Alert archive / Alaska / Small Craft Advisories in 2021

Small Craft Advisory 338, NWS Anchorage, AK

April 25, 2021

NWS Anchorage, AK issued this small craft advisory at Apr 25, 2021, 3:15 AM AKDT. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued
Apr 25, 2021, 3:15 AM AKDT (11:15 UTC)
Expired
Apr 27, 2021, 3:15 AM AKDT
In force
48 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

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.

$$
4 follow-up statements
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.

$$
946 
FZAK52 PAFC 261156
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
356 AM AKDT Mon Apr 26 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.

PKZ199-270100-
356 AM AKDT Mon Apr 26 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 front off a North Pacific low lingers in the eastern Bering
through Tue. A 977 mb low moves to 390 nm southwest of Shemya on
Wed afternoon. Its front enters the western Bering Tue afternoon.

$$

PKZ150-270100-
South of the AK Peninsula Sitkinak to Castle Cape-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt diminishing to 25 kt in the afternoon. Seas
13 ft.
.TONIGHT...NE wind 25 kt. Seas 8 ft.
.TUE...NE wind 25 kt. Seas 9 ft.
.TUE NIGHT...NE wind 25 kt. Seas 9 ft.
.WED...NE wind 20 kt. Seas 7 ft.
.THU...NW wind 15 kt. Seas 5 ft.
.FRI...W wind 15 kt. Seas 6 ft.

$$

PKZ155-270100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TODAY AND TUESDAY...

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

$$

PKZ160-270100-
Bristol Bay-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 30 kt. Seas 7 ft.
.TONIGHT...NE wind 20 kt. Seas 4 ft.
.TUE...NE wind 15 kt. Seas 2 ft.
.TUE NIGHT...N wind 15 kt. Seas 2 foot.
.WED...NW wind 10 kt. Seas 2 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 2 ft.

$$

PKZ165-270100-
Port Heiden to Cape Sarichef-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NE wind 30 kt. Seas 12 ft. Rain.
.TONIGHT...NE wind 30 kt diminishing to 20 kt after midnight. Seas 
11 ft.
.TUE...N wind 20 kt. Seas 6 ft.
.TUE NIGHT...N wind 20 kt. Seas 5 ft.
.WED THROUGH FRI...N wind 15 kt. Seas 5 ft.

$$

PKZ170-270100-
Cape Sarichef to Nikolski Bering Side-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 35 kt. Seas 13 ft. Rain.
.TONIGHT...N wind 35 kt. Seas 13 ft.
.TUE...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
11 ft.
.TUE NIGHT...N wind 20 kt. Seas 7 ft.
.WED THROUGH FRI...NE wind 15 kt. Seas 6 ft.

$$

PKZ171-270100-
Unalaska Bay-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 25 kt. Seas 5 ft building to 10 ft in the
afternoon. Rain.
.TONIGHT...N wind 25 kt. Seas 10 ft. Rain.
.TUE...N wind 15 kt. Seas 5 ft.
.TUE NIGHT...N wind 15 kt. Seas 5 ft.
.WED THROUGH FRI...E wind 10 kt. Seas 3 ft.

$$

PKZ172-270100-
Cape Sarichef to Nikolski Pacific Side-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING TONIGHT...

.TODAY...N wind 30 kt. Seas 7 ft.
.TONIGHT...N wind 35 kt diminishing to 25 kt after midnight. Seas 9 
ft.
.TUE...N wind 25 kt. Seas 7 ft.
.TUE NIGHT...N wind 20 kt. Seas 6 ft.
.WED...N wind 15 kt. Seas 7 ft.
.THU...Variable wind 10 kt. Seas 8 ft.
.FRI...E wind 15 kt. Seas 8 ft.

$$

PKZ173-270100-
Nikolski to Seguam Island Bering Side-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 35 kt. Seas 15 ft.
.TONIGHT...N wind 35 kt. Seas 14 ft.
.TUE...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
13 ft.
.TUE NIGHT...NE wind 20 kt. Seas 7 ft.
.WED THROUGH FRI...NE wind 15 kt. Seas 6 ft.

$$

PKZ174-270100-
Nikolski to Seguam Island Pacific Side-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 40 kt. Seas 16 ft.
.TONIGHT...N wind 35 kt. Seas 15 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.TUE NIGHT...N wind 20 kt. Seas 7 ft.
.WED...Variable wind 10 kt. Seas 10 ft.
.THU THROUGH FRI...E wind 15 kt. Seas 9 ft.

$$

PKZ175-270100-
Seguam Island to Adak Bering Side-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING TODAY...

