Gale Warning 339, NWS Anchorage, AK

181 
FZAK52 PAFC 241148
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
348 AM AKDT Tue Apr 24 2018

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.

PKZ199-250100-
348 AM AKDT Tue Apr 24 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 971 mb low 220 nm north of Atka moves to 75 nm south of Mekoryuk 
at 985 mb dissipating Wed morning. A 976 mb low 70 nm southwest of 
Kipnuk moves over St Matthew Island at 970 mb Tue evening then shifts
to 75 nm North of Gambell at 990 mb for Thu morning. A front over 
the Alaska Peninsula moves into the Western Gulf of Alaska by Wed 
morning.

$$

PKZ150-250100-
South of the AK Peninsula Sitkinak to Castle Cape-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 20 ft.
.TONIGHT...SW wind 30 kt. Seas 18 ft.
.WED...SW wind 30 kt. Seas 18 ft. Rain showers.
.WED NIGHT...SW wind 25 kt. Seas 15 ft.
.THU...SW wind 20 kt. Seas 13 ft.
.FRI THROUGH SAT...SW wind 20 kt. Seas 10 to 12 ft.

$$

PKZ155-250100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 35 kt. Seas 21 ft. Rain and snow showers.
.TONIGHT...SW wind 35 kt. Seas 21 ft. Rain showers.
.WED...SW wind 30 kt. Seas 21 ft. Rain showers.
.WED NIGHT...SW wind 25 kt. Seas 16 ft.
.THU...SW wind 20 kt. Seas 12 ft.
.FRI THROUGH SAT...SW wind 25 kt. Seas 13 ft.

$$

PKZ160-250100-
Bristol Bay-
348 AM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...S wind 30 kt. Seas 11 ft.
.WED...S wind 30 kt. Seas 11 ft.
.WED NIGHT...S wind 20 kt. Seas 8 ft.
.THU...SW wind 25 kt. Seas 7 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT...S wind 15 kt. Seas 7 ft.

$$

PKZ165-250100-
Port Heiden to Cape Sarichef-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TODAY...SW wind 30 kt. Seas 14 ft.
.TONIGHT...S wind 40 kt. Seas 17 ft.
.WED...SW wind 30 kt. Seas 14 ft.
.WED NIGHT...SW wind 25 kt. Seas 10 ft.
.THU THROUGH FRI...SW wind 25 kt. Seas 11 to 13 ft.
.SAT...S wind 20 kt. Seas 12 ft.

$$

PKZ170-250100-
Cape Sarichef to Nikolski Bering Side-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 30 kt increasing to 40 kt in the afternoon. 
Seas 16 ft. Rain showers and snow showers.
.TONIGHT...SW wind 40 kt diminishing to 30 kt after midnight. 
Seas 17 ft. Rain showers.
.WED...SW wind 30 kt. Seas 13 ft. Rain showers.
.WED NIGHT...W wind 20 kt. Seas 10 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.FRI THROUGH SAT...S wind 25 kt. Seas 12 to 14 ft.

$$

PKZ171-250100-
Unalaska Bay-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TODAY...SW wind increasing to 30 kt. Gusts up to 40 kt increasing 
to 50 kt in the afternoon. Seas 5 ft. Rain showers.
.TONIGHT...SW wind 35 kt diminishing to 25 kt by midnight. 
Seas 5 ft. Rain showers.
.WED...SW wind 20 kt. Seas 3 ft. Rain showers.
.WED NIGHT...W wind 20 kt. Seas 3 ft.
.THU...SW wind 15 kt. Seas 2 ft.
.FRI...SW wind 20 kt. Seas 3 ft.
.SAT...S wind 15 kt. Seas 2 ft.

$$

PKZ172-250100-
Cape Sarichef to Nikolski Pacific Side-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt. Seas 22 ft. Rain showers and snow showers.
.TONIGHT...SW wind 40 kt. Seas 23 ft. Rain showers.
.WED...SW wind 30 kt. Seas 20 ft.
.WED NIGHT...W wind 25 kt. Seas 15 ft.
.THU...W wind 20 kt. Seas 11 ft.
.FRI THROUGH SAT...SW wind 25 kt. Seas 14 to 15 ft.

$$

PKZ173-250100-
Nikolski to Seguam Island Bering Side-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 30 kt increasing to 40 kt in the afternoon. 
Seas 16 ft. Rain showers.
.TONIGHT...W wind 35 kt decreasing to 30 kt by midnight. Seas 18 ft.
Rain showers.
.WED...W wind 30 kt. Seas 14 ft.  and snow showers.
.WED NIGHT...W wind 25 kt. Seas 11 ft.
.THU THROUGH FRI...SW wind 30 kt. Seas 12 to 14 ft.
.SAT...SW wind 20 kt. Seas 11 ft.

$$

PKZ174-250100-
Nikolski to Seguam Island Pacific Side-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt. Seas 23 ft. Rain showers and snow showers.
.TONIGHT...SW wind 40 kt becoming W 30 kt after midnight. 
Seas 23 ft. Rain showers.
.WED...W wind 25 kt. Seas 18 ft.
.WED NIGHT...W wind 25 kt. Seas 13 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.FRI...SW wind 30 kt. Seas 17 ft.
.SAT...SW wind 25 kt. Seas 15 ft.

$$

PKZ175-250100-
Seguam Island to Adak Bering Side-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 15 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 14 ft. Rain showers.
.WED...W wind 25 kt. Seas 12 ft.
.WED NIGHT...W wind 25 kt. Seas 10 ft.
.THU THROUGH FRI...SW wind 35 kt. Seas 13 to 15 ft.
.SAT...SW wind 20 kt. Seas 9 ft.

