt. Seas 8 ft. Freezing spray.
.SAT NIGHT...NW wind 20 kt. Seas 7 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON THROUGH TUE...S wind 30 kt. Seas 11 ft.

$$

PKZ170-200200-
Cape Sarichef to Nikolski Bering Side-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SE wind 30 kt. Seas 8 ft. Snow.
.TONIGHT...W wind 30 kt becoming NW 20 kt after midnight. Seas 8
ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SAT NIGHT...N wind 15 kt. Seas 8 ft.
.SUN...W wind 15 kt. Seas 8 ft.
.MON...S wind 30 kt. Seas 13 ft.
.TUE...SW wind 30 kt. Seas 17 ft.

$$

PKZ171-200200-
Unalaska Bay-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SE wind 25 kt. Seas 3 ft. Rain and snow.
.TONIGHT...W wind 30 kt becoming NW 15 kt after midnight. Seas 5
ft.
.SAT...NW wind 15 kt. Seas 5 ft. Snow showers.
.SAT NIGHT...NW wind 10 kt. Seas 3 ft.
.SUN...W wind 10 kt. Seas 3 ft.
.MON THROUGH TUE...S wind 25 kt. Seas 4 ft.

$$

PKZ172-200200-
Cape Sarichef to Nikolski Pacific Side-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...SE wind 30 kt. Seas 11 ft. Rain.
.TONIGHT...W wind 25 kt diminishing to 15 kt after midnight. Seas
12 ft. Rain and snow showers.
.SAT...W wind 25 kt. Seas 16 ft. Snow and rain showers.
.SAT NIGHT...W wind 25 kt. Seas 17 ft.
.SUN...W wind 25 kt. Seas 16 ft.
.MON THROUGH TUE...SW wind 30 kt. Seas 18 ft.

$$

PKZ173-200200-
Nikolski to Seguam Island Bering Side-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 25 kt. Seas 9 ft.
.TONIGHT...W wind 20 kt in the evening becoming variable 10 kt.
Seas 8 ft.
.SAT...SW wind 15 kt. Seas 9 ft.
.SAT NIGHT...SW wind 20 kt. Seas 10 ft.
.SUN...SW wind 20 kt. Seas 9 ft.
.MON THROUGH TUE...SW wind 30 kt. Seas 15 ft.

$$

PKZ174-200200-
Nikolski to Seguam Island Pacific Side-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...SW wind 20 kt. Seas 12 ft.
.TONIGHT...NW wind 15 kt. Seas 11 ft.
.SAT...SW wind 25 kt. Seas 13 ft building to 19 ft in the
afternoon. Snow showers.
.SAT NIGHT...SW wind 25 kt. Seas 18 ft.
.SUN...SW wind 25 kt. Seas 17 ft.
.MON THROUGH TUE...SW wind 30 kt. Seas 20 ft.

$$

PKZ175-200200-
Seguam Island to Adak Bering Side-
404 AM AKST Fri Feb 19 2021

.TODAY...W wind 20 kt. Seas 7 ft.
.TONIGHT...S wind 20 kt. Seas 8 ft.
.SAT...S wind 20 kt. Seas 8 ft.
.SAT NIGHT...W wind 20 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 8 ft.
.MON THROUGH TUE...SW wind 25 kt. Seas 15 ft.

$$

PKZ176-200200-
Seguam Island to Adak Pacific Side-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY...

.TODAY...W wind 20 kt. Seas 12 ft.
.TONIGHT...S wind 25 kt. Seas 13 ft.
.SAT...SW wind 30 kt. Seas 18 ft. Snow showers.
.SAT NIGHT...W wind 30 kt. Seas 20 ft.
.SUN THROUGH TUE...SW wind 30 kt. Seas 20 ft.

$$

PKZ177-200200-
Adak to Kiska-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...SW wind 25 kt. Seas 14 ft.
.TONIGHT...S wind 25 kt. Seas 16 ft.
.SAT...SW wind 30 kt. Seas 11 ft Bering side... 18 ft Pacific side.
Snow showers.
.SAT NIGHT...W wind 30 kt. Seas 21 ft.
.SUN...S wind 30 kt. Seas 16 ft.
.MON THROUGH TUE...SW wind 25 kt. Seas 19 ft.

$$

PKZ178-200200-
Kiska to Attu-
404 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 30 kt. Seas 18 ft.
.TONIGHT...S wind 25 kt. Seas 17 ft.
.SAT...NE wind 15 kt becoming NW in the afternoon. Seas 18 ft.
.SAT NIGHT...W wind 25 kt. Seas 18 ft.
.SUN...S wind 30 kt. Seas 15 ft.
.MON...SW wind 25 kt. Seas 15 ft.
.TUE...W wind 30 kt. Seas 15 ft.

$$

PKZ179-200200-
Pribilof Islands Near Shore Waters-
404 AM AKST Fri Feb 19 2021

...GALE WARNING TODAY...

