Alert archive / Alaska / Small Craft Advisories in 2021

Small Craft Advisory 323, NWS Anchorage, AK

April 20, 2021

NWS Anchorage, AK issued this small craft advisory at Apr 20, 2021, 3:57 AM AKDT. It was in force for 5 days.

The area

The counties it named.

The facts

Issued
Apr 20, 2021, 3:57 AM AKDT (11:57 UTC)
Expired
Apr 25, 2021, 3:38 PM AKDT
In force
5 days
Issued by
NWS Anchorage, AK

The text

As transmitted.

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.

$$
12 follow-up statements
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.

$$
750 
FZAK52 PAFC 222359
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
359 PM 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.

PKZ199-231245-
359 PM 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 997 mb low 175 nm South of Cape Sarichef dissipates Fri 
afternoon. A 995 mb North Pacific low moves to 180 nm south of Atka 
at 985 mb for Fri night then shifts to 100 nm south of Dutch Harbor 
at 989 mb by Sat afternoon. Its front remains south of the Aleutians 
and Alaska Peninsula. 

$$

PKZ150-231245-
South of the AK Peninsula Sitkinak to Castle Cape-
359 PM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...E wind 15 kt. Seas 8 ft.
.FRI...NE wind 15 kt. Seas 6 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 5 ft.
.SAT NIGHT...SE wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...E wind 30 kt. Seas 11 ft.
.TUE...NE wind 25 kt. Seas 8 ft.

$$

PKZ155-231245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
359 PM AKDT Thu Apr 22 2021

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

.TONIGHT...E wind 25 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.FRI NIGHT...SE wind 25 kt. Seas 6 ft.
.SAT AND SAT NIGHT...SE wind 30 kt. Seas 11 ft.
.SUN THROUGH MON...E wind 30 kt. Seas 10 ft.
.TUE...NE wind 20 kt. Seas 8 ft.

$$

PKZ160-231245-
Bristol Bay-
359 PM AKDT Thu Apr 22 2021

.TONIGHT...E wind 15 kt. Seas 2 ft.
.FRI...E wind 10 kt. Seas 1 foot.
.FRI NIGHT...NE wind 10 kt. Seas 1 foot.
.SAT...E wind 20 kt. Seas 2 ft.
.SAT NIGHT...E wind 25 kt. Seas 3 ft.
.SUN THROUGH MON...NE wind 25 kt. Seas 3 ft.
.TUE...NE wind 20 kt. Seas 2 ft.

$$

PKZ165-231245-
Port Heiden to Cape Sarichef-
359 PM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...E wind 15 kt. Seas 4 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.FRI NIGHT...SE wind 25 kt. Seas 4 ft.
.SAT AND SAT NIGHT...SE wind 30 kt. Seas 7 ft.
.SUN THROUGH MON...NE wind 30 kt. Seas 6 ft.
.TUE...NE wind 20 kt. Seas 5 ft.

$$

PKZ170-231245-
Cape Sarichef to Nikolski Bering Side-
359 PM AKDT Thu Apr 22 2021

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 7 ft.
.FRI...E wind 20 kt. Seas 4 ft.
.FRI NIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas
5 ft building to 8 ft by afternoon. Rain.
.SAT...SE wind 35 kt. Seas 10 ft.
.SAT NIGHT...SE wind 20 kt. Seas 7 ft.
.SUN...E wind 25 kt. Seas 7 ft.
.MON...N wind 25 kt. Seas 6 ft.
.TUE...NE wind 20 kt. Seas 6 ft.

$$

PKZ171-231245-
Unalaska Bay-
359 PM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...E wind 15 kt. Seas 3 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.FRI NIGHT...SE wind 20 kt increasing to 30 kt after midnight. Seas 
5 ft. Rain.
.SAT...SE wind 35 kt. Seas 5 ft.
.SAT NIGHT...S wind 15 kt. Seas 2 ft.
.SUN...SE wind 15 kt. Seas 2 ft.
.MON...NE wind 15 kt. Seas 3 ft.
.TUE...NE wind 10 kt. Seas 3 ft.

$$

PKZ172-231245-
Cape Sarichef to Nikolski Pacific Side-
359 PM AKDT Thu Apr 22 2021

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 10 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.FRI NIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas
6 ft building to 9 ft after midnight. Rain.
.SAT...SE wind 30 kt. Seas 11 ft.
.SAT NIGHT...S wind 20 kt. Seas 12 ft.
.SUN...SE wind 20 kt. Seas 11 ft.
.MON THROUGH TUE...NE wind 20 kt. Seas 8 ft.

$$

PKZ173-231245-
Nikolski to Seguam Island Bering Side-
359 PM AKDT Thu Apr 22 2021

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

.TONIGHT...NE wind 15 kt. Seas 8 ft.
.FRI...E wind 20 kt. Seas 5 ft.
.FRI NIGHT...E wind 30 kt. Seas 5 ft building to 8 ft after midnight.
Widespread rain showers.
.SAT...E wind 25 kt. Seas 8 ft.
.SAT NIGHT...NW wind 15 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 25 kt. Seas 9 ft.
.TUE...NE wind 20 kt. Seas 7 ft.

$$

PKZ174-231245-
Nikolski to Seguam Island Pacific Side-
359 PM AKDT Thu Apr 22 2021

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 9 ft.
.FRI...E wind 20 kt. Seas 7 ft.
.FRI NIGHT...E wind 35 kt. Seas 10 ft. Rain.
.SAT...SW wind 20 kt. Seas 12 ft.
.SAT NIGHT...W wind 20 kt. Seas 11 ft.
.SUN...NW wind 25 kt. Seas 9 ft.
.MON...NW wind 30 kt. Seas 9 ft.
.TUE...NE wind 20 kt. Seas 7 ft.

$$

PKZ175-231245-
Seguam Island to Adak Bering Side-
359 PM AKDT Thu Apr 22 2021

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

.TONIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...E wind 20 kt. Seas 6 ft.
.FRI NIGHT...E wind 30 kt. Seas 7 ft. Rain.
.SAT...N wind 20 kt. Seas 8 ft.
.SAT NIGHT...NW wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 12 ft.
.TUE...NE wind 20 kt. Seas 7 ft.

$$

PKZ176-231245-
Seguam Island to Adak Pacific Side-
359 PM AKDT Thu Apr 22 2021

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

.TONIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...E wind 15 kt increasing to 30 kt in the afternoon. Seas 7
ft.
.FRI NIGHT...E wind 30 kt becoming N after midnight. Seas 10 ft. 
Widespread rain showers.
.SAT...NW wind 20 kt. Seas 10 ft.
.SAT NIGHT...NW wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 10 ft.
.TUE...NE wind 20 kt. Seas 6 ft.

$$

PKZ177-231245-
Adak to Kiska-
359 PM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

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

$$

PKZ178-231245-
Kiska to Attu-
359 PM AKDT Thu Apr 22 2021

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

$$

PKZ179-231245-
Pribilof Islands Near Shore Waters-
359 PM AKDT Thu Apr 22 2021

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...E wind 15 kt. Seas 6 ft.
.FRI...E wind 15 kt. Seas 4 ft.
.FRI NIGHT...E wind 15 kt increasing to 25 kt after midnight. Seas 5
ft.
.SAT...E wind 30 kt. Seas 8 ft.
.SAT NIGHT...E wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...N wind 25 kt. Seas 8 ft.
.TUE...NE wind 20 kt. Seas 5 ft.

$$

PKZ180-231245-
Kuskokwim Delta and Etolin Strait-
359 PM AKDT Thu Apr 22 2021

.TONIGHT...NE wind 15 kt. Seas in ice free waters 3 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 25 kt. Seas in ice free waters 4 ft.
.SAT NIGHT...E wind 30 kt. Seas in ice free waters 7 ft.
.SUN THROUGH MON...NE wind 25 kt. Seas in ice free waters 6 ft.
.TUE...NE wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ181-231245-
North and West of Nunivak Island-
359 PM AKDT Thu Apr 22 2021

.TONIGHT...NE wind 10 kt. Seas in ice free waters 2 ft.
.FRI...E wind 10 kt. Seas in ice free waters 2 ft.
.FRI NIGHT...E wind 15 kt. Seas in ice free waters 2 ft.
.SAT...E wind 20 kt. Seas in ice free waters 2 ft.
.SAT NIGHT...E wind 25 kt. Seas in ice free waters 3 ft.
.SUN THROUGH TUE...NE wind 20 kt. Seas in ice free waters 3 ft.

$$

PKZ185-231245-
Saint Matthew Island Waters-
359 PM AKDT Thu Apr 22 2021

.TONIGHT...NE wind 10 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 20 kt. Seas in ice free waters 4 ft.
.SAT NIGHT...NE wind 25 kt. Seas in ice free waters 5 ft.
.SUN...N wind 25 kt. Seas in ice free waters 7 ft.
.MON...N wind 20 kt. Seas in ice free waters 5 ft.
.TUE...N wind 25 kt. Seas in ice free waters 5 ft.

$$
994 
FZAK52 PAFC 231143
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
343 AM AKDT Fri Apr 23 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.