$$

PKZ176-250100-
Seguam Island to Adak Pacific Side-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...W wind 45 kt. Seas 23 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 22 ft.
.WED...W wind 25 kt. Seas 16 ft.
.WED NIGHT...W wind 25 kt. Seas 12 ft.
.THU...SW wind 35 kt. Seas 12 ft.
.FRI...SW wind 35 kt. Seas 18 ft.
.SAT...SW wind 20 kt. Seas 14 ft.

$$

PKZ177-250100-
Adak to Kiska-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...W wind 40 kt. Seas 21 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 18 ft.
.WED...W wind 25 kt. Seas 14 ft.
.WED NIGHT...W wind 25 kt. Seas 11 ft.
.THU THROUGH FRI...SW wind 40 kt. Seas 18 to 19 ft.
.SAT...SW wind 20 kt. Seas 14 ft.

$$

PKZ178-250100-
Kiska to Attu-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt decreasing to 25 kt in the afternoon. 
Seas 18 ft.
.TONIGHT...NW wind 25 kt. Seas 16 ft.
.WED...W wind 25 kt. Seas 12 ft.
.WED NIGHT...SW wind 30 kt. Seas 12 ft.
.THU...S wind 40 kt. Seas 19 ft.
.FRI...SW wind 35 kt. Seas 19 ft.
.SAT...SW wind 30 kt. Seas 21 ft.

$$

PKZ179-250100-
Pribilof Islands Near Shore Waters-
348 AM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...S wind 15 kt increasing to 30 kt in the afternoon. 
Seas 13 ft.
.TONIGHT...SW wind 15 kt becoming W 25 kt after midnight. 
Seas 11 ft.
.WED...W wind 20 kt. Seas 11 ft.
.WED NIGHT...W wind 20 kt. Seas 9 ft.
.THU THROUGH FRI...SW wind 25 kt. Seas 12 to 14 ft.
.SAT...SW wind 20 kt. Seas 13 ft.

$$

PKZ180-250100-
Kuskokwim Delta and Etolin Strait-
348 AM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TODAY...SW wind 20 kt becoming S 30 kt in the afternoon. 
Seas 11 ft.
.TONIGHT...S wind 35 kt. Seas 14 ft.
.WED...SW wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 14 ft.
.WED NIGHT...SW wind 20 kt. Seas 9 ft.
.THU THROUGH FRI...S wind 25 kt. Seas 9 to 11 ft.
.SAT...S wind 20 kt. Seas 11 ft.

$$

PKZ181-250100-
North and West of Nunivak Island-
348 AM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 20 kt becoming S 25 kt in the afternoon. Seas 8 ft.
.TONIGHT...S wind 25 kt. Seas 10 ft.
.WED...SW wind 25 kt. Seas 9 ft.
.WED NIGHT...SW wind 25 kt. Seas 9 ft.
.THU...SW wind 20 kt. Seas 9 ft.
.FRI THROUGH SAT...S wind 25 kt. Seas 11 to 12 ft.

$$

PKZ185-250100-
Saint Matthew Island Waters-
348 AM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 20 kt E of Saint Matthew Island...NE 30 kt W of
Saint Matthew Island. Seas 10 ft.
.TONIGHT...NW wind 25 kt. Seas 11 ft.
.WED...W wind 30 kt. Seas 12 ft.
.WED NIGHT...W wind 25 kt. Seas 11 ft.
.THU...SW wind 25 kt. Seas 11 ft.
.FRI THROUGH SAT...SW wind 25 kt. Seas 15 to 17 ft.

$$

904 
FZAK52 PAFC 241439 AAA
CWFALU

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
639 AM AKDT Tue Apr 24 2018

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.

PKZ199-250315-
639 AM AKDT Tue Apr 24 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 971 mb low 220 nm north of Atka moves to 75 nm south of Mekoryuk 
at 985 mb dissipating Wed morning. A 976 mb low 70 nm southwest of 
Kipnuk moves over St Matthew Island at 970 mb Tue evening then shifts
to 75 nm North of Gambell at 990 mb for Thu morning. A front over 
the Alaska Peninsula moves into the Western Gulf of Alaska by Wed 
morning.

$$

PKZ150-250315-
South of the AK Peninsula Sitkinak to Castle Cape-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt becoming SW 35 kt by late morning. 
Seas 20 ft.
.TONIGHT...SW wind 30 kt. Seas 18 ft. 
.WED...SW wind 30 kt. Seas 18 ft. Rain showers. 
.WED NIGHT...SW wind 25 kt. Seas 15 ft. 
.THU...SW wind 20 kt. Seas 13 ft. 
.FRI THROUGH SAT...SW wind 20 kt. Seas 10 to 12 ft.

$$

PKZ155-250315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 35 kt. Seas 21 ft. Rain and snow showers. 
.TONIGHT...SW wind 35 kt. Seas 21 ft. Rain showers. 
.WED...SW wind 30 kt. Seas 21 ft. Rain showers. 
.WED NIGHT...SW wind 25 kt. Seas 16 ft. 
.THU...SW wind 20 kt. Seas 12 ft. 
.FRI THROUGH SAT...SW wind 25 kt. Seas 13 ft.

