Storm Warning 77, NWS Anchorage, AK

467 
FZAK52 PAFC 192348
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
348 PM AKDT Tue Apr 19 2022

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.

PKZ199-201315-
348 PM AKDT Tue Apr 19 2022
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

Lows along the decaying front merge in the North Pacific through 
Wed morning. A ridge moves across the Aleutians by midday Wed. 
Two North Pacific lows merge to form a 978 mb 176 nm South of 
Kiska for Wed morning. This low deepens to 964 mb 158 nm South of
Adak Thu night, then weakens to 967 mb 214 nm South of Dutch 
Harbor by Thu afternoon. Its front sweeps across the Southern 
Bering Sea and AKPEN through Thu afternoon.

$$

PKZ150-201315-
South of the AK Peninsula Sitkinak to Castle Cape-
348 PM AKDT Tue Apr 19 2022

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

.TONIGHT...E wind 20 kt. Seas 15 ft.
.WED...E wind 10 kt. Seas 12 ft.
.WED NIGHT...SE wind 15 kt increasing to 25 kt after midnight.
Seas 9 ft.
.THU AND THU NIGHT...SE wind 40 kt. Seas 14 ft.
.FRI...E wind 20 kt. Seas 15 ft.
.SAT...N wind 15 kt. Seas 12 ft.
.SUN...N wind 20 kt. Seas 8 ft.

$$

PKZ155-201315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...NE wind 25 kt diminishing to 15 kt after midnight. Seas
16 ft.
.WED...E wind 10 kt becoming SE 20 kt in the afternoon. From the 
Shumagin Islands E, variable wind 10 kt. Seas 12 ft.
.WED NIGHT...SE wind 25 kt increasing to 40 kt after midnight.
From the Shumagin Islands E, SE wind 20 kt increasing to 30 kt after
midnight. Seas 10 ft. Rain.
.THU...SE wind 40 kt. Seas 14 ft.
.THU NIGHT...E wind 20 kt. Seas 16 ft.
.FRI...N wind 20 kt. Seas 17 ft.
.SAT...NW wind 25 kt. Seas 11 ft.
.SUN...NW wind 25 kt. Seas 7 ft.

$$

PKZ160-201315-
Bristol Bay-
348 PM AKDT Tue Apr 19 2022

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...NE wind 15 kt becoming SE after midnight. Seas 4 ft.
.WED...SE wind 10 kt. Seas 3 ft.
.WED NIGHT...E wind 15 kt increasing to 25 kt after midnight. Seas
3 ft.
.THU AND THU NIGHT...E wind 35 kt. Seas 8 ft.
.FRI...NE wind 30 kt. Seas 5 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...NW wind 15 kt. Seas 4 ft.

$$

PKZ165-201315-
Port Heiden to Cape Sarichef-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...NE wind 20 kt in the evening becoming variable 10 kt.
Seas 11 ft.
.WED...Variable wind 10 kt becoming SE 20 kt in the afternoon. From 
Port Moller E, variable wind 10 kt.Seas 6 ft.
.WED NIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas 8
ft.
.THU AND THU NIGHT...E wind 40 kt. Seas 11 ft.
.FRI...N wind 25 kt. Seas 7 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 6 ft.

$$

PKZ170-201315-
Cape Sarichef to Nikolski Bering Side-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...N wind 30 kt diminishing to 15 kt after midnight. Seas
14 ft.
.WED...E wind 15 kt becoming SE 25 kt in the afternoon. Seas 8 ft.
.WED NIGHT...E wind 40 kt. Seas 11 ft. Rain and snow.
.THU...SE wind 35 kt. Seas 12 ft.
.THU NIGHT...NE wind 20 kt. Seas 8 ft.
.FRI...N wind 30 kt. Seas 10 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SUN...W wind 20 kt. Seas 6 ft.

$$

PKZ171-201315-
Unalaska Bay-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...NW wind 20 kt decreasing to 10 kt after midnight. Seas 7 
ft subsiding to 3 ft after midnight. Rain.
.WED...Variable wind less than 10 kt becoming SE 20 kt in the
afternoon. Seas 3 ft.
.WED NIGHT...SE wind 30 kt becoming E 40 kt after midnight. Seas
5 ft. Rain and snow.
.THU...SE wind 20 kt. Seas 2 ft.
.THU NIGHT...NE wind 10 kt. Seas 3 ft.
.FRI THROUGH SAT...NW wind 20 kt. Seas 6 ft.
.SUN...W wind 15 kt. Seas 2 ft.

$$

PKZ172-201315-
Cape Sarichef to Nikolski Pacific Side-
348 PM AKDT Tue Apr 19 2022

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

.TONIGHT...NW wind 35 kt becoming N 20 kt after midnight. Seas
16 ft.
.WED...Variable wind 10 kt becoming SE 25 kt in the afternoon.
Seas 10 ft.
.WED NIGHT...SE wind 40 kt. Seas 12 ft. Rain and snow.
.THU...S wind 20 kt. Seas 12 ft.
.THU NIGHT...N wind 15 kt. Seas 17 ft.
.FRI...NW wind 25 kt. Seas 15 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.

$$

PKZ173-201315-
Nikolski to Seguam Island Bering Side-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NW wind 35 kt diminishing to 20 kt after midnight. Seas
15 ft subsiding to 10 ft after midnight.
.WED...E wind 25 kt becoming SE 35 kt in the afternoon. Seas 9 ft.
Rain.
.WED NIGHT...E wind 40 kt becoming S 25 kt after midnight. Seas 12 
ft. Rain and snow.
.THU...W wind 20 kt. Seas 10 ft.
.THU NIGHT...N wind 30 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 12 ft.
.SAT...W wind 25 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 6 ft.