.TODAY...N wind 35 kt. Seas 14 ft.
.TONIGHT...N wind 30 kt. Seas 13 ft.
.TUE...N wind 25 kt. Seas 10 ft.
.TUE NIGHT...NE wind 15 kt. Seas 7 ft.
.WED THROUGH FRI...NE wind 20 kt. Seas 7 ft.

$$

PKZ176-270100-
Seguam Island to Adak Pacific Side-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 35 kt. Seas 13 ft.
.TONIGHT...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...E wind 20 kt. Seas 13 ft.
.FRI...NE wind 15 kt. Seas 8 ft.

$$

PKZ177-270100-
Adak to Kiska-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 30 kt diminishing to 20 kt in the afternoon. Seas 10
ft.
.TONIGHT...N wind 20 kt. Seas 7 ft.
.TUE...E wind 20 kt. Seas 6 ft.
.TUE NIGHT...E wind 25 kt. Seas 11 ft.
.WED THROUGH THU...NE wind 25 kt. Seas 15 ft.
.FRI...N wind 20 kt. Seas 8 ft.

$$

PKZ178-270100-
Kiska to Attu-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING TUESDAY...

.TODAY...W wind 15 kt becoming variable 10 kt in the afternoon. Seas
5 ft.
.TONIGHT...SE wind 15 kt increasing to 25 kt after midnight. Seas
6 ft.
.TUE...SE wind 35 kt. Seas 12 ft.
.TUE NIGHT...E wind 35 kt. Seas 20 ft.
.WED...E wind 30 kt. Seas 19 ft.
.THU...NE wind 30 kt. Seas 13 ft.
.FRI...N wind 20 kt. Seas 9 ft.

$$

PKZ179-270100-
Pribilof Islands Near Shore Waters-
356 AM AKDT Mon Apr 26 2021

...GALE WARNING TODAY...

.TODAY...N wind 35 kt. Seas 10 ft.
.TONIGHT...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 THROUGH THU...NE wind 20 kt. Seas 6 ft.
.FRI...NE wind 15 kt. Seas 5 ft.

$$

PKZ180-270100-
Kuskokwim Delta and Etolin Strait-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt. Seas in ice free waters 10 ft.
.TONIGHT...N wind 25 kt. Seas in ice free waters 7 ft.
.TUE...N wind 20 kt. Seas in ice free waters 4 ft.
.TUE NIGHT...N wind 15 kt. Seas in ice free waters 3 ft.
.WED THROUGH THU...NW wind 20 kt. Seas in ice free waters 4 ft.
.FRI...NW wind 15 kt. Seas in ice free waters 3 ft.

$$

PKZ181-270100-
North and West of Nunivak Island-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

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

$$

PKZ185-270100-
Saint Matthew Island Waters-
356 AM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 25 kt. Seas 6 ft.
.TONIGHT...NW wind 25 kt. Seas 4 ft.
.TUE...N wind 20 kt E of Saint Matthew Island...W 15 kt W of Saint
Matthew Island. Seas 3 ft.
.TUE NIGHT...NW wind 15 kt. Seas 3 ft.
.WED...N wind 20 kt. Seas 6 ft.
.THU...NW wind 15 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 4 ft.

$$
150 
FZAK52 PAFC 262333
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
333 PM AKDT Mon Apr 26 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.

PKZ199-271245-
333 PM AKDT Mon Apr 26 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 987 mb North Pacific low moves east for Wed afternoon. Its 
front decays over Southwest Alaska by Wed afternoon. High pressure
crosses the Bering through Wed afternoon. A 945 mb North Pacific 
low Mon night moves to 380 nm South of Attu at 978 mb for Wed 
afternoon. Its front moves over the Western Aleutians Wed 
afternoon.


$$

PKZ150-271245-
South of the AK Peninsula Sitkinak to Castle Cape-
333 PM AKDT Mon Apr 26 2021