$$

PKZ160-250315-
Bristol Bay-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt becoming SW 30 kt by late morning. 
Seas 9 ft. Rain.
.TONIGHT...S wind 30 kt. Seas 11 ft. 
.WED...S wind 30 kt. Seas 11 ft. 
.WED NIGHT...S wind 20 kt. Seas 8 ft. 
.THU...SW wind 25 kt. Seas 7 ft. 
.FRI...SW wind 20 kt. Seas 7 ft. 
.SAT...S wind 15 kt. Seas 7 ft.

$$

PKZ165-250315-
Port Heiden to Cape Sarichef-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TODAY...SW wind 30 kt. Seas 14 ft. 
.TONIGHT...S wind 40 kt. Seas 17 ft. 
.WED...SW wind 30 kt. Seas 14 ft. 
.WED NIGHT...SW wind 25 kt. Seas 10 ft. 
.THU THROUGH FRI...SW wind 25 kt. Seas 11 to 13 ft. 
.SAT...S wind 20 kt. Seas 12 ft.

$$

PKZ170-250315-
Cape Sarichef to Nikolski Bering Side-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 30 kt increasing to 40 kt in the afternoon. 
Seas 16 ft. Rain showers and snow showers. 
.TONIGHT...SW wind 40 kt diminishing to 30 kt after midnight. 
Seas 17 ft. Rain showers. 
.WED...SW wind 30 kt. Seas 13 ft. Rain showers. 
.WED NIGHT...W wind 20 kt. Seas 10 ft. 
.THU...SW wind 25 kt. Seas 10 ft. 
.FRI THROUGH SAT...S wind 25 kt. Seas 12 to 14 ft.

$$

PKZ171-250315-
Unalaska Bay-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TODAY...SW wind increasing to 30 kt. Gusts up to 40 kt
increasing  to 50 kt in the afternoon. Seas 5 ft. Rain showers. 
.TONIGHT...SW wind 35 kt diminishing to 25 kt by midnight.  
Seas 5 ft. Rain showers. 
.WED...SW wind 20 kt. Seas 3 ft. Rain showers. 
.WED NIGHT...W wind 20 kt. Seas 3 ft. 
.THU...SW wind 15 kt. Seas 2 ft. 
.FRI...SW wind 20 kt. Seas 3 ft. 
.SAT...S wind 15 kt. Seas 2 ft.

$$

PKZ172-250315-
Cape Sarichef to Nikolski Pacific Side-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt. Seas 22 ft. Rain showers and snow
showers. 
.TONIGHT...SW wind 40 kt. Seas 23 ft. Rain showers. 
.WED...SW wind 30 kt. Seas 20 ft. 
.WED NIGHT...W wind 25 kt. Seas 15 ft. 
.THU...W wind 20 kt. Seas 11 ft. 
.FRI THROUGH SAT...SW wind 25 kt. Seas 14 to 15 ft.

$$

PKZ173-250315-
Nikolski to Seguam Island Bering Side-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 30 kt increasing to 40 kt in the afternoon. 
Seas 16 ft. Rain showers. 
.TONIGHT...W wind 35 kt decreasing to 30 kt by midnight. Seas
18 ft. Rain showers. 
.WED...W wind 30 kt. Seas 14 ft.  and snow showers. 
.WED NIGHT...W wind 25 kt. Seas 11 ft. 
.THU THROUGH FRI...SW wind 30 kt. Seas 12 to 14 ft. 
.SAT...SW wind 20 kt. Seas 11 ft.

$$

PKZ174-250315-
Nikolski to Seguam Island Pacific Side-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt. Seas 23 ft. Rain showers and snow
showers. 
.TONIGHT...SW wind 40 kt becoming W 30 kt after midnight.  
Seas 23 ft. Rain showers. 
.WED...W wind 25 kt. Seas 18 ft. 
.WED NIGHT...W wind 25 kt. Seas 13 ft. 
.THU...SW wind 25 kt. Seas 10 ft. 
.FRI...SW wind 30 kt. Seas 17 ft. 
.SAT...SW wind 25 kt. Seas 15 ft.

$$

PKZ175-250315-
Seguam Island to Adak Bering Side-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 15 ft. Rain showers and snow
showers. 
.TONIGHT...W wind 30 kt. Seas 14 ft. Rain showers. 
.WED...W wind 25 kt. Seas 12 ft. 
.WED NIGHT...W wind 25 kt. Seas 10 ft. 
.THU THROUGH FRI...SW wind 35 kt. Seas 13 to 15 ft. 
.SAT...SW wind 20 kt. Seas 9 ft.

$$

PKZ176-250315-
Seguam Island to Adak Pacific Side-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...W wind 45 kt. Seas 23 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 22 ft. 
.WED...W wind 25 kt. Seas 16 ft. 
.WED NIGHT...W wind 25 kt. Seas 12 ft. 
.THU...SW wind 35 kt. Seas 12 ft. 
.FRI...SW wind 35 kt. Seas 18 ft. 
.SAT...SW wind 20 kt. Seas 14 ft.

$$

PKZ177-250315-
Adak to Kiska-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...W wind 40 kt. Seas 21 ft. Rain showers and snow showers.
.TONIGHT...W wind 30 kt. Seas 18 ft. 
.WED...W wind 25 kt. Seas 14 ft. 
.WED NIGHT...W wind 25 kt. Seas 11 ft. 
.THU THROUGH FRI...SW wind 40 kt. Seas 18 to 19 ft. 
.SAT...SW wind 20 kt. Seas 14 ft.