PKZ199-240030-
343 AM AKDT Fri Apr 23 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 988 mb low 320 nm southwest of Adak on Fri moves to 210 nm
southwest of Dutch Harbor on Sat. 

$$

PKZ150-240030-
South of the AK Peninsula Sitkinak to Castle Cape-
343 AM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...NE wind 15 kt. Seas 6 ft.
.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.SAT...SE wind 25 kt. Seas 6 ft.
.SAT NIGHT...SE wind 30 kt. Seas 9 ft.
.SUN THROUGH MON...NE wind 30 kt. Seas 11 ft.
.TUE...NE wind 20 kt. Seas 9 ft.

$$

PKZ155-240030-
South of the AK Peninsula Castle Cape to Cape Sarichef-
343 AM AKDT Fri Apr 23 2021

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

.TODAY...E wind 20 kt. Seas 7 ft.
.TONIGHT...E wind 20 kt becoming SE 30 kt after midnight. From the
Shumagin Islands E, E wind 20 kt. Seas 6 ft.
.SAT...E wind 30 kt. Seas 11 ft. Widespread rain showers.
.SAT NIGHT...SE wind 30 kt. Seas 10 ft.
.SUN...SE wind 20 kt. Seas 11 ft.
.MON...NE wind 30 kt. Seas 10 ft.
.TUE...NE wind 20 kt. Seas 9 ft.

$$

PKZ160-240030-
Bristol Bay-
343 AM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...E wind 10 kt. Seas 2 foot.
.TONIGHT...NE wind 10 kt. Seas 2 foot.
.SAT...E wind 25 kt. Seas 5 ft.
.SAT NIGHT...E wind 25 kt. Seas 5 ft.
.SUN...E wind 30 kt. Seas 6 ft.
.MON...NE wind 20 kt. Seas 4 ft.
.TUE...NE wind 15 kt. Seas 3 ft.

$$

PKZ165-240030-
Port Heiden to Cape Sarichef-
343 AM AKDT Fri Apr 23 2021

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

.TODAY...E wind 15 kt. Seas 3 ft.
.TONIGHT...E wind 20 kt increasing to 30 kt after midnight. From
Port Moller E, E wind 20 kt. Seas 4 ft.
.SAT...E wind 30 kt. Seas 7 ft.
.SAT NIGHT...SE wind 30 kt. Seas 7 ft.
.SUN...E wind 30 kt. Seas 6 ft.
.MON...NE wind 25 kt. Seas 5 ft.
.TUE...NE wind 20 kt. Seas 6 ft.

$$

PKZ170-240030-
Cape Sarichef to Nikolski Bering Side-
343 AM AKDT Fri Apr 23 2021

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...E wind 15 kt increasing to 25 kt in the afternoon. Seas
4 ft.
.TONIGHT...E wind 35 kt. Seas 9 ft. Rain.
.SAT...E wind 35 kt. Seas 10 ft. Rain.
.SAT NIGHT...SE wind 20 kt. Seas 7 ft.
.SUN...NE wind 25 kt. Seas 7 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 10 ft.

$$

PKZ171-240030-
Unalaska Bay-
343 AM AKDT Fri Apr 23 2021

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

.TODAY...E wind 20 kt. Seas 3 ft.
.TONIGHT...E wind 30 kt. Seas 5 ft. Rain.
.SAT...E wind 30 kt becoming SE 15 kt in the afternoon. Seas 5 ft
subsiding to 2 ft in the afternoon. Widespread rain showers.
.SAT NIGHT...S wind 10 kt. Seas 2 ft.
.SUN...NE wind 10 kt. Seas 3 ft.
.MON...N wind 20 kt. Seas 6 ft.
.TUE...N wind 15 kt. Seas 5 ft.

$$

PKZ172-240030-
Cape Sarichef to Nikolski Pacific Side-
343 AM AKDT Fri Apr 23 2021

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...NE wind 20 kt. Seas 7 ft.
.TONIGHT...E wind 35 kt. Seas 10 ft. Rain.
.SAT...SE wind 35 kt becoming S 20 kt in the afternoon. Seas 10 ft. 
Rain.
.SAT NIGHT...S wind 20 kt. Seas 12 ft.
.SUN...NE wind 15 kt. Seas 10 ft.
.MON...N wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 9 ft.

$$

PKZ173-240030-
Nikolski to Seguam Island Bering Side-
343 AM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...E wind 20 kt. Seas 5 ft.
.TONIGHT...E wind 30 kt. Seas 8 ft. Widespread rain showers.
.SAT...NE wind 20 kt. Seas 7 ft. Rain.
.SAT NIGHT...NW wind 15 kt. Seas 8 ft.
.SUN...N wind 30 kt. Seas 11 ft.
.MON...N wind 35 kt. Seas 13 ft.
.TUE...N wind 30 kt. Seas 9 ft.

$$

PKZ174-240030-
Nikolski to Seguam Island Pacific Side-
343 AM AKDT Fri Apr 23 2021

...GALE WARNING TONIGHT...

.TODAY...E wind 15 kt increasing to 25 kt in the afternoon. Seas
7 ft.
.TONIGHT...E wind 35 kt. Seas 10 ft. Widespread rain showers.
.SAT...W wind 20 kt. Seas 11 ft. Rain.
.SAT NIGHT...W wind 20 kt. Seas 10 ft.
.SUN...NW wind 30 kt. Seas 10 ft.
.MON...N wind 35 kt. Seas 13 ft.
.TUE...N wind 30 kt. Seas 10 ft.

$$

PKZ175-240030-
Seguam Island to Adak Bering Side-
343 AM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 15 kt increasing to 25 kt in the afternoon. Seas
6 ft.
.TONIGHT...NE wind 25 kt. Seas 7 ft.
.SAT...N wind 20 kt. Seas 7 ft.
.SAT NIGHT...NW wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...N wind 30 kt. Seas 12 ft.
.TUE...N wind 25 kt. Seas 9 ft.

$$

PKZ176-240030-
Seguam Island to Adak Pacific Side-
343 AM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...E wind 15 kt increasing to 25 kt in the afternoon. Seas
7 ft.
.TONIGHT...NE wind 30 kt. Seas 9 ft. Widespread rain showers.
.SAT...NW wind 25 kt. Seas 10 ft.
.SAT NIGHT...NW wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 35 kt. Seas 11 ft.
.TUE...N wind 30 kt. Seas 8 ft.

$$

PKZ177-240030-
Adak to Kiska-
343 AM AKDT Fri Apr 23 2021

.TODAY...NE wind 20 kt. Seas 6 ft.
.TONIGHT...N wind 20 kt. Seas 6 ft.
.SAT...N wind 20 kt. Seas 6 ft.
.SAT NIGHT...NW wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...N wind 30 kt. Seas 9 ft.
.TUE...NE wind 20 kt. Seas 6 ft.

$$

PKZ178-240030-
Kiska to Attu-
343 AM AKDT Fri Apr 23 2021

.TODAY...N wind 15 kt. Seas 6 ft.
.TONIGHT...N wind 15 kt. Seas 5 ft.
.SAT...Variable wind 10 kt. Seas 5 ft.
.SAT NIGHT...NW wind 15 kt. Seas 5 ft.
.SUN...NW wind 20 kt. Seas 5 ft.
.MON...N wind 20 kt. Seas 5 ft.
.TUE...NE wind 30 kt. Seas 10 ft.

$$

PKZ179-240030-
Pribilof Islands Near Shore Waters-
343 AM AKDT Fri Apr 23 2021

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

.TODAY...E wind 15 kt. Seas 4 ft.
.TONIGHT...E wind 25 kt. Seas 6 ft.
.SAT...E wind 30 kt. Seas 8 ft.
.SAT NIGHT...NE wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...N wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 7 ft.

$$

PKZ180-240030-
Kuskokwim Delta and Etolin Strait-
343 AM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...E wind 15 kt. Seas in ice free waters 2 ft.
.TONIGHT...E wind 15 kt. Seas in ice free waters 2 ft.
.SAT...E wind 25 kt. Seas in ice free waters 4 ft.
.SAT NIGHT...E wind 30 kt. Seas in ice free waters 7 ft.
.SUN...NE wind 30 kt. Seas in ice free waters 7 ft.
.MON THROUGH TUE...N wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ181-240030-
North and West of Nunivak Island-
343 AM AKDT Fri Apr 23 2021

.TODAY...SE wind 15 kt. Seas in ice free waters 3 ft.
.TONIGHT...E wind 15 kt. Seas in ice free waters 3 ft.
.SAT...NE wind 15 kt. Seas in ice free waters 3 ft.
.SAT NIGHT...E wind 25 kt. Seas in ice free waters 5 ft.
.SUN...N wind 20 kt. Seas in ice free waters 3 ft.
.MON...N wind 25 kt. Seas in ice free waters 6 ft.
.TUE...NW wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ185-240030-
Saint Matthew Island Waters-
343 AM AKDT Fri Apr 23 2021

.TODAY...E wind 15 kt. Seas in ice free waters 4 ft.
.TONIGHT...E wind 15 kt. Seas in ice free waters 4 ft.
.SAT...E wind 20 kt. Seas in ice free waters 4 ft.
.SAT NIGHT...NE wind 25 kt. Seas in ice free waters 5 ft.
.SUN THROUGH MON...NW wind 25 kt. Seas in ice free waters 5 ft.
.TUE...NW wind 20 kt. Seas in ice free waters 3 ft.

$$
736 
FZAK52 PAFC 232358
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
358 PM AKDT Fri Apr 23 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.

PKZ199-241245-
358 PM AKDT Fri Apr 23 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi Volcano, 140nm West of Adak is currently active.