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

.TONIGHT...NE wind 25 kt. Seas 8 ft.
.TUE...NE wind 25 kt. Seas 9 ft.
.TUE NIGHT...NE wind 25 kt. Seas 9 ft.
.WED...NE wind 20 kt. Seas 8 ft.
.WED NIGHT...NE wind 15 kt. Seas 6 ft.
.THU THROUGH FRI...W wind 15 kt. Seas 6 ft.
.SAT...SE wind 15 kt. Seas 6 ft.

$$

PKZ155-271245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TUESDAY AND TUESDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 7 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.TUE NIGHT...NE wind 25 kt. Seas 8 ft.
.WED...N wind 20 kt. Seas 8 ft.
.WED NIGHT...N wind 15 kt. Seas 6 ft.
.THU...N wind 15 kt. Seas 7 ft.
.FRI...Variable wind 10 kt. Seas 7 ft.
.SAT...E wind 15 kt. Seas 6 ft.

$$

PKZ160-271245-
Bristol Bay-
333 PM AKDT Mon Apr 26 2021

.TONIGHT...NE wind 20 kt. Seas 4 ft.
.TUE...NE wind 15 kt. Seas 3 ft.
.TUE NIGHT...N wind 15 kt. Seas 2 ft.
.WED...N wind 10 kt. Seas 2 ft.
.WED NIGHT...W wind 10 kt. Seas 2 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 3 ft.
.SAT...NE wind 10 kt. Seas 2 ft.

$$

PKZ165-271245-
Port Heiden to Cape Sarichef-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 30 kt. Seas 11 ft.
.TUE...N wind 20 kt. Seas 7 ft.
.TUE NIGHT...N wind 20 kt. Seas 5 ft.
.WED AND WED NIGHT...N wind 15 kt. Seas 4 ft.
.THU...N wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...NE wind 15 kt. Seas 4 ft.

$$

PKZ170-271245-
Cape Sarichef to Nikolski Bering Side-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...N wind 30 kt. Seas 13 ft.
.TUE...N wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 11 ft.
.TUE NIGHT...N wind 20 kt. Seas 7 ft.
.WED AND WED NIGHT...NE wind 15 kt. Seas 5 ft.
.THU...NE wind 20 kt. Seas 6 ft.
.FRI THROUGH SAT...NE wind 15 kt. Seas 5 ft.

$$

PKZ171-271245-
Unalaska Bay-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 30 kt. Seas 12 ft.
.TUE...N wind 20 kt. Seas 7 ft.
.TUE NIGHT...N wind 15 kt diminishing to 10 kt after midnight.
Seas 5 ft subsiding to 3 ft after midnight.
.WED AND WED NIGHT...N wind 10 kt. Seas 3 ft.
.THU...NE wind 15 kt. Seas 3 ft.
.FRI THROUGH SAT...NE wind 10 kt. Seas 3 ft.

$$

PKZ172-271245-
Cape Sarichef to Nikolski Pacific Side-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...N wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.TUE NIGHT...N wind 20 kt. Seas 6 ft.
.WED...N wind 15 kt. Seas 5 ft.
.WED NIGHT...Variable wind 10 kt. Seas 7 ft.
.THU...Variable wind 10 kt. Seas 8 ft.
.FRI THROUGH SAT...NE wind 15 kt. Seas 7 ft.

$$

PKZ173-271245-
Nikolski to Seguam Island Bering Side-
333 PM AKDT Mon Apr 26 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 14 ft.
.TUE...N wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 13 ft.
.TUE NIGHT...NE wind 20 kt. Seas 8 ft.
.WED AND WED NIGHT...NE wind 15 kt. Seas 5 ft.
.THU THROUGH FRI...NE wind 15 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 5 ft.

$$

PKZ174-271245-
Nikolski to Seguam Island Pacific Side-
333 PM AKDT Mon Apr 26 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 15 ft.
.TUE...N wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 12 ft.
.TUE NIGHT...N wind 20 kt. Seas 7 ft.
.WED AND WED NIGHT...Variable wind 10 kt. Seas 9 ft.
.THU THROUGH FRI...E wind 15 kt. Seas 9 ft.
.SAT...N wind 20 kt. Seas 6 ft.

$$

PKZ175-271245-
Seguam Island to Adak Bering Side-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...N wind 30 kt. Seas 13 ft.
.TUE...N wind 25 kt. Seas 10 ft.
.TUE NIGHT...NE wind 15 kt. Seas 7 ft.
.WED AND WED NIGHT...E wind 20 kt. Seas 7 ft.
.THU THROUGH FRI...NE wind 20 kt. Seas 6 ft.
.SAT...NW wind 15 kt. Seas 5 ft.

$$

PKZ176-271245-
Seguam Island to Adak Pacific Side-
333 PM AKDT Mon Apr 26 2021

...GALE WARNING TONIGHT...