$$

PKZ178-250315-
Kiska to Attu-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt decreasing to 25 kt in the afternoon. 
Seas 18 ft. 
.TONIGHT...NW wind 25 kt. Seas 16 ft. 
.WED...W wind 25 kt. Seas 12 ft. 
.WED NIGHT...SW wind 30 kt. Seas 12 ft. 
.THU...S wind 40 kt. Seas 19 ft. 
.FRI...SW wind 35 kt. Seas 19 ft. 
.SAT...SW wind 30 kt. Seas 21 ft.

$$

PKZ179-250315-
Pribilof Islands Near Shore Waters-
639 AM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...S wind 15 kt increasing to 30 kt in the afternoon.  
Seas 13 ft. 
.TONIGHT...SW wind 15 kt becoming W 25 kt after midnight.  
Seas 11 ft. 
.WED...W wind 20 kt. Seas 11 ft. 
.WED NIGHT...W wind 20 kt. Seas 9 ft. 
.THU THROUGH FRI...SW wind 25 kt. Seas 12 to 14 ft. 
.SAT...SW wind 20 kt. Seas 13 ft.

$$

PKZ180-250315-
Kuskokwim Delta and Etolin Strait-
639 AM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TODAY...SW wind 20 kt becoming S 30 kt in the afternoon.  
Seas 11 ft. 
.TONIGHT...S wind 35 kt. Seas 14 ft. 
.WED...SW wind 30 kt diminishing to 20 kt in the afternoon.  
Seas 14 ft. 
.WED NIGHT...SW wind 20 kt. Seas 9 ft. 
.THU THROUGH FRI...S wind 25 kt. Seas 9 to 11 ft. 
.SAT...S wind 20 kt. Seas 11 ft.

$$

PKZ181-250315-
North and West of Nunivak Island-
639 AM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 20 kt becoming S 25 kt in the afternoon. 
Seas 8 ft. 
.TONIGHT...S wind 25 kt. Seas 10 ft. 
.WED...SW wind 25 kt. Seas 9 ft. 
.WED NIGHT...SW wind 25 kt. Seas 9 ft. 
.THU...SW wind 20 kt. Seas 9 ft. 
.FRI THROUGH SAT...S wind 25 kt. Seas 11 to 12 ft.

$$

PKZ185-250315-
Saint Matthew Island Waters-
639 AM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 20 kt E of Saint Matthew Island...NE 30 kt 
W of Saint Matthew Island. Seas 10 ft. 
.TONIGHT...NW wind 25 kt. Seas 11 ft. 
.WED...W wind 30 kt. Seas 12 ft. 
.WED NIGHT...W wind 25 kt. Seas 11 ft. 
.THU...SW wind 25 kt. Seas 11 ft. 
.FRI THROUGH SAT...SW wind 25 kt. Seas 15 to 17 ft.

$$

675 
FZAK52 PAFC 242351
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
351 PM AKDT Tue Apr 24 2018

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.

PKZ199-251300-
351 PM AKDT Tue Apr 24 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 970 mb low 160 nm NW of Mekoryuk moves to 43 nm northwest of 
Gambell at 981 mb by Wednesday afternoon. It weakens to 994 mb 
and moves to 136 nm north of Gambell by Thursday afternoon. A 
front associated with this low extends southward across the Bering
Sea this afternoon, then moves across the Bering and onshore by 
Wednesday afternoon.

$$

PKZ150-251300-
South of the AK Peninsula Sitkinak to Castle Cape-
351 PM AKDT Tue Apr 24 2018

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

.TONIGHT...SW wind 30 kt. Seas 18 ft.
.WED...SW wind 30 kt. Seas 16 ft. Rain showers.
.WED NIGHT...SW wind 25 kt. Seas 14 ft. Rain showers.
.THU...SW wind 20 kt. Seas 12 ft.
.THU NIGHT...SW wind 25 kt. Seas 9 ft.
.FRI...SW wind 30 kt. Seas 11 ft.
.SAT...SW wind 20 kt. Seas 11 ft.
.SUN...SW wind 15 kt. Seas 11 ft.

$$

PKZ155-251300-
South of the AK Peninsula Castle Cape to Cape Sarichef-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt. Seas 20 ft. Rain showers and snow
showers.
.WED...SW wind 30 kt. Seas 20 ft. Rain showers and snow showers.
.WED NIGHT...SW wind 25 kt. Seas 16 ft.
.THU...SW wind 20 kt. Seas 11 ft.
.THU NIGHT...SW wind 30 kt. Seas 9 ft.
.FRI...SW wind 35 kt. Seas 13 ft.
.SAT...SW wind 25 kt. Seas 13 ft.
.SUN...S wind 20 kt. Seas 13 ft.

$$

PKZ160-251300-
Bristol Bay-
351 PM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...S wind 30 kt. Seas 9 ft.
.WED...S wind 30 kt. Seas 10 ft.
.WED NIGHT...S wind 20 kt. Seas 7 ft.
.THU...SW wind 20 kt. Seas 7 ft.
.THU NIGHT...S wind 30 kt. Seas 8 ft.
.FRI...SW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 8 ft.

$$

PKZ165-251300-
Port Heiden to Cape Sarichef-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...S wind 40 kt. Seas 15 ft.
.WED...SW wind 30 kt. Seas 14 ft.
.WED NIGHT...SW wind 25 kt. Seas 10 ft.
.THU...SW wind 25 kt. Seas 8 ft.
.THU NIGHT...SW wind 30 kt. Seas 12 ft.
.FRI...SW wind 35 kt. Seas 12 ft.
.SAT...S wind 25 kt. Seas 12 ft.
.SUN...S wind 20 kt. Seas 12 ft.