.TODAY...E wind 35 kt. Seas 14 ft. Freezing spray. Snow.
.TONIGHT...E wind 30 kt. Seas 14 ft. Freezing spray. Snow.
.SAT...NE wind 20 kt. Seas 9 ft. Freezing spray.
.SAT NIGHT...NE wind 15 kt. Seas 8 ft.
.SUN...Variable wind 10 kt. Seas 8 ft.
.MON...SE wind 20 kt. Seas 13 ft.
.TUE...S wind 25 kt. Seas 18 ft.

$$

PKZ180-200200-
Kuskokwim Delta and Etolin Strait-
404 AM AKST Fri Feb 19 2021

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

.TODAY...E wind 30 kt. Seas in ice free waters 6 ft. Heavy
freezing spray.
.TONIGHT...NE wind 35 kt. Seas in ice free waters 9 ft. Heavy
freezing spray.
.SAT...NE wind 30 kt. Seas in ice free waters 7 ft. Heavy freezing
spray.
.SAT NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.SUN...NW wind 25 kt. Seas in ice free waters 6 ft.
.MON...E wind 20 kt. Seas in ice free waters 7 ft.
.TUE...S wind 25 kt. Seas in ice free waters 10 ft.

$$

PKZ181-200200-
North and West of Nunivak Island-
404 AM AKST Fri Feb 19 2021

...BRISK WIND ADVISORY THROUGH TONIGHT...

.TODAY...E wind 25 kt.
.TONIGHT...NE wind 25 kt.
.SAT...NE wind 20 kt.
.SAT NIGHT...N wind 20 kt.
.SUN...N wind 15 kt.
.MON...NE wind 20 kt.
.TUE...SE wind 20 kt.

$$

PKZ185-200200-
Saint Matthew Island Waters-
404 AM AKST Fri Feb 19 2021

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

.TODAY...E wind 30 kt E of Saint Matthew Island...E 45 kt W of
Saint Matthew Island. Seas in ice free waters 20 ft. Heavy freezing 
spray. Widespread snow showers.
.TONIGHT...NE wind 30 kt E of Saint Matthew Island...E 40 kt W of
Saint Matthew Island. Seas in ice free waters 19 ft. Heavy
freezing spray.
.SAT...NE wind 25 kt E of Saint Matthew Island... NE 30 kt W of
Saint Matthew Island. Seas in ice free waters 15 ft. Heavy
freezing spray.
.SAT NIGHT...NE wind 25 kt. Seas in ice free waters 11 ft.
.SUN...NE wind 20 kt. Seas in ice free waters 8 ft.
.MON...NE wind 30 kt. Seas in ice free waters 13 ft.
.TUE...N wind 30 kt. Seas in ice free waters 17 ft.

$$

680 
FZAK52 PAFC 200028
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
328 PM AKST Fri Feb 19 2021

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ199-201245-
328 PM AKST Fri Feb 19 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 965 mb low 265 nm West of Attu moves to 75 nm Southwest of Adak
at 993 mb by Sun morning and dissipates Sun afternoon. Its front 
extends over the Bering and Alaska Peninsula and moves into 
Southwest Alaska through Sun morning. A 973 mb low and front move 
over the Western Aleutians and Bering for Sun afternoon.

$$

PKZ150-201245-
South of the AK Peninsula Sitkinak to Castle Cape-
328 PM AKST Fri Feb 19 2021

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...SE wind increasing to 30 kt. Seas 12 ft. Freezing spray. 
Snow.
.SAT...SE wind 35 kt. Seas 14 ft. Freezing spray. Snow.
.SAT NIGHT...NW wind 40 kt. Seas 22 ft. Snow and rain showers.
.SUN AND SUN NIGHT...W wind 35 kt. Seas 19 ft.
.MON...SW wind 35 kt. Seas 16 ft.
.TUE...S wind 25 kt. Seas 12 ft.
.WED...W wind 30 kt. Seas 15 ft.