$$

PKZ174-201315-
Nikolski to Seguam Island Pacific Side-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NW wind 40 kt diminishing to 20 kt after midnight. Seas 
17 ft subsiding to 12 ft after midnight.
.WED...SE wind 30 kt increasing to 40 kt in the afternoon. Seas
11 ft. Rain.
.WED NIGHT...SE wind 40 kt becoming SW 20 kt after midnight. Seas
12 ft.
.THU...Variable wind 10 kt. Seas 17 ft.
.THU NIGHT...NW wind 30 kt. Seas 17 ft.
.FRI...NW wind 30 kt. Seas 15 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ175-201315-
Seguam Island to Adak Bering Side-
348 PM AKDT Tue Apr 19 2022

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

.TONIGHT...NW wind 20 kt becoming E after midnight. Seas 11 ft.
.WED...E wind 45 kt. Seas 13 ft. Rain.
.WED NIGHT...SE wind 40 kt becoming NW 25 kt after midnight. Seas
13 ft. Snow.
.THU AND THU NIGHT...N wind 35 kt. Seas 14 ft.
.FRI...NW wind 30 kt. Seas 14 ft.
.SAT...W wind 20 kt. Seas 9 ft.
.SUN...S wind 20 kt. Seas 6 ft.

$$

PKZ176-201315-
Seguam Island to Adak Pacific Side-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING WEDNESDAY...

.TONIGHT...W wind 20 kt becoming SE 30 kt after midnight. Seas
11 ft. Rain.
.WED...SE wind 45 kt. Seas 13 ft. Rain and snow.
.WED NIGHT...SW wind 25 kt becoming W 15 kt after midnight. Seas
14 ft.
.THU AND THU NIGHT...NW wind 35 kt. Seas 17 ft.
.FRI...NW wind 35 kt. Seas 14 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SUN...S wind 20 kt. Seas 8 ft.

$$

PKZ177-201315-
Adak to Kiska-
348 PM AKDT Tue Apr 19 2022

...STORM WARNING WEDNESDAY...

.TONIGHT...SE wind 25 kt becoming E 45 kt after midnight. Seas 9
ft. Rain and snow.
.WED...Bering side, E wind 50 kt. Pacific side, E wind 45 kt 
becoming S 30 kt in the afternoon. Seas 17 ft. Rain and snow.
.WED NIGHT...N wind 40 kt. Seas 16 ft. Rain and snow.
.THU...NW wind 40 kt. Seas 16 ft.
.THU NIGHT...NW wind 35 kt. Seas 14 ft.
.FRI...NW wind 30 kt. Seas 12 ft.
.SAT THROUGH SUN...S wind 25 kt. Seas 9 ft.

$$

PKZ178-201315-
Kiska to Attu-
348 PM AKDT Tue Apr 19 2022

...STORM WARNING WEDNESDAY...

.TONIGHT...SE wind 25 kt becoming E 40 kt after midnight. Seas 8
ft. Rain and snow.
.WED...NE wind 50 kt E of Shemya. NE wind 30 kt W of Shemya. Seas 13
ft building to 18 ft in the afternoon. Rain and snow.
.WED NIGHT...N wind 45 kt. Seas 18 ft.
.THU...NW wind 35 kt. Seas 14 ft.
.THU NIGHT...NW wind 25 kt. Seas 10 ft.
.FRI...SW wind 20 kt. Seas 8 ft.
.SAT THROUGH SUN...S wind 30 kt. Seas 12 ft.

$$

PKZ179-201315-
Pribilof Islands Near Shore Waters-
348 PM AKDT Tue Apr 19 2022

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 9 ft.
.WED...Variable wind 10 kt becoming E 20 kt in the afternoon. Seas
7 ft.
.WED NIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas 
7 ft building to 10 ft after midnight. Rain.
.THU...NE wind 35 kt. Seas 14 ft.
.THU NIGHT...NE wind 30 kt. Seas 13 ft.
.FRI...N wind 30 kt. Seas 11 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 6 ft.

$$

PKZ180-201315-
Kuskokwim Delta and Etolin Strait-
348 PM AKDT Tue Apr 19 2022

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...N wind 20 kt becoming Variable 10 kt after midnight. Seas
7 ft.
.WED...Variable wind less than 10 kt becoming SE 10 kt in the
afternoon. Seas 4 ft.
.WED NIGHT...E wind 15 kt increasing to 25 kt after midnight. Seas 5
ft.
.THU AND THU NIGHT...NE wind 40 kt. Seas 12 ft.
.FRI...NE wind 30 kt. Seas 8 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 4 ft.

$$

PKZ181-201315-
North and West of Nunivak Island-
348 PM AKDT Tue Apr 19 2022

.TONIGHT...N wind 10 kt. Seas in ice free waters 4 ft.
.WED...Variable wind 10 kt. Seas in ice free waters 2 ft.
.WED NIGHT...E wind 20 kt. Seas in ice free waters 3 ft. Freezing
spray.
.THU...NE wind 30 kt. Seas in ice free waters 7 ft.
.THU NIGHT...NE wind 25 kt. Seas in ice free waters 7 ft.
.FRI THROUGH SUN...NW wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ185-201315-
Saint Matthew Island Waters-
348 PM AKDT Tue Apr 19 2022

.TONIGHT...Variable wind 10 kt E of Saint Matthew Island...SW 15 kt
W of Saint Matthew Island. Seas in ice free waters 6 ft.
.WED...Variable wind 10 kt becoming E 15 kt in the afternoon. Seas
in ice free waters 5 ft.
.WED NIGHT...NE wind 20 kt. Seas in ice free waters 4 ft. Freezing
spray.
.THU...NE wind 25 kt. Seas in ice free waters 5 ft.
.THU NIGHT...NE wind 20 kt. Seas in ice free waters 6 ft.
.FRI...N wind 20 kt. Seas in ice free waters 5 ft.
.SAT...W wind 15 kt. Seas in ice free waters 3 ft.
.SUN...SE wind 20 kt. Seas in ice free waters 10 ft.

$$

060 
FZAK52 PAFC 201137
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
337 AM AKDT Wed Apr 20 2022

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.