$$

PKZ170-251300-
Cape Sarichef to Nikolski Bering Side-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 40 kt. Seas 15 ft. Rain showers and snow
showers.
.WED...SW wind 30 kt. Seas 12 ft. Rain showers and snow showers.
.WED NIGHT...W wind 25 kt. Seas 10 ft.
.THU AND THU NIGHT...SW wind 30 kt. Seas 10 ft.
.FRI...S wind 40 kt. Seas 14 ft.
.SAT...S wind 25 kt. Seas 12 ft.
.SUN...S wind 20 kt. Seas 12 ft.

$$

PKZ171-251300-
Unalaska Bay-
351 PM AKDT Tue Apr 24 2018

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SW wind 30 kt diminishing to 20 kt after midnight. Seas
5 ft subsiding to 3 ft after midnight. Rain showers.
.WED...SW wind 20 kt. Seas 3 ft. Rain showers and snow showers.
.WED NIGHT...W wind 15 kt. Seas 2 ft.
.THU...SW wind 10 kt. Seas 2 ft.
.THU NIGHT...SW wind 15 kt. Seas 2 ft.
.FRI...S wind 25 kt. Seas 4 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 2 ft.

$$

PKZ172-251300-
Cape Sarichef to Nikolski Pacific Side-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 40 kt. Seas 22 ft. Rain showers and snow
showers.
.WED...SW wind 30 kt. Seas 20 ft. Snow showers.
.WED NIGHT...W wind 25 kt. Seas 14 ft.
.THU...W wind 20 kt. Seas 10 ft.
.THU NIGHT...SW wind 30 kt. Seas 9 ft.
.FRI...SW wind 40 kt. Seas 15 ft.
.SAT...SW wind 25 kt. Seas 14 ft.
.SUN...S wind 20 kt. Seas 14 ft.

$$

PKZ173-251300-
Nikolski to Seguam Island Bering Side-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...W wind 40 kt diminishing to 30 kt after midnight. Seas
16 ft. Rain showers and snow showers.
.WED...W wind 25 kt. Seas 13 ft. Snow showers.
.WED NIGHT...W wind 25 kt. Seas 10 ft.
.THU AND THU NIGHT...SW wind 30 kt. Seas 10 ft.
.FRI...SW wind 40 kt. Seas 13 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 12 ft.

$$

PKZ174-251300-
Nikolski to Seguam Island Pacific Side-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 40 kt becoming W 30 kt after midnight. Seas
22 ft. Rain showers.
.WED...W wind 25 kt. Seas 17 ft.
.WED NIGHT...W wind 20 kt. Seas 12 ft.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 30 kt. Seas 9 ft.
.FRI...SW wind 40 kt. Seas 16 ft.
.SAT...S wind 25 kt. Seas 15 ft.
.SUN...S wind 20 kt. Seas 14 ft.

$$

PKZ175-251300-
Seguam Island to Adak Bering Side-
351 PM AKDT Tue Apr 24 2018

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

.TONIGHT...W wind 30 kt. Seas 13 ft. Snow showers and rain
showers.
.WED...W wind 25 kt. Seas 11 ft.
.WED NIGHT...W wind 25 kt. Seas 10 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 40 kt. Seas 10 ft.
.FRI...SW wind 40 kt. Seas 14 ft.
.SAT...SW wind 20 kt. Seas 9 ft.
.SUN...SW wind 15 kt. Seas 10 ft.

$$

PKZ176-251300-
Seguam Island to Adak Pacific Side-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 22 ft. Snow and rain showers.
.WED...W wind 25 kt. Seas 15 ft.
.WED NIGHT...W wind 25 kt. Seas 11 ft.
.THU...W wind 25 kt. Seas 9 ft.
.THU NIGHT...SW wind 40 kt. Seas 11 ft.
.FRI...SW wind 40 kt. Seas 17 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 13 ft.

$$

PKZ177-251300-
Adak to Kiska-
351 PM AKDT Tue Apr 24 2018

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

.TONIGHT...W wind 30 kt. Seas 15 ft.
.WED...W wind 25 kt. Seas 11 ft.
.WED NIGHT...W wind 25 kt. Seas 10 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.THU NIGHT...S wind 45 kt. Seas 16 ft.
.FRI...SW wind 40 kt. Seas 18 ft.
.SAT...SW wind 25 kt. Seas 13 ft.
.SUN...SW wind 15 kt. Seas 15 ft.

$$

PKZ178-251300-
Kiska to Attu-
351 PM AKDT Tue Apr 24 2018

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

.TONIGHT...NW wind 25 kt. Seas 13 ft.
.WED...W wind 25 kt. Seas 11 ft.
.WED NIGHT...SW wind 30 kt. Seas 10 ft.
.THU...SW wind 30 kt. Seas 11 ft.
.THU NIGHT...S wind 40 kt. Seas 17 ft.
.FRI THROUGH SAT...SW wind 35 kt. Seas 19 ft.
.SUN...SW wind 20 kt. Seas 18 ft.

$$

PKZ179-251300-
Pribilof Islands Near Shore Waters-
351 PM AKDT Tue Apr 24 2018

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

.TONIGHT...SW wind 20 kt. Seas 10 ft.
.WED...W wind 15 kt becoming NW 25 kt in the afternoon. Seas 8 ft.
.WED NIGHT...W wind 20 kt. Seas 8 ft.
.THU AND THU NIGHT...W wind 30 kt. Seas 11 ft.
.FRI...S wind 30 kt. Seas 14 ft.
.SAT...SW wind 25 kt. Seas 14 ft.
.SUN...S wind 20 kt. Seas 13 ft.

$$

PKZ180-251300-
Kuskokwim Delta and Etolin Strait-
351 PM AKDT Tue Apr 24 2018

...GALE WARNING TONIGHT...