.TONIGHT...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 AND WED NIGHT...E wind 15 kt. Seas 13 ft.
.THU...E wind 20 kt. Seas 12 ft.
.FRI...NE wind 15 kt. Seas 8 ft.
.SAT...NW wind 15 kt. Seas 7 ft.

$$

PKZ177-271245-
Adak to Kiska-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TUESDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 7 ft.
.TUE...E wind 20 kt. Seas 6 ft.
.TUE NIGHT...E wind 25 kt. Seas 6 ft building to 11 ft 
after midnight.
.WED AND WED NIGHT...E wind 25 kt. Seas 15 ft.
.THU...NE wind 20 kt. Seas 13 ft.
.FRI...N wind 20 kt. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 6 ft.

$$

PKZ178-271245-
Kiska to Attu-
333 PM AKDT Mon Apr 26 2021

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

.TONIGHT...SE wind 15 kt increasing to 25 kt after midnight. 
Seas 6 ft.
.TUE...SE wind 35 kt. Seas 8 ft building to 13 ft in the
afternoon. Rain.
.TUE NIGHT...E wind 35 kt. Seas 17 ft Bering side...21 ft 
Pacific side. Rain.
.WED AND WED NIGHT...NE wind 30 kt. Seas 18 ft.
.THU...NE wind 25 kt. Seas 13 ft.
.FRI...N wind 20 kt. Seas 9 ft.
.SAT...NW wind 15 kt. Seas 5 ft.

$$

PKZ179-271245-
Pribilof Islands Near Shore Waters-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...N wind 30 kt. Seas 11 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.TUE NIGHT...N wind 20 kt. Seas 5 ft.
.WED...N wind 15 kt. Seas 4 ft.
.WED NIGHT...NE wind 20 kt. Seas 6 ft.
.THU...NE wind 20 kt. Seas 6 ft.
.FRI THROUGH SAT...NE wind 15 kt. Seas 4 ft.

$$

PKZ180-271245-
Kuskokwim Delta and Etolin Strait-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TONIGHT...

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

$$

PKZ181-271245-
North and West of Nunivak Island-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.TUE...N wind 25 kt. Seas in ice free waters 4 ft.
.TUE NIGHT...N wind 20 kt. Seas in ice free waters 3 ft.
.WED AND WED NIGHT...N wind 20 kt. Seas in ice free waters 2 ft.
.THU...NW wind 20 kt. Seas in ice free waters 2 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas in ice free waters 1 foot.

$$

PKZ185-271245-
Saint Matthew Island Waters-
333 PM AKDT Mon Apr 26 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 25 kt. Seas 4 ft.
.TUE...N wind 20 kt E of Saint Matthew Island...W 15 kt 
W of Saint Matthew Island. Seas 3 ft.
.TUE NIGHT...NW wind 15 kt. Seas 3 ft.
.WED AND WED NIGHT...N wind 20 kt. Seas 5 ft.
.THU...NW wind 15 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 4 ft.
.SAT...N wind 15 kt. Seas 3 ft.

$$
457 
FZAK52 PAFC 271115
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
315 AM AKDT Tue Apr 27 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.

PKZ199-280000-
315 AM AKDT Tue Apr 27 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

High pressure crosses the Bering through Wed night. A 976 mb low
is 400 nm southwest of Shemya on Wed. Its front moves across the
western Bering through Wed night. 

$$

PKZ150-280000-
South of the AK Peninsula Sitkinak to Castle Cape-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NE wind 25 kt. Seas 9 ft.
.TONIGHT...NE wind 25 kt. Seas 9 ft.
.WED...NE wind 25 kt diminishing to 15 kt in the afternoon. Seas
8 ft.
.WED NIGHT...Variable wind 10 kt. Seas 5 ft.
.THU THROUGH FRI...W wind 25 kt. Seas 7 ft.
.SAT...SE wind 15 kt. Seas 6 ft.