PKZ199-210015-
337 AM AKDT Wed Apr 20 2022
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A ridge moves across the Aleutians through midday Wed. A 970 mb
low 190 nm south of Shemya moves to 220 nm south of Atka at 965 mb
by Thu morning and then to 240 nm south of Sand Point at 970 mb by
Fri morning. 

$$

PKZ150-210015-
South of the AK Peninsula Sitkinak to Castle Cape-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY...

.TODAY...Variable wind 10 kt. Seas 12 ft.
.TONIGHT...SE wind 20 kt increasing to 30 kt after midnight. Seas
9 ft.
.THU...E wind 40 kt. Seas 14 ft. Rain.
.THU NIGHT...SE wind 35 kt. Seas 13 ft.
.FRI...E wind 20 kt. Seas 16 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 10 ft.

$$

PKZ155-210015-
South of the AK Peninsula Castle Cape to Cape Sarichef-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...SE wind 20 kt except variable 10 kt from the Shumagin
Islands E. Seas 12 ft.
.TONIGHT...SE wind 25 kt increasing to 35 kt after midnight. Seas
10 ft. Rain.
.THU...SE wind 40 kt becoming S 25 kt in the afternoon. From the
Shumagin Islands E, SE wind 40 kt. Seas 13 ft. Rain.
.THU NIGHT...E wind 20 kt. Seas 16 ft.
.FRI...N wind 20 kt. Seas 17 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 9 ft.

$$

PKZ160-210015-
Bristol Bay-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY...

.TODAY...SE wind 10 kt. Seas 4 ft.
.TONIGHT...E wind 15 kt increasing to 25 kt after midnight. Seas
4 ft.
.THU...E wind 35 kt. Seas 7 ft.
.THU NIGHT...E wind 35 kt. Seas 7 ft.
.FRI...NE wind 30 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 4 ft.

$$

PKZ165-210015-
Port Heiden to Cape Sarichef-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...Variable wind 10 kt becoming SE 20 kt in the afternoon.
Seas 7 ft.
.TONIGHT...E wind 35 kt. Seas 7 ft. Snow.
.THU...E wind 40 kt. Seas 10 ft. Rain and snow.
.THU NIGHT...E wind 35 kt. Seas 10 ft.
.FRI...N wind 20 kt. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 5 ft.
.SUN...W wind 20 kt. Seas 4 ft.

$$

PKZ170-210015-
Cape Sarichef to Nikolski Bering Side-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TODAY...E wind 15 kt becoming SE 25 kt in the afternoon. Seas 8
ft.
.TONIGHT...SE wind 40 kt. Seas 10 ft. Rain.
.THU...SE wind 30 kt becoming E 15 kt in the afternoon. Seas 10
ft.
.THU NIGHT...N wind 20 kt. Seas 8 ft.
.FRI...N wind 30 kt. Seas 11 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN...S wind 25 kt. Seas 6 ft.

$$

PKZ171-210015-
Unalaska Bay-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TODAY...S wind 10 kt becoming SE 20 kt in the afternoon. Seas 3
ft.
.TONIGHT...SE wind 35 kt. Seas 5 ft. Rain and snow.
.THU...S wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 3 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 6 ft.
.SUN...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-210015-
Cape Sarichef to Nikolski Pacific Side-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TODAY...Variable wind 10 kt becoming SE 30 kt in the afternoon.
Seas 10 ft.
.TONIGHT...SE wind 35 kt. Seas 10 ft. Rain.
.THU...S wind 20 kt. Seas 14 ft.
.THU NIGHT...N wind 15 kt. Seas 18 ft.
.FRI...NW wind 25 kt. Seas 16 ft.
.SAT...W wind 25 kt. Seas 10 ft.
.SUN...SW wind 25 kt. Seas 7 ft.

$$

PKZ173-210015-
Nikolski to Seguam Island Bering Side-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 25 kt becoming SE 40 kt in the afternoon. Seas
10 ft. Rain.
.TONIGHT...SE wind 40 kt becoming S 15 kt after midnight. Seas
11 ft.
.THU...Variable wind 10 kt becoming NW 15 kt in the afternoon.
Seas 10 ft.
.THU NIGHT...N wind 30 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 12 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SUN...S wind 25 kt. Seas 8 ft.

$$

PKZ174-210015-
Nikolski to Seguam Island Pacific Side-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE wind 30 kt increasing to 40 kt in the afternoon. Seas
11 ft. Rain.
.TONIGHT...S wind 40 kt diminishing to 20 kt after midnight. Seas
11 ft.
.THU...E wind 15 kt becoming NW in the afternoon. Seas 18 ft.
.THU NIGHT...NW wind 30 kt. Seas 17 ft.
.FRI...NW wind 30 kt. Seas 14 ft.
.SAT...W wind 25 kt. Seas 10 ft.
.SUN...S wind 25 kt. Seas 10 ft.

$$

PKZ175-210015-
Seguam Island to Adak Bering Side-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING TODAY...

.TODAY...E wind 45 kt. Seas 13 ft. Rain.
.TONIGHT...SE wind 30 kt becoming NE 15 kt after midnight. Seas 11 
ft.
.THU...N wind 30 kt. Seas 11 ft. Rain.
.THU NIGHT...N wind 30 kt. Seas 12 ft.
.FRI...NW wind 30 kt. Seas 12 ft.
.SAT...SW wind 20 kt. Seas 7 ft.
.SUN...S wind 25 kt. Seas 8 ft.

$$

PKZ176-210015-
Seguam Island to Adak Pacific Side-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING TODAY AND THURSDAY...