.TONIGHT...S wind 35 kt. Seas 12 ft.
.WED...SW wind 30 kt. Seas 12 ft.
.WED NIGHT...SW wind 20 kt. Seas 8 ft.
.THU...SW wind 25 kt. Seas 7 ft.
.THU NIGHT...SW wind 30 kt. Seas 10 ft.
.FRI THROUGH SAT...S wind 25 kt. Seas 10 ft.
.SUN...S wind 20 kt. Seas 10 ft.

$$

PKZ181-251300-
North and West of Nunivak Island-
351 PM AKDT Tue Apr 24 2018

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

.TONIGHT...S wind 25 kt. Seas 6 ft.
.WED...SW wind 25 kt. Seas 8 ft.
.WED NIGHT...SW wind 25 kt. Seas 9 ft.
.THU AND THU NIGHT...SW wind 25 kt. Seas 8 ft.
.FRI THROUGH SUN...S wind 25 kt. Seas 11 ft.

$$

PKZ185-251300-
Saint Matthew Island Waters-
351 PM AKDT Tue Apr 24 2018

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

.TONIGHT...NW wind 25 kt. Seas 10 ft.
.WED...W wind 30 kt. Seas 10 ft.
.WED NIGHT...W wind 25 kt. Seas 9 ft.
.THU...SW wind 30 kt. Seas 10 ft.
.THU NIGHT...W wind 25 kt. Seas 9 ft.
.FRI...SE wind 30 kt. Seas 16 ft.
.SAT...SW wind 30 kt. Seas 16 ft.
.SUN...S wind 20 kt. Seas 14 ft.

$$

833 
FZAK52 PAFC 251128
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
328 AM AKDT Wed Apr 25 2018

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.

PKZ199-260030-
328 AM AKDT Wed Apr 25 2018
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 974 mb over St Lawrence Island loops into the Chukotsk 
Peninsula at 996 mb for Fri morning. Its front spreads across 
Northern Alaska through Fri morning. A 978 mb Kamchatka low 
extends a front across the Aleutians into Western Bering by Fri 
morning.

$$

PKZ150-260030-
South of the AK Peninsula Sitkinak to Castle Cape-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 30 kt. Seas 18 ft.
.TONIGHT...SW wind 25 kt. Seas 15 ft.
.THU...SW wind 20 kt. Seas 12 ft.
.THU NIGHT...SW wind 25 kt. Seas 9 ft.
.FRI THROUGH SAT...SW wind 30 kt. Seas 13 to 15 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ155-260030-
South of the AK Peninsula Castle Cape to Cape Sarichef-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 30 kt. Seas 20 ft. Rain showers and snow showers.
.TONIGHT...SW wind 25 kt. Seas 16 ft.
.THU...SW wind 20 kt. Seas 12 ft.
.THU NIGHT...SW wind 30 kt. Seas 9 ft.
.FRI...SW wind 35 kt. Seas 15 ft.
.SAT...SW wind 30 kt. Seas 15 ft.
.SUN...SW wind 20 kt. Seas 13 ft.

$$

PKZ160-260030-
Bristol Bay-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...S wind 30 kt. Seas 11 ft.
.TONIGHT...S wind 15 kt. Seas 8 ft.
.THU...SW wind 15 kt. Seas 6 ft.
.THU NIGHT...S wind 25 kt. Seas 8 ft.
.FRI THROUGH SAT...S wind 20 kt. Seas 8 to 9 ft.
.SUN...SW wind 15 kt. Seas 8 ft.

$$

PKZ165-260030-
Port Heiden to Cape Sarichef-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 30 kt. Seas 14 ft.
.TONIGHT...SW wind 20 kt. Seas 9 ft.
.THU...SW wind 15 kt increasing to 25 kt in the afternoon. 
Seas 8 ft.
.THU NIGHT...SW wind 30 kt. Seas 11 ft.
.FRI...SW wind 30 kt. Seas 13 ft.
.SAT...SW wind 25 kt. Seas 13 ft.
.SUN...SW wind 20 kt. Seas 10 ft.

$$

PKZ170-260030-
Cape Sarichef to Nikolski Bering Side-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 30 kt. Seas 12 ft. Rain showers and snow showers.
.TONIGHT...W wind 20 kt. Seas 9 ft.
.THU...SW wind 15 kt increasing to 25 kt in the afternoon. 
Seas 9  ft.
.THU NIGHT...SW wind 30 kt. Seas 11 ft.
.FRI...SW wind 35 kt. Seas 14 ft.
.SAT...SW wind 30 kt. Seas 13 ft.
.SUN...SW wind 20 kt. Seas 11 ft.

$$

PKZ171-260030-
Unalaska Bay-
328 AM AKDT Wed Apr 25 2018

.TODAY...SW wind 20 kt with gusts to 30 kt. Seas 3 ft. Rain showers 
and snow showers.
.TONIGHT...W wind 15 kt. Seas 3 ft.
.THU...W wind 10 kt. Seas 2 ft.
.THU NIGHT...SW wind 15 kt. Seas 2 ft.
.FRI...SW wind 30 kt. Seas 5 ft.
.SAT...SW wind 20 kt. Seas 3 ft.
.SUN...S wind 15 kt. Seas 2 ft.

