Gale Warning 386, NWS Anchorage, AK

606 
FZAK52 PAFC 192335
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
335 PM AKDT Mon Apr 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.

PKZ199-201215-
335 PM AKDT Mon Apr 19 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 996 mb low moves to 250 nm south of Dutch Harbor Mon evening at 
1002 mb then to 350 nm south of Dutch Harbor at 1005 mb Tue evening 
as it exits into the North Pacific. Low pressure lingers in the 
Southern Bering through Wed morning.

$$

PKZ150-201215-
South of the AK Peninsula Sitkinak to Castle Cape-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...E wind 35 kt becoming SE 25 kt after midnight. Seas
15 ft. Rain showers.
.TUE...E wind 30 kt. Seas 10 ft.
.TUE NIGHT...E wind 40 kt. Seas 13 ft.
.WED...E wind 45 kt. Seas 18 ft.
.WED NIGHT...E wind 35 kt. Seas 15 ft.
.THU...E wind 25 kt. Seas 11 ft.
.FRI...E wind 15 kt. Seas 6 ft.
.SAT...E wind 20 kt. Seas 6 ft.

$$

PKZ155-201215-
South of the AK Peninsula Castle Cape to Cape Sarichef-
335 PM AKDT Mon Apr 19 2021

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 13 ft.
.TUE...E wind 30 kt. Seas 9 ft.
.TUE NIGHT...NE wind 30 kt increasing to 40 kt after midnight. Seas 
9 ft building to 14 ft after midnight. Rain.
.WED...E wind 45 kt. Seas 18 ft.
.WED NIGHT...E wind 40 kt. Seas 16 ft.
.THU...E wind 35 kt. Seas 15 ft.
.FRI...E wind 15 kt. Seas 7 ft.
.SAT...E wind 25 kt. Seas 7 ft.

$$

PKZ160-201215-
Bristol Bay-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...NE wind 30 kt. Seas in ice free waters 4 ft.
.TUE...E wind 25 kt. Seas in ice free waters 3 ft.
.TUE NIGHT...NE wind 25 kt. Seas in ice free waters 3 ft.
.WED AND WED NIGHT...E wind 35 kt. Seas in ice free waters 4 ft.
.THU...E wind 25 kt. Seas in ice free waters 4 ft.
.FRI...E wind 15 kt. Seas in ice free waters 1 foot.
.SAT...E wind 20 kt. Seas in ice free waters 2 ft.

$$

PKZ165-201215-
Port Heiden to Cape Sarichef-
335 PM AKDT Mon Apr 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 35 kt. Seas 9 ft.
.TUE...E wind 30 kt. Seas 9 ft.
.TUE NIGHT...NE wind 30 kt. Seas 8 ft.
.WED AND WED NIGHT...E wind 40 kt. Seas 13 ft.
.THU...E wind 30 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 4 ft.
.SAT...E wind 25 kt. Seas 4 ft.

$$

PKZ170-201215-
Cape Sarichef to Nikolski Bering Side-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...NE wind 30 kt. Seas 11 ft.
.TUE...NE wind 30 kt. Seas 11 ft.
.TUE NIGHT...E wind 25 kt. Seas 9 ft.
.WED...NE wind 35 kt. Seas 13 ft.
.WED NIGHT...NE wind 30 kt. Seas 13 ft.
.THU...E wind 35 kt. Seas 13 ft.
.FRI...SE wind 15 kt. Seas 5 ft.
.SAT...E wind 25 kt. Seas 6 ft.

$$

PKZ171-201215-
Unalaska Bay-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...NE wind 25 kt. Seas 8 ft.
.TUE...NE wind 25 kt. Seas 8 ft subsiding to 4 ft in the afternoon. Rain
showers.
.TUE NIGHT...E wind 25 kt becoming N 15 kt after midnight. Seas 5 
ft.
.WED...NE wind 20 kt. Seas 7 ft.
.WED NIGHT...NE wind 25 kt. Seas 5 ft.
.THU...E wind 30 kt. Seas 5 ft.
.FRI...SE wind 10 kt. Seas 2 ft.
.SAT...E wind 20 kt. Seas 3 ft.

$$

PKZ172-201215-
Cape Sarichef to Nikolski Pacific Side-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...N wind 25 kt. Seas 9 ft.
.TUE...NE wind 25 kt. Seas 9 ft.
.TUE NIGHT...NE wind 30 kt. Seas 9 ft.
.WED...N wind 40 kt. Seas 15 ft.
.WED NIGHT...NE wind 35 kt. Seas 14 ft.
.THU...SE wind 35 kt. Seas 14 ft.
.FRI...SE wind 15 kt. Seas 7 ft.
.SAT...E wind 25 kt. Seas 10 ft.

$$

PKZ173-201215-
Nikolski to Seguam Island Bering Side-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...N wind 30 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.TUE NIGHT...NE wind 25 kt. Seas 10 ft.
.WED AND WED NIGHT...N wind 30 kt. Seas 11 ft.
.THU...N wind 30 kt. Seas 12 ft.
.FRI...SE wind 15 kt. Seas 5 ft.
.SAT...E wind 25 kt. Seas 13 ft.

$$

PKZ174-201215-
Nikolski to Seguam Island Pacific Side-
335 PM AKDT Mon Apr 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 12 ft. Rain.
.TUE...N wind 30 kt. Seas 10 ft.
.TUE NIGHT...NE wind 25 kt. Seas 10 ft.
.WED...N wind 30 kt. Seas 9 ft.
.WED NIGHT...N wind 25 kt. Seas 10 ft.
.THU...W wind 20 kt. Seas 10 ft.
.FRI...SE wind 15 kt. Seas 8 ft.
.SAT...E wind 25 kt. Seas 16 ft.

$$

PKZ175-201215-
Seguam Island to Adak Bering Side-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...N wind 30 kt. Seas 11 ft.
.TUE...N wind 30 kt. Seas 11 ft.
.TUE NIGHT...NE wind 25 kt. Seas 10 ft.
.WED...N wind 25 kt. Seas 8 ft.
.WED NIGHT...N wind 30 kt. Seas 11 ft.
.THU...N wind 25 kt. Seas 11 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.SAT...NE wind 20 kt. Seas 15 ft.

$$

PKZ176-201215-
Seguam Island to Adak Pacific Side-
335 PM AKDT Mon Apr 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 10 ft.
.TUE...N wind 30 kt. Seas 9 ft.
.TUE NIGHT...N wind 25 kt. Seas 8 ft.
.WED...N wind 25 kt. Seas 7 ft.
.WED NIGHT...NW wind 30 kt. Seas 9 ft.
.THU...NW wind 25 kt. Seas 9 ft.
.FRI...SE wind 15 kt. Seas 7 ft.
.SAT...NE wind 20 kt. Seas 17 ft.

$$

PKZ177-201215-
Adak to Kiska-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...N wind 30 kt. Seas 7 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.TUE NIGHT...N wind 25 kt becoming NE 15 kt after midnight. Seas
8 ft.
.WED...NE wind 15 kt. Seas 7 ft.
.WED NIGHT...N wind 20 kt. Seas 6 ft.
.THU...N wind 20 kt. Seas 7 ft.
.FRI...E wind 15 kt. Seas 9 ft.
.SAT...NE wind 20 kt. Seas 15 ft.

$$

PKZ178-201215-
Kiska to Attu-
335 PM AKDT Mon Apr 19 2021

.TONIGHT...NE wind 15 kt. Seas 3 ft.
.TUE...NE wind 15 kt. Seas 5 ft.
.TUE NIGHT...N wind 15 kt. Seas 6 ft.
.WED...Variable wind 10 kt. Seas 7 ft.
.WED NIGHT...NE wind 15 kt. Seas 7 ft.
.THU...N wind 15 kt. Seas 6 ft.
.FRI...N wind 15 kt. Seas 10 ft.
.SAT...N wind 20 kt. Seas 13 ft.

$$

PKZ179-201215-
Pribilof Islands Near Shore Waters-
335 PM AKDT Mon Apr 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 10 ft.
.TUE...NE wind 30 kt. Seas 10 ft.
.TUE NIGHT...NE wind 25 kt. Seas 9 ft.
.WED AND WED NIGHT...NE wind 30 kt. Seas 10 ft.
.THU...NE wind 30 kt. Seas 11 ft.
.FRI...E wind 15 kt. Seas 6 ft.
.SAT...E wind 20 kt. Seas 4 ft.

$$

PKZ180-201215-
Kuskokwim Delta and Etolin Strait-
335 PM AKDT Mon Apr 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 35 kt. Seas in ice free waters 7 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 6 ft.
.TUE NIGHT...NE wind 20 kt increasing to 30 kt after midnight. Seas 
in ice free waters 5 ft.
.WED AND WED NIGHT...E wind 35 kt. Seas in ice free waters 7 ft.
.THU...E wind 25 kt. Seas in ice free waters 7 ft.
.FRI...E wind 15 kt. Seas in ice free waters 3 ft.
.SAT...E wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ181-201215-
North and West of Nunivak Island-
335 PM AKDT Mon Apr 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 40 kt. Seas in ice free waters 6 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 4 ft.
.TUE NIGHT...NE wind 20 kt. Seas in ice free waters 2 ft.
.WED AND WED NIGHT...NE wind 25 kt. Seas in ice free waters 3 ft.
.THU...E wind 20 kt. Seas in ice free waters 3 ft.
.FRI...E wind 15 kt. Seas in ice free waters 3 ft.
.SAT...E wind 20 kt. Seas in ice free waters 3 ft.

$$

PKZ185-201215-
Saint Matthew Island Waters-
335 PM AKDT Mon Apr 19 2021

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

.TONIGHT...NE wind 40 kt E of Saint Matthew Island... NE 30 kt W
of Saint Matthew Island. Seas in ice free waters 8 ft. Heavy freezing
spray near ice edge.
.TUE...NE wind 30 kt. Seas in ice free waters 7 ft. Heavy freezing
spray near ice edge.
.TUE NIGHT...NE wind 25 kt. Seas in ice free waters 6 ft.
.WED AND WED NIGHT...NE wind 25 kt. Seas in ice free waters 6 ft.
.THU...NE wind 20 kt. Seas in ice free waters 6 ft.
.FRI...E wind 15 kt. Seas in ice free waters 5 ft.
.SAT...E wind 20 kt. Seas in ice free waters 5 ft.

$$

493 
FZAK52 PAFC 201157
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
357 AM AKDT Tue Apr 20 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.