.TODAY...SE wind 45 kt. Seas 13 ft. Rain.
.TONIGHT...S wind 25 kt becoming variable 15 after midnight. Seas 16
ft.
.THU...NW wind 35 kt. Seas 17 ft. Rain.
.THU NIGHT...NW wind 35 kt. Seas 16 ft.
.FRI...NW wind 35 kt. Seas 13 ft.
.SAT...SW wind 20 kt. Seas 7 ft.
.SUN...S wind 25 kt. Seas 12 ft.

$$

PKZ177-210015-
Adak to Kiska-
337 AM AKDT Wed Apr 20 2022

...STORM WARNING TODAY...

.TODAY...Bering side, E wind 50 kt. Pac side, SE wind 50 kt
becoming S 30 kt in the afternoon. Seas 16 ft. Rain and snow.
.TONIGHT...NE wind 40 kt. Seas 17 ft. Rain showers and snow.
.THU...NW wind 40 kt. Seas 17 ft.
.THU NIGHT...NW wind 30 kt. Seas 13 ft.
.FRI...W wind 30 kt. Seas 10 ft.
.SAT...S wind 30 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 12 ft.

$$

PKZ178-210015-
Kiska to Attu-
337 AM AKDT Wed Apr 20 2022

...STORM WARNING THROUGH TONIGHT...

.TODAY...N wind 50 kt. Seas 19 ft. Rain and snow.
.TONIGHT...N wind 50 kt in the evening diminishing to 45 kt. Seas 19
ft.
.THU...NW wind 35 kt. Seas 15 ft.
.THU NIGHT...NW wind 25 kt. Seas 10 ft.
.FRI...SW wind 20 kt. Seas 8 ft.
.SAT THROUGH SUN...S wind 30 kt. Seas 13 ft.

$$

PKZ179-210015-
Pribilof Islands Near Shore Waters-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY...

.TODAY...E wind 20 kt. Seas 7 ft.
.TONIGHT...E wind 30 kt. Seas 10 ft. Snow.
.THU...E wind 35 kt. Seas 12 ft. Snow and rain.
.THU NIGHT...NE wind 30 kt. Seas 13 ft.
.FRI...N wind 30 kt. Seas 12 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...S wind 20 kt. Seas 6 ft.

$$

PKZ180-210015-
Kuskokwim Delta and Etolin Strait-
337 AM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY...

.TODAY...SE wind 10 kt. Seas 4 ft.
.TONIGHT...E wind 25 kt. Seas 6 ft.
.THU...E wind 40 kt. Seas 11 ft.
.THU NIGHT...NE wind 40 kt. Seas 11 ft.
.FRI...N wind 30 kt. Seas 8 ft.
.SAT...NW wind 15 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 4 ft.

$$

PKZ181-210015-
North and West of Nunivak Island-
337 AM AKDT Wed Apr 20 2022

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...Variable wind 10 kt. Seas 2 ft.
.TONIGHT...E wind 25 kt. Seas 4 ft. Freezing spray.
.THU...E wind 30 kt. Seas 7 ft. Freezing spray.
.THU NIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 3 ft.
.SUN...E wind 15 kt. Seas 2 ft.

$$

PKZ185-210015-
Saint Matthew Island Waters-
337 AM AKDT Wed Apr 20 2022

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY...

.TODAY...Variable wind 10 kt becoming E 15 kt in the afternoon.
Seas in ice free waters 5 ft.
.TONIGHT...NE wind 25 kt. Seas in ice free waters 5 ft.
.THU...NE wind 25 kt. Seas in ice free waters 6 ft.
.THU NIGHT...NE wind 20 kt. Seas in ice free waters 6 ft.
.FRI...NW wind 20 kt. Seas in ice free waters 5 ft.
.SAT...W wind 15 kt. Seas in ice free waters 3 ft.
.SUN...E wind 25 kt. Seas in ice free waters 8 ft.

$$

254 
FZAK52 PAFC 202337
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
337 PM AKDT Wed Apr 20 2022

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.

PKZ199-211300-
337 PM AKDT Wed Apr 20 2022
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 963 mb low 72 nm South of Kiska weakens to 977 mb as it moves 
to 192 nm South of Castle Cape by Fri afternoon. Its front pushes 
over the Aleutians into the Gulf of Alaska for Fri afternoon. 

$$

PKZ150-211300-
South of the AK Peninsula Sitkinak to Castle Cape-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...SE wind 15 kt increasing to 30 kt after midnight. Seas
9 ft.
.THU...E wind 40 kt. Seas 15 ft. Rain.
.THU NIGHT...SE wind 35 kt. Seas 14 ft. Rain.
.FRI AND FRI NIGHT...NE wind 20 kt. Seas 14 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 10 ft.
.MON...SW wind 15 kt. Seas 6 ft.

$$

PKZ155-211300-
South of the AK Peninsula Castle Cape to Cape Sarichef-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...SE wind 25 kt increasing to 35 kt after midnight. Seas
10 ft. Rain.
.THU...SE wind 35 kt becoming S 25 kt in the afternoon. From the
Shumagin Islands E, SE wind 40 kt. Seas 13 ft. Rain.
.THU NIGHT...SE wind 15 kt. Seas 11 ft building to 16 ft after
midnight.
.FRI...NE wind 15 kt. Seas 17 ft.
.FRI NIGHT...NW wind 20 kt. Seas 12 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.MON...SW wind 20 kt. Seas 7 ft.

$$

PKZ160-211300-
Bristol Bay-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...E wind 15 kt increasing to 25 kt after midnight. Seas
4 ft.
.THU...E wind 35 kt. Seas 8 ft.
.THU NIGHT...E wind 35 kt. Seas 8 ft.
.FRI...E wind 30 kt. Seas 5 ft.
.FRI NIGHT...NE wind 20 kt. Seas 2 ft.
.SAT...NW wind 15 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 4 ft.
.MON...SE wind 10 kt. Seas 3 ft.