$$

PKZ155-201245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
328 PM AKST Fri Feb 19 2021

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...SE wind 30 kt. Seas 15 ft.
.SAT...N wind 15 kt becoming NW 40 kt in the afternoon. From the
Shumagin Islands E, NE wind 25 kt becoming W 40 kt in the
afternoon. Seas 11 ft building to 16 ft in the afternoon. Rain and 
snow.
.SAT NIGHT...W wind 35 kt. From the Shumagin Islands E, W wind 45
kt diminishing to 35 kt after midnight. Seas 18 ft.
.SUN AND SUN NIGHT...W wind 30 kt. Seas 16 ft.
.MON...SW wind 35 kt. Seas 18 ft.
.TUE...S wind 30 kt. Seas 14 ft.
.WED...W wind 30 kt. Seas 16 ft.

$$

PKZ160-201245-
Bristol Bay-
328 PM AKST Fri Feb 19 2021

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...NE wind 35 kt. Seas 9 ft. Heavy freezing spray. Snow.
.SAT...NE wind 30 kt. Seas 7 ft. Heavy freezing spray.
.SAT NIGHT...N wind 25 kt. Seas 6 ft. Heavy freezing spray.
.SUN...NW wind 30 kt. Seas 8 ft.
.SUN NIGHT...W wind 25 kt. Seas 8 ft.
.MON...SE wind 15 kt. Seas 5 ft.
.TUE...S wind 25 kt. Seas 6 ft.
.WED...SW wind 25 kt. Seas 9 ft.

$$

PKZ165-201245-
Port Heiden to Cape Sarichef-
328 PM AKST Fri Feb 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 30 kt becoming NE 20 kt after midnight. From
Port Moller E, NE wind 40 kt diminishing to 30 kt after midnight. 
Seas 12 ft. Freezing spray.
.SAT...NE wind 25 kt. Seas 8 ft. Freezing spray.
.SAT NIGHT...N wind 20 kt. Seas 7 ft. Freezing spray.
.SUN AND SUN NIGHT...W wind 25 kt. Seas 8 ft.
.MON THROUGH TUE...S wind 30 kt. Seas 11 ft.
.WED...SW wind 25 kt. Seas 18 ft.

$$

PKZ170-201245-
Cape Sarichef to Nikolski Bering Side-
328 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TONIGHT...W wind 30 kt becoming NW 20 kt after midnight. Seas 9
ft.
.SAT...NW wind 20 kt. Seas 8 ft.
.SAT NIGHT...N wind 15 kt. Seas 7 ft.
.SUN...W wind 15 kt. Seas 7 ft.
.SUN NIGHT...SW wind 30 kt. Seas 9 ft.
.MON...S wind 30 kt. Seas 13 ft.
.TUE THROUGH WED...SW wind 30 kt. Seas 18 ft.

$$

PKZ171-201245-
Unalaska Bay-
328 PM AKST Fri Feb 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt becoming NW 20 kt after midnight. Seas 5
ft.
.SAT...NW wind 15 kt. Seas 3 ft building to 5 ft in the afternoon.
Snow showers.
.SAT NIGHT...NW wind 15 kt. Seas 3 ft. Snow showers.
.SUN...W wind 10 kt. Seas 2 ft.
.SUN NIGHT...SW wind 15 kt. Seas 2 ft.
.MON THROUGH TUE...S wind 25 kt. Seas 4 ft.
.WED...SW wind 20 kt. Seas 3 ft.

$$

PKZ172-201245-
Cape Sarichef to Nikolski Pacific Side-
328 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 13 ft.
.SAT...W wind 25 kt. Seas 14 ft. Snow and rain.
.SAT NIGHT...W wind 25 kt. Seas 17 ft.
.SUN...W wind 25 kt. Seas 16 ft.
.SUN NIGHT...SW wind 35 kt. Seas 18 ft.
.MON...S wind 35 kt. Seas 19 ft.
.TUE THROUGH WED...SW wind 30 kt. Seas 17 ft.

$$

PKZ173-201245-
Nikolski to Seguam Island Bering Side-
328 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY NIGHT...