A 987 mb low 310 nm South of Adak moves to 130 nm South of False 
Pass at 992 mb for Sun afternoon. Its front moves over the 
Aleutians and Alaska Peninsula through Sun afternoon. 

$$

PKZ150-241245-
South of the AK Peninsula Sitkinak to Castle Cape-
358 PM AKDT Fri Apr 23 2021

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

.TONIGHT...SE wind 15 kt. Seas 5 ft.
.SAT...SE wind 20 kt increasing to 30 kt in the afternoon. Seas 7 
ft.
.SAT NIGHT...SE wind 30 kt. Seas 10 ft. Rain.
.SUN...SE wind 30 kt. Seas 9 ft.
.SUN NIGHT...E wind 40 kt. Seas 12 ft.
.MON...NE wind 40 kt. Seas 14 ft.
.TUE...NE wind 20 kt. Seas 9 ft.
.WED...NE wind 15 kt. Seas 6 ft.

$$

PKZ155-241245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
358 PM AKDT Fri Apr 23 2021

...GALE WARNING SATURDAY...

.TONIGHT...SE wind 30 kt except E 20 kt from the Shumagin Islands E.
Seas 7 ft.
.SAT...SE wind 35 kt. Seas 10 ft. Rain.
.SAT NIGHT...SE wind 20 kt. From the Shumagin Islands E, SE wind
30 kt diminishing to 20 kt after midnight. Seas 10 ft.
.SUN...SE wind 20 kt. Seas 10 ft.
.SUN NIGHT...NE wind 25 kt. Seas 8 ft.
.MON...NE wind 35 kt. Seas 12 ft.
.TUE...NE wind 20 kt. Seas 9 ft.
.WED...N wind 15 kt. Seas 5 ft.

$$

PKZ160-241245-
Bristol Bay-
358 PM AKDT Fri Apr 23 2021

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

.TONIGHT...Variable wind 10 kt. Seas 1 foot.
.SAT...E wind 15 kt increasing to 25 kt in the afternoon. Seas 3 ft.
.SAT NIGHT...E wind 30 kt. Seas 4 ft.
.SUN...E wind 30 kt. Seas 5 ft.
.SUN NIGHT...E wind 25 kt. Seas 4 ft.
.MON...NE wind 25 kt. Seas 3 ft.
.TUE...NE wind 15 kt. Seas 2 ft.
.WED...N wind 10 kt. Seas 1 foot.

$$

PKZ165-241245-
Port Heiden to Cape Sarichef-
358 PM AKDT Fri Apr 23 2021

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

.TONIGHT...E wind 25 kt. Seas 4 ft.
.SAT...E wind 30 kt. Seas 7 ft.
.SAT NIGHT...E wind 30 kt. Seas 7 ft.
.SUN...E wind 30 kt. Seas 6 ft.
.SUN NIGHT...NE wind 25 kt. Seas 5 ft.
.MON...NE wind 25 kt. Seas 7 ft.
.TUE...NE wind 20 kt. Seas 6 ft.
.WED...N wind 15 kt. Seas 4 ft.

$$

PKZ170-241245-
Cape Sarichef to Nikolski Bering Side-
358 PM AKDT Fri Apr 23 2021

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...E wind 35 kt. Seas 9 ft. Rain.
.SAT...E wind 35 kt diminishing to 25 kt in the afternoon. Seas
10 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 6 ft.
.SUN...NE wind 15 kt. Seas 5 ft.
.SUN NIGHT...N wind 25 kt. Seas 6 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 10 ft.
.WED...N wind 15 kt. Seas 6 ft.

$$

PKZ171-241245-
Unalaska Bay-
358 PM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TONIGHT...SE wind increasing to 30 kt. Seas 5 ft. Rain.
.SAT...E wind 30 kt becoming variable less than 10 kt in the 
afternoon. Seas 5 ft subsiding to 2 ft in the afternoon.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 3 ft.
.SUN NIGHT...N wind 15 kt. Seas 3 ft.
.MON...N wind 20 kt. Seas 7 ft.
.TUE...N wind 15 kt. Seas 5 ft.
.WED...N wind 10 kt. Seas 3 ft.

$$

PKZ172-241245-
Cape Sarichef to Nikolski Pacific Side-
358 PM AKDT Fri Apr 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 9 ft. Rain.
.SAT...SE wind 30 kt becoming variable to 15 kt in the afternoon. 
Seas 10 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 11 ft.
.SUN...W wind 15 kt. Seas 9 ft.
.SUN NIGHT...N wind 15 kt. Seas 7 ft.
.MON...N wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.WED...N wind 15 kt. Seas 6 ft.

$$

PKZ173-241245-
Nikolski to Seguam Island Bering Side-
358 PM AKDT Fri Apr 23 2021

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

.TONIGHT...E wind 30 kt. Seas 7 ft. Rain.
.SAT...N wind 20 kt. Seas 8 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 20 kt. Seas 6 ft.
.SUN NIGHT...N wind 30 kt. Seas 11 ft.
.MON...N wind 35 kt. Seas 13 ft.
.TUE...N wind 30 kt. Seas 9 ft.
.WED...NE wind 15 kt. Seas 6 ft.

$$

PKZ174-241245-
Nikolski to Seguam Island Pacific Side-
358 PM AKDT Fri Apr 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 35 kt. Seas 10 ft. Rain.
.SAT...NW wind 25 kt. Seas 11 ft.
.SAT NIGHT...NW wind 20 kt. Seas 9 ft.
.SUN...NW wind 20 kt. Seas 8 ft.
.SUN NIGHT...NW wind 30 kt. Seas 9 ft.
.MON...N wind 35 kt. Seas 13 ft.
.TUE...N wind 30 kt. Seas 10 ft.
.WED...NE wind 15 kt. Seas 8 ft.

$$

PKZ175-241245-
Seguam Island to Adak Bering Side-
358 PM AKDT Fri Apr 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt. Seas 7 ft.
.SAT...N wind 20 kt. Seas 7 ft.
.SAT NIGHT...NW wind 20 kt. Seas 7 ft.
.SUN AND SUN NIGHT...N wind 30 kt. Seas 11 ft.
.MON...N wind 30 kt. Seas 12 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.WED...NE wind 20 kt. Seas 6 ft.

$$

PKZ176-241245-
Seguam Island to Adak Pacific Side-
358 PM AKDT Fri Apr 23 2021

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

.TONIGHT...NE wind 30 kt. Seas 10 ft. Rain.
.SAT...NW wind 25 kt. Seas 10 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 30 kt. Seas 9 ft.
.SUN NIGHT...N wind 35 kt. Seas 10 ft.
.MON...NW wind 35 kt. Seas 11 ft.
.TUE...N wind 30 kt. Seas 8 ft.
.WED...NE wind 15 kt. Seas 9 ft.

$$

PKZ177-241245-
Adak to Kiska-
358 PM AKDT Fri Apr 23 2021

.TONIGHT...N wind 20 kt. Seas 5 ft.
.SAT...N wind 15 kt. Seas 6 ft.
.SAT NIGHT...NW wind 20 kt. Seas 6 ft.
.SUN AND SUN NIGHT...N wind 30 kt. Seas 8 ft.
.MON...N wind 30 kt. Seas 9 ft.
.TUE...NE wind 20 kt. Seas 6 ft.
.WED...NE wind 25 kt. Seas 10 ft.

$$

PKZ178-241245-
Kiska to Attu-
358 PM AKDT Fri Apr 23 2021

.TONIGHT...N wind 15 kt. Seas 5 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SAT NIGHT...NW wind 15 kt. Seas 5 ft.
.SUN AND SUN NIGHT...NW wind 20 kt. Seas 5 ft.
.MON...N wind 20 kt. Seas 5 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 11 ft.

$$

PKZ179-241245-
Pribilof Islands Near Shore Waters-
358 PM AKDT Fri Apr 23 2021

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

.TONIGHT...E wind increasing to 25 kt. Seas 6 ft.
.SAT...E wind 25 kt. Seas 8 ft.
.SAT NIGHT...NE wind 25 kt. Seas 8 ft. Rain.
.SUN...NE wind 25 kt. Seas 8 ft.
.SUN NIGHT...N wind 30 kt. Seas 9 ft.
.MON...N wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.WED...N wind 15 kt. Seas 4 ft.

$$

PKZ180-241245-
Kuskokwim Delta and Etolin Strait-
358 PM AKDT Fri Apr 23 2021

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

.TONIGHT...E wind 15 kt. Seas in ice free waters 3 ft.
.SAT...E wind 25 kt. Seas in ice free waters 5 ft.
.SAT NIGHT...E wind 30 kt. Seas in ice free waters 7 ft.
.SUN...NE wind 30 kt. Seas in ice free waters 7 ft.
.SUN NIGHT...NE wind 25 kt. Seas in ice free waters 6 ft.
.MON THROUGH TUE...N wind 20 kt. Seas in ice free waters 4 ft.
.WED...N wind 15 kt. Seas in ice free waters 3 ft.

$$

PKZ181-241245-
North and West of Nunivak Island-
358 PM AKDT Fri Apr 23 2021

.TONIGHT...E wind 15 kt. Seas in ice free waters 2 ft.
.SAT...NE wind 15 kt. Seas in ice free waters 2 ft.
.SAT NIGHT...E wind 20 kt. Seas in ice free waters 3 ft.
.SUN AND SUN NIGHT...N wind 20 kt. Seas in ice free waters 3 ft.
.MON...N wind 25 kt. Seas in ice free waters 4 ft.
.TUE THROUGH WED...NW wind 20 kt. Seas in ice free waters 3 ft.

$$

PKZ185-241245-
Saint Matthew Island Waters-
358 PM AKDT Fri Apr 23 2021

.TONIGHT...E wind 15 kt. Seas in ice free waters 4 ft.
.SAT...NE wind 20 kt. Seas in ice free waters 4 ft.
.SAT NIGHT...NE wind 20 kt. Seas in ice free waters 4 ft.
.SUN...N wind 20 kt. Seas in ice free waters 5 ft.
.SUN NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.MON...NW wind 25 kt. Seas in ice free waters 5 ft.
.TUE...NW wind 20 kt. Seas in ice free waters 3 ft.
.WED...N wind 15 kt. Seas in ice free waters 4 ft.

$$
851 
FZAK52 PAFC 241046
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
246 AM AKDT Sat Apr 24 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.