$$

PKZ165-211300-
Port Heiden to Cape Sarichef-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...E wind 30 kt increasing to 35 kt after midnight. Seas 7 
ft. Rain and snow.
.THU...E wind 40 kt. Seas 10 ft. Rain and snow.
.THU NIGHT...E wind 30 kt diminishing to 20 kt after midnight.
From Port Moller E, E wind 40 kt diminishing to 25 kt after 
midnight. Seas 11 ft.
.FRI...NE wind 25 kt. Seas 8 ft.
.FRI NIGHT...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 25 kt. Seas 6 ft.
.SUN...W wind 20 kt. Seas 4 ft.
.MON...SE wind 15 kt. Seas 6 ft.

$$

PKZ170-211300-
Cape Sarichef to Nikolski Bering Side-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 40 kt. Seas 10 ft. Rain.
.THU...SE wind 30 kt in the morning becoming variable 10 kt. Seas
9 ft.
.THU NIGHT...N wind 20 kt. Seas 8 ft.
.FRI...N wind 30 kt. Seas 11 ft.
.FRI NIGHT...NW wind 25 kt. Seas 10 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN...S wind 25 kt. Seas 6 ft.
.MON...SW wind 20 kt. Seas 7 ft.

$$

PKZ171-211300-
Unalaska Bay-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 30 kt increasing to 40 kt after midnight. Seas
5 ft. Rain and snow.
.THU...S wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 3 ft.
.FRI...NW wind 20 kt. Seas 6 ft.
.FRI NIGHT...NW wind 25 kt. Seas 8 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-211300-
Cape Sarichef to Nikolski Pacific Side-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 40 kt. Seas 11 ft. Rain.
.THU...SE wind 20 kt. Seas 14 ft.
.THU NIGHT...N wind 15 kt. Seas 18 ft.
.FRI...NW wind 25 kt. Seas 16 ft.
.FRI NIGHT...NW wind 30 kt. Seas 12 ft.
.SAT...W wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 8 ft.

$$

PKZ173-211300-
Nikolski to Seguam Island Bering Side-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 40 kt becoming S 20 kt after midnight. Seas
11 ft. Rain.
.THU...Variable wind 10 kt becoming N 15 kt in the afternoon. Seas
10 ft.
.THU NIGHT...N wind 30 kt. Seas 11 ft.
.FRI AND FRI NIGHT...NW wind 30 kt. Seas 12 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SUN...S wind 25 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 8 ft.

$$

PKZ174-211300-
Nikolski to Seguam Island Pacific Side-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TONIGHT...S wind 40 kt diminishing to 20 kt after midnight. Seas
11 ft.
.THU...E wind 20 kt becoming N in the afternoon. Seas 18 ft.
.THU NIGHT...NW wind 20 kt increasing to 30 kt after midnight.
Seas 18 ft.
.FRI AND FRI NIGHT...NW wind 30 kt. Seas 14 ft.
.SAT...W wind 20 kt. Seas 9 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 10 ft.

$$

PKZ175-211300-
Seguam Island to Adak Bering Side-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt becoming SW 15 kt after midnight. Seas
12 ft.
.THU...N wind 30 kt. Seas 10 ft. Rain.
.THU NIGHT...NW wind 30 kt. Seas 12 ft.
.FRI...NW wind 30 kt. Seas 12 ft.
.FRI NIGHT...W wind 20 kt. Seas 10 ft.
.SAT...SW wind 20 kt. Seas 7 ft.
.SUN...S wind 25 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 8 ft.

$$

PKZ176-211300-
Seguam Island to Adak Pacific Side-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...S wind 25 kt becoming NE after midnight. Seas 16 ft.
.THU...NW wind 35 kt. Seas 17 ft.
.THU NIGHT...NW wind 35 kt. Seas 16 ft.
.FRI...NW wind 30 kt. Seas 13 ft.
.FRI NIGHT...W wind 25 kt. Seas 9 ft.
.SAT...SW wind 20 kt. Seas 7 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 12 ft.

$$

PKZ177-211300-
Adak to Kiska-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...NE wind 40 kt. Seas 17 ft.  and snow.
.THU...NW wind 40 kt. Seas 17 ft.
.THU NIGHT...NW wind 35 kt. Seas 13 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.FRI NIGHT...SW wind 15 kt. Seas 7 ft.
.SAT...S wind 30 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 12 ft.
.MON...SW wind 25 kt. Seas 12 ft.

$$

PKZ178-211300-
Kiska to Attu-
337 PM AKDT Wed Apr 20 2022

...STORM WARNING TONIGHT...

.TONIGHT...N wind 50 kt in the evening diminishing to 45 kt. Seas 19
ft.
.THU...NW wind 35 kt. Seas 15 ft.
.THU NIGHT...NW wind 25 kt. Seas 9 ft.
.FRI AND FRI NIGHT...SW wind 15 kt. Seas 8 ft.
.SAT THROUGH SUN...S wind 30 kt. Seas 13 ft.
.MON...S wind 25 kt. Seas 14 ft.

$$

PKZ179-211300-
Pribilof Islands Near Shore Waters-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...E wind 35 kt. Seas 10 ft. Snow.
.THU...E wind 35 kt. Seas 12 ft. Snow and rain.
.THU NIGHT...NE wind 30 kt. Seas 13 ft.
.FRI...N wind 25 kt. Seas 12 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...S wind 20 kt. Seas 6 ft.
.MON...SW wind 15 kt. Seas 6 ft.

$$

PKZ180-211300-
Kuskokwim Delta and Etolin Strait-
337 PM AKDT Wed Apr 20 2022

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...E wind 25 kt. Seas 6 ft.
.THU...E wind 40 kt. Seas 11 ft.
.THU NIGHT...E wind 40 kt. Seas 12 ft. Rain.
.FRI...NE wind 30 kt. Seas 8 ft.
.FRI NIGHT...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 3 ft.
.SUN...W wind 15 kt. Seas 4 ft.
.MON...E wind 15 kt. Seas 5 ft.