PKZ199-210030-
357 AM AKDT Tue Apr 20 2021

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA PENINSULA 
WATERS AND THE ALEUTIAN ISLANDS...
Semisopochnoi Volcano, 140nm northwest of Adak is currently active. 
A 1002 mb low 240 nm south of Dutch Harbor exits into the North 
Pacific by Tue afternoon. The low merges with another 989 mb North 
Pacific low Wed morning and then moves to 160 nm south of Dutch 
Harbor at 992 mb by Thu morning.

$$

PKZ150-210030-
South of the AK Peninsula Sitkinak to Castle Cape-
357 AM AKDT Tue Apr 20 2021

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...E wind 30 kt. Seas 10 ft.
.TONIGHT...E wind 40 kt. Seas 13 ft.
.WED...E wind 45 kt. Seas 17 ft. Rain.
.WED NIGHT...E wind 30 kt. Seas 15 ft.
.THU...E wind 25 kt. Seas 12 ft.
.FRI...NE wind 15 kt. Seas 7 ft.
.SAT...SE wind 20 kt. Seas 5 ft.

$$

PKZ155-210030-
South of the AK Peninsula Castle Cape to Cape Sarichef-
357 AM AKDT Tue Apr 20 2021

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...E wind 25 kt. Seas 9 ft.
.TONIGHT...NE wind 30 kt increasing to 40 kt after midnight. Seas
9 ft building to 15 ft after midnight. Widespread rain showers.
.WED...NE wind 45 kt. Seas 19 ft. Rain.
.WED NIGHT...E wind 40 kt. Seas 18 ft.
.THU...E wind 35 kt. Seas 16 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.SAT...SE wind 25 kt. Seas 7 ft.

$$

PKZ160-210030-
Bristol Bay-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...E wind 25 kt. Seas 5 ft.
.TONIGHT...NE wind 30 kt. Seas 7 ft.
.WED...NE wind 30 kt. Seas 7 ft. Rain.
.WED NIGHT...E wind 35 kt. Seas 8 ft.
.THU...E wind 25 kt. Seas 5 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.SAT...E wind 15 kt. Seas 3 ft.

$$

PKZ165-210030-
Port Heiden to Cape Sarichef-
357 AM AKDT Tue Apr 20 2021

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...E wind 30 kt. Seas 10 ft.
.TONIGHT...NE wind 35 kt. Seas 11 ft.
.WED...NE wind 40 kt. Seas 12 ft. Rain.
.WED NIGHT...E wind 40 kt. Seas 12 ft.
.THU...E wind 30 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 3 ft.
.SAT...SE wind 25 kt. Seas 5 ft.

$$

PKZ170-210030-
Cape Sarichef to Nikolski Bering Side-
357 AM AKDT Tue Apr 20 2021

...GALE WARNING WEDNESDAY...

.TODAY...NE wind 30 kt. Seas 11 ft.
.TONIGHT...E wind 30 kt. Seas 10 ft.
.WED...NE wind 40 kt. Seas 14 ft. Widespread rain showers.
.WED NIGHT...NE wind 35 kt. Seas 13 ft.
.THU...E wind 35 kt. Seas 13 ft.
.FRI...SE wind 25 kt. Seas 6 ft.
.SAT...SE wind 30 kt. Seas 7 ft.

$$

PKZ171-210030-
Unalaska Bay-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NE wind 20 kt becoming E 30 kt in the afternoon. Seas 7
ft. Widespread rain showers.
.TONIGHT...E wind 25 kt. Seas 6 ft. Widespread rain showers.
.WED...NE wind 30 kt. Seas 11 ft. Rain.
.WED NIGHT...NE wind 25 kt. Seas 7 ft.
.THU...E wind 30 kt. Seas 5 ft.
.FRI THROUGH SAT...SE wind 20 kt. Seas 3 ft.

$$

PKZ172-210030-
Cape Sarichef to Nikolski Pacific Side-
357 AM AKDT Tue Apr 20 2021

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...E wind 30 kt. Seas 9 ft.
.TONIGHT...E wind 25 kt becoming NE 35 kt after midnight. Seas
10 ft.
.WED...N wind 40 kt. Seas 17 ft. Rain.
.WED NIGHT...NE wind 35 kt. Seas 15 ft.
.THU...E wind 35 kt. Seas 14 ft.
.FRI THROUGH SAT...SE wind 25 kt. Seas 8 ft.

$$

PKZ173-210030-
Nikolski to Seguam Island Bering Side-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 30 kt. Seas 12 ft.
.TONIGHT...NE wind 25 kt. Seas 11 ft.
.WED...N wind 30 kt. Seas 11 ft. Rain.
.WED NIGHT...N wind 30 kt. Seas 12 ft.
.THU...NE wind 25 kt. Seas 11 ft.
.FRI THROUGH SAT...SE wind 30 kt. Seas 8 ft.

$$

PKZ174-210030-
Nikolski to Seguam Island Pacific Side-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 25 kt. Seas 10 ft.
.TONIGHT...NE wind 25 kt. Seas 9 ft.
.WED...N wind 30 kt. Seas 10 ft. Rain.
.WED NIGHT...N wind 25 kt. Seas 12 ft.
.THU...N wind 20 kt. Seas 10 ft.
.FRI...SE wind 25 kt. Seas 8 ft.
.SAT...SE wind 20 kt. Seas 9 ft.

$$

PKZ175-210030-
Seguam Island to Adak Bering Side-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 25 kt. Seas 11 ft.
.TONIGHT...NE wind 25 kt. Seas 11 ft.
.WED...N wind 25 kt. Seas 10 ft.
.WED NIGHT...N wind 25 kt. Seas 11 ft.
.THU...NE wind 25 kt. Seas 10 ft.
.FRI...E wind 25 kt. Seas 7 ft.
.SAT...S wind 15 kt. Seas 6 ft.

$$

PKZ176-210030-
Seguam Island to Adak Pacific Side-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 30 kt. Seas 9 ft.
.TONIGHT...N wind 25 kt. Seas 8 ft.
.WED...N wind 25 kt. Seas 7 ft.
.WED NIGHT...NW wind 30 kt. Seas 9 ft.
.THU...N wind 25 kt. Seas 9 ft.
.FRI...SE wind 25 kt. Seas 8 ft.
.SAT...SW wind 15 kt. Seas 11 ft.

$$

PKZ177-210030-
Adak to Kiska-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 25 kt. Seas 8 ft.
.TONIGHT...N wind 20 kt. Seas 8 ft.
.WED...NE wind 15 kt. Seas 8 ft.
.WED NIGHT...N wind 20 kt. Seas 7 ft.
.THU...NE wind 20 kt. Seas 7 ft.
.FRI...E wind 25 kt. Seas 10 ft.
.SAT...NW wind 20 kt. Seas 10 ft.

$$

PKZ178-210030-
Kiska to Attu-
357 AM AKDT Tue Apr 20 2021

.TODAY...N wind 20 kt. Seas 5 ft.
.TONIGHT...N wind 15 kt. Seas 7 ft.
.WED...Variable wind 10 kt. Seas 7 ft.
.WED NIGHT...NE wind 15 kt. Seas 7 ft.
.THU...NE wind 20 kt. Seas 7 ft.
.FRI...NE wind 25 kt. Seas 9 ft.
.SAT...N wind 20 kt. Seas 8 ft.

$$

PKZ179-210030-
Pribilof Islands Near Shore Waters-
357 AM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NE wind 30 kt. Seas 10 ft.
.TONIGHT...NE wind 25 kt. Seas 9 ft.
.WED...NE wind 30 kt. Seas 10 ft.
.WED NIGHT...NE wind 30 kt. Seas 11 ft.
.THU...NE wind 30 kt. Seas 11 ft.
.FRI THROUGH SAT...SE wind 25 kt. Seas 7 ft.

$$

PKZ180-210030-
Kuskokwim Delta and Etolin Strait-
357 AM AKDT Tue Apr 20 2021

...GALE WARNING WEDNESDAY...