.TONIGHT...W wind 15 kt in the evening becoming variable 10 kt.
Seas 8 ft.
.SAT...NE wind 15 kt. Seas 7 ft.
.SAT NIGHT...NW wind 15 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 9 ft.
.SUN NIGHT...S wind 30 kt. Seas 11 ft.
.MON THROUGH WED...S wind 30 kt. Seas 15 ft.

$$

PKZ174-201245-
Nikolski to Seguam Island Pacific Side-
328 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 15 kt in the evening becoming variable 10 kt.
Seas 12 ft.
.SAT...SW wind 30 kt. Seas 18 ft. Snow.
.SAT NIGHT...W wind 25 kt. Seas 19 ft. Snow showers.
.SUN...W wind 30 kt. Seas 20 ft.
.SUN NIGHT...S wind 35 kt. Seas 20 ft.
.MON...S wind 40 kt. Seas 20 ft.
.TUE THROUGH WED...S wind 30 kt. Seas 19 ft.

$$

PKZ175-201245-
Seguam Island to Adak Bering Side-
328 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 20 kt. Seas 8 ft.
.SAT...E wind 15 kt. Seas 7 ft.
.SAT NIGHT...SW wind 15 kt. Seas 7 ft.
.SUN...SW wind 20 kt. Seas 8 ft.
.SUN NIGHT...S wind 25 kt. Seas 9 ft.
.MON THROUGH TUE...SW wind 25 kt. Seas 15 ft.
.WED...S wind 25 kt. Seas 11 ft.

$$

PKZ176-201245-
Seguam Island to Adak Pacific Side-
328 PM AKST Fri Feb 19 2021

...GALE WARNING SATURDAY AND SATURDAY NIGHT...

.TONIGHT...S wind 20 kt increasing to 30 kt after midnight. 
Seas 16 ft. Snow showers.
.SAT...SW wind 35 kt. Seas 20 ft. Snow showers.
.SAT NIGHT...W wind 25 kt increasing to 35 kt after midnight. 
Seas 21 ft. Snow showers.
.SUN AND SUN NIGHT...SW wind 35 kt. Seas 20 ft.
.MON...S wind 25 kt. Seas 20 ft.
.TUE THROUGH WED...S wind 30 kt. Seas 19 ft.

$$

PKZ177-201245-
Adak to Kiska-
328 PM AKST Fri Feb 19 2021

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...S wind 20 kt becoming SW 30 kt after midnight. Bering
side, seas 11 ft. Pacific side, seas 14 ft building to 19 ft after
midnight. Snow showers.
.SAT...SW wind 30 kt. Seas 10 ft Bering side... 18 ft Pacific side.
Snow showers.
.SAT NIGHT...W wind 20 kt Bering side...W 35 kt Pacific side. Seas 
12 ft Bering side...23 ft Pacific side.
.SUN AND SUN NIGHT...SW wind 30 kt. Seas 17 ft.
.MON...S wind 30 kt. Seas 19 ft.
.TUE...SW wind 25 kt. Seas 17 ft.
.WED...SE wind 30 kt. Seas 22 ft.

$$

PKZ178-201245-
Kiska to Attu-
328 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...S wind 25 kt. Seas 17 ft. Snow showers.
.SAT...SE wind 15 kt Bering side...NW 30 kt Pacific side. 
Seas 13 ft Bering side...20 ft Pacific side.
.SAT NIGHT...Bering side, variable wind 10 kt. Pacific side, 
W wind 30 kt becoming SW 20 kt after midnight. Seas 18 ft.
.SUN AND SUN NIGHT...S wind 30 kt. Seas 16 ft.
.MON...SW wind 25 kt. Seas 17 ft.
.TUE...W wind 30 kt. Seas 15 ft.
.WED...SE wind 30 kt. Seas 22 ft.

$$

PKZ179-201245-
Pribilof Islands Near Shore Waters-
328 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...E wind 30 kt diminishing to 20 kt after midnight. 
Seas 15 ft. Freezing spray.
.SAT...NE wind 20 kt. Seas 9 ft. Freezing spray.
.SAT NIGHT...NE wind 15 kt. Seas 8 ft. Freezing spray.
.SUN...Variable wind 10 kt. Seas 7 ft.
.SUN NIGHT...E wind 25 kt. Seas 7 ft.
.MON...S wind 30 kt. Seas 13 ft.
.TUE THROUGH WED...S wind 25 kt. Seas 18 ft.