PKZ199-250000-
246 AM AKDT Sat Apr 24 2021

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

Semisopochnoi Volcano, 140nm West of Adak is currently active.

A 990 mb low 167 nm southwest of Dutch Harbor on Sat moves to 60
nm northeast of Dutch Harbor at 992 mb on Sun. Its front moves
across the Bering through Sun. High pressure enters the western
Bering on Sun.

$$

PKZ150-250000-
South of the AK Peninsula Sitkinak to Castle Cape-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...SE wind 30 kt. Seas 7 ft.
.TONIGHT...SE wind 30 kt. Seas 10 ft. Rain.
.SUN...SE wind 30 kt. Seas 9 ft. Rain.
.SUN NIGHT...E wind 35 kt. Seas 13 ft.
.MON...E wind 40 kt. Seas 12 ft.
.TUE...NE wind 25 kt. Seas 9 ft.
.WED...NE wind 15 kt. Seas 6 ft.

$$

PKZ155-250000-
South of the AK Peninsula Castle Cape to Cape Sarichef-
246 AM AKDT Sat Apr 24 2021

...GALE WARNING TODAY...

.TODAY...E wind 35 kt. Seas 10 ft. Rain.
.TONIGHT...SE wind 20 kt. From the Shumagin Islands E, SE wind 30 kt 
diminishing to 20 kt after midnight. Seas 11 ft. Rain.
.SUN...SE wind 20 kt. Seas 11 ft.
.SUN NIGHT...NE wind 25 kt. Seas 9 ft.
.MON...NE wind 30 kt. Seas 10 ft.
.TUE...NE wind 25 kt. Seas 9 ft.
.WED...NE wind 15 kt. Seas 6 ft.

$$

PKZ160-250000-
Bristol Bay-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...E wind 15 kt increasing to 25 kt in the afternoon. Seas 3 ft
building to 5 ft.
.TONIGHT...E wind 30 kt. Seas 7 ft.
.SUN...E wind 30 kt. Seas 7 ft.
.SUN NIGHT...E wind 25 kt. Seas 5 ft.
.MON...NE wind 25 kt. Seas 5 ft.
.TUE...NE wind 15 kt. Seas 2 ft.
.WED...N wind 10 kt. Seas 1 foot.

$$

PKZ165-250000-
Port Heiden to Cape Sarichef-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...E wind 30 kt. Seas 7 ft.
.TONIGHT...E wind 30 kt diminishing to 20 kt after midnight. From
Port Moller E, E wind 30 kt. Seas 7 ft.
.SUN...E wind 15 kt except E 25 kt from Port Moller E. Seas 5 ft.
.SUN NIGHT...NE wind 25 kt. Seas 5 ft.
.MON...NE wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.WED...N wind 15 kt. Seas 4 ft.

$$

PKZ170-250000-
Cape Sarichef to Nikolski Bering Side-
246 AM AKDT Sat Apr 24 2021

...GALE WARNING TODAY...

.TODAY...E wind 35 kt diminishing to 25 kt in the afternoon. Seas
9 ft.
.TONIGHT...E wind 15 kt. Seas 6 ft.
.SUN...NE wind 15 kt. Seas 4 ft.
.SUN NIGHT...N wind 25 kt. Seas 7 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 12 ft.
.WED...NE wind 15 kt. Seas 6 ft.

$$

PKZ171-250000-
Unalaska Bay-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...E wind 30 kt diminishing to 10 kt in the afternoon. Seas
5 ft subsiding to 2 ft in the afternoon.
.TONIGHT...E wind 10 kt in the evening becoming variable less than
10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 3 ft.
.SUN NIGHT...N wind 10 kt. Seas 3 ft.
.MON...N wind 25 kt. Seas 9 ft.
.TUE...N wind 20 kt. Seas 7 ft.
.WED...NE wind 10 kt. Seas 3 ft.

$$

PKZ172-250000-
Cape Sarichef to Nikolski Pacific Side-
246 AM AKDT Sat Apr 24 2021

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt becoming E 15 kt in the afternoon. Seas
10 ft.
.TONIGHT...Variable wind 10 kt. Seas 11 ft.
.SUN...Variable wind 10 kt. Seas 9 ft.
.SUN NIGHT...N wind 15 kt. Seas 7 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 9 ft.
.WED...NE wind 15 kt. Seas 5 ft.

$$

PKZ173-250000-
Nikolski to Seguam Island Bering Side-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...NE wind 20 kt. Seas 8 ft.
.TONIGHT...N wind 20 kt. Seas 8 ft.
.SUN...N wind 25 kt. Seas 7 ft.
.SUN NIGHT...N wind 30 kt. Seas 11 ft.
.MON...N wind 35 kt. Seas 14 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.WED...NE wind 15 kt. Seas 7 ft.

$$

PKZ174-250000-
Nikolski to Seguam Island Pacific Side-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...N wind 25 kt. Seas 11 ft.
.TONIGHT...NW wind 20 kt. Seas 10 ft.
.SUN...NW wind 20 kt. Seas 8 ft.
.SUN NIGHT...N wind 30 kt. Seas 10 ft.
.MON...N wind 35 kt. Seas 14 ft.
.TUE...N wind 30 kt. Seas 13 ft.
.WED...NE wind 15 kt. Seas 10 ft.

$$

PKZ175-250000-
Seguam Island to Adak Bering Side-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...N wind 20 kt. Seas 7 ft.
.TONIGHT...NW wind 20 kt. Seas 7 ft.
.SUN...NW wind 30 kt. Seas 9 ft.
.SUN NIGHT...N wind 30 kt. Seas 12 ft.
.MON...N wind 35 kt. Seas 13 ft.
.TUE...N wind 25 kt. Seas 11 ft.
.WED...NE wind 20 kt. Seas 7 ft.

$$

PKZ176-250000-
Seguam Island to Adak Pacific Side-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...NW wind 25 kt. Seas 10 ft.
.TONIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 30 kt. Seas 8 ft.
.SUN NIGHT...NW wind 35 kt. Seas 11 ft.
.MON...N wind 35 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 9 ft.
.WED...E wind 20 kt. Seas 13 ft.

$$

PKZ177-250000-
Adak to Kiska-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...N wind 15 kt. Seas 6 ft.
.TONIGHT...NW wind 20 kt. Seas 6 ft.
.SUN...NW wind 25 kt. Seas 7 ft.
.SUN NIGHT...NW wind 30 kt. Seas 9 ft.
.MON...N wind 25 kt. Seas 9 ft.
.TUE...NE wind 25 kt. Seas 7 ft.
.WED...NE wind 25 kt. Seas 14 ft.

$$

PKZ178-250000-
Kiska to Attu-
246 AM AKDT Sat Apr 24 2021

.TODAY...Variable wind 10 kt. Seas 5 ft.
.TONIGHT...NW wind 15 kt. Seas 5 ft.
.SUN...NW wind 20 kt. Seas 5 ft.
.SUN NIGHT...NW wind 20 kt. Seas 5 ft.
.MON...W wind 15 kt. Seas 5 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 17 ft.

$$

PKZ179-250000-
Pribilof Islands Near Shore Waters-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...E wind 25 kt. Seas 8 ft.
.TONIGHT...NE wind 25 kt. Seas 7 ft. Rain.
.SUN...NE wind 25 kt. Seas 7 ft. Rain.
.SUN NIGHT...N wind 30 kt. Seas 8 ft.
.MON...N wind 30 kt. Seas 10 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.WED...NE wind 15 kt. Seas 4 ft.

$$

PKZ180-250000-
Kuskokwim Delta and Etolin Strait-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...E wind 25 kt. Seas in ice free waters 5 ft.
.TONIGHT...E wind 30 kt. Seas in ice free waters 7 ft.
.SUN...E wind 30 kt. Seas in ice free waters 7 ft. Rain.
.SUN NIGHT...NE wind 25 kt. Seas in ice free waters 5 ft.
.MON THROUGH TUE...N wind 25 kt. Seas in ice free waters 5 ft.
.WED...N wind 15 kt. Seas in ice free waters 2 ft.

$$

PKZ181-250000-
North and West of Nunivak Island-
246 AM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...NE wind 15 kt. Seas in ice free waters 4 ft.
.TONIGHT...NE wind 20 kt. Seas in ice free waters 5 ft.
.SUN...N wind 25 kt. Seas in ice free waters 6 ft.
.SUN NIGHT...N wind 20 kt. Seas in ice free waters 5 ft.
.MON...N wind 25 kt. Seas in ice free waters 7 ft.
.TUE...N wind 20 kt. Seas in ice free waters 5 ft.
.WED...N wind 15 kt. Seas in ice free waters 4 ft.

$$

PKZ185-250000-
Saint Matthew Island Waters-
246 AM AKDT Sat Apr 24 2021

.TODAY...E wind 15 kt. Seas in ice free waters 4 ft.
.TONIGHT...NE wind 15 kt. Seas in ice free waters 4 ft.
.SUN...N wind 20 kt. Seas in ice free waters 5 ft.
.SUN NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.MON...NW wind 25 kt. Seas in ice free waters 5 ft.
.TUE...NW wind 20 kt. Seas in ice free waters 3 ft.
.WED...N wind 15 kt. Seas in ice free waters 5 ft.

$$
245 
FZAK52 PAFC 242323
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
323 PM AKDT Sat Apr 24 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.