$$

PKZ155-280000-
South of the AK Peninsula Castle Cape to Cape Sarichef-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 25 kt. Seas 9 ft.
.TONIGHT...NE wind 25 kt. Seas 9 ft.
.WED...N wind 25 kt. Seas 8 ft.
.WED NIGHT...N wind 15 kt. Seas 6 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 8 ft.
.SAT...E wind 15 kt. Seas 7 ft.

$$

PKZ160-280000-
Bristol Bay-
315 AM AKDT Tue Apr 27 2021

.TODAY...NE wind 20 kt. Seas 3 ft.
.TONIGHT...N wind 15 kt. Seas 2 ft.
.WED...NE wind 10 kt. Seas 2 ft.
.WED NIGHT...W wind 15 kt. Seas 2 foot.
.THU THROUGH FRI...W wind 20 kt. Seas 3 ft.
.SAT...E wind 15 kt. Seas 2 ft.

$$

PKZ165-280000-
Port Heiden to Cape Sarichef-
315 AM AKDT Tue Apr 27 2021

.TODAY...N wind 20 kt. Seas 7 ft.
.TONIGHT...N wind 20 kt. Seas 6 ft.
.WED...NE wind 15 kt. Seas 4 ft.
.WED NIGHT...N wind 15 kt. Seas 4 ft.
.THU...N wind 20 kt. Seas 7 ft.
.FRI...N wind 15 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 3 ft.

$$

PKZ170-280000-
Cape Sarichef to Nikolski Bering Side-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
11 ft subsiding to 8 ft in the afternoon.
.TONIGHT...N wind 20 kt. Seas 7 ft.
.WED...NE wind 15 kt. Seas 5 ft.
.WED NIGHT...NE wind 15 kt. Seas 5 ft.
.THU...NE wind 20 kt. Seas 6 ft.
.FRI...E wind 15 kt. Seas 5 ft.
.SAT...N wind 20 kt. Seas 5 ft.

$$

PKZ171-280000-
Unalaska Bay-
315 AM AKDT Tue Apr 27 2021

.TODAY...N wind 20 kt. Seas 7 ft.
.TONIGHT...N wind 15 kt diminishing to 10 kt after midnight. Seas
5 ft subsiding to 3 ft after midnight.
.WED...N wind 10 kt. Seas 3 ft.
.WED NIGHT...N wind 10 kt. Seas 3 ft.
.THU...NE wind 15 kt. Seas 5 ft.
.FRI...E wind 10 kt. Seas 3 ft.
.SAT...NE wind 15 kt. Seas 2 ft.

$$

PKZ172-280000-
Cape Sarichef to Nikolski Pacific Side-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY TODAY...

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

$$

PKZ173-280000-
Nikolski to Seguam Island Bering Side-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
12 ft.
.TONIGHT...NE wind 20 kt. Seas 8 ft.
.WED...NE wind 15 kt. Seas 5 ft.
.WED NIGHT...NE wind 15 kt. Seas 5 ft.
.THU THROUGH FRI...E wind 15 kt. Seas 6 ft.
.SAT...NW wind 20 kt. Seas 6 ft.

$$

PKZ174-280000-
Nikolski to Seguam Island Pacific Side-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
12 ft.
.TONIGHT...N wind 20 kt. Seas 8 ft.
.WED...E wind 10 kt. Seas 6 ft.
.WED NIGHT...Variable wind 10 kt. Seas 11 ft.
.THU THROUGH FRI...E wind 15 kt. Seas 9 ft.
.SAT...N wind 20 kt. Seas 7 ft.

$$

PKZ175-280000-
Seguam Island to Adak Bering Side-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Seas 10 ft.
.TONIGHT...NE wind 15 kt. Seas 7 ft.
.WED...E wind 15 kt. Seas 6 ft.
.WED NIGHT...E wind 20 kt. Seas 6 ft.
.THU THROUGH FRI...NE wind 20 kt. Seas 6 ft.
.SAT...NW wind 15 kt. Seas 7 ft.

$$

PKZ176-280000-
Seguam Island to Adak Pacific Side-
315 AM AKDT Tue Apr 27 2021

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

.TODAY...N wind 30 kt becoming NE 20 kt in the afternoon. Seas 9
ft.
.TONIGHT...NE wind 15 kt. Seas 6 ft.
.WED...E wind 15 kt. Seas 11 ft.
.WED NIGHT...E wind 20 kt. Seas 12 ft.
.THU...E wind 20 kt. Seas 12 ft.
.FRI...NE wind 15 kt. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 7 ft.

$$

PKZ177-280000-
Adak to Kiska-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY TONIGHT AND WEDNESDAY...