$$

PKZ180-201245-
Kuskokwim Delta and Etolin Strait-
328 PM AKST Fri Feb 19 2021

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...NE wind 35 kt. Seas in ice free waters 10 ft. 
Heavy freezing spray. Snow.
.SAT...NE wind 25 kt. Seas in ice free waters 8 ft. 
Heavy freezing spray.
.SAT NIGHT...N wind 20 kt. Seas in ice free waters 5 ft. 
Heavy freezing spray.
.SUN...NW wind 30 kt. Seas in ice free waters 7 ft.
.SUN NIGHT...NW wind 20 kt. Seas in ice free waters 5 ft.
.MON...E wind 25 kt. Seas in ice free waters 7 ft.
.TUE...S wind 25 kt. Seas in ice free waters 10 ft.
.WED...W wind 20 kt. Seas in ice free waters 11 ft.

$$

PKZ181-201245-
North and West of Nunivak Island-
328 PM AKST Fri Feb 19 2021

...BRISK WIND ADVISORY TONIGHT...

.TONIGHT...NE wind 30 kt.
.SAT...NE wind 20 kt.
.SAT NIGHT...N wind 20 kt.
.SUN...N wind 15 kt.
.SUN NIGHT...Variable wind 10 kt.
.MON...E wind 20 kt.
.TUE...SE wind 20 kt.
.WED...NW wind 20 kt.

$$

PKZ185-201245-
Saint Matthew Island Waters-
328 PM AKST Fri Feb 19 2021

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

.TONIGHT...NE wind 35 kt E of Saint Matthew Island...E 45 kt W of
Saint Matthew Island. Seas in ice free waters 20 ft. Heavy
freezing spray. Snow.
.SAT...NE wind 25 kt E of Saint Matthew Island...NE 35 kt W of Saint
Matthew Island. Seas in ice free waters 15 ft. Heavy freezing spray.
.SAT NIGHT...NE wind 25 kt. Seas in ice free waters 11 ft. Heavy
freezing spray.
.SUN...N wind 20 kt. Seas in ice free waters 8 ft.
.SUN NIGHT...NE wind 30 kt. Seas in ice free waters 8 ft.
.MON...NE wind 35 kt. Seas in ice free waters 13 ft.
.TUE...N wind 30 kt. Seas in ice free waters 17 ft.
.WED...N wind 25 kt. Seas in ice free waters 11 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
428 PM AKST Wed Feb 17 2021

.ANALYSIS AND UPPER LEVELS...
An upper level trough is extending from the Bering Strait, over
the eastern Bering Sea, and into the North Pacific. At the
surface, a low is under this trough just south of the Alaska
Peninsula. This low has been the main Bering Sea weather-maker for
the past few days. A stronger low can be seen on satellite south
of the Gulf of Alaska. This low center is heading northeast, but a
plume of moisture can be seen heading northward to the north Gulf
Coast. This moisture, in association with a surface trough
extending out of the low and toward the eastern Prince William
Sound region will be the source of snowfall over Southcentral
tonight into Thursday.

&&

.MODEL DISCUSSION...
The main model issue today is subtle, but important. It is the
westward progression of the inverted trough moving along the Gulf
coast from east-to-west overnight into tomorrow. The location
where this trough stops progressing westward and then stalls
before dissipating as it is then pushed back to the east is where
the heaviest snowfall will occur. Models had been in good
agreement with stalling it over the Anchorage and Matanuska Valley
region, but later model runs are wavering between having this
location or stalling it out farther east and keeping most of the
snowfall over the Chugach mountains with little making as far west
as Anchorage. That is the forecast problem of the day.

Other than that, models are in good synoptic agreement into the
weekend over the Gulf of Alaska and most of southern mainland
Alaska. There is still a bit of spread on the development of a low
along the front moving into the Bering Sea on Friday, though most
models have a similar track on where this low will move after
that.

&&

.AVIATION...
PANC...VFR conditions will persist through most of the night and
then snow will lower conditions to at least MVFR and possibly IFR.
There is still a bit of uncertainty as to whether the heavier snow
will set up over the airport or farther east over the Chugach
Mountains.

&&

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

Snow likely for most of Southcentral tonight through Thursday,
then colder as we end the week with outflow winds late Thursday
into Friday.