.TODAY...NE wind 25 kt. Seas in ice free waters 7 ft.
.TONIGHT...NE wind 30 kt. Seas in ice free waters 8 ft.
.WED...NE wind 35 kt. Seas in ice free waters 9 ft.
.WED NIGHT...E wind 35 kt. Seas in ice free waters 9 ft.
.THU...E wind 25 kt. Seas in ice free waters 8 ft.
.FRI...E wind 15 kt. Seas in ice free waters 4 ft.
.SAT...E wind 20 kt. Seas in ice free waters 5 ft.

$$

PKZ181-210030-
North and West of Nunivak Island-
357 AM AKDT Tue Apr 20 2021

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

.TODAY...NE wind 30 kt. Seas in ice free waters 7 ft.
.TONIGHT...NE wind 20 kt. Seas in ice free waters 5 ft.
.WED...NE wind 25 kt. Seas in ice free waters 6 ft.
.WED NIGHT...NE wind 25 kt. Seas in ice free waters 6 ft.
.THU...NE wind 20 kt. Seas in ice free waters 5 ft.
.FRI THROUGH SAT...E wind 20 kt. Seas in ice free waters 5 ft.

$$

PKZ185-210030-
Saint Matthew Island Waters-
357 AM AKDT Tue Apr 20 2021

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

.TODAY...NE wind 30 kt. Seas 8 ft. Heavy freezing spray.
.TONIGHT...NE wind 25 kt. Seas 7 ft. Freezing spray.
.WED...NE wind 20 kt. Seas 5 ft.
.WED NIGHT...NE wind 25 kt. Seas 6 ft.
.THU THROUGH SAT...E wind 20 kt. Seas 6 ft.

$$

142 
FZAK52 PAFC 210002
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
402 PM AKDT Tue Apr 20 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.

PKZ199-211245-
402 PM AKDT Tue Apr 20 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 996 mb North Pacific low moves to 260 nm southeast of Dutch 
Harbor at 985 mb Wed afternoon and then moves to 100 nm southeast 
of Dutch Harbor at 997 mb by Thu afternoon. Its front moves into 
the Bering by Wed and weakens by Thu morning.

$$

PKZ150-211245-
South of the AK Peninsula Sitkinak to Castle Cape-
402 PM AKDT Tue Apr 20 2021

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...E wind increasing to 40 kt. Seas 13 ft. Rain showers.
.WED...E wind 45 kt. Seas 16 ft. Rain.
.WED NIGHT...E wind 35 kt diminishing to 25 kt after midnight. Seas 
16 ft.
.THU...E wind 20 kt. Seas 12 ft.
.THU NIGHT...E wind 15 kt. Seas 8 ft.
.FRI...Variable wind 10 kt. Seas 7 ft.
.SAT...SE wind 20 kt. Seas 5 ft.
.SUN...E wind 30 kt. Seas 10 ft.

$$

PKZ155-211245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
402 PM AKDT Tue Apr 20 2021

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 35 kt increasing to 45 kt after midnight. Seas
10 ft building to 15 ft after midnight. Rain.
.WED...E wind 45 kt diminishing to 35 kt in the afternoon. Seas
18 ft. Rain.
.WED NIGHT...E wind 40 kt. Seas 19 ft.
.THU...E wind 30 kt. Seas 15 ft.
.THU NIGHT...E wind 25 kt. Seas 10 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.SAT...SE wind 25 kt. Seas 7 ft.
.SUN...E wind 30 kt. Seas 14 ft.

$$

PKZ160-211245-
Bristol Bay-
402 PM AKDT Tue Apr 20 2021

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...NE wind increasing to 25 kt. Seas 3 ft.
.WED...NE wind 30 kt. Seas 4 ft.
.WED NIGHT...E wind 35 kt. Seas 4 ft.
.THU...E wind 25 kt. Seas 3 ft.
.THU NIGHT...E wind 20 kt. Seas 2 ft.
.FRI THROUGH SAT...E wind 15 kt. Seas 2 ft.
.SUN...E wind 30 kt. Seas 3 ft.

$$

PKZ165-211245-
Port Heiden to Cape Sarichef-
402 PM AKDT Tue Apr 20 2021

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...NE wind increasing to 30 kt. Seas 8 ft.
.WED...NE wind 35 kt. Seas 11 ft.
.WED NIGHT...E wind 40 kt. Seas 12 ft.
.THU...E wind 30 kt. Seas 9 ft.
.THU NIGHT...E wind 20 kt. Seas 5 ft.
.FRI...E wind 20 kt. Seas 3 ft.
.SAT...SE wind 25 kt. Seas 5 ft.
.SUN...E wind 30 kt. Seas 10 ft.

$$

PKZ170-211245-
Cape Sarichef to Nikolski Bering Side-
402 PM AKDT Tue Apr 20 2021

...GALE WARNING WEDNESDAY...

.TONIGHT...E wind 30 kt. Seas 10 ft.
.WED...NE wind 35 kt. Seas 13 ft.
.WED NIGHT...NE wind 30 kt. Seas 11 ft.
.THU...E wind 25 kt. Seas 10 ft.
.THU NIGHT...E wind 15 kt. Seas 7 ft.
.FRI...SE wind 25 kt. Seas 6 ft.
.SAT...SE wind 30 kt. Seas 7 ft.
.SUN...NE wind 25 kt. Seas 12 ft.

$$

PKZ171-211245-
Unalaska Bay-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...E wind 30 kt becoming NE 15 kt after midnight. Gusts to 
40 kt in the evening. Seas 5 ft. Rain.
.WED...NE wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft. Rain.
.WED NIGHT...NE wind 10 kt in the evening becoming variable less
than 10 kt. Seas 3 ft. Widespread rain showers.
.THU...E wind 20 kt. Seas 3 ft.
.THU NIGHT...E wind 15 kt. Seas 3 ft.
.FRI THROUGH SAT...SE wind 20 kt. Seas 3 ft.
.SUN...E wind 15 kt. Seas 5 ft.

$$

PKZ172-211245-
Cape Sarichef to Nikolski Pacific Side-
402 PM AKDT Tue Apr 20 2021

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...E wind 30 kt becoming NE 40 kt after midnight. Seas
12 ft.
.WED...NE wind 45 kt. Seas 17 ft.
.WED NIGHT...NE wind 30 kt. Seas 14 ft.
.THU...NE wind 30 kt. Seas 12 ft.
.THU NIGHT...N wind 25 kt. Seas 10 ft.
.FRI THROUGH SAT...SE wind 25 kt. Seas 8 ft.
.SUN...E wind 25 kt. Seas 15 ft.

$$

PKZ173-211245-
Nikolski to Seguam Island Bering Side-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 11 ft.
.WED...N wind 30 kt. Seas 11 ft.
.WED NIGHT...N wind 25 kt. Seas 11 ft.
.THU...NW wind 15 kt. Seas 8 ft.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft.
.FRI THROUGH SAT...SE wind 30 kt. Seas 8 ft.
.SUN...N wind 25 kt. Seas 11 ft.

$$

PKZ174-211245-
Nikolski to Seguam Island Pacific Side-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 9 ft.
.WED...N wind 30 kt. Seas 11 ft. Rain.
.WED NIGHT...N wind 25 kt. Seas 11 ft.
.THU...NW wind 20 kt. Seas 10 ft.
.THU NIGHT...SW wind 15 kt. Seas 9 ft.
.FRI...SE wind 25 kt. Seas 8 ft.
.SAT...SE wind 20 kt. Seas 9 ft.
.SUN...NW wind 25 kt. Seas 13 ft.

$$

PKZ175-211245-
Seguam Island to Adak Bering Side-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 11 ft.
.WED...N wind 25 kt. Seas 9 ft.
.WED NIGHT...N wind 25 kt. Seas 10 ft. Rain.
.THU...NW wind 20 kt. Seas 8 ft.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft.
.FRI...SE wind 25 kt. Seas 7 ft.
.SAT...S wind 15 kt. Seas 6 ft.
.SUN...NW wind 30 kt. Seas 11 ft.

$$

PKZ176-211245-
Seguam Island to Adak Pacific Side-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 8 ft.
.WED...N wind 25 kt. Seas 7 ft.
.WED NIGHT...N wind 25 kt. Seas 9 ft.
.THU...NW wind 20 kt. Seas 8 ft.
.THU NIGHT...SW wind 15 kt. Seas 8 ft.
.FRI...E wind 25 kt. Seas 8 ft.
.SAT...SW wind 15 kt. Seas 11 ft.
.SUN...NW wind 30 kt. Seas 12 ft.

$$

PKZ177-211245-
Adak to Kiska-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...N wind 25 kt. Seas 8 ft.
.WED...NE wind 15 kt. Seas 8 ft.
.WED NIGHT...N wind 20 kt. Seas 7 ft.
.THU...N wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI...NE wind 15 kt. Seas 10 ft.
.SAT...NW wind 20 kt. Seas 10 ft.
.SUN...NW wind 30 kt. Seas 12 ft.