$$

PKZ181-211300-
North and West of Nunivak Island-
337 PM AKDT Wed Apr 20 2022

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

.TONIGHT...E wind 25 kt. Seas 4 ft. Freezing spray.
.THU...E wind 30 kt. Seas 7 ft. Freezing spray in the morning.
.THU NIGHT...NE wind 25 kt. Seas 6 ft. Freezing spray.
.FRI AND FRI NIGHT...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 3 ft.
.SUN...E wind 15 kt. Seas 2 ft.
.MON...NE wind 15 kt. Seas 4 ft.

$$

PKZ185-211300-
Saint Matthew Island Waters-
337 PM AKDT Wed Apr 20 2022

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NE wind 25 kt. Seas in ice free waters 5 ft. Freezing
spray.
.THU...NE wind 30 kt E of Saint Matthew Island... NE 25 kt W of
Saint Matthew Island. Seas in ice free waters 6 ft. Freezing spray in
the morning
.THU NIGHT...NE wind 20 kt. Seas in ice free waters 6 ft. Freezing
spray.
.FRI...N wind 20 kt. Seas in ice free waters 5 ft.
.FRI NIGHT...NW wind 15 kt. Seas in ice free waters 3 ft.
.SAT...W wind 15 kt. Seas in ice free waters 3 ft.
.SUN...E wind 25 kt. Seas in ice free waters 8 ft.
.MON...NE wind 15 kt. Seas in ice free waters 8 ft.

$$

247 
FZAK52 PAFC 211121
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
321 AM AKDT Thu Apr 21 2022

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.

PKZ199-220015-
321 AM AKDT Thu Apr 21 2022
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 966 mb low 220 nm south of Nikolski this afternoon weakens to 
975 mb and moves to 225 nm south of Castle Cape by Fri afternoon.
Its front pushes over the Aleutians into the Gulf of Alaska
through Fri afternoon. High pressure moves into the western Bering
Fri afternoon.

$$

PKZ150-220015-
South of the AK Peninsula Sitkinak to Castle Cape-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE wind 40 kt. Seas 14 ft. Rain and snow.
.TONIGHT...SE wind 35 kt. W of Chirikof Island, S wind 20 kt. Seas 
13 ft. Rain and snow.
.FRI...E wind 20 kt. Seas 14 ft.
.FRI NIGHT...NE wind 20 kt. Seas 14 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 10 ft.
.MON...SW wind 15 kt. Seas 6 ft.

$$

PKZ155-220015-
South of the AK Peninsula Castle Cape to Cape Sarichef-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt becoming S 25 kt in the afternoon. From the
Shumagin Islands E, SE wind 40 kt. Seas 13 ft. Rain showers.
.TONIGHT...E wind 20 kt. Seas 15 ft.
.FRI...NE wind 20 kt. Seas 17 ft.
.FRI NIGHT...NW wind 20 kt. Seas 12 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 9 ft.
.MON...SW wind 20 kt. Seas 8 ft.

$$

PKZ160-220015-
Bristol Bay-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 30 kt increasing to 40 kt in the afternoon. Higher
gusts out of bays and passes. Seas 8 ft.
.TONIGHT...E wind 40 kt diminishing to 30 kt after midnight. Seas
8 ft.
.FRI...E wind 25 kt. Seas 5 ft.
.FRI NIGHT...NE wind 15 kt. Seas 2 ft.
.SAT...NW wind 15 kt. Seas 2 ft.
.SUN...W wind 15 kt. Seas 3 ft.
.MON...S wind 15 kt. Seas 3 ft.

$$

PKZ165-220015-
Port Heiden to Cape Sarichef-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 40 kt. Seas 11 ft. Rain and snow.
.TONIGHT...SE wind 25 kt becoming NE 15 kt after midnight. From
Port Moller E, E wind 40 kt diminishing to 25 kt after midnight. 
Seas 11 ft.
.FRI...NE wind 15 kt. Seas 6 ft.
.FRI NIGHT...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 5 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...S wind 20 kt. Seas 4 ft.

$$

PKZ170-220015-
Cape Sarichef to Nikolski Bering Side-
321 AM AKDT Thu Apr 21 2022

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SE wind 30 kt in the morning becoming variable 10 kt. Seas 
9 ft.
.TONIGHT...N wind 15 kt. Seas 8 ft.
.FRI...N wind 25 kt. Seas 9 ft.
.FRI NIGHT...NW wind 25 kt. Seas 9 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 6 ft.

$$

PKZ171-220015-
Unalaska Bay-
321 AM AKDT Thu Apr 21 2022

.TODAY...S wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.TONIGHT...Variable wind less than 10 kt. Seas 3 ft.
.FRI...NW wind 10 kt increasing to 20 kt in the afternoon. Seas
4 ft. Snow and rain.
.FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...SW wind 20 kt. Seas 2 ft.

$$

PKZ172-220015-
Cape Sarichef to Nikolski Pacific Side-
321 AM AKDT Thu Apr 21 2022

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...S wind 20 kt. Seas 14 ft.
.TONIGHT...N wind 15 kt. Seas 18 ft.
.FRI...NW wind 15 kt. W of Unalaska, wind increases to 25 kt in the 
afternoon. Seas 16 ft.
.FRI NIGHT...NW wind 25 kt. Seas 11 ft.
.SAT...NW wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 8 ft.

$$

PKZ173-220015-
Nikolski to Seguam Island Bering Side-
321 AM AKDT Thu Apr 21 2022

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...Variable wind 10 kt becoming NW 15 kt in the afternoon.
Seas 10 ft.
.TONIGHT...N wind 30 kt. Seas 11 ft.
.FRI...N wind 30 kt. Seas 12 ft.
.FRI NIGHT...NW wind 25 kt. Seas 11 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 9 ft.
.MON...SW wind 25 kt. Seas 7 ft.

$$

PKZ174-220015-
Nikolski to Seguam Island Pacific Side-
321 AM AKDT Thu Apr 21 2022