The upper level ridge over Southcentral will shift east as low
pressure moves north across eastern Gulf and an upper level
trough moves east from Southwest Alaska. This low pressure over
the Gulf will bring another front to the Prince William Sound area
with rain and snow tonight. As this low pushes north an inverted
trough will form and move over the Chugach Mountains tonight and into
the Anchorage and MATSU valleys extending south into the Kenai
Peninsula by Thursday morning. Upward vertical motion will
increase by daybreak on Thursday as a 70 to 80 knot jet streak
moves over the area this will put the Anchorage and MATSU Valleys
in the right rear quadrant of the jet enhancing upward vertical motion.
This trough and upward motion will result in bands of snow
forming with 2 to 4 inches expected from the eastern Kenai
Peninsula and up towards Anchorage and the MATSU valleys. Valdez
and Seward will see a couple of inches of snow and Cordova may see
around an inch. Clouds will begin to clear as we head into Friday
morning so expect some patchy fog and low clouds possible
Thursday night into Friday morning around Cook Inlet to include
Kenai, Anchorage area, and parts of the MAT valley. As the upper
trough moves east tomorrow evening this will shift the snow to the
east with an inch or two possible across the Copper River Basin
Thursday night and Friday. Outflow winds will increase late
tomorrow into Friday.

On Saturday another front and low pressure system will track
across the Gulf and this will bring another round of rain and
snow for mainly coastal locations from Kodiak City up towards
Cordova and Prince William Sound, while the rest of Southcentral
will remain dry on Saturday.

&&

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

A Blowing Snow Advisory remains in effect through 9pm AKST tonight
as Doppler Radar combined with observations show a snow band
bringing light to moderate snow to the Kuskokwim Delta (Bethel on
westward) with 20 to 25 mph northeasterly winds and visibilities
reaching 1/2 mile at times. The snow and blowing snow is expected
to gradually taper off this evening. Otherwise, the pattern will
remain quiet until Saturday when a front is expected to move near
Southwest Alaska. The front on Saturday is expected to bring
widespread snow to the AKPEN. There is a higher degree of
uncertainty on the extent of the precipitation into the northern
Bristol Bay area as there are different solutions on how far north
the edge of this front will extend. The offshore flow pattern
will help keep the cold air in place keeping the precipitation all
snow.

&&

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

A front will move across the Bering/Aleutians this evening through
Saturday. Widespread gale force winds are expected in the western
and central Bering/Aleutians tonight through Friday morning before
the front begins to weaken. Winds will ease to below gale force
across the Aleutians Friday morning, with the only area of
widespread gale force winds being over the north central Bering
Sea at that point. This front will bring a mix of rain and snow to
the Aleutians with rain being the dominant form of precipitation
in the mix. There is potential for a weak low to develop along
this front over the eastern Aleutians Friday night into Saturday
morning, though there is only moderate confidence at best as
guidance shows different solutions in the position and intensity
of this low.

&&

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

Bering Sea: An area of easterly gales over Bristol Bay will
diminish early Saturday morning. Heavy freezing spray will remain
possible through the day near the ice edge. Sub-gales and below 20
ft seas will continue through the weekend. Generally southerly
gales and greater than 20 ft seas will approach the western Bering
Monday, though the timing, strength and exact position remain
uncertain.

Gulf of Alaska: Brief easterly gales will possibly develop over
the Barren Islands and southern Cook Inlet Saturday evening,
though seas are not expected to exceed 20 ft. Model solutions
diverge thereafter, however westerly gales and greater than 20 ft
seas are possible in the southern Gulf on Sunday. Confidence is
actually greater on Monday as a low develops south of Prince
William Sound leading to potential high-end northwesterly gales
and building seas between the Kenai Peninsula and Kodiak.

&&

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

A series of lows will move over the Gulf through Tuesday leading
to offshore flow and cooler temperatures across much of the
mainland and precipitation along the coast. Snow is possible
across the Copper River Basin as the GFS shows a relatively
strong upper low tracking over Southwest Alaska Sunday into
Monday. All models show an upper ridge moving over Southcentral on
Tuesday which would bring warmer temperatures, before a trailing
trough and its associated front lead to more precipitation chances
for Wednesday. A series of upper troughs and surface fronts are
likewise expected to persist across the Bering/Aleutians through
mid-week. Overall model agreement is quite good, however any time
there is a pattern shift, it takes some time for them to hone in
on specific details and thus confidence remains average.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Weather Advisory: 155.
MARINE...Gale Warning: 130-132 173-178 185 351 352 411-413.
Heavy Freezing Spray Warning: 130 139 180 185 412 414.

&&

SYNOPSIS AND MODEL DISCUSSION...EZ
SOUTHCENTRAL ALASKA...RC
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...ED
MARINE/LONG TERM...AP