PKZ199-251230-
323 PM AKDT Sat Apr 24 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi Volcano, 140nm West of Adak is currently active.

A 993 mb low 130 nm South of Cape Sarichef merges with a 988 mb 
low 85 nm South of Chignik for Mon afternoon. Its front moves 
over and south of the Alaska Peninsula through Mon afternoon.

$$

PKZ150-251230-
South of the AK Peninsula Sitkinak to Castle Cape-
323 PM AKDT Sat Apr 24 2021

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...E wind 30 kt. Seas 10 ft. Rain.
.SUN...SE wind 30 kt. Seas 10 ft. Rain.
.SUN NIGHT...E wind 35 kt. Seas 11 ft. Rain.
.MON...SE wind 30 kt. Seas 11 ft.
.MON NIGHT...E wind 20 kt. Seas 9 ft.
.TUE...NE wind 25 kt. Seas 8 ft.
.WED...NE wind 15 kt. Seas 6 ft.
.THU...N wind 20 kt. Seas 6 ft.

$$

PKZ155-251230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...SE wind 20 kt except SE 30 kt from the Shumagin Islands
E. Seas 11 ft.
.SUN...SE wind 20 kt. Seas 11 ft.
.SUN NIGHT...Variable wind 10 kt becoming N 15 kt after midnight.
From the Shumagin Islands E, NE wind 25 kt. Seas 8 ft. Rain.
.MON...NW wind 15 kt. Seas 7 ft.
.MON NIGHT...NE wind 15 kt. Seas 7 ft.
.TUE...NE wind 25 kt. Seas 7 ft.
.WED THROUGH THU...N wind 15 kt. Seas 7 ft.

$$

PKZ160-251230-
Bristol Bay-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...E wind 30 kt. Seas 5 ft.
.SUN...E wind 30 kt. Seas 6 ft.
.SUN NIGHT...E wind 25 kt. Seas 4 ft. Rain.
.MON...NE wind 30 kt. Seas 4 ft.
.MON NIGHT...NE wind 25 kt. Seas 3 ft.
.TUE...NE wind 20 kt. Seas 2 ft.
.WED...N wind 10 kt. Seas 1 foot.
.THU...N wind 15 kt. Seas 4 ft.

$$

PKZ165-251230-
Port Heiden to Cape Sarichef-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...E wind 30 kt. Seas 8 ft.
.SUN...E wind 25 kt. Seas 6 ft.
.SUN NIGHT...E wind 15 kt except NE 25 kt from Port Moller E. Seas
5 ft.
.MON AND MON NIGHT...NE wind 30 kt. Seas 7 ft.
.TUE...NE wind 25 kt. Seas 8 ft.
.WED THROUGH THU...N wind 15 kt. Seas 5 ft.

$$

PKZ170-251230-
Cape Sarichef to Nikolski Bering Side-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 7 ft.
.SUN...NE wind 15 kt. Seas 5 ft.
.SUN NIGHT...N wind 20 kt increasing to 30 kt after midnight. Seas
7 ft.
.MON AND MON NIGHT...N wind 30 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.WED THROUGH THU...NE wind 15 kt. Seas 6 ft.

$$

PKZ171-251230-
Unalaska Bay-
323 PM AKDT Sat Apr 24 2021

.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.
.SUN NIGHT...N wind 10 kt increasing to 15 kt after midnight. Seas
3 ft. Rain.
.MON AND MON NIGHT...N wind 25 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 10 ft.
.WED...NE wind 10 kt. Seas 3 ft.
.THU...Variable wind less than 10 kt. Seas 3 ft.

$$

PKZ172-251230-
Cape Sarichef to Nikolski Pacific Side-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...Variable wind 10 kt. Seas 11 ft.
.SUN...Variable wind 15 kt. Seas 9 ft.
.SUN NIGHT...N wind 20 kt, except variable 10 kt . Seas 7 ft.
.MON...N wind 25 kt. Seas 7 ft.
.MON NIGHT...N wind 30 kt. Seas 7 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.WED THROUGH THU...NE wind 15 kt. Seas 7 ft.

$$

PKZ173-251230-
Nikolski to Seguam Island Bering Side-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 8 ft.
.SUN...N wind 25 kt. Seas 7 ft.
.SUN NIGHT...N wind 30 kt. Seas 11 ft.
.MON AND MON NIGHT...N wind 35 kt. Seas 14 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.WED THROUGH THU...E wind 15 kt. Seas 7 ft.

$$

PKZ174-251230-
Nikolski to Seguam Island Pacific Side-
323 PM AKDT Sat Apr 24 2021

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

.TONIGHT...NW wind 20 kt. Seas 9 ft.
.SUN...NW wind 20 kt. Seas 7 ft.
.SUN NIGHT...N wind 30 kt. Seas 9 ft.
.MON AND MON NIGHT...N wind 35 kt. Seas 14 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.WED THROUGH THU...E wind 15 kt. Seas 11 ft.

$$

PKZ175-251230-
Seguam Island to Adak Bering Side-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY SUNDAY AND SUNDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 7 ft.
.SUN...N wind 30 kt. Seas 9 ft.
.SUN NIGHT...N wind 30 kt. Seas 12 ft.
.MON AND MON NIGHT...N wind 35 kt. Seas 13 ft.
.TUE...N wind 30 kt. Seas 11 ft.
.WED THROUGH THU...E wind 20 kt. Seas 7 ft.

$$

PKZ176-251230-
Seguam Island to Adak Pacific Side-
323 PM AKDT Sat Apr 24 2021

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 8 ft.
.SUN...NW wind 30 kt. Seas 8 ft.
.SUN NIGHT...N wind 35 kt. Seas 11 ft.
.MON AND MON NIGHT...NW wind 35 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 9 ft.
.WED THROUGH THU...E wind 20 kt. Seas 13 ft.

$$

PKZ177-251230-
Adak to Kiska-
323 PM AKDT Sat Apr 24 2021

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 6 ft.
.SUN...NW wind 30 kt. Seas 8 ft.
.SUN NIGHT...NW wind 35 kt. Seas 10 ft.
.MON...NW wind 30 kt. Seas 9 ft.
.MON NIGHT...N wind 25 kt. Seas 8 ft.
.TUE...NE wind 25 kt. Seas 7 ft.
.WED...NE wind 25 kt. Seas 14 ft.
.THU...NE wind 20 kt. Seas 12 ft.

$$

PKZ178-251230-
Kiska to Attu-
323 PM AKDT Sat Apr 24 2021

.TONIGHT...N wind 15 kt. Seas 5 ft.
.SUN...NW wind 20 kt. Seas 5 ft.
.SUN NIGHT...NW wind 20 kt. Seas 5 ft.
.MON...W wind 15 kt. Seas 6 ft.
.MON NIGHT...Variable wind 10 kt. Seas 5 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 17 ft.
.THU...N wind 25 kt. Seas 12 ft.

$$

PKZ179-251230-
Pribilof Islands Near Shore Waters-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 8 ft. Rain.
.SUN...NE wind 25 kt. Seas 8 ft.
.SUN NIGHT...N wind 30 kt. Seas 9 ft.
.MON AND MON NIGHT...N wind 30 kt. Seas 10 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.WED THROUGH THU...NE wind 15 kt. Seas 5 ft.

$$

PKZ180-251230-
Kuskokwim Delta and Etolin Strait-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...E wind 30 kt. Seas in ice free waters 7 ft.
.SUN...E wind 30 kt. Seas in ice free waters 8 ft. Rain.
.SUN NIGHT...NE wind 25 kt. Seas in ice free waters 6 ft. Rain.
.MON AND MON NIGHT...N wind 30 kt. Seas in ice free waters 5 ft.
.TUE...N wind 20 kt. Seas in ice free waters 4 ft.
.WED THROUGH THU...N wind 15 kt. Seas in ice free waters 3 ft.

$$

PKZ181-251230-
North and West of Nunivak Island-
323 PM AKDT Sat Apr 24 2021

.TONIGHT...NE wind 20 kt. Seas in ice free waters 2 ft.
.SUN...NE wind 20 kt. Seas in ice free waters 3 ft.
.SUN NIGHT...N wind 20 kt. Seas in ice free waters 3 ft.
.MON AND MON NIGHT...N wind 25 kt. Seas in ice free waters 4 ft.
.TUE...N wind 20 kt. Seas in ice free waters 3 ft.
.WED THROUGH THU...N wind 15 kt. Seas in ice free waters 3 ft.

$$

PKZ185-251230-
Saint Matthew Island Waters-
323 PM AKDT Sat Apr 24 2021

...SMALL CRAFT ADVISORY SUNDAY AND SUNDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas in ice free waters 4 ft.
.SUN...N wind 25 kt. Seas in ice free waters 5 ft.
.SUN NIGHT...N wind 25 kt. Seas in ice free waters 6 ft.
.MON...NW wind 30 kt. Seas in ice free waters 6 ft.
.MON NIGHT...NW wind 25 kt. Seas in ice free waters 5 ft.
.TUE...NW wind 20 kt. Seas in ice free waters 4 ft.
.WED THROUGH THU...N wind 15 kt. Seas in ice free waters 6 ft.

$$
071 
FZAK52 PAFC 251115
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
315 AM AKDT Sun Apr 25 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.