.TODAY...E wind 20 kt. Seas 7 ft.
.TONIGHT...E wind 25 kt. Seas 6 ft building to 11 ft after
midnight.
.WED...E wind 25 kt. Seas 15 ft.
.WED NIGHT...E wind 25 kt. Seas 14 ft.
.THU...E wind 25 kt. Seas 11 ft.
.FRI...N wind 20 kt. Seas 8 ft.
.SAT...NW wind 15 kt. Seas 5 ft.

$$

PKZ178-280000-
Kiska to Attu-
315 AM AKDT Tue Apr 27 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 40 kt. Seas 12 ft. Rain.
.TONIGHT...E wind 35 kt. Seas 19 ft. Rain.
.WED...E wind 30 kt. Seas 19 ft.
.WED NIGHT...E wind 30 kt. Seas 15 ft.
.THU...NE wind 25 kt. Seas 11 ft.
.FRI...N wind 20 kt. Seas 8 ft.
.SAT...NW wind 15 kt. Seas 5 ft.

$$

PKZ179-280000-
Pribilof Islands Near Shore Waters-
315 AM AKDT Tue Apr 27 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Seas 8 ft.
.TONIGHT...N wind 20 kt. Seas 5 ft.
.WED...N wind 20 kt. Seas 4 ft.
.WED NIGHT...NE wind 20 kt. Seas 7 ft.
.THU...NE wind 20 kt. Seas 7 ft.
.FRI...Variable wind 10 kt. Seas 3 ft.
.SAT...W wind 15 kt. Seas 2 ft.

$$

PKZ180-280000-
Kuskokwim Delta and Etolin Strait-
315 AM AKDT Tue Apr 27 2021

.TODAY...N wind 20 kt. Seas in ice free waters 4 ft.
.TONIGHT...N wind 20 kt. Seas in ice free waters 3 ft.
.WED...N wind 20 kt. Seas in ice free waters 3 ft.
.WED NIGHT...N wind 25 kt. Seas in ice free waters 4 ft.
.THU...NW wind 25 kt. Seas in ice free waters 5 ft.
.FRI...W wind 20 kt. Seas in ice free waters 3 ft.
.SAT...E wind 10 kt. Seas in ice free waters 2 ft.

$$

PKZ181-280000-
North and West of Nunivak Island-
315 AM AKDT Tue Apr 27 2021

.TODAY...N wind 20 kt. Seas in ice free waters 4 ft.
.TONIGHT...N wind 20 kt. Seas in ice free waters 3 ft.
.WED...N wind 20 kt. Seas in ice free waters 3 ft.
.WED NIGHT...N wind 25 kt. Seas in ice free waters 2 ft.
.THU...NW wind 20 kt. Seas in ice free waters 3 ft.
.FRI...W wind 15 kt. Seas in ice free waters 2 ft.
.SAT...Variable wind 10 kt. Seas in ice free waters 1 foot.

$$

PKZ185-280000-
Saint Matthew Island Waters-
315 AM AKDT Tue Apr 27 2021

.TODAY...N wind 20 kt E of Saint Matthew Island...W 15 kt W of
Saint Matthew Island. Seas 4 ft.
.TONIGHT...NW wind 15 kt. Seas 3 ft.
.WED...N wind 20 kt. Seas 4 ft.
.WED NIGHT...N wind 20 kt. Seas 6 ft.
.THU THROUGH FRI...W wind 15 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 4 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 24, 4:11 PM AKDT, 11 hours 4 minutes earlier.

Area forecast discussion, Apr 24, 4:11 PM AKDT, 11 hours 4 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
411 PM AKDT Sat Apr 24 2021

.ANALYSIS AND UPPER LEVELS...
The blocking high pressure aloft continues to sit over the central
portion of the state, but stretches southward into the Gulf and
northward into the Chukchi Sea. Low pressure encompasses the
Bering Sea with two centers, one over the western Bering Sea
while a stronger disturbance is moving into the eastern Bering
today. The previous front the last couple of days is decaying over
the southwestern mainland while the next is approaching from the
Bering Sea.