$$

PKZ178-211245-
Kiska to Attu-
402 PM AKDT Tue Apr 20 2021

.TONIGHT...N wind 20 kt. Seas 7 ft.
.WED...NE wind 15 kt. Seas 7 ft.
.WED NIGHT...NE wind 15 kt. Seas 7 ft.
.THU AND THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI THROUGH SAT...N wind 20 kt. Seas 9 ft.
.SUN...W wind 25 kt. Seas 10 ft.

$$

PKZ179-211245-
Pribilof Islands Near Shore Waters-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 9 ft.
.WED...NE wind 30 kt. Seas 9 ft. Rain.
.WED NIGHT...NE wind 30 kt. Seas 10 ft. Rain.
.THU...E wind 30 kt. Seas 11 ft.
.THU NIGHT...E wind 15 kt. Seas 7 ft.
.FRI THROUGH SAT...SE wind 25 kt. Seas 7 ft.
.SUN...NE wind 25 kt. Seas 12 ft.

$$

PKZ180-211245-
Kuskokwim Delta and Etolin Strait-
402 PM AKDT Tue Apr 20 2021

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas in ice free waters 5 ft.
.WED...NE wind 30 kt. Seas in ice free waters 6 ft. Rain.
.WED NIGHT...E wind 35 kt. Seas in ice free waters 8 ft.
.THU...E wind 25 kt. Seas in ice free waters 7 ft.
.THU NIGHT...E wind 15 kt. Seas in ice free waters 4 ft.
.FRI...E wind 15 kt. Seas in ice free waters 3 ft.
.SAT...E wind 20 kt. Seas in ice free waters 5 ft.
.SUN...E wind 30 kt. Seas in ice free waters 7 ft.

$$

PKZ181-211245-
North and West of Nunivak Island-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY WEDNESDAY...

.TONIGHT...NE wind 20 kt. Seas in ice free waters 3 ft.
.WED...NE wind 25 kt. Seas in ice free waters 3 ft.
.WED NIGHT...NE wind 20 kt. Seas in ice free waters 3 ft.
.THU...E wind 20 kt. Seas in ice free waters 3 ft.
.THU NIGHT...Variable wind 10 kt. Seas in ice free waters 3 ft.
.FRI THROUGH SUN...NE wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ185-211245-
Saint Matthew Island Waters-
402 PM AKDT Tue Apr 20 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 7 ft. Freezing spray near ice edge.
.WED...NE wind 25 kt. Seas 5 ft. Freezing spray near the ice edge in
the morning.
.WED NIGHT...NE wind 25 kt. Seas 5 ft.
.THU...NE wind 20 kt. Seas 5 ft.
.THU NIGHT...E wind 15 kt. Seas 5 ft.
.FRI THROUGH SAT...E wind 20 kt. Seas 6 ft.
.SUN...NE wind 20 kt. Seas 7 ft.

$$

910 
FZAK52 PAFC 211154
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
354 AM AKDT Wed Apr 21 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.

PKZ199-220115-
354 AM AKDT Wed Apr 21 2021

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

A 986 mb low 300 nm south of Cold Bay moves to 130 nm south of
Dutch Harbor at 992 mb Thu morning and then moves to 200 nm south
of Sand Point at 1004 mb Fri morning. Its front moves into the 
Bering Wed and weakens by Thu morning.

$$

PKZ150-220115-
South of the AK Peninsula Sitkinak to Castle Cape-
354 AM AKDT Wed Apr 21 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 45 kt. Seas 16 ft. Rain.
.TONIGHT...E wind 35 kt diminishing to 25 kt after midnight. Seas
16 ft.
.THU...E wind 20 kt. Seas 12 ft.
.THU NIGHT...E wind 20 kt. Seas 8 ft.
.FRI...E wind 15 kt. Seas 7 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SUN...E wind 25 kt. Seas 9 ft.

$$

PKZ155-220115-
South of the AK Peninsula Castle Cape to Cape Sarichef-
354 AM AKDT Wed Apr 21 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 45 kt diminishing to 35 kt in the afternoon. Seas
18 ft.
.TONIGHT...E wind 40 kt. Seas 19 ft. Rain.
.THU...E wind 30 kt. Seas 15 ft.
.THU NIGHT...E wind 20 kt. Seas 9 ft.
.FRI...E wind 25 kt. Seas 7 ft.
.SAT THROUGH SUN...E wind 30 kt. Seas 11 ft.

$$

PKZ160-220115-
Bristol Bay-
354 AM AKDT Wed Apr 21 2021

...GALE WARNING TONIGHT...

.TODAY...NE wind 30 kt. Seas 9 ft.
.TONIGHT...E wind 35 kt. Seas 12 ft.
.THU...E wind 25 kt. Seas 7 ft.
.THU NIGHT...E wind 15 kt. Seas 4 foot.
.FRI...E wind 15 kt. Seas 4 foot.
.SAT THROUGH SUN...E wind 20 kt. Seas 5 ft.

$$

PKZ165-220115-
Port Heiden to Cape Sarichef-
354 AM AKDT Wed Apr 21 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...NE wind 35 kt. Seas 12 ft. Rain.
.TONIGHT...E wind 40 kt. Seas 12 ft.
.THU...E wind 30 kt. Seas 9 ft.
.THU NIGHT...E wind 20 kt. Seas 4 ft.
.FRI...E wind 25 kt. Seas 4 ft.
.SAT...E wind 30 kt. Seas 6 ft.
.SUN...E wind 25 kt. Seas 5 ft.

$$

PKZ170-220115-
Cape Sarichef to Nikolski Bering Side-
354 AM AKDT Wed Apr 21 2021

...GALE WARNING TODAY...

.TODAY...NE wind 35 kt. Seas 13 ft. Rain.
.TONIGHT...NE wind 30 kt. Seas 11 ft.
.THU...E wind 25 kt. Seas 10 ft.
.THU NIGHT...E wind 20 kt. Seas 7 ft.
.FRI...SE wind 30 kt. Seas 8 ft.
.SAT...SE wind 35 kt. Seas 9 ft.
.SUN...NE wind 20 kt. Seas 5 ft.

$$

PKZ171-220115-
Unalaska Bay-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft. Rain.
.TONIGHT...NE wind 10 kt in the evening becoming variable less
than 10 kt. Seas 3 ft. Rain.
.THU...E wind 20 kt. Seas 3 ft. Rain.
.THU NIGHT...E wind 15 kt. Seas 2 ft.
.FRI...SE wind 30 kt. Seas 4 ft.
.SAT...SE wind 25 kt. Seas 4 ft.
.SUN...NE wind 15 kt. Seas 2 ft.

$$

PKZ172-220115-
Cape Sarichef to Nikolski Pacific Side-
354 AM AKDT Wed Apr 21 2021

...GALE WARNING TODAY...

.TODAY...NE wind 45 kt diminishing to 35 kt in the afternoon. Seas
18 ft. Rain.
.TONIGHT...NE wind 30 kt. Seas 14 ft. Rain.
.THU...NE wind 30 kt. Seas 12 ft.
.THU NIGHT...E wind 20 kt. Seas 9 ft.
.FRI THROUGH SAT...SE wind 30 kt. Seas 9 ft.
.SUN...NE wind 20 kt. Seas 9 ft.

$$

PKZ173-220115-
Nikolski to Seguam Island Bering Side-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...N wind 30 kt. Seas 11 ft. Rain.
.TONIGHT...N wind 25 kt. Seas 11 ft.
.THU...NW wind 15 kt. Seas 8 ft.
.THU NIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...SE wind 25 kt. Seas 7 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SUN...NW wind 20 kt. Seas 6 ft.

$$

PKZ174-220115-
Nikolski to Seguam Island Pacific Side-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...N wind 30 kt. Seas 12 ft. Rain.
.TONIGHT...N wind 25 kt. Seas 11 ft.
.THU...NW wind 20 kt. Seas 10 ft.
.THU NIGHT...W wind 15 kt. Seas 8 ft.
.FRI...SE wind 25 kt. Seas 8 ft.
.SAT...SW wind 30 kt. Seas 10 ft.
.SUN...NW wind 25 kt. Seas 9 ft.

$$

PKZ175-220115-
Seguam Island to Adak Bering Side-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 25 kt. Seas 9 ft.
.TONIGHT...N wind 25 kt. Seas 10 ft.
.THU...NW wind 20 kt. Seas 8 ft.
.THU NIGHT...Variable wind 10 kt. Seas 6 ft.
.FRI...NE wind 15 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 8 ft.

$$

PKZ176-220115-
Seguam Island to Adak Pacific Side-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...N wind 25 kt. Seas 8 ft.
.TONIGHT...N wind 25 kt. Seas 9 ft.
.THU...NW wind 20 kt. Seas 8 ft.
.THU NIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...NW wind 25 kt. Seas 9 ft.

$$

PKZ177-220115-
Adak to Kiska-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 15 kt. Seas 8 ft.
.TONIGHT...N wind 20 kt. Seas 7 ft.
.THU...N wind 20 kt. Seas 7 ft.
.THU NIGHT...Variable wind 10 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 6 ft.
.SUN...W wind 30 kt. Seas 9 ft.

$$

PKZ178-220115-
Kiska to Attu-
354 AM AKDT Wed Apr 21 2021

.TODAY...NE wind 15 kt. Seas 7 ft.
.TONIGHT...NE wind 15 kt. Seas 7 ft.
.THU...NE wind 15 kt. Seas 6 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 8 ft.

$$

PKZ179-220115-
Pribilof Islands Near Shore Waters-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 30 kt. Seas 9 ft.
.TONIGHT...NE wind 30 kt. Seas 10 ft. Rain.
.THU...E wind 30 kt diminishing to 20 kt in the afternoon. Seas
11 ft.
.THU NIGHT...E wind 15 kt. Seas 7 ft.
.FRI...E wind 30 kt. Seas 6 ft.
.SAT...E wind 25 kt. Seas 7 ft.
.SUN...E wind 20 kt. Seas 6 ft.

$$

PKZ180-220115-
Kuskokwim Delta and Etolin Strait-
354 AM AKDT Wed Apr 21 2021

...GALE WARNING TONIGHT...