PKZ199-260000-
315 AM AKDT Sun Apr 25 2021

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

Semisopochnoi Volcano, 140 nm West of Adak is currently active.

A 993 mb low 65 nm southwest of Dutch Harbor merges with a 987 mb
low 100 nm south of Chignik for Mon morning. Its front moves over
and south of the Alaska Peninsula through Mon afternoon. High
pressure enters the western Bering Sun night.

$$

PKZ150-260000-
South of the AK Peninsula Sitkinak to Castle Cape-
315 AM AKDT Sun Apr 25 2021

...GALE WARNING TONIGHT...

.TODAY...SE wind 30 kt. Seas 10 ft. Rain.
.TONIGHT...E wind 35 kt. Seas 11 ft. Rain.
.MON...SE wind 30 kt. Seas 10 ft. Rain.
.MON NIGHT...NE wind 25 kt. Seas 8 ft.
.TUE...NE wind 25 kt. Seas 8 ft.
.WED...NE wind 20 kt. Seas 7 ft.
.THU...Variable wind 10 kt. Seas 7 ft.

$$

PKZ155-260000-
South of the AK Peninsula Castle Cape to Cape Sarichef-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...S wind 20 kt. Seas 11 ft. Rain.
.TONIGHT...SE wind 15 kt becoming N after midnight. Seas 8 ft.
.MON...Variable wind 10 kt. Seas 7 ft.
.MON NIGHT...NE wind 20 kt. Seas 7 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.WED...N wind 20 kt. Seas 6 ft.
.THU...Variable wind 10 kt. Seas 7 ft.

$$

PKZ160-260000-
Bristol Bay-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...E wind 30 kt. Seas 6 ft. Rain showers.
.TONIGHT...E wind 30 kt. Seas 5 ft. Rain.
.MON...NE wind 25 kt. Seas 4 ft.
.MON NIGHT...NE wind 20 kt. Seas 3 ft.
.TUE...N wind 15 kt. Seas 1 foot.
.WED...N wind 10 kt. Seas 2 ft.
.THU...W wind 15 kt. Seas 3 ft.

$$

PKZ165-260000-
Port Heiden to Cape Sarichef-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY TODAY AND MONDAY...

.TODAY...E wind 25 kt. Seas 6 ft.
.TONIGHT...E wind 15 kt except E 20 kt from Port Moller E. Seas
5 ft. Rain.
.MON...NE wind 25 kt. Seas 6 ft.
.MON NIGHT...NE wind 25 kt. Seas 7 ft.
.TUE...N wind 20 kt. Seas 7 ft.
.WED THROUGH THU...N wind 15 kt. Seas 4 ft.

$$

PKZ170-260000-
Cape Sarichef to Nikolski Bering Side-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY TONIGHT AND MONDAY...

.TODAY...Variable wind 10 kt. Seas 5 ft.
.TONIGHT...N wind 20 kt increasing to 30 kt after midnight. Seas
7 ft. Rain.
.MON...N wind 30 kt. Seas 12 ft. Rain.
.MON NIGHT...N wind 30 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 11 ft.
.WED THROUGH THU...NE wind 15 kt. Seas 5 ft.

$$

PKZ171-260000-
Unalaska Bay-
315 AM AKDT Sun Apr 25 2021

.TODAY...Variable wind less than 10 kt. Seas 3 ft. Rain.
.TONIGHT...Variable wind less than 10 kt becoming NW 15 kt after
midnight. Seas 3 ft. Rain.
.MON...NW wind 20 kt. Seas 7 ft. Rain.
.MON NIGHT...N wind 25 kt. Seas 10 ft.
.TUE...N wind 20 kt. Seas 7 ft.
.WED...N wind 10 kt. Seas 3 ft.
.THU...Variable wind less than 10 kt. Seas 3 ft.

$$

PKZ172-260000-
Cape Sarichef to Nikolski Pacific Side-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY TODAY AND MONDAY...

.TODAY...S wind 15 kt. Seas 9 ft.
.TONIGHT...Variable wind 10 kt becoming N 20 kt after midnight.
Seas 7 ft.
.MON...N wind 25 kt. Seas 7 ft.
.MON NIGHT...N wind 30 kt. Seas 7 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.WED...N wind 15 kt. Seas 5 ft.
.THU...NE wind 15 kt. Seas 8 ft.

$$

PKZ173-260000-
Nikolski to Seguam Island Bering Side-
315 AM AKDT Sun Apr 25 2021

...GALE WARNING MONDAY...

.TODAY...N wind 20 kt. Seas 7 ft.
.TONIGHT...N wind 30 kt. Seas 11 ft.
.MON...N wind 35 kt. Seas 14 ft.
.MON NIGHT...N wind 35 kt. Seas 14 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.WED THROUGH THU...NE wind 15 kt. Seas 5 ft.

$$

PKZ174-260000-
Nikolski to Seguam Island Pacific Side-
315 AM AKDT Sun Apr 25 2021

...GALE WARNING MONDAY...

.TODAY...NW wind 20 kt. Seas 7 ft.
.TONIGHT...N wind 30 kt. Seas 10 ft.
.MON...N wind 35 kt. Seas 15 ft.
.MON NIGHT...N wind 35 kt. Seas 15 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.WED THROUGH THU...E wind 15 kt. Seas 9 ft.

$$

PKZ175-260000-
Seguam Island to Adak Bering Side-
315 AM AKDT Sun Apr 25 2021

...GALE WARNING MONDAY...

.TODAY...N wind 30 kt. Seas 9 ft. Rain showers.
.TONIGHT...N wind 30 kt. Seas 12 ft.
.MON...NW wind 35 kt. Seas 12 ft.
.MON NIGHT...N wind 35 kt. Seas 13 ft.
.TUE...NE wind 25 kt. Seas 10 ft.
.WED THROUGH THU...NE wind 20 kt. Seas 6 ft.

$$

PKZ176-260000-
Seguam Island to Adak Pacific Side-
315 AM AKDT Sun Apr 25 2021

...GALE WARNING TONIGHT AND MONDAY...

.TODAY...NW wind 30 kt. Seas 8 ft.
.TONIGHT...NW wind 35 kt. Seas 11 ft. Rain showers.
.MON...N wind 35 kt. Seas 11 ft.
.MON NIGHT...N wind 35 kt. Seas 11 ft.
.TUE...NE wind 25 kt. Seas 9 ft.
.WED THROUGH THU...NE wind 20 kt. Seas 13 ft.

$$

PKZ177-260000-
Adak to Kiska-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...NW wind 30 kt. Seas 8 ft.
.TONIGHT...NW wind 30 kt. Seas 10 ft.
.MON...NW wind 25 kt. Seas 9 ft.
.MON NIGHT...N wind 20 kt. Seas 7 ft.
.TUE...E wind 30 kt. Seas 8 ft.
.WED...NE wind 30 kt. Seas 16 ft.
.THU...NE wind 25 kt. Seas 12 ft.

$$

PKZ178-260000-
Kiska to Attu-
315 AM AKDT Sun Apr 25 2021

.TODAY...NW wind 20 kt. Seas 5 ft. Patchy fog.
.TONIGHT...NW wind 20 kt. Seas 5 ft. Patchy fog.
.MON...W wind 15 kt. Seas 5 ft. Patchy fog.
.MON NIGHT...SE wind 20 kt. Seas 5 ft.
.TUE...E wind 35 kt. Seas 19 ft.
.WED...NE wind 35 kt. Seas 20 ft.
.THU...N wind 25 kt. Seas 13 ft.

$$

PKZ179-260000-
Pribilof Islands Near Shore Waters-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...NE wind 25 kt. Seas 8 ft.
.TONIGHT...N wind 30 kt. Seas 9 ft.
.MON...N wind 30 kt. Seas 10 ft.
.MON NIGHT...N wind 30 kt. Seas 10 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.WED...N wind 20 kt. Seas 4 ft.
.THU...NE wind 15 kt. Seas 5 ft.

$$

PKZ180-260000-
Kuskokwim Delta and Etolin Strait-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...E wind 30 kt. Seas in ice free waters 8 ft. Rain.
.TONIGHT...NE wind 25 kt. Seas in ice free waters 6 ft. Rain.
.MON...NE wind 25 kt. Seas in ice free waters 5 ft.
.MON NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.TUE THROUGH WED...NW wind 20 kt. Seas in ice free waters 3 ft.
.THU...NW wind 15 kt. Seas in ice free waters 4 ft.

$$

PKZ181-260000-
North and West of Nunivak Island-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...NE wind 25 kt. Seas in ice free waters 6 ft.
.TONIGHT...N wind 25 kt. Seas in ice free waters 6 ft.
.MON...N wind 25 kt. Seas in ice free waters 7 ft.
.MON NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.TUE THROUGH WED...NW wind 20 kt. Seas in ice free waters 3 ft.
.THU...W wind 15 kt. Seas in ice free waters 2 ft.

$$

PKZ185-260000-
Saint Matthew Island Waters-
315 AM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...N wind 25 kt. Seas in ice free waters 5 ft.
.TONIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.MON...NW wind 25 kt. Seas in ice free waters 5 ft.
.MON NIGHT...NW wind 25 kt. Seas in ice free waters 4 ft.
.TUE...NW wind 20 kt. Seas in ice free waters 3 ft.
.WED THROUGH THU...W wind 15 kt. Seas in ice free waters 6 ft.

$$
654 
FZAK52 PAFC 252338
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
338 PM AKDT Sun Apr 25 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.