$$

PKZ172-260030-
Cape Sarichef to Nikolski Pacific Side-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 30 kt. Seas 20 ft.
.TONIGHT...W wind 20 kt. Seas 15 ft.
.THU...W wind 20 kt. Seas 10 ft.
.THU NIGHT...SW wind 25 kt. Seas 10 ft.
.FRI...SW wind 40 kt. Seas 15 ft.
.SAT...SW wind 30 kt. Seas 14 ft.
.SUN...SW wind 20 kt. Seas 13 ft.

$$

PKZ173-260030-
Nikolski to Seguam Island Bering Side-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 25 kt. Seas 13 ft. Rain showers.
.TONIGHT...W wind 20 kt. Seas 10 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 25 kt. Seas 10 ft.
.FRI...SW wind 40 kt. Seas 14 ft.
.SAT...SW wind 25 kt. Seas 13 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ174-260030-
Nikolski to Seguam Island Pacific Side-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 25 kt. Seas 18 ft.
.TONIGHT...W wind 20 kt. Seas 13 ft.
.THU...SW wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 25 kt. Seas 10 ft.
.FRI...SW wind 40 kt. Seas 16 ft.
.SAT...SW wind 25 kt. Seas 15 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ175-260030-
Seguam Island to Adak Bering Side-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 25 kt. Seas 11 ft.
.TONIGHT...W wind 20 kt. Seas 10 ft.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...SW wind 35 kt. Seas 11 ft.
.FRI...SW wind 40 kt. Seas 14 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 11 to 13 ft.

$$

PKZ176-260030-
Seguam Island to Adak Pacific Side-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 25 kt. Seas 16 ft.
.TONIGHT...W wind 20 kt. Seas 11 ft.
.THU...W wind 25 kt. Seas 9 ft.
.THU NIGHT...SW wind 35 kt. Seas 12 ft.
.FRI...SW wind 40 kt. Seas 16 ft.
.SAT...SW wind 25 kt. Seas 14 ft.
.SUN...SW wind 20 kt. Seas 13 ft.

$$

PKZ177-260030-
Adak to Kiska-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 25 kt. Seas 13 ft.
.TONIGHT...W wind 25 kt. Seas 11 ft.
.THU...W wind 25 kt. Seas 11 ft.
.THU NIGHT...S wind 40 kt. Seas 16 ft.
.FRI...SW wind 35 kt. Seas 18 ft.
.SAT...SW wind 25 kt. Seas 13 ft.
.SUN...SW wind 20 kt. Seas 17 ft.

$$

PKZ178-260030-
Kiska to Attu-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 25 kt. Seas 12 ft.
.TONIGHT...SW wind 30 kt. Seas 11 ft.
.THU...SW wind 25 kt becoming S 30 kt in the afternoon. Seas 11 ft.
.THU NIGHT...S wind 40 kt. Seas 17 ft.
.FRI THROUGH SAT...SW wind 30 kt. Seas 18 ft.
.SUN...SW wind 25 kt. Seas 17 ft.

$$

PKZ179-260030-
Pribilof Islands Near Shore Waters-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 10 kt. Seas 9 ft.
.TONIGHT...W wind 15 kt. Seas 8 ft.
.THU...SW wind 20 kt increasing to 30 kt in the afternoon. 
Seas 11 ft.
.THU NIGHT...W wind 25 kt. Seas 11 ft.
.FRI...SW wind 30 kt. Seas 14 ft.
.SAT...SW wind 25 kt. Seas 14 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ180-260030-
Kuskokwim Delta and Etolin Strait-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 13 ft.
.TONIGHT...SW wind 15 kt. Seas 8 ft.
.THU...SW wind 15 kt becoming S 25 kt in the afternoon. Seas 7 ft.
.THU NIGHT...SW wind 30 kt. Seas 10 ft.
.FRI...S wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 9 to 11 ft.

$$

PKZ181-260030-
North and West of Nunivak Island-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 15 kt increasing to 25 kt in the afternoon. 
Seas 9 ft.
.TONIGHT...SW wind 25 kt. Seas 9 ft.
.THU...S wind 25 kt. Seas 8 ft. Snow.
.THU NIGHT...SW wind 20 kt. Seas 9 ft.
.FRI...S wind 25 kt. Seas 9 ft.
.SAT THROUGH SUN...S wind 20 kt. Seas 9 to 10 ft.

$$

PKZ185-260030-
Saint Matthew Island Waters-
328 AM AKDT Wed Apr 25 2018

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 25 kt. Seas 11 ft.
.TONIGHT...W wind 25 kt. Seas 10 ft.
.THU...SW wind 25 kt. Seas 11 ft. Snow.
.THU NIGHT...W wind 25 kt. Seas 10 ft.
.FRI...E wind 25 kt. Seas 10 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 10 to 11 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
513 AM AKDT Mon Apr 23 2018

.ANALYSIS AND UPPER LEVELS...
A large, elongated upper level trough/complex low stretches from
the Kamchatka Peninsula, across the entire Bering and into the
southwestern Gulf early this morning with three main circulations
impacting the area. The first is a strong, though now becoming
vertically stacked low tracking through the western Aleutians. As
the western Aleutians low tracks east, a low in the eastern
Bering is curving back towards the west and tracking into the
central Bering in response. The third low center in the
southwestern Gulf is currently weakening towards a trough as it
lifts north. An associated frontal system stretches across the
northern Gulf coast and is pinned in place between the low/trough
to the south and the upper level ridge extending from the Yukon
Territory over the Alaska Range and into interior Alaska.