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...E wind 15 kt becoming N in the afternoon. Seas 18 ft.
.TONIGHT...NW wind 20 kt increasing to 30 kt after midnight. Seas
18 ft. Rain and snow.
.FRI...NW wind 30 kt. Seas 15 ft.
.FRI NIGHT...NW wind 30 kt. Seas 13 ft.
.SAT...W wind 25 kt. Seas 9 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas 12 ft.

$$

PKZ175-220015-
Seguam Island to Adak Bering Side-
321 AM AKDT Thu Apr 21 2022

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...N wind 30 kt. Seas 11 ft. Rain.
.TONIGHT...NW wind 30 kt. Seas 12 ft.
.FRI...NW wind 30 kt. Seas 11 ft.
.FRI NIGHT...NW wind 20 kt. Seas 9 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SUN...S wind 30 kt. Seas 8 ft.
.MON...SW wind 25 kt. Seas 8 ft.

$$

PKZ176-220015-
Seguam Island to Adak Pacific Side-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 35 kt. Seas 17 ft.
.TONIGHT...NW wind 35 kt. Seas 16 ft.
.FRI...NW wind 30 kt. Seas 13 ft.
.FRI NIGHT...NW wind 25 kt. Seas 9 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SUN...S wind 30 kt. Seas 12 ft.
.MON...SW wind 25 kt. Seas 13 ft.

$$

PKZ177-220015-
Adak to Kiska-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 40 kt. Seas 17 ft.
.TONIGHT...NW wind 35 kt. Seas 13 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.FRI NIGHT...W wind 15 kt. Seas 7 ft.
.SAT...S wind 30 kt. Seas 9 ft.
.SUN THROUGH MON...S wind 30 kt. Seas 14 ft.

$$

PKZ178-220015-
Kiska to Attu-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 15 ft.
.TONIGHT...NW wind 25 kt becoming W 15 kt after midnight. Seas
10 ft.
.FRI...W wind 15 kt. Seas 8 ft.
.FRI NIGHT...SW wind 15 kt. Seas 7 ft.
.SAT...S wind 30 kt. Seas 12 ft.
.SUN THROUGH MON...S wind 30 kt. Seas 16 ft.

$$

PKZ179-220015-
Pribilof Islands Near Shore Waters-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING TODAY...

.TODAY...E wind 35 kt. Seas 12 ft. Snow and rain.
.TONIGHT...NE wind 30 kt. Seas 13 ft.
.FRI...N wind 25 kt. Seas 11 ft.
.FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT...NW wind 20 kt. Seas 6 ft.
.SUN THROUGH MON...S wind 25 kt. Seas 8 ft.

$$

PKZ180-220015-
Kuskokwim Delta and Etolin Strait-
321 AM AKDT Thu Apr 21 2022

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 40 kt. Seas 12 ft.
.TONIGHT...E wind 40 kt. Seas 12 ft. Snow.
.FRI...NE wind 25 kt. Seas 8 ft.
.FRI NIGHT...N wind 20 kt. Seas 4 ft.
.SAT...NW wind 20 kt. Seas 3 ft.
.SUN...SW wind 20 kt. Seas 3 ft.
.MON...S wind 20 kt. Seas 4 ft.

$$

PKZ181-220015-
North and West of Nunivak Island-
321 AM AKDT Thu Apr 21 2022

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...E wind 30 kt. Seas 7 ft. Freezing spray.
.TONIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.FRI NIGHT...N wind 20 kt. Seas 5 ft.
.SAT...NW wind 20 kt. Seas 3 ft.
.SUN THROUGH MON...SE wind 20 kt. Seas 4 ft.

$$

PKZ185-220015-
Saint Matthew Island Waters-
321 AM AKDT Thu Apr 21 2022

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas in ice free waters 6 ft.
.TONIGHT...NE wind 20 kt. Seas in ice free waters 6 ft.
.FRI...N wind 20 kt E of Saint Matthew Island...N 10 kt W of Saint 
Matthew Island. Seas in ice free waters 5 ft.
.FRI NIGHT...NW wind 15 kt. Seas in ice free waters 3 ft.
.SAT...W wind 15 kt. Seas in ice free waters 3 ft.
.SUN...E wind 30 kt. Seas in ice free waters 8 ft.
.MON...SE wind 20 kt. Seas in ice free waters 8 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
420 PM AKDT Mon Apr 18 2022

.ANALYSIS AND UPPER LEVELS...
The main weather feature remains the large low centered near
Unimak Pass this afternoon. The front over the Alaska Peninsula is
producing southeasterly gusts in the 35 to 50 mph range with wind
gusts farther west over the central Aleutians around 45 to 60 mph.
Effects of this system reach the western Gulf of Alaska where
easterly flow is brining in some clouds and a few snow and rain
showers to Kodiak Island today.

The upper level pattern over mainland Alaska has shifted a little
since late last week with the 500 mb ridge now closed off along
the Arctic coast and a weak upper low in the Northeast Gulf of
Alaska. This upper low will strengthen a little and drift westward
the next few days. Some of the change in seasons can be seen over
the western Kenai Peninsula where the land is heating enough to
cause some fair-weather cumulus clouds to develop as until they
reach the colder waters of Cook Inlet and then dissipate again.

&&

.MODEL DISCUSSION...
Models remain in good synoptic agreement through the week. The
main differences in the ALeutians during the middle of the week
are beginning to resolve in the latest model runs. A newer feature
that is creeping into the second half of the week in Southcentral
is a 500 mb closed low moving in from the east. This was
indicated as an open wave earlier, but models are all now
indicating it will be a little stronger and be a closed upper
level low for Wednesday night into Friday so that is a little bit
of a change that could bring in clouds and a greater chance for
some showers as well.