PKZ199-261300-
338 PM AKDT Sun Apr 25 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Semisopochnoi Volcano, 140 nm West of Adak is currently active.

A 990 mb low 105 nm southwest of Dutch Harbor merges with a 983 mb 
North Pacific low Mon morning then merges with another North Pacific 
low to form a 980 mb low Tue morning. The low continues moving south.
Its front moves south of the Alaska Peninsula through Tue afternoon.

$$

PKZ150-261300-
South of the AK Peninsula Sitkinak to Castle Cape-
338 PM AKDT Sun Apr 25 2021

...GALE WARNING THROUGH MONDAY...

.TONIGHT...E wind 40 kt. Seas 13 ft. Rain.
.MON...SE wind 35 kt diminishing to 25 kt in the afternoon. Seas 12 ft.
.MON NIGHT...E wind 25 kt. Seas 8 ft.
.TUE AND TUE NIGHT...NE wind 25 kt. Seas 9 ft.
.WED...NE wind 20 kt. Seas 7 ft.
.THU...Variable wind 10 kt. Seas 7 ft.
.FRI...SW wind 15 kt. Seas 7 ft.

$$

PKZ155-261300-
South of the AK Peninsula Castle Cape to Cape Sarichef-
338 PM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TONIGHT...E wind 15 kt except N 25 kt from the Shumagin Islands E.
Seas 8 ft.
.MON...NW wind 20 kt in the morning becoming variable 10 kt. Seas
8 ft.
.MON NIGHT...NE wind 20 kt. Seas 7 ft.
.TUE...NE wind 25 kt. Seas 8 ft.
.TUE NIGHT...NE wind 20 kt. Seas 7 ft.
.WED...N wind 20 kt. Seas 7 ft.
.THU...Variable wind 10 kt. Seas 7 ft.
.FRI...SE wind 15 kt. Seas 8 ft.

$$

PKZ160-261300-
Bristol Bay-
338 PM AKDT Sun Apr 25 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 35 kt. Seas 6 ft. Rain.
.MON...NE wind 30 kt. Seas 5 ft.
.MON NIGHT...E wind 25 kt. Seas 3 ft.
.TUE...NE wind 15 kt. Seas 2 ft.
.TUE NIGHT...NW wind 10 kt. Seas 1 foot.
.WED...W wind 10 kt. Seas 2 ft.
.THU...W wind 15 kt. Seas 3 ft.
.FRI...E wind 15 kt. Seas 2 ft.

$$

PKZ165-261300-
Port Heiden to Cape Sarichef-
338 PM AKDT Sun Apr 25 2021

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

.TONIGHT...E wind 15 kt except E 25 kt from Port Moller E. Seas 5 ft. Rain.
.MON...N wind 25 kt except NE 30 kt from Port Moller E. Seas 8 ft. Rain.
.MON NIGHT...NE wind 30 kt. Seas 9 ft.
.TUE...N wind 20 kt. Seas 7 ft.
.TUE NIGHT...N wind 15 kt. Seas 5 ft.
.WED THROUGH THU...N wind 15 kt. Seas 4 ft.
.FRI...E wind 15 kt. Seas 4 ft.

$$

PKZ170-261300-
Cape Sarichef to Nikolski Bering Side-
338 PM AKDT Sun Apr 25 2021

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

.TONIGHT...NE wind 20 kt becoming N 30 kt after midnight. Seas 6 ft. Rain.
.MON...N wind 35 kt. Seas 14 ft. Rain.
.MON NIGHT...N wind 35 kt. Seas 13 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.TUE NIGHT...NE wind 20 kt. Seas 7 ft.
.WED THROUGH FRI...E wind 15 kt. Seas 5 ft.

$$

PKZ171-261300-
Unalaska Bay-
338 PM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY MONDAY NIGHT...

.TONIGHT...Variable wind less than 10 kt becoming N 15 kt after midnight.
Seas 3 ft. Rain.
.MON...NW wind 20 kt. Seas 7 ft. Rain.
.MON NIGHT...N wind 25 kt. Seas 10 ft. Rain.
.TUE AND TUE NIGHT...N wind 15 kt. Seas 5 ft.
.WED...N wind 10 kt. Seas 3 ft.
.THU...Variable wind less than 10 kt. Seas 3 ft.
.FRI...E wind 10 kt. Seas 2 ft.

$$

PKZ172-261300-
Cape Sarichef to Nikolski Pacific Side-
338 PM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY MONDAY AND MONDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming N 20 kt after midnight. Seas
7 ft.
.MON...N wind 30 kt. Seas 7 ft.
.MON NIGHT...N wind 30 kt. Seas 8 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.TUE NIGHT...N wind 20 kt. Seas 5 ft.
.WED THROUGH FRI...E wind 15 kt. Seas 7 ft.

$$

PKZ173-261300-
Nikolski to Seguam Island Bering Side-
338 PM AKDT Sun Apr 25 2021

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

.TONIGHT...N wind 30 kt. Seas 12 ft.
.MON...N wind 35 kt. Seas 15 ft.
.MON NIGHT...N wind 35 kt. Seas 15 ft.
.TUE...N wind 30 kt. Seas 13 ft.
.TUE NIGHT...NE wind 20 kt. Seas 8 ft.
.WED...NE wind 20 kt. Seas 5 ft.
.THU...NE wind 15 kt. Seas 5 ft.
.FRI...NE wind 20 kt. Seas 5 ft.

$$

PKZ174-261300-
Nikolski to Seguam Island Pacific Side-
338 PM AKDT Sun Apr 25 2021

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

.TONIGHT...N wind 30 kt. Seas 10 ft.
.MON...N wind 40 kt. Seas 16 ft.
.MON NIGHT...N wind 40 kt. Seas 16 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.TUE NIGHT...N wind 20 kt. Seas 8 ft.
.WED THROUGH THU...E wind 15 kt. Seas 9 ft.
.FRI...NE wind 20 kt. Seas 9 ft.

$$

PKZ175-261300-
Seguam Island to Adak Bering Side-
338 PM AKDT Sun Apr 25 2021

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...N wind 35 kt. Seas 12 ft.
.MON...N wind 35 kt. Seas 13 ft.
.MON NIGHT...N wind 35 kt. Seas 12 ft.
.TUE...NE wind 25 kt. Seas 10 ft.
.TUE NIGHT...NE wind 15 kt. Seas 6 ft.
.WED THROUGH THU...NE wind 20 kt. Seas 7 ft.
.FRI...N wind 20 kt. Seas 5 ft.

$$

PKZ176-261300-
Seguam Island to Adak Pacific Side-
338 PM AKDT Sun Apr 25 2021

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...N wind 35 kt. Seas 12 ft.
.MON...N wind 35 kt. Seas 12 ft.
.MON NIGHT...N wind 35 kt. Seas 11 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.TUE NIGHT...NE wind 15 kt. Seas 6 ft.
.WED THROUGH THU...NE wind 20 kt. Seas 13 ft.
.FRI...N wind 20 kt. Seas 8 ft.

$$

PKZ177-261300-
Adak to Kiska-
338 PM AKDT Sun Apr 25 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 10 ft. 
.MON...N wind 30 kt. Seas 10 ft.
.MON NIGHT...N wind 20 kt. Seas 7 ft.
.TUE...E wind 25 kt. Seas 6 ft.
.TUE NIGHT...SE wind 30 kt. Seas 11 ft.
.WED...E wind 30 kt. Seas 16 ft.
.THU...NE wind 25 kt. Seas 12 ft.
.FRI...NW wind 25 kt. Seas 9 ft.

$$

PKZ178-261300-
Kiska to Attu-
338 PM AKDT Sun Apr 25 2021

...SMALL CRAFT ADVISORY MONDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 5 ft.
.MON...Variable wind 15 kt. Seas 5 ft. 
.MON NIGHT...SE wind 15 kt increasing to 25 kt after midnight. Seas 6 ft.
.TUE...SE wind 40 kt. Seas 11 ft.
.TUE NIGHT...E wind 35 kt. Seas 21 ft.
.WED...E wind 35 kt. Seas 20 ft.
.THU...N wind 25 kt. Seas 13 ft.
.FRI...NW wind 25 kt. Seas 9 ft.

$$

PKZ179-261300-
Pribilof Islands Near Shore Waters-
338 PM AKDT Sun Apr 25 2021

...GALE WARNING MONDAY...