.TODAY...NE wind 30 kt. Seas in ice free waters 6 ft.
.TONIGHT...E wind 35 kt. Seas in ice free waters 8 ft.
.THU...E wind 25 kt. Seas in ice free waters 7 ft.
.THU NIGHT...E wind 15 kt. Seas in ice free waters 4 ft.
.FRI THROUGH SUN...E wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ181-220115-
North and West of Nunivak Island-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas in ice free waters 7 ft.
.TONIGHT...NE wind 20 kt. Seas in ice free waters 5 ft.
.THU...E wind 20 kt. Seas in ice free waters 5 ft.
.THU NIGHT...E wind 15 kt. Seas in ice free waters 4 ft.
.FRI THROUGH SUN...E wind 20 kt. Seas in ice free waters 5 ft.

$$

PKZ185-220115-
Saint Matthew Island Waters-
354 AM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NE wind 25 kt. Seas 5 ft. Freezing spray near ice edge in
the morning.
.TONIGHT...NE wind 25 kt. Seas 5 ft.
.THU...NE wind 20 kt. Seas 6 ft.
.THU NIGHT...E wind 15 kt. Seas 6 ft.
.FRI THROUGH SUN...NE wind 25 kt. Seas 6 ft.

$$

188 
FZAK52 PAFC 212356
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
356 PM AKDT Wed Apr 21 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.

PKZ199-221300-
356 PM AKDT Wed Apr 21 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 985 mb low 270 nm south of Dutch Harbor moves to 310 nm south 
of Sand Point at 1010 for Fri afternoon. Its front moves into the 
Bering through Fri afternoon. A 999 mb North Pacific low merges 
with a 995 mb North Pacific low and continues to 255 nm south of 
Adak at 989 mb by Fri afternoon. Its front remains in the North 
Pacific.

$$

PKZ150-221300-
South of the AK Peninsula Sitkinak to Castle Cape-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...E wind 30 kt. Seas 15 ft.
.THU...E wind 20 kt. Seas 11 ft.
.THU NIGHT...E wind 20 kt. Seas 9 ft.
.FRI...NE wind 15 kt. Seas 7 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 6 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SUN THROUGH MON...E wind 25 kt. Seas 9 ft.

$$

PKZ155-221300-
South of the AK Peninsula Castle Cape to Cape Sarichef-
356 PM AKDT Wed Apr 21 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 35 kt. Seas 18 ft. Rain showers.
.THU...E wind 30 kt. Seas 14 ft.
.THU NIGHT...E wind 25 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.FRI NIGHT...E wind 25 kt. Seas 6 ft.
.SAT THROUGH SUN...E wind 30 kt. Seas 11 ft.
.MON...NE wind 25 kt. Seas 8 ft.

$$

PKZ160-221300-
Bristol Bay-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...E wind 30 kt. Seas 6 ft.
.THU...E wind 20 kt. Seas 4 ft.
.THU NIGHT...E wind 15 kt. Seas 2 ft.
.FRI AND FRI NIGHT...NE wind 10 kt. Seas 1 foot.
.SAT THROUGH MON...NE wind 20 kt. Seas 2 ft.

$$

PKZ165-221300-
Port Heiden to Cape Sarichef-
356 PM AKDT Wed Apr 21 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 35 kt. Seas 12 ft.
.THU...E wind 30 kt diminishing to 20 kt in the afternoon. Seas
8 ft subsiding to 5 ft in the afternoon.
.THU NIGHT...E wind 20 kt. Seas 4 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.FRI NIGHT...E wind 25 kt. Seas 3 ft.
.SAT...E wind 30 kt. Seas 5 ft.
.SUN...E wind 25 kt. Seas 5 ft.
.MON...NE wind 20 kt. Seas 5 ft.

$$

PKZ170-221300-
Cape Sarichef to Nikolski Bering Side-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 30 kt. Seas 12 ft.
.THU...E wind 25 kt. Seas 10 ft.
.THU NIGHT...E wind 20 kt. Seas 7 ft.
.FRI...E wind 20 kt. Seas 5 ft.
.FRI NIGHT...E wind 30 kt. Seas 7 ft.
.SAT...E wind 30 kt. Seas 8 ft.
.SUN...NE wind 20 kt. Seas 5 ft.
.MON...N wind 20 kt. Seas 4 ft.

$$

PKZ171-221300-
Unalaska Bay-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...NE wind 15 kt. Gusts to 30 kt diminishing after midnight.
Seas 5 ft subsiding to 3 ft after midnight. Rain showers.
.THU...E wind 25 kt. Seas 3 ft. Rain showers.
.THU NIGHT...E wind 15 kt diminishing to 10 kt after midnight.
Seas 2 ft.
.FRI...E wind 15 kt. Seas 2 ft.
.FRI NIGHT...SE wind 25 kt. Seas 4 ft.
.SAT...SE wind 25 kt. Seas 4 ft.
.SUN...NE wind 15 kt. Seas 2 ft.
.MON...N wind 10 kt. Seas 3 ft.

$$

PKZ172-221300-
Cape Sarichef to Nikolski Pacific Side-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...NE wind 30 kt...becoming SE after midnight E of Dutch
Harbor. Seas 16 ft. Rain showers.
.THU...E wind 25 kt. Seas 14 ft.
.THU NIGHT...NE wind 20 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 6 ft.
.FRI NIGHT...E wind 30 kt. Seas 8 ft.
.SAT...SE wind 30 kt. Seas 10 ft.
.SUN...NE wind 20 kt. Seas 9 ft.
.MON...N wind 20 kt. Seas 8 ft.

$$

PKZ173-221300-
Nikolski to Seguam Island Bering Side-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 11 ft. Rain.
.THU...N wind 20 kt. Seas 9 ft.
.THU NIGHT...E wind 15 kt. Seas 8 ft.
.FRI...SE wind 20 kt. Seas 5 ft.
.FRI NIGHT...E wind 30 kt. Seas 8 ft.
.SAT...NE wind 20 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 20 kt. Seas 6 ft.

$$

PKZ174-221300-
Nikolski to Seguam Island Pacific Side-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 13 ft. Rain.
.THU...NW wind 20 kt. Seas 11 ft.
.THU NIGHT...Variable wind 10 kt. Seas 9 ft.
.FRI...SE wind 25 kt. Seas 7 ft.
.FRI NIGHT...E wind 30 kt. Seas 10 ft.
.SAT...W wind 20 kt. Seas 11 ft.
.SUN THROUGH MON...NW wind 25 kt. Seas 9 ft.

$$

PKZ175-221300-
Seguam Island to Adak Bering Side-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...N wind 25 kt. Seas 10 ft.
.THU...N wind 20 kt. Seas 9 ft.
.THU NIGHT...Variable wind 10 kt. Seas 7 ft.
.FRI...E wind 20 kt. Seas 5 ft.
.FRI NIGHT...NE wind 25 kt. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 25 kt. Seas 8 ft.

$$

PKZ176-221300-
Seguam Island to Adak Pacific Side-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 9 ft.
.THU...NW wind 20 kt. Seas 9 ft.
.THU NIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI AND FRI NIGHT...NE wind 25 kt. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 9 ft.
.SUN THROUGH MON...W wind 25 kt. Seas 9 ft.

$$

PKZ177-221300-
Adak to Kiska-
356 PM AKDT Wed Apr 21 2021

.TONIGHT...N wind 20 kt. Seas 7 ft.
.THU...N wind 15 kt. Seas 7 ft.
.THU NIGHT...Variable wind 10 kt. Seas 6 ft.
.FRI AND FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN THROUGH MON...W wind 30 kt. Seas 9 ft.

$$

PKZ178-221300-
Kiska to Attu-
356 PM AKDT Wed Apr 21 2021

.TONIGHT...NE wind 15 kt. Seas 7 ft.
.THU...NE wind 15 kt. Seas 6 ft.
.THU NIGHT...N wind 15 kt. Seas 6 ft.
.FRI AND FRI NIGHT...N wind 15 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON...SW wind 25 kt. Seas 7 ft.

$$

PKZ179-221300-
Pribilof Islands Near Shore Waters-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 30 kt. Seas 10 ft. Rain and snow.
.THU...NE wind 25 kt decreasing to 15 kt in the afternoon. Seas 10 
ft subsiding to 7 ft in the afternoon.
.THU NIGHT...E wind 15 kt. Seas 6 ft.
.FRI...E wind 15 kt. Seas 5 ft.
.FRI NIGHT...E wind 25 kt. Seas 5 ft.
.SAT...E wind 25 kt. Seas 7 ft.
.SUN...E wind 20 kt. Seas 6 ft.
.MON...N wind 15 kt. Seas 5 ft.

$$

PKZ180-221300-
Kuskokwim Delta and Etolin Strait-
356 PM AKDT Wed Apr 21 2021

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 35 kt decreasing to 25 kt after midnight. Seas in
ice free waters 9 ft.
.THU...E wind 25 kt decreasing to 15 ft by afternoon. Seas in ice 
free waters 6 ft.
.THU NIGHT...E wind 15 kt. Seas in ice free waters 4 ft.
.FRI AND FRI NIGHT...E wind 15 kt. Seas in ice free waters 2 ft.
.SAT THROUGH SUN...E wind 20 kt. Seas in ice free waters 5 ft.
.MON...NE wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ181-221300-
North and West of Nunivak Island-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt. Seas in ice free waters 5 ft.
.THU...E wind 20 kt. Seas in ice free waters 5 ft.
.THU NIGHT...NE wind 15 kt. Seas in ice free waters 4 ft.
.FRI AND FRI NIGHT...E wind 15 kt. Seas in ice free waters 3 ft.
.SAT THROUGH SUN...E wind 20 kt. Seas in ice free waters 4 ft.
.MON...NE wind 15 kt. Seas in ice free waters 4 ft.

$$

PKZ185-221300-
Saint Matthew Island Waters-
356 PM AKDT Wed Apr 21 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt. Seas 6 ft. Freezing spray along the ice
edge after midnight.
.THU...NE wind 15 kt. Seas 6 ft. Freezing spray along the ice edge in
the morning.
.THU NIGHT...E wind 15 kt. Seas 6 ft.
.FRI AND FRI NIGHT...E wind 15 kt. Seas 4 ft.
.SAT THROUGH SUN...NE wind 25 kt. Seas 6 ft.
.MON...N wind 20 kt. Seas 5 ft.

$$

759 
FZAK52 PAFC 220853 AAA
CWFALU

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
1253 AM AKDT Thu Apr 22 2021

Updated the Synopsis

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.

PKZ199-221445-
1253 AM AKDT Thu Apr 22 2021

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

SEMISOPOCHNOI VOLCANO, 140 NM NORTHWEST OF ADAK IS CURRENTLY 
ACTIVE.

A 985 mb low 270 nm south of Dutch Harbor moves to 310 nm south 
of Sand Point at 1010 for Fri afternoon. Its front moves into the 
Bering through Fri afternoon. A 999 mb North Pacific low merges 
with a 995 mb North Pacific low and continues to 255 nm south of 
Adak at 989 mb by Fri afternoon. Its front remains in the North 
Pacific.

$$

PKZ150-221445-
South of the AK Peninsula Sitkinak to Castle Cape-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...E wind 30 kt. Seas 15 ft. 
.THU...E wind 20 kt. Seas 11 ft. 
.THU NIGHT...E wind 20 kt. Seas 9 ft. 
.FRI...NE wind 15 kt. Seas 7 ft. 
.FRI NIGHT...Variable wind 10 kt. Seas 6 ft. 
.SAT...SE wind 20 kt. Seas 6 ft. 
.SUN THROUGH MON...E wind 25 kt. Seas 9 ft.

$$

PKZ155-221445-
South of the AK Peninsula Castle Cape to Cape Sarichef-
1253 AM AKDT Thu Apr 22 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 35 kt. Seas 18 ft. Rain showers. 
.THU...E wind 30 kt. Seas 14 ft. 
.THU NIGHT...E wind 25 kt. Seas 9 ft. 
.FRI...E wind 20 kt. Seas 7 ft. 
.FRI NIGHT...E wind 25 kt. Seas 6 ft. 
.SAT THROUGH SUN...E wind 30 kt. Seas 11 ft. 
.MON...NE wind 25 kt. Seas 8 ft.

$$

PKZ160-221445-
Bristol Bay-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...E wind 30 kt. Seas 6 ft. 
.THU...E wind 20 kt. Seas 4 ft. 
.THU NIGHT...E wind 15 kt. Seas 2 ft. 
.FRI AND FRI NIGHT...NE wind 10 kt. Seas 1 foot. 
.SAT THROUGH MON...NE wind 20 kt. Seas 2 ft.

$$

PKZ165-221445-
Port Heiden to Cape Sarichef-
1253 AM AKDT Thu Apr 22 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 35 kt. Seas 12 ft. 
.THU...E wind 30 kt diminishing to 20 kt in the afternoon. Seas
8 ft subsiding to 5 ft in the afternoon. 
.THU NIGHT...E wind 20 kt. Seas 4 ft. 
.FRI...E wind 15 kt. Seas 3 ft. 
.FRI NIGHT...E wind 25 kt. Seas 3 ft. 
.SAT...E wind 30 kt. Seas 5 ft. 
.SUN...E wind 25 kt. Seas 5 ft. 
.MON...NE wind 20 kt. Seas 5 ft.

$$

PKZ170-221445-
Cape Sarichef to Nikolski Bering Side-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 30 kt. Seas 12 ft. 
.THU...E wind 25 kt. Seas 10 ft. 
.THU NIGHT...E wind 20 kt. Seas 7 ft. 
.FRI...E wind 20 kt. Seas 5 ft. 
.FRI NIGHT...E wind 30 kt. Seas 7 ft. 
.SAT...E wind 30 kt. Seas 8 ft. 
.SUN...NE wind 20 kt. Seas 5 ft. 
.MON...N wind 20 kt. Seas 4 ft.

$$

PKZ171-221445-
Unalaska Bay-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THURSDAY...

.TONIGHT...NE wind 15 kt. Gusts to 30 kt diminishing after
midnight. Seas 5 ft subsiding to 3 ft after midnight. Rain
showers. 
.THU...E wind 25 kt. Seas 3 ft. Rain showers. 
.THU NIGHT...E wind 15 kt diminishing to 10 kt after midnight.
Seas 2 ft. 
.FRI...E wind 15 kt. Seas 2 ft. 
.FRI NIGHT...SE wind 25 kt. Seas 4 ft. 
.SAT...SE wind 25 kt. Seas 4 ft. 
.SUN...NE wind 15 kt. Seas 2 ft. 
.MON...N wind 10 kt. Seas 3 ft.

$$

PKZ172-221445-
Cape Sarichef to Nikolski Pacific Side-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...NE wind 30 kt...becoming SE after midnight E of Dutch
Harbor. Seas 16 ft. Rain showers. 
.THU...E wind 25 kt. Seas 14 ft. 
.THU NIGHT...NE wind 20 kt. Seas 9 ft. 
.FRI...E wind 20 kt. Seas 6 ft. 
.FRI NIGHT...E wind 30 kt. Seas 8 ft. 
.SAT...SE wind 30 kt. Seas 10 ft. 
.SUN...NE wind 20 kt. Seas 9 ft. 
.MON...N wind 20 kt. Seas 8 ft.

$$

PKZ173-221445-
Nikolski to Seguam Island Bering Side-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 11 ft. Rain. 
.THU...N wind 20 kt. Seas 9 ft. 
.THU NIGHT...E wind 15 kt. Seas 8 ft. 
.FRI...SE wind 20 kt. Seas 5 ft. 
.FRI NIGHT...E wind 30 kt. Seas 8 ft. 
.SAT...NE wind 20 kt. Seas 8 ft. 
.SUN THROUGH MON...NW wind 20 kt. Seas 6 ft.

$$

PKZ174-221445-
Nikolski to Seguam Island Pacific Side-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 13 ft. Rain. 
.THU...NW wind 20 kt. Seas 11 ft. 
.THU NIGHT...Variable wind 10 kt. Seas 9 ft. 
.FRI...SE wind 25 kt. Seas 7 ft. 
.FRI NIGHT...E wind 30 kt. Seas 10 ft. 
.SAT...W wind 20 kt. Seas 11 ft. 
.SUN THROUGH MON...NW wind 25 kt. Seas 9 ft.

$$

PKZ175-221445-
Seguam Island to Adak Bering Side-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...N wind 25 kt. Seas 10 ft. 
.THU...N wind 20 kt. Seas 9 ft. 
.THU NIGHT...Variable wind 10 kt. Seas 7 ft. 
.FRI...E wind 20 kt. Seas 5 ft. 
.FRI NIGHT...NE wind 25 kt. Seas 8 ft. 
.SAT...NW wind 20 kt. Seas 8 ft. 
.SUN THROUGH MON...NW wind 25 kt. Seas 8 ft.

$$

PKZ176-221445-
Seguam Island to Adak Pacific Side-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 9 ft. 
.THU...NW wind 20 kt. Seas 9 ft. 
.THU NIGHT...Variable wind 10 kt. Seas 8 ft. 
.FRI AND FRI NIGHT...NE wind 25 kt. Seas 8 ft. 
.SAT...NW wind 20 kt. Seas 9 ft. 
.SUN THROUGH MON...W wind 25 kt. Seas 9 ft.

$$

PKZ177-221445-
Adak to Kiska-
1253 AM AKDT Thu Apr 22 2021

.TONIGHT...N wind 20 kt. Seas 7 ft. 
.THU...N wind 15 kt. Seas 7 ft. 
.THU NIGHT...Variable wind 10 kt. Seas 6 ft. 
.FRI AND FRI NIGHT...N wind 20 kt. Seas 6 ft. 
.SAT...NW wind 20 kt. Seas 6 ft. 
.SUN THROUGH MON...W wind 30 kt. Seas 9 ft.

$$

PKZ178-221445-
Kiska to Attu-
1253 AM AKDT Thu Apr 22 2021

.TONIGHT...NE wind 15 kt. Seas 7 ft. 
.THU...NE wind 15 kt. Seas 6 ft. 
.THU NIGHT...N wind 15 kt. Seas 6 ft. 
.FRI AND FRI NIGHT...N wind 15 kt. Seas 6 ft. 
.SAT...NW wind 20 kt. Seas 6 ft. 
.SUN...W wind 25 kt. Seas 8 ft. 
.MON...SW wind 25 kt. Seas 7 ft.

$$

PKZ179-221445-
Pribilof Islands Near Shore Waters-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 30 kt. Seas 10 ft. Rain and snow. 
.THU...NE wind 25 kt decreasing to 15 kt in the afternoon. Seas
10  ft subsiding to 7 ft in the afternoon. 
.THU NIGHT...E wind 15 kt. Seas 6 ft. 
.FRI...E wind 15 kt. Seas 5 ft. 
.FRI NIGHT...E wind 25 kt. Seas 5 ft. 
.SAT...E wind 25 kt. Seas 7 ft. 
.SUN...E wind 20 kt. Seas 6 ft. 
.MON...N wind 15 kt. Seas 5 ft.

$$

PKZ180-221445-
Kuskokwim Delta and Etolin Strait-
1253 AM AKDT Thu Apr 22 2021

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 35 kt decreasing to 25 kt after midnight. Seas
in ice free waters 9 ft. 
.THU...E wind 25 kt decreasing to 15 ft by afternoon. Seas in ice
 free waters 6 ft. 
.THU NIGHT...E wind 15 kt. Seas in ice free waters 4 ft. 
.FRI AND FRI NIGHT...E wind 15 kt. Seas in ice free waters 2 ft. 
.SAT THROUGH SUN...E wind 20 kt. Seas in ice free waters 5 ft. 
.MON...NE wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ181-221445-
North and West of Nunivak Island-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt. Seas in ice free waters 5 ft. 
.THU...E wind 20 kt. Seas in ice free waters 5 ft. 
.THU NIGHT...NE wind 15 kt. Seas in ice free waters 4 ft. 
.FRI AND FRI NIGHT...E wind 15 kt. Seas in ice free waters 3 ft. 
.SAT THROUGH SUN...E wind 20 kt. Seas in ice free waters 4 ft. 
.MON...NE wind 15 kt. Seas in ice free waters 4 ft.

$$

PKZ185-221445-
Saint Matthew Island Waters-
1253 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt. Seas 6 ft. Freezing spray along the ice
edge after midnight. 
.THU...NE wind 15 kt. Seas 6 ft. Freezing spray along the ice
edge in the morning. 
.THU NIGHT...E wind 15 kt. Seas 6 ft. 
.FRI AND FRI NIGHT...E wind 15 kt. Seas 4 ft. 
.SAT THROUGH SUN...NE wind 25 kt. Seas 6 ft. 
.MON...N wind 20 kt. Seas 5 ft.

$$

937 
FZAK52 PAFC 221114
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
314 AM AKDT Thu Apr 22 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.

PKZ199-230000-
314 AM AKDT Thu Apr 22 2021

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

SEMISOPOCHNOI VOLCANO, 140 NM NORTHWEST OF ADAK IS CURRENTLY ACTIVE.

A 995 mb low 130 nm south of Dutch Harbor dissipates by Thu night. 
Its front moves across the Bering through Fri morning. A 989 mb low 
moves to 321 nm southwest of Adak Fri morning and then to 138 nm 
southwest of Adak at 987 mb on Fri night. 

$$

PKZ150-230000-
South of the AK Peninsula Sitkinak to Castle Cape-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 20 kt. Seas 10 ft.
.TONIGHT...E wind 15 kt. Seas 8 ft.
.FRI...E wind 15 kt. Seas 7 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...E wind 30 kt. Seas 11 ft.

$$

PKZ155-230000-
South of the AK Peninsula Castle Cape to Cape Sarichef-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 30 kt except E 20 kt from the Shumagin Islands E.
Seas 14 ft.
.TONIGHT...E wind 20 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.FRI NIGHT...E wind 25 kt. Seas 6 ft.
.SAT THROUGH MON...E wind 30 kt. Seas 10 ft.

$$

PKZ160-230000-
Bristol Bay-
314 AM AKDT Thu Apr 22 2021

.TODAY...E wind 20 kt. Seas 5 ft.
.TONIGHT...E wind 15 kt. Seas 4 ft.
.FRI...E wind 10 kt. Seas 2 foot.
.FRI NIGHT...NE wind 10 kt. Seas 2 foot.
.SAT THROUGH MON...NE wind 25 kt. Seas 5 ft.

$$

PKZ165-230000-
Port Heiden to Cape Sarichef-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas 8 ft.
.TONIGHT...E wind 15 kt. Seas 4 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.FRI NIGHT...E wind 25 kt. Seas 4 ft.
.SAT THROUGH MON...NE wind 30 kt. Seas 7 ft.

$$

PKZ170-230000-
Cape Sarichef to Nikolski Bering Side-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 30 kt. Seas 12 ft.
.TONIGHT...NE wind 15 kt. Seas 7 ft.
.FRI...E wind 20 kt. Seas 4 ft.
.FRI NIGHT...E wind 35 kt. Seas 8 ft.
.SAT...SE wind 40 kt. Seas 10 ft.
.SUN...SE wind 25 kt. Seas 7 ft.
.MON...N wind 25 kt. Seas 6 ft.

$$

PKZ171-230000-
Unalaska Bay-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 30 kt. Seas 5 ft. Widespread rain showers.
.TONIGHT...E wind 15 kt diminishing to 10 kt after midnight. Seas
2 ft.
.FRI...E wind 10 kt increasing to 20 kt in the afternoon. Seas 3 ft.
.FRI NIGHT...SE wind 30 kt. Seas 5 ft.
.SAT...SE wind 35 kt. Seas 5 ft.
.SUN...SE wind 15 kt. Seas 2 ft.
.MON...NE wind 15 kt. Seas 3 ft.

$$

PKZ172-230000-
Cape Sarichef to Nikolski Pacific Side-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 30 kt. Seas 15 ft.
.TONIGHT...NE wind 25 kt. Seas 10 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.FRI NIGHT...E wind 35 kt. Seas 9 ft.
.SAT...S wind 35 kt. Seas 12 ft.
.SUN...S wind 20 kt. Seas 11 ft.
.MON...N wind 20 kt. Seas 8 ft.

$$

PKZ173-230000-
Nikolski to Seguam Island Bering Side-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 20 kt. Seas 10 ft.
.TONIGHT...NE wind 15 kt. Seas 8 ft.
.FRI...E wind 20 kt. Seas 5 ft.
.FRI NIGHT...E wind 35 kt. Seas 9 ft.
.SAT...S wind 25 kt. Seas 9 ft.
.SUN THROUGH MON...NW wind 25 kt. Seas 9 ft.

$$

PKZ174-230000-
Nikolski to Seguam Island Pacific Side-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...NW wind 20 kt. Seas 11 ft.
.TONIGHT...N wind 15 kt. Seas 9 ft.
.FRI...E wind 15 kt increasing to 25 kt in the afternoon. Seas 6 ft. 
.FRI NIGHT...SE wind 35 kt. Seas 11 ft.
.SAT...SW wind 25 kt. Seas 12 ft.
.SUN...W wind 25 kt. Seas 9 ft.
.MON...NW wind 30 kt. Seas 9 ft.

$$

PKZ175-230000-
Seguam Island to Adak Bering Side-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 20 kt. Seas 9 ft.
.TONIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...E wind 20 kt. Seas 6 ft.
.FRI NIGHT...NE wind 30 kt. Seas 8 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 12 ft.

$$

PKZ176-230000-
Seguam Island to Adak Pacific Side-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...NW wind 20 kt. Seas 9 ft.
.TONIGHT...NW wind 15 kt in the evening becoming variable 10 kt.
Seas 8 ft.
.FRI...E wind 15 kt increasing to 25 kt in the afternoon. Seas 7 ft.
Widespread rain showers.
.FRI NIGHT...NE wind 30 kt. Seas 9 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 10 ft.

$$

PKZ177-230000-
Adak to Kiska-
314 AM AKDT Thu Apr 22 2021

.TODAY...N wind 15 kt. Seas 7 ft.
.TONIGHT...N wind 15 kt. Seas 6 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.FRI NIGHT...N wind 20 kt. Seas 6 ft.
.SAT...NW wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 11 ft.