&&

.MODEL DISCUSSION...
Models remain in good agreement through midweek with all resolving
the the triple point low rotating up over the Kuskokwim Delta
early Tuesday and the strong southwesterly jet pushing from the
Alaska Peninsula into the western Gulf and then to point at
southcentral Alaska after it. This good model agreement increases
confidence in the unseasonably strong southeasterly wind event
potentially impacting the area Tuesday.

&&

.AVIATION...
PANC...VFR conditions will continue. Ceilings will likely lower
a bit during the day Monday as upper level flow shifts to south-
southwest, but low level southeasterly flow will keep them in
the VFR category. The Turnagain wind will bend into the airport
Monday afternoon and strengthen into the evening hours. In fact,
with pressure gradients rapidly tightening ahead of the next
system, the southeasterly winds may just continue to strengthen
all the way through Tuesday afternoon.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
An active week is in store for Southcentral Alaska with a number
of unusually strong systems for this time of year rumbling
through. The first one is bringing rain to the north Gulf coast
today with just scattered showers inland. The exception could be
the Copper River Basin where satellite shows a bit more lifting in
the eastern half of the Basin. Winds will increase again through
the typical gaps today and then crank up a few notches tonight
through Tuesday. A strong front will push into the western Gulf of
Alaska and up Cook Inlet tonight which is associated with a large
low in the eastern Bering Sea. A significant warm push aloft will
be ahead of this front with some colder air moving in behind it
Tuesday night. This front will bring strong southeast winds into
the Anchorage area and Matanuska Valley and strong south winds
along the Copper River. Winds will make it into the Anchorage bowl
as they bend northwestward out of Turnagain Arm. It has been a
while since winds this strong have made it into town. The strong
winds will mostly keep the area dry with the best shot of rain for
Anchorage and the Matanuska Valley late Tuesday afternoon through
mid evening as an upper level wave moves through. There is also
some questions as for snow amounts Tuesday afternoon into Tuesday
night for areas north of Talkeetna. Talkeetna will be on the
borderline for snow, but areas north of there should be able to
get mostly snow by Tuesday night with perhaps a number of inches
of accumulation.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
An upper level low situated out over the Bering Sea will continue
to support an active weather pattern over the SW portion of the
state through mid-week, reminiscent of a pattern typically seen
during the fall. A series of short-wave troughs will continue to
sweep across SW Alaska today bringing rain and snow showers to the
region with persistent cloud cover. A pair of surface lows over
the Bering will rotate around each other then merge into a single
low center by Tuesday morning. At the same time, the upper level
low will reorient itself and dig south allowing a secondary
surface low to rapidly form near Bristol Bay and track north over
the SW mainland on Tuesday. This system will be aided by a strong
120 kt southwesterly jet which will help to pump in a large plume
of moisture to the mainland and bring strong southeasterly winds
to the surface on Tuesday. Winds will be strongest through
channeled terrain including through the Kamishak Gap and out
across Lake Iliamna, where winds could gusts as high as 50 mph at
times.

As the system pushes east Tuesday night, long fetch gale force
southwesterly winds will develop across the southern Bering and
into Bristol Bay. This will lead to rising seas and rough surf
along the coast. There is the possibility of minor flooding and
beach erosion along the coast from Kuskokwim Bay south to the
Northern Bristol Bay Coast as storm surge coupled with high tides
could bring water levels up to 1-3 ft above high astronomical tide
(grass line) on Tuesday evening.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
A large upper level low will continue to dominate the weather this
week over the Bering bringing cloudy, wet, and windy weather to
the area, or just another typical day in the Bering and
Aleutians. A pair of surface lows will continue to rotate around
each other today bringing showery weather over most of the
region. A stronger surface low will develop today over the Western
Bering as the upper level trough digs further south and amplifies
as a strong jet pushes north over the eastern Bering. This will
lead to widespread gale force winds across the southern Bering and
most of the Aleutians beginning this evening through the middle
of the week. The long fetch winds will increase wave heights over
this area, with seas on the Pacific side of the Aleutians
increasing to more than 20 ft by Tuesday.

&&

.LONG TERM FORECAST (Days 3 through 7)...
The long range forecast beginning Tuesday night will be in an
active pattern as a broad Bering low spins multiple shortwaves
around its perimeter which spans across the state and surrounding
waters. Onshore flow supplies abundant moisture for showers to
develop with the embedded shortwaves as they move around the low
center which brings higher precipitation chances for the southern
mainland through mid week.

Late Thursday, the Bering low is kicked eastward as the next low
races up from the North Pacific to the western Bering. Models are
in good agreement on the timing of this storm reaching the
central Aleutians early Friday morning; however, they diverge on
the timing and track of the system thereafter. The main challenge
for models is resolving a ridge that builds into the southern
gulf ahead of the next approaching low. The ECMWF had the best run
to run consistency and also had good continuity between its
operation and ensemble solutions for the extended range forecasts.
Overall, only minor updates were made for second half of the
forecast as there is low confidence concerning the track of the
Bering low.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gales 119 120 125 130 131 132 139 150 155 170 172 173 174
175 176 177 178 185 .

&&

SYNOPSIS AND MODEL DISCUSSION...JR
SOUTHCENTRAL ALASKA...EZ
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KVP
LONG TERM...KH

SPECIAL WEATHER STATEMENT
National Weather Service ANCHORAGE AK
129 PM AKDT Mon Apr 23 2018

AKZ155-242100-
Kuskokwim Delta-
Including the cities of Bethel, Hooper Bay, and Nunivak Island
129 PM AKDT Mon Apr 23 2018

...HIGH WATER LEVELS EXPECTED ALONG THE KUSKOKWIM BAY COAST
TUESDAY AFTERNOON THROUGH EARