Alert archive / Alaska / Small Craft Advisories in 2021

Small Craft Advisory 313, NWS Anchorage, AK

April 17, 2021

NWS Anchorage, AK issued this small craft advisory at Apr 17, 2021, 7:11 AM AKDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Apr 17, 2021, 7:11 AM AKDT (15:11 UTC)
Expired: Apr 18, 2021, 3:43 AM AKDT
In force: 21 hr
Issued by: NWS Anchorage, AK

The text

As transmitted.

349 
FZAK52 PAFC 171511 AAA
CWFALU

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
711 AM AKDT Sat Apr 17 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.

PKZ199-180315-
711 AM AKDT Sat Apr 17 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 1005 mb low 450 nm west of St Matthew Island moves to 300 nm 
west of St Matthew Island at 1020 mb Sun morning and dissipates. 
Its front moves eastward then stalls over the Central Aleutians and 
central Bering through Sunday morning and weakens. A trough from the 
North Pacific enters the eastern Bering Sat night and drifts westward
through Pribilof Islands through Sun afternoon.

$$

PKZ150-180315-
South of the AK Peninsula Sitkinak to Castle Cape-
711 AM AKDT Sat Apr 17 2021

...GALE WARNING SUNDAY...

.TODAY...E wind 25 kt. Seas 7 ft. 
.TONIGHT...NE wind 25 kt. Seas 9 ft. Rain. 
.SUN...NE wind 35 kt. Seas 11 ft. 
.SUN NIGHT...NE wind 40 kt. Seas 13 ft. 
.MON THROUGH WED...E wind 30 kt. Seas 13 ft.

$$

PKZ155-180315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
711 AM AKDT Sat Apr 17 2021

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

.TODAY...NE wind 20 kt. Seas 5 ft. 
.TONIGHT...N wind 20 kt except NE 25 kt from the Shumagin Islands
E. Seas 6 ft. 
.SUN...NE wind 30 kt. Seas 7 ft. 
.SUN NIGHT...NE wind 35 kt. Seas 10 ft. 
.MON THROUGH WED...E wind 30 kt. Seas 15 ft.

$$

PKZ160-180315-
Bristol Bay-
711 AM AKDT Sat Apr 17 2021

.TODAY...NE wind 20 kt. Seas in ice free waters 3 ft. 
.TONIGHT...NE wind 15 kt. Seas in ice free waters 3 ft. 
.SUN...NE wind 20 kt. Seas in ice free waters 3 ft. 
.SUN NIGHT...NE wind 35 kt. Seas in ice free waters 5 ft. 
.MON...NE wind 30 kt. Seas in ice free waters 5 ft. 
.TUE...NE wind 25 kt. Seas in ice free waters 4 ft. 
.WED...NE wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ165-180315-
Port Heiden to Cape Sarichef-
711 AM AKDT Sat Apr 17 2021

.TODAY...NE wind 20 kt. Seas 5 ft. 
.TONIGHT...NE wind 20 kt. Seas 5 ft. 
.SUN...NE wind 20 kt. Seas 5 ft. 
.SUN NIGHT...NE wind 30 kt. Seas 7 ft. 
.MON...NE wind 25 kt. Seas 8 ft. 
.TUE THROUGH WED...NE wind 30 kt. Seas 11 ft.

$$

PKZ170-180315-
Cape Sarichef to Nikolski Bering Side-
711 AM AKDT Sat Apr 17 2021

.TODAY...Variable wind 10 kt. Seas 5 ft. 
.TONIGHT...N wind 15 kt. Seas 4 ft. 
.SUN...N wind 20 kt. Seas 5 ft. 
.SUN NIGHT...N wind 30 kt. Seas 8 ft. 
.MON THROUGH WED...NE wind 30 kt. Seas 11 ft.

$$

PKZ171-180315-
Unalaska Bay-
711 AM AKDT Sat Apr 17 2021

.TODAY...Variable wind less than 10 kt becoming E 10 kt in the
afternoon. Seas 3 ft. 
.TONIGHT...NE wind 10 kt. Seas 3 ft. 
.SUN...NW wind 15 kt. Seas 3 ft. 
.SUN NIGHT...N wind 20 kt. Seas 5 ft. 
.MON...NE wind 20 kt. Seas 7 ft. 
.TUE THROUGH WED...NE wind 25 kt. Seas 10 ft.

$$

PKZ172-180315-
Cape Sarichef to Nikolski Pacific Side-
711 AM AKDT Sat Apr 17 2021

.TODAY...NE wind 15 kt. Seas 5 ft. 
.TONIGHT...N wind 20 kt. Seas 4 ft. 
.SUN...N wind 20 kt. Seas 4 ft. 
.SUN NIGHT...N wind 25 kt. Seas 6 ft. 
.MON...NE wind 25 kt. Seas 13 ft. 
.TUE THROUGH WED...NE wind 30 kt. Seas 14 ft.

$$

PKZ173-180315-
Nikolski to Seguam Island Bering Side-
711 AM AKDT Sat Apr 17 2021

.TODAY...SE wind 15 kt. Seas 4 ft. 
.TONIGHT...Variable wind 10 kt. Seas 3 ft. 
.SUN...N wind 20 kt. Seas 6 ft. 
.SUN NIGHT...N wind 30 kt. Seas 8 ft. 
.MON...N wind 30 kt. Seas 11 ft. 
.TUE THROUGH WED...NE wind 25 kt. Seas 11 ft.

$$

PKZ174-180315-
Nikolski to Seguam Island Pacific Side-
711 AM AKDT Sat Apr 17 2021

.TODAY...SE wind 15 kt. Seas 4 ft. 
.TONIGHT...Variable wind 10 kt. Seas 4 ft. 
.SUN...N wind 20 kt. Seas 5 ft. 
.SUN NIGHT...N wind 30 kt. Seas 8 ft. 
.MON...N wind 30 kt. Seas 11 ft. 
.TUE THROUGH WED...N wind 25 kt. Seas 11 ft.

$$

PKZ175-180315-
Seguam Island to Adak Bering Side-
711 AM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SE wind 25 kt. Seas 5 ft.
.TONIGHT...SE wind 20 kt. Seas 7 ft.
.SUN...NE wind 15 kt. Seas 7 ft.
.SUN NIGHT...N wind 30 kt. Seas 8 ft.
.MON...N wind 30 kt. Seas 12 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 10 ft.


$$

PKZ176-180315-
Seguam Island to Adak Pacific Side-
711 AM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...S wind 25 kt. Seas 7 ft.
.TONIGHT...SE wind 25 kt diminishing to 15 kt after midnight. 
Seas 8 ft.
.SUN...Variable wind 10 kt. Seas 7 ft.
.SUN NIGHT...N wind 30 kt. Seas 7 ft.
.MON...N wind 30 kt. Seas 10 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 9 ft.

$$

PKZ177-180315-
Adak to Kiska-
711 AM AKDT Sat Apr 17 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 25 kt increasing to 35 kt in the afternoon. 
Seas 11 ft. Rain.
.TONIGHT...N wind 35 kt. Seas 12 ft. Rain.
.SUN...N wind 30 kt. Seas 9 ft.
.SUN NIGHT...N wind 20 kt. Seas 7 ft.
.MON...N wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.WED...N wind 20 kt. Seas 8 ft.

$$

PKZ178-180315-
Kiska to Attu-
711 AM AKDT Sat Apr 17 2021

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 14 ft.
.TONIGHT...NW wind 30 kt. Seas 11 ft.
.SUN...NW wind 20 kt. Seas 8 ft.
.SUN NIGHT...N wind 20 kt. Seas 6 ft.
.MON THROUGH WED...N wind 20 kt. Seas 7 ft.

$$

PKZ179-180315-
Pribilof Islands Near Shore Waters-
711 AM AKDT Sat Apr 17 2021

.TODAY...SE wind 15 kt. Seas 5 ft. 
.TONIGHT...Variable wind 10 kt. Seas 4 ft. 
.SUN...N wind 20 kt. Seas 5 ft. 
.SUN NIGHT...N wind 25 kt. Seas 7 ft. 
.MON...NE wind 30 kt. Seas 9 ft. 
.TUE THROUGH WED...NE wind 25 kt. Seas 9 ft.

$$

PKZ180-180315-
Kuskokwim Delta and Etolin Strait-
711 AM AKDT Sat Apr 17 2021

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

$$

PKZ181-180315-
North and West of Nunivak Island-
711 AM AKDT Sat Apr 17 2021

.TODAY...SE wind 15 kt. Seas in ice free waters 3 ft. Freezing
spray. 
.TONIGHT...Variable wind 10 kt. Seas in ice free waters 3 ft. 
.SUN...N wind 20 kt. Seas in ice free waters 4 ft. Freezing
spray. 
.SUN NIGHT...N wind 25 kt. Seas in ice free waters 3 ft. 
.MON...N wind 30 kt. Seas in ice free waters 4 ft. 
.TUE...NE wind 25 kt. Seas in ice free waters 3 ft. 
.WED...NE wind 20 kt. Seas in ice free waters 3 ft.

$$

PKZ185-180315-
Saint Matthew Island Waters-
711 AM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SE wind 20 kt E of Saint Matthew Island...S 30 kt 
W of Saint Matthew Island. Seas in ice free waters 11 ft. 
Freezing spray in the morning. 
.TONIGHT...SE wind 15 kt E of Saint Matthew Island...S 25 kt 
W of Saint Matthew Island. Seas in ice free waters 10 ft. 
.SUN...N wind 20 kt E of Saint Matthew Island...SE 15 kt W of
Saint Matthew Island. Seas in ice free waters 7 ft. 
.SUN NIGHT...N wind 25 kt. Seas in ice free waters 6 ft. 
.MON...N wind 30 kt. Seas in ice free waters 6 ft. 
.TUE...NE wind 25 kt. Seas in ice free waters 6 ft. 
.WED...NE wind 20 kt. Seas in ice free waters 6 ft.

$$

2 follow-up statements

504 
FZAK52 PAFC 172312
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
312 PM AKDT Sat Apr 17 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.

PKZ199-181200-
312 PM AKDT Sat Apr 17 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1013 mb low 320 nm west of Saint Matthew Island moves to 270 nm
west of Saint Matthew Island at 1030 mb Sun afternoon and
dissipates. Its front remains stationary over the Bering and 
central Aleutians through Sunday, then tapers off Sun night. A 
front from the North Pacific extends to the eastern Bering tonight
and moves westward through Pribilof Islands and the Aleutians 
through Mon afternoon.

$$

PKZ150-181200-
South of the AK Peninsula Sitkinak to Castle Cape-
312 PM AKDT Sat Apr 17 2021

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 7 ft. Rain showers.
.SUN...NE wind 25 kt increasing to 35 kt in the afternoon. Seas 9 
ft. Rain.
.SUN NIGHT...NE wind 35 kt. Seas 11 ft.
.MON...NE wind 35 kt. Seas 16 ft.
.MON NIGHT...SE wind 30 kt. Seas 14 ft.
.TUE THROUGH WED...E wind 30 kt. Seas 13 ft.
.THU...NE wind 15 kt. Seas 10 ft.

$$

PKZ155-181200-
South of the AK Peninsula Castle Cape to Cape Sarichef-
312 PM AKDT Sat Apr 17 2021

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...N wind 20 kt except NE 25 kt from the Shumagin Islands
E. Seas 5 ft.
.SUN...N wind 20 kt except NE 30 kt from the Shumagin Islands E. Seas
6 ft.
.SUN NIGHT...NE wind 35 kt. Seas 10 ft. Rain.
.MON AND MON NIGHT...E wind 30 kt. Seas 12 ft.
.TUE THROUGH WED...E wind 30 kt. Seas 15 ft.
.THU...NE wind 15 kt. Seas 9 ft.

$$

PKZ160-181200-
Bristol Bay-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas in ice free waters 2 ft.
.SUN...NE wind 20 kt. Seas in ice free waters 2 ft.
.SUN NIGHT...NE wind 25 kt. Seas in ice free waters 3 ft.
.MON AND MON NIGHT...E wind 30 kt. Seas in ice free waters 4 ft.
.TUE...NE wind 25 kt. Seas in ice free waters 4 ft.
.WED...NE wind 20 kt. Seas in ice free waters 4 ft.
.THU...NE wind 15 kt. Seas in ice free waters 2 ft.

$$

PKZ165-181200-
Port Heiden to Cape Sarichef-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 4 ft.
.SUN...NE wind 20 kt. Seas 4 ft.
.SUN NIGHT...NE wind 30 kt. Seas 6 ft.
.MON AND MON NIGHT...NE wind 30 kt. Seas 8 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 11 ft.
.THU...E wind 15 kt. Seas 4 ft.

$$

PKZ170-181200-
Cape Sarichef to Nikolski Bering Side-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...N wind increasing to 15 kt. Seas 4 ft.
.SUN...N wind 20 kt. Seas 4 ft.
.SUN NIGHT...N wind 25 kt. Seas 6 ft.
.MON...NE wind 30 kt. Seas 10 ft.
.MON NIGHT...NE wind 25 kt. Seas 9 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 11 ft.
.THU...E wind 15 kt. Seas 7 ft.

$$

PKZ171-181200-
Unalaska Bay-
312 PM AKDT Sat Apr 17 2021

.TONIGHT...N wind 10 kt. Seas 3 ft.
.SUN...N wind 10 kt becoming NW in the afternoon. Seas 3 ft.
.SUN NIGHT...NW wind 15 kt. Seas 5 ft.
.MON AND MON NIGHT...NE wind 15 kt. Seas 5 ft.
.TUE THROUGH WED...NE wind 25 kt. Seas 10 ft.
.THU...E wind 10 kt. Seas 2 ft.

$$

PKZ172-181200-
Cape Sarichef to Nikolski Pacific Side-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 4 ft.
.SUN...N wind 20 kt. Seas 4 ft.
.SUN NIGHT...N wind 25 kt. Seas 6 ft.
.MON AND MON NIGHT...NE wind 25 kt. Seas 8 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 14 ft.
.THU...E wind 15 kt. Seas 9 ft.

$$

PKZ173-181200-
Nikolski to Seguam Island Bering Side-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...E wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt becoming NE 20 kt in the afternoon. Seas 
6 ft.
.SUN NIGHT...N wind 25 kt. Seas 7 ft.
.MON AND MON NIGHT...NE wind 30 kt. Seas 11 ft.
.TUE THROUGH WED...NE wind 25 kt. Seas 11 ft.
.THU...E wind 15 kt. Seas 8 ft.

$$

PKZ174-181200-
Nikolski to Seguam Island Pacific Side-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.SUN... Variable wind 10 kt becoming N 15 kt in the afternoon. Seas 
5 ft.
.SUN NIGHT...N wind 25 kt. Seas 7 ft.
.MON AND MON NIGHT...N wind 30 kt. Seas 10 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 10 ft.
.THU...E wind 15 kt. Seas 9 ft.

$$

PKZ175-181200-
Seguam Island to Adak Bering Side-
312 PM AKDT Sat Apr 17 2021

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

.TONIGHT...SE wind 20 kt. Seas 7 ft. Rain and snow.
.SUN...Variable wind 10 kt. Seas 8 ft.
.SUN NIGHT...NE wind 15 kt becoming N 25 kt after midnight. Seas 6 
ft.
.MON AND MON NIGHT...N wind 30 kt. Seas 11 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 10 ft.
.THU...NE wind 15 kt. Seas 8 ft.

$$

PKZ176-181200-
Seguam Island to Adak Pacific Side-
312 PM AKDT Sat Apr 17 2021

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

.TONIGHT...SE wind 25 kt. Seas 8 ft. Rain and snow.
.SUN...E wind 15 kt. Seas 7 ft.
.SUN NIGHT...N wind 25 kt. Seas 6 ft.
.MON AND MON NIGHT...N wind 30 kt. Seas 10 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 8 ft.
.THU...NE wind 20 kt. Seas 8 ft.

$$

PKZ177-181200-
Adak to Kiska-
312 PM AKDT Sat Apr 17 2021

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 12 ft. Rain and snow showers.
.SUN...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft.
.SUN NIGHT...N wind 20 kt. Seas 6 ft.
.MON...N wind 25 kt. Seas 6 ft.
.MON NIGHT...N wind 30 kt. Seas 9 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.WED...N wind 20 kt. Seas 8 ft.
.THU...NE wind 20 kt. Seas 8 ft.

$$

PKZ178-181200-
Kiska to Attu-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...NW wind 30 kt. Seas 11 ft.
.SUN...NW wind 25 kt. Seas 8 ft.
.SUN NIGHT...N wind 20 kt. Seas 6 ft.
.MON...NE wind 15 kt. Seas 4 ft.
.MON NIGHT...NE wind 25 kt. Seas 5 ft.
.TUE THROUGH THU...NE wind 20 kt. Seas 9 ft.

$$

PKZ179-181200-
Pribilof Islands Near Shore Waters-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.SUN...N wind 20 kt. Seas 5 ft.
.SUN NIGHT...N wind 25 kt. Seas 6 ft.
.MON AND MON NIGHT...NE wind 30 kt. Seas 9 ft.
.TUE...NE wind 30 kt. Seas 10 ft.
.WED...NE wind 25 kt. Seas 9 ft.
.THU...NE wind 15 kt. Seas 7 ft.

$$

PKZ180-181200-
Kuskokwim Delta and Etolin Strait-
312 PM AKDT Sat Apr 17 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

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

$$

PKZ181-181200-
North and West of Nunivak Island-
312 PM AKDT Sat Apr 17 2021

.TONIGHT...Variable wind 10 kt. Seas in ice free waters 3 ft.
.SUN...N 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...NE wind 30 kt. Seas in ice free waters 4 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 4 ft.
.WED...NE wind 20 kt. Seas in ice free waters 3 ft.
.THU...NE wind 15 kt. Seas in ice free waters 3 ft.

$$

PKZ185-181200-
Saint Matthew Island Waters-
312 PM AKDT Sat Apr 17 2021

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

.TONIGHT...SE wind 15 kt E of Saint Matthew Island... SE 25 kt W of 
Saint Matthew Island. Seas in ice free waters 9 ft.
.SUN...E wind 15 kt becoming N in the afternoon. Seas in ice free 
waters 7 ft.
.SUN NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.MON AND MON NIGHT...NE wind 30 kt. Seas in ice free waters 6 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 7 ft.
.WED...NE wind 20 kt. Seas in ice free waters 6 ft.
.THU...NE wind 15 kt. Seas in ice free waters 5 ft.

$$

404 
FZAK52 PAFC 181143
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
343 AM AKDT Sun Apr 18 2021

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

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

PKZ199-190015-
343 AM AKDT Sun Apr 18 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A front in the Western Bering remains stationary as it weakens
through Sun evening. A low with multiple centers moves 200 nm
south of Chignik Mon afternoon at 999 mb then to 200 nm south of
Dutch Harbor at 1003 mb Tue morning.

$$

PKZ150-190015-
South of the AK Peninsula Sitkinak to Castle Cape-
343 AM AKDT Sun Apr 18 2021

...GALE WARNING THROUGH MONDAY...

.TODAY...NE wind 25 kt increasing to 35 kt in the afternoon. Seas 9 
ft.
.TONIGHT...NE wind 35 kt. Seas 11 ft.
.MON...NE wind 35 kt. Seas 14 ft. Rain.
.MON NIGHT...SE wind 30 kt. Seas 13 ft.
.TUE THROUGH WED...E wind 30 kt. Seas 12 ft.
.THU...NE wind 15 kt. Seas 9 ft.

$$

PKZ155-190015-
South of the AK Peninsula Castle Cape to Cape Sarichef-
343 AM AKDT Sun Apr 18 2021

...GALE WARNING TONIGHT...

.TODAY...N wind 20 kt except NE 30 kt from the Shumagin Islands E.
Seas 6 ft.
.TONIGHT...N wind 35 kt. Seas 10 ft. Rain.
.MON...NE wind 30 kt. Seas 9 ft.
.MON NIGHT...E wind 30 kt. Seas 12 ft.
.TUE...E wind 30 kt. Seas 12 ft.
.WED...NE wind 35 kt. Seas 15 ft.
.THU...NE wind 20 kt. Seas 11 ft.