$$

PKZ178-230000-
Kiska to Attu-
314 AM AKDT Thu Apr 22 2021

.TODAY...NE wind 15 kt. Seas 6 ft.
.TONIGHT...N wind 20 kt. Seas 7 ft.
.FRI...N wind 15 kt. Seas 6 ft.
.FRI NIGHT...N wind 15 kt. Seas 6 ft.
.SAT...N wind 20 kt. Seas 5 ft.
.SUN...NW wind 25 kt. Seas 7 ft.
.MON...NE wind 30 kt. Seas 8 ft.

$$

PKZ179-230000-
Pribilof Islands Near Shore Waters-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 9 ft.
.TONIGHT...E wind 15 kt. Seas 6 ft.
.FRI...E wind 15 kt. Seas 4 ft.
.FRI NIGHT...E wind 25 kt. Seas 5 ft.
.SAT...E wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...N wind 25 kt. Seas 8 ft.

$$

PKZ180-230000-
Kuskokwim Delta and Etolin Strait-
314 AM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 25 kt. Seas in ice free waters 6 ft.
.TONIGHT...NE wind 15 kt. Seas in ice free waters 4 ft.
.FRI...E wind 15 kt becoming SE in the afternoon. Seas in ice free
waters 2 ft.
.FRI NIGHT...E wind 15 kt. Seas in ice free waters 2 ft.
.SAT...E wind 30 kt. Seas in ice free waters 6 ft.
.SUN THROUGH MON...NE wind 25 kt. Seas in ice free waters 6 ft.

$$

PKZ181-230000-
North and West of Nunivak Island-
314 AM AKDT Thu Apr 22 2021

.TODAY...E wind 20 kt. Seas in ice free waters 5 ft.
.TONIGHT...Variable wind 10 kt. Seas in ice free waters 2 ft.
.FRI...Variable wind 10 kt. Seas in ice free waters 2 ft.
.FRI NIGHT...SE wind 15 kt. Seas in ice free waters 2 ft.
.SAT THROUGH SUN...NE wind 25 kt. Seas in ice free waters 4 ft.
.MON...N wind 20 kt. Seas in ice free waters 3 ft.

$$

PKZ185-230000-
Saint Matthew Island Waters-
314 AM AKDT Thu Apr 22 2021

.TODAY...NE wind 15 kt. Seas in ice free waters 6 ft.
.TONIGHT...E wind 15 kt. Seas in ice free waters 5 ft.
.FRI...E wind 15 kt. Seas in ice free waters 4 ft.
.FRI NIGHT...SE wind 15 kt. Seas in ice free waters 4 ft.
.SAT...E wind 25 kt. Seas in ice free waters 7 ft.
.SUN...NE wind 25 kt. Seas in ice free waters 7 ft.
.MON...N wind 20 kt. Seas in ice free waters 5 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
459 AM AKDT Mon Apr 19 2021

.ANALYSIS AND UPPER LEVELS...

The blocked pattern featuring a prolonged period of warm and dry
conditions across much of the mainland continues today. A strong
omega-shaped ridge remains anchored in place from the Canadian
Rockies to the eastern interior. A weakness in the ridge that
allowed upper clouds and moisture to infiltrate parts of
Southcentral on Sunday has since filled in, with predominantly
clear skies now returning to most of the area. Areas that
remained free of clouds farther east yesterday have continued to
observe soaring temperatures following peak daytime heating. This
included a high of 71 F at the Cordova airport on Saturday, where
weak northeasterly winds and subsidence likely aided temperatures
locally with downslope warming.

To the south of the ridge, a large, stacked low continues
to swirl south of the Gulf as it retrogrades northwest towards
the southern AKPen. The pressure gradient between the low and the
ridging farther north is helping to drive northeasterly small
craft to low gale force winds over the western Gulf and across
the southern Bering. The low's occluded front is also beginning
to bring rain showers into the southern AKPen and Eastern
Aleutians. Conditions continue to be about as low-impact and calm
as one could expect elsewhere for this point in the year.

&&

.MODEL DISCUSSION...

Models are still in very good agreement at the synoptic level, and
overall forecast confidence is high. However, the fate of an
Arctic trough dropping into the eastern mainland near the AlCan
border on Tuesday and Wednesday remains somewhat contested. The
ECMWF/Canadian continue to show a more progressive and north
track for this feature, keeping weak ridging intact over
Southcentral through midweek. The GFS/NAM show the wave axis drop
farther south, ultimately becoming entangled with the easterly
wave moving across the AKPen on Tuesday. The trough then pushes
more into the Susitna Valley through Tuesday night with this
scenario, resulting in some precipitation potential from the
Susitna Valley to the Copper River Basin. This could involve some
mixing issues, especially for the Copper River Basin where the
coldest air would spread into from Tuesday to early Wednesday.

&&

.AVIATION...

PANC...VFR conditions will persist. Southeast winds out of the
Turnagain Arm of around 10 to 15 kts may impact the terminal at
times from this afternoon through early Tuesday.

&&

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

A vertically stacked low situated well south of Kodiak Island this
morning will lift a front north into the western Gulf today and
eventually into the northern Gulf by this evening. This system
will bring rain and higher elevation rain/snow first to Kodiak
Island then to coastal Southcentral. For interior locations,
another mainly clear and dry day is on tap as the weather over a
majority of the state is dominated by an expansive area of high
pressure. This ridge, however, is moving east, and that will allow
a southerly flow to develop across Southcentral by the afternoon
which will allow for some higher clouds to advance across the
interior.

As the frontal system approaches, its associated upper-level
shortwave will also move inland. This feature is expected to help
the increasing southeasterly gap winds ahead of the surface front
mix down and allow for a southerly wind to develop for places like
Anchorage and Palmer this afternoon. The front is expected to
stall out and weaken along the coast, keeping a lingering threat
for coastal rain showers and higher elevation rain/snow showers in
the forecast through late Tuesday.

Also on Tuesday, a shortwave and associated cold front will drop
from northwest Alaska to the Alaska Range. There are still
uncertainties as to timing of this feature and just how far south
it digs before exiting to the east. Right now, it looks like an
increased chance for mixed rain/snow showers across the northern
half of the Susitna Valley, Talkeetna Mountains, and Copper River
Basin Tuesday afternoon through early Wednesday. Temperatures
Tuesday will be cooler and more seasonal for this time of year as
the front ushers in cooler air and increased cloud cover. However,
the Rex Block pattern looks to re-establish by Wednesday,
allowing for a return to clear and dry conditions along with above
normal temperatures for the second half of the week.

&&

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

The upper level high pressure ridge gets shoved off to the east
late this afternoon by a longwave trough extending off a polar
low. This allows a wave of energy along a trough on the backside
of the North Pacific low to move across Southwest Alaska. The main
impacts will be increased winds across Bristol Bay, especially
through the gaps in the Alaska Range and across the Kuskokwim
Delta. A majority of the precip with this system will get caught
up along the Aleutian Range. Most of Southwest Alaska is expected
to be dry, with relatively clear skies throughout the day Monday
and clouds rolling in late Monday night.

&&

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

The front extending off the North Pacific low moves across the
Southern AKPen and into the Bering this afternoon, producing rain
showers across the Eastern and Central Aleutians. The backside of
the low consists of gusty northerly winds across much of the
Bering, with areas of gales in the northern Bering and south of
the AKPen from Monday night into Tuesday morning. This transition
to colder northerly flow allows for some heavy freezing spray
concerns along the ice edge in the northern Bering late Monday
night and Tuesday morning. As winds begin to diminish Tuesday
afternoon, the threat of heavy freezing spray will subside.

A secondary North Pacific low develops Tuesday night and rotates
around our existing low before merging and moving south of the
AKPen. As the two systems become one, the new low strengthens and
brings high end gales south of the AKPen and Aleutian Chain.
There is the possibility for a period of storm force winds on
Wednesday as well, however, there is still some model
inconsistency with the higher end winds. Additionally, expect
another round of showers to spread across the southern AKPen to
the Central Aleutians.

&&

.MARINE (Days 3 through 5: Tuesday through Thursday)...

Shelikof Strait and the Gulf of Alaska southeast Kodiak looks
active late Tuesday and Wednesday. Expect gusty and enhanced seas
for this vicinity. With a tight pressure gradient in place, there
is potential for gales to develop south of the Alaska Peninsula,
and also the Eastern Aleutians on both the Pacific and Bering
side. Tue through Thur...the seas over the Bering should stay
below 11 feet. However, seas south of the Eastern and Central
Aleutian could be upwards of 17 ft.

&&

.Long Term Forecast (Days 4 through 7: Thursday through
Sunday)...

This forecast package was composed using a blend of models. There
are a few items that jump out. Temperatures in Southcentral and SW
AK will be spring like and numerous locations will hit or exceed
the 50 F benchmark. There are a couple of systems in the North
Pacific that the models don't have a precise track locked on yet.
Widespread subsidence from an upper level high will be the cause
of the the warm and dry trend over Southcentral and SW AK.
Overall, it will be a mild forecast period.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale Warning: 138,150,155,181,185.
		 Heavy Freezing Spray: 185.
FIRE WEATHER...NONE.

&&

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