.TONIGHT...N wind 30 kt. Seas 9 ft.
.MON...N wind 35 kt. Seas 10 ft.
.MON NIGHT...N wind 30 kt. Seas 10 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.TUE NIGHT...N wind 20 kt. Seas 5 ft.
.WED...N wind 20 kt. Seas 4 ft.
.THU THROUGH FRI...NE wind 15 kt. Seas 5 ft.

$$

PKZ180-261300-
Kuskokwim Delta and Etolin Strait-
338 PM AKDT Sun Apr 25 2021

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

.TONIGHT...NE wind 25 kt. Seas in ice free waters 6 ft. Rain.
.MON...N wind 30 kt. Seas in ice free waters 6 ft.
.MON NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.TUE AND TUE NIGHT...NW wind 20 kt. Seas in ice free waters 4 ft.
.WED...NW wind 20 kt. Seas in ice free waters 3 ft.
.THU...NW wind 15 kt. Seas in ice free waters 4 ft.
.FRI...E wind 10 kt. Seas in ice free waters 2 ft.

$$

PKZ181-261300-
North and West of Nunivak Island-
338 PM AKDT Sun Apr 25 2021

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

.TONIGHT...N wind 25 kt. Seas in ice free waters 2 ft.
.MON...N wind 25 kt. Seas in ice free waters 2 ft.
.MON NIGHT...N wind 25 kt. Seas in ice free waters 2 ft.
.TUE...N wind 20 kt. Seas in ice free waters 2 ft.
.TUE NIGHT...NW wind 15 kt. Seas in ice free waters 2 ft.
.WED...NW wind 20 kt. Seas in ice free waters 2 ft.
.THU...W wind 15 kt. Seas in ice free waters 2 ft.
.FRI...Variable wind 10 kt. Seas in ice free waters 2 ft.

$$

PKZ185-261300-
Saint Matthew Island Waters-
338 PM AKDT Sun Apr 25 2021

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

.TONIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.MON...NW wind 25 kt. Seas in ice free waters 5 ft.
.MON NIGHT...NW wind 25 kt. Seas in ice free waters 4 ft.
.TUE...W wind 20 kt. Seas in ice free waters 3 ft.
.TUE NIGHT...NW wind 15 kt. Seas in ice free waters 3 ft.
.WED...N wind 20 kt. Seas in ice free waters 5 ft.
.THU...W wind 15 kt. Seas in ice free waters 6 ft.
.FRI...NW wind 15 kt. Seas in ice free waters 3 ft.

$$

What forecasters said that day

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

NWS Anchorage, AK wrote its last area forecast discussion before this small craft advisory went out at Apr 19, 4:49 PM AKDT, 11 hours 8 minutes earlier.

Area forecast discussion, Apr 19, 4:49 PM AKDT, 11 hours 8 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
449 PM AKDT Mon Apr 19 2021

.ANALYSIS AND UPPER LEVELS...
A vertically stacked low is tracking westward to the south of
Kodiak Island and the Alaska Peninsula, producing areas of rain
along with high end small craft or gale force winds from Kodiak
Island to the Alaska Peninsula and Eastern Aleutians. While the
low is weakening as it tracks westward, northerlies are
strengthening across the central to eastern Bering Sea as this
storm system pushes up against a strong surface high over the
western Bering Sea. The remnants of an occluded front is lifting
northward across Bristol Bay and to the southern Kenai Peninsula
and north Gulf coast. This is mostly leading to an increasing
clouds, with very little in the way of precipitation. For interior
Southwest Alaska and most of Southcentral Alaska sunshine and
warm temperatures dominate once again.

&&

.MODEL DISCUSSION...
Model are in excellent agreement with large scale features and
forecast confidence generally remains high. All solutions have
trended a bit deeper and strong with the next low tracking south
of the Alaska Peninsula on Wednesday and forecasts have been
modified to reflect that. One of the bigger forecast challenges
today is the arctic trough which dips south across the Alaska
Range Tuesday afternoon, then exits across the Copper River Basin
Tuesday night. Southcentral is at the south end of the trough and
models have not been real consistent with exactly how far south
the trough digs. This will determine areal extent of precipitation
as well as how much arctic air makes it into Southcentral. There
is potential for rain and snow in the Copper River Valley, though
upper wave moves through quickly, so it wouldn't amount to much.

&&

.AVIATION...
PANC...VFR conditions will persist. An upper level trough moving
up from the Gulf will pass by Anchorage tonight. This will help
bend Turnagain Arm winds into the terminal. There is quite a bit
of uncertainty in exactly when this will occur, but the most
likely time period is between 03Z and 07Z. The Turnagain Arm jet
won't be very strong to begin with, so expect some southeasterly
gusts, but it should remain on the low end for these types of
events and the gusts could come in and out of the terminal.
Similarly, on Tuesday the terminal will be on the northern edge
of the Turnagain winds. Generally expect winds to be lighter, but
with daytime heating there is always a chance some gusts could
push into the airport.

&&

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

A vertically stacked low south of Kodiak Island will continue to
send a frontal system northward through the evening hours. High
clouds ahead of this feature will move into the Susitna Valley and
the Copper River Basin later this evening. As this front
continues moving northward, it will have limited moisture to work
with. Therefore, only a few rain/snow showers are expected across
the Eastern Kenai Peninsula to Prince William Sound as well as
Kodiak Island overnight and through Tuesday. Any snow showers will
mainly be confined to the higher terrain in all areas. One big
change this forecast package was to put all rain through Turnagain
Pass as snow levels look to stay between 2,000 ft and 3,000 ft
overnight. Also, as this front continues lifting northward through
the remainder of the day, it will push the Turnagain Arm wind
northward into West Anchorage and the airport with gusts up to 20
mph. These winds are expected to remain through late Tuesday
morning before diminishing and becoming variable. The Knik River
Valley wind is also expected to bring southeast/south winds into
Palmer through Tuesday morning.

Next, an upper level trough currently moving across the North
Slope is expected to move southeastward while digging as it moves
towards the ALCAN border. Some rain/snow showers are possible for
the Copper River Basin and Broad Pass area as this moves through
Tuesday evening/night. Any snow showers are mainly expected across
the Alaska Range, Wrangell Mountains, and the Talkeetna Mountains,
though, some snow may reach the valley floor and give Gulkana some
flakes. Basically, the only thing this upper level feature is
expected to do for the Matanuska Valley and Anchorage Bowl is
bring some increased clouds along with some cooler temperatures
for Tuesday night/Wednesday morning. Most locations are expected
to fall into the mid to upper 20s with low 30s for Anchorage and
the Matanuska Valley.

Wednesday, the Rex block pattern becomes established keeping much
of Southcentral quiet and dry and loads of sunshine. The only
game in town will be a strong gale force low that will send a
front towards Kodiak Island that will bring a decent amount of
rain. Right now it looks like Kodiak City will have a wet
Wednesday with generally 1 to 2 inches of rain expected. With the
pattern in place, there is the potential that this front stalls
over the area which will likely lead to persistent rainfall and,
therefore, heavier totals.

&&

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

A ridge of high pressure is keeping conditions relatively quite
and mostly clear over the Y-K Delta today. Further south, wrap
around moisture on the north side of a vertically stacked low is
streaming from the western Gulf into southern AKPEN. Rain showers
will persist along the AKPEN and coastal Bristol Bay with mountain
snow showers through the rest of today into Tuesday. The main
impact will continue to be gusty, easterly winds blowing through
the gaps and passes of the Alaska Range and across parts of
Bristol Bay. An upper level polar low is expected to move south
from the northern half of the state through the rest of today into
Tuesday with minimal effect.

As the polar low exits eastward, a ridge will dominate through
Wednesday with spring-like weather and fair, mild conditions over
the Y-K Delta. Another North Pacific low with an associated front
is expected to arrive late Tuesday into Wednesday. Much like the
previous storm system, the main impact will be gusty, easterly
winds blowing through the gaps and passes of the Alaska Range and
across parts of Bristol Bay during the forecast period.

&&

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

A westward propagating occluded front associated with a North
Pacific low moving toward the the southern AKPEN will continue
with scattered rain showers and high elevation snow along the
Eastern and Central Aleutians the rest of today through late
Tuesday. Additionally, gusty, easterly winds along the Aleutians
and northerly winds over the Bering will persist as well. As the
low weakens and moves southward, another frontal boundary
associated with a new North Pacific low and is expected to arrive
late Tuesday night into Wednesday. This storm system will have a
deep tropical moisture fetch and will bring widespread coverage of
rain showers along the Aleutians and the Bering with mountain
snow through the end of the forecast period. In addition to the
precipitation, expect periods of gusty, easterly winds much across
the forecast area on the backside of the low through the usual
gaps and passes and much across the Bering Sea.

&&

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

Confidence remains high that another North Pacific low will move
just south of the Aleutian Chain Thursday. Easterly gale force
winds will accompany this low, though confidence is moderate that
south of the Aleutian Chain may experience low end easterly storm
force winds. That low will weaken through Saturday as another low
end gale force weather front moves in from the north pacific into
Sunday.

&&

.Long Term Forecast (Days 4 through 7: Friday through Monday)...

The block(y) pattern will continue into the longterm. The main
upper level ridge that rests across much of Alaska (and is
anchored across the northern half of the state) will be a
mainstay. As one north pacific low weakens on Saturday, another
builds in from the west. The blocking ridge will prevent most of
the mainland from being impacted by weather, though the Aleutian
Chain will be stuck the pattern of system after system. Much of
south central will benefit from the spring sunshine. Daytime
temperatures should be well above normal for this time of year
(mid to upper 40s) though overnight lows will be close to normal
(low 30s) when skies clear out. If we have a layer of clouds (even
thin), it will act like a cozy blanket, keeping overnight lows
elevated.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Heavy Freezing Spray 185
         Gale Warning 138 150 155 165 174 176 179 180 181 185 412-414.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...SEB
SOUTHCENTRAL ALASKA...MV
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MF
MARINE/LONG TERM...SS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 3:55 AM AKDTGale WarningAFC36 hr
Apr 20, 3:57 AM AKDTGale WarningAFC36 hr
Apr 20, 11:40 AM AKDTAreal Flood AdvisoryAFC11 hr
Apr 20, 3:43 PM AKDTGale WarningAFC24 hr
Apr 20, 3:54 PM AKDTGale WarningAFC48 hr
Apr 20, 3:54 PM AKDTSmall Craft AdvisoryAFC48 hr

Nearby

Small Craft Advisories in Alaska, 2021Every small craft advisory in 2021

Sources

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