$$

PKZ160-190015-
Bristol Bay-
343 AM AKDT Sun Apr 18 2021

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

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

$$

PKZ165-190015-
Port Heiden to Cape Sarichef-
343 AM AKDT Sun Apr 18 2021

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

.TODAY...NE wind 20 kt. Seas 4 ft.
.TONIGHT...NE wind 30 kt. Seas 6 ft.
.MON...NE wind 30 kt. Seas 8 ft. Rain.
.MON NIGHT...NE wind 30 kt. Seas 8 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 8 ft.
.THU...NE wind 15 kt. Seas 4 ft.

$$

PKZ170-190015-
Cape Sarichef to Nikolski Bering Side-
343 AM AKDT Sun Apr 18 2021

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

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

$$

PKZ171-190015-
Unalaska Bay-
343 AM AKDT Sun Apr 18 2021

.TODAY...N wind 10 kt becoming NW in the afternoon. Seas 3 ft.
.TONIGHT...NW wind 15 kt. Seas 5 ft. Rain.
.MON...N wind 15 kt diminishing to 10 kt in the afternoon. Seas 5
ft subsiding to 3 ft in the afternoon. Widespread rain showers.
.MON NIGHT...NE wind 15 kt. Seas 5 ft.
.TUE...NE wind 20 kt. Seas 5 ft.
.WED...NE wind 25 kt. Seas 7 ft.
.THU...NE wind 15 kt. Seas 3 ft.

$$

PKZ172-190015-
Cape Sarichef to Nikolski Pacific Side-
343 AM AKDT Sun Apr 18 2021

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

.TODAY...N wind 20 kt. Seas 4 ft.
.TONIGHT...N wind 30 kt. Seas 7 ft.
.MON...N wind 25 kt. Seas 8 ft. Rain.
.MON NIGHT...NE wind 25 kt. Seas 8 ft.
.TUE...NE wind 30 kt. Seas 13 ft.
.WED...NE wind 35 kt. Seas 15 ft.
.THU...NE wind 25 kt. Seas 12 ft.

$$

PKZ173-190015-
Nikolski to Seguam Island Bering Side-
343 AM AKDT Sun Apr 18 2021

...GALE WARNING MONDAY...

.TODAY...Variable wind 10 kt becoming NE 20 kt in the afternoon.
Seas 6 ft.
.TONIGHT...N wind 25 kt. Seas 7 ft.
.MON...N wind 35 kt. Seas 11 ft. Rain.
.MON NIGHT...NE wind 30 kt. Seas 11 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 10 ft.
.THU...NE wind 20 kt. Seas 7 ft.

$$

PKZ174-190015-
Nikolski to Seguam Island Pacific Side-
343 AM AKDT Sun Apr 18 2021

...GALE WARNING MONDAY...

.TODAY...N wind 15 kt. Seas 5 ft.
.TONIGHT...N wind 25 kt. Seas 7 ft.
.MON...N wind 35 kt. Seas 10 ft. Rain.
.MON NIGHT...N wind 30 kt. Seas 10 ft.
.TUE...NE wind 25 kt. Seas 9 ft.
.WED...N wind 25 kt. Seas 13 ft.
.THU...NE wind 20 kt. Seas 12 ft.

$$

PKZ175-190015-
Seguam Island to Adak Bering Side-
343 AM AKDT Sun Apr 18 2021

...GALE WARNING MONDAY...

.TODAY...E wind 10 kt. Seas 8 ft.
.TONIGHT...N wind 15 kt increasing to 25 kt after midnight. Seas 6 
ft.
.MON...N wind 35 kt. Seas 9 ft.
.MON NIGHT...N wind 35 kt. Seas 11 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 10 ft.
.THU...NE wind 20 kt. Seas 7 ft.

$$

PKZ176-190015-
Seguam Island to Adak Pacific Side-
343 AM AKDT Sun Apr 18 2021

...GALE WARNING MONDAY...