&&

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

&&

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

Relatively quiet weather conditions are expected to persist across
much of the region for the next few days. With generally clear
skies and weak daytime heating, a light afternoon/evening sea
breeze is expected to occur for Kachemak Bay today, Wednesday and
Thursday. Onshore flow persists for the southeastern side of
Kodiak Island and is associated with a strong system out west over
the Aleutians. Thus, there are increased chances for
precipitation for southeastern Kodiak Island as a result of
southeasterly upslope flow against the mountains accompanied by
some weak disturbances aloft. As the Aleutian system tracks into
the southern Gulf through Wednesday and surface winds shift more
northeasterly, chances for precipitation decrease for the island.

At upper levels, a ridge of high pressure that has dominated the
region for the past few days is now being replaced by a series of
easterly waves and general low pressure. Lingering high pressure
over northern Alaska has created a weak offshore gradient with the
low pressure across Southcentral, yielding blustery northeasterly
winds through areas like Thompson Pass and the Matanuska Valley.
Offshore flow is expected to diminish on Wednesday as the high
pressure moves farther northward and the area of low pressure
with embedded disturbances spreads across the southern mainland.
This feature will essentially rotate over southern Alaska through
Thursday, and light isolated showers are possible across the
region.

The next feature of note is a front extending from a deep North
Pacific low. The front will push northeastward into the Gulf and
reach Kodiak Island late Thursday night. With this system,
precipitation at the surface is expected to be rain, and it will
spread across Kodiak Island and the north Gulf coast into the
weekend.

&&

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

A fairly tantamount weather pattern is expected over the
Southwest for the next couple days. Southeasterly winds and cloud
cover will persist along the coast with brief showers possible
over northern Bristol Bay and into the Kuskokwim Mountains. High
temperatures will be in the 40s with temperatures lowering to the
30s to upper 20s at night.

Tuesday will mark the beginning of a pattern change for the area
due to an easterly wave over Southcentral tracking over the
region. The forcing from this wave and daytime heating should be
enough to generate a few showers over higher terrain Tuesday
afternoon/evening. After the easterly wave passes through the
region, clearing skies and a more pronounced diurnal trend in
temperatures is expected.

&&

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

Active weather persists across the Bering Sea and Aleutians for
the next few days as a strong vertically-stacked low dominates
the area. The aforementioned low will exit north of Nikolski and
slowly track eastward with the center moving just south of the
Alaska Peninsula tonight. On the backside of the low, strong
northwesterlies are extending over the Central Aleutians with the
core of the strong winds slowly moving east towards the Eastern
Aleutians through today. High winds were observed this morning
over Atka with gusts reaching up to 63 mph.

The weather will quiet down briefly Tuesday before another
gale force North Pacific low moves near the Central to Western
Aleutians. Gale force winds with storm force gusts will impact the
Central Aleutians Wednesday as the low skirts just below the
Chain. Winds will diminish fairly quickly Wednesday evening, but
rain will sweep across the Chain along the storm's front starting
over the Western Aleutians and working its way eastward into the
Alaska Peninsula by Thursday.

&&

.Marine (Days 3 through 5: Thursday through Saturday)...
Gulf of Alaska: A deepening low pressure system will move
a weather front from the western Gulf Thursday to the northern
Gulf Friday. Easterly winds of 20 to 30 kt will develop Thursday
with low end gales up to 40 kt possible from the Barren Islands to
Kayak Island for Friday into early Saturday morning as a barrier
jet forms ahead of the front. Expect waves along the northern
Gulf to build to around 10 to 15 ft along the northern Gulf for
Friday in association with the gales. Forecast confidence for this
outlook is high.

Bering Sea: A north Pacific low south of the Aleutian Chain will
move east into the western Gulf through Friday. An accompanying
weather front will cross the eastern Aleutians and AKPen Thursday
before exiting the region Friday. Widespread high end small craft,
to low end Gales will extend as far north as the Pribilof Islands
and extend into Bristol Bay by Friday. Northwesterly gales are
expected along the backside of this low, with the core of these
winds channeled through the central and eastern Aleutians. Seas of
15 to 20 ft are expected across the southern Bering with seas of
20 to 25 ft possible on the Pacific side of the central and
eastern Aleutians through Friday morning. Seas will subside to 10
ft or less late Friday through Saturday. Forecast confidence for
this outlook is high.

&&

Long Term Discussion (Days 4 through 7: Friday through Monday)...
An upper-level ridge over the northern half of the state will
weaken and shift to the southwest as an upper-level low moves east
from the Aleutians and extends a shortwave north toward the
Southern Mainland. At the surface, this translates to a weakening
of the ridge over the state as a surface low moves from south of
the eastern Aleutians Friday to the southern Gulf of Alaska late
Saturday through Sunday. An occluded front attached to the low
will sweep across the western and northern Gulf, bringing an
increase in rain and winds first along the AKPen and Kodiak Island
Friday then along the Southcentral coast through Saturday. Weak
ridging out ahead and north of this system, along with a cross-
barrier flow, should limit precipitation for inland locations,
although an increase in cloud cover through the weekend is likely.
This system then weakens and drifts southward late Sunday into
Monday with a general clearing trend from north to south across
the region.

Farther west, a ridge will build across the Bering and Aleutians
through the weekend in the wake of the low, resulting in a cool,
northerly flow across the Aleutian Chain. The ridge extends over
the western half of the state by Sunday and over the Southern
Mainland for Monday. A weak upper-level wave and associated
frontal system tries to move over the top of the ridge by Monday
with scattered precipitation for the Kuskokwim Delta possible. A
second weak surface low may impact the western Aleutians and
Bering for Monday as the ridge moves over the Mainland.

Temperatures across the region are expected to remain around average,
but will warm through the latter half of the weekend as the ridge
moves over the state and any lingering cloud cover from the Gulf
low diminishes.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Storm Warning 170 172-174
         Gale Warning 150 155 160 165 171 175-178 180 412-414
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...EZ
SOUTHCENTRAL ALASKA...AF
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...NS
MARINE/LONG TERM...TM