Clear sky continues over the southcentral mainland underneath the
blocking high while some low level clouds are lingering over the
southwest.

&&

.MODEL DISCUSSION...
Good model agreement exists with the evolution of the Bering Sea
system sliding into the northeast Pacific/Gulf of Alaska. There's
also great agreement in lingering the high pressure over the
mainland, transitioning to weak low pressure (no major
consolidated systems).

&&

.AVIATION...
PANC...VFR conditions and light winds will persist.

&&

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

The ridge over Southcentral will remain firmly entrenched through
early next week. This will keep warm and dry conditions in the
forecast for much of the region. Besides this, a front associated
with a low over the Aleutians is approaching Kodiak Island. This
will continue the showery pattern from tomorrow afternoon through
the remainder of the forecast period.

&&

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

Weak embedded shortwaves coupled with moist, southeasterly flow
aloft will keep isolated rain showers ongoing today near the Y-K
Delta coast. Meanwhile, a ridge of high pressure aloft and weak
offshore flow will keep mostly clear skies and dry conditions
over the Lower and Middle Kuskokwim Valleys. A North Pacific low
circulating south of the Aleutians with an associated front will
keep rain showers ongoing across the coastal Southwest late
tonight into Sunday. As the low weakens, another North Pacific low
with a deep fetch of tropical moisture will arrive by late Sunday
night into Monday with continued rainfall over the coastal areas
of Bristol Bay and the Kuskokwim Delta. A deep moisture feed
combined with orographic enhancement will enhance rainfall along
the AKPEN. Additionally, expect gusty, easterly winds funneling
through the gaps and passes of the Alaska Range and across parts
of Bristol Bay during the forecast period. Conditions are expected
to improve by late Monday into Tuesday with a ridge of high
pressure aloft building over the Mainland.

&&

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

A North Pacific low south of Dutch Harbor with an associated
frontal boundary will keep rain showers continuing along the
Central and Eastern Aleutians, with some spreading northward near
the Pribilofs through Monday. Another North Pacific low with a
deep moisture fetch will add higher rainfall amounts along the
Eastern Aleutians by Monday. Expect continued elevated seas at
times with gusty, southeasterly to easterly winds funneling
through the usual gaps and passes along the Aleutian Chain, and
gusty, easterly to northeasterly winds over the Bering Sea.
Meanwhile, weak embedded shortwaves and moist, cyclonic flow
aloft rotating within a broad circulation pattern over the entire
Bering will keep isolated showers and windy conditions over the
Western and Central Aleutians through the forecast period. A ridge
of high pressure will build across the Bering late Monday into
Tuesday, shifting the storm activity south of the Aleutians and
providing fair, mild conditions.

&&

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

The primary focus for marine weather in this time period is a
really deep low over the northwest Pacific. While the low itself
will remain over the Pacific, the leading frontal boundary will
approach the Aleutian chain Tuesday, then stall to the south
Wednesday through Thursday. There is potential for gale force
winds as the front first arrives, but the system will be in a
state of weakening, so winds will slowly diminish Wednesday
through Thursday. Elsewhere across the forecast area, expect
winds less than 35 kts.

&&

.LONG TERM FORECAST (Days 4 through 7/Wednesday through Saturday)...

The blocking high over mainland Alaska will gradually erode
during this time period, being replaced by a broad upper trough
that is centered over the Bering Strait region. The main change
for sensible weather will be a colder air mass, bringing
temperatures closer to normal for this time of year, or even
slightly below normal. As we progress through next week some
cloud cover looks to return while we remain seasonably dry.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Ice Jam Flood Warning 121 (Anchor River).
MARINE...Gale Warning 132 138 150 176 177.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...MTL
SOUTHCENTRAL ALASKA...CK
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MF
MARINE/LONG TERM...MK/SB/MTL

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 2:21 AM AKDTSmall Craft AdvisoryAFC3 days
Apr 25, 3:13 AM AKDTGale WarningAFC36 hr
Apr 25, 3:15 AM AKDTGale WarningAFC48 hr
Apr 25, 3:23 PM AKDTSmall Craft AdvisoryAFC24 hr
Apr 25, 3:38 PM AKDTGale WarningAFC24 hr
Apr 25, 3:38 PM AKDTSmall Craft AdvisoryAFC36 hr
Apr 25, 3:39 PM AKDTGale WarningAFC24 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.