.TODAY...E wind 15 kt. Seas 7 ft.
.TONIGHT...N wind 25 kt. Seas 5 ft.
.MON...N wind 35 kt. Seas 9 ft.
.MON NIGHT...N wind 35 kt. Seas 10 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 8 ft.
.THU...NE wind 20 kt. Seas 10 ft.

$$

PKZ177-190015-
Adak to Kiska-
343 AM AKDT Sun Apr 18 2021

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

.TODAY...N wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft.
.TONIGHT...N wind 20 kt. Seas 6 ft.
.MON...N wind 25 kt. Seas 5 ft.
.MON NIGHT...N wind 30 kt. Seas 8 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.WED...N wind 20 kt. Seas 8 ft.
.THU...NE wind 25 kt. Seas 7 ft.

$$

PKZ178-190015-
Kiska to Attu-
343 AM AKDT Sun Apr 18 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 25 kt. Seas 8 ft.
.TONIGHT...N wind 20 kt. Seas 6 ft.
.MON...NE wind 15 kt. Seas 4 ft.
.MON NIGHT...NE wind 25 kt. Seas 4 ft.
.TUE THROUGH WED...NE wind 20 kt. Seas 8 ft.
.THU...NE wind 25 kt. Seas 7 ft.

$$

PKZ179-190015-
Pribilof Islands Near Shore Waters-
343 AM AKDT Sun Apr 18 2021

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

.TODAY...North wind 10 kt increasing to 20 kt in the afternoon. Seas
5 ft.
.TONIGHT...N wind 25 kt. Seas 6 ft.
.MON...N wind 30 kt. Seas 8 ft.
.MON NIGHT...NE wind 30 kt. Seas 10 ft.
.TUE...NE wind 30 kt. Seas 10 ft.
.WED...NE wind 25 kt. Seas 7 ft.
.THU...NE wind 15 kt. Seas 5 ft.

$$

PKZ180-190015-
Kuskokwim Delta and Etolin Strait-
343 AM AKDT Sun Apr 18 2021

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

.TODAY...NE wind 20 kt. Seas in ice free waters 4 ft.
.TONIGHT...N wind 25 kt. Seas in ice free waters 4 ft.
.MON...NE wind 30 kt. Seas in ice free waters 6 ft.
.MON NIGHT...NE wind 30 kt. Seas in ice free waters 7 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 6 ft.
.WED...NE wind 25 kt. Seas in ice free waters 4 ft.
.THU...NE wind 15 kt. Seas in ice free waters 3 ft.

$$

PKZ181-190015-
North and West of Nunivak Island-
343 AM AKDT Sun Apr 18 2021

...SMALL CRAFT ADVISORY MONDAY...

.TODAY...N wind 20 kt. Seas in ice free waters 3 ft.
.TONIGHT...N wind 20 kt. Seas in ice free waters 3 ft.
.MON...N wind 30 kt. Seas in ice free waters 4 ft.
.MON NIGHT...NE wind 35 kt. Seas in ice free waters 5 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 4 ft.
.WED...NE wind 20 kt. Seas in ice free waters 3 ft.
.THU...N wind 15 kt. Seas in ice free waters 3 ft.

$$

PKZ185-190015-
Saint Matthew Island Waters-
343 AM AKDT Sun Apr 18 2021

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

.TODAY...E wind 15 kt. Seas in ice free waters 7 ft.
.TONIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.MON...N wind 30 kt. Seas in ice free waters 6 ft.
.MON NIGHT...NE wind 35 kt. Seas in ice free waters 7 ft.
.TUE...NE wind 30 kt. Seas in ice free waters 7 ft.
.WED...N wind 20 kt. Seas in ice free waters 5 ft.
.THU...NE wind 15 kt. Seas in ice free waters 4 ft.

$$

The office that day

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

Issued	Product	Office	Lasted
Apr 17, 2:39 AM AKDT	Gale Warning	AFC	5 days
Apr 17, 2:39 AM AKDT	Small Craft Advisory	AFC	37 hr
Apr 17, 2:47 AM AKDT	Gale Warning	AFC	25 hr
Apr 17, 2:47 AM AKDT	Small Craft Advisory	AFC	25 hr
Apr 17, 7:11 AM AKDT	Gale Warning	AFC	21 hr
Apr 17, 3:12 PM AKDT	Gale Warning	AFC	5 days
Apr 17, 3:12 PM AKDT	Small Craft Advisory	AFC	40 hr
Apr 17, 3:13 PM AKDT	Small Craft Advisory	AFC	13 hr

Nearby

Small Craft Advisories in Alaska, 2021 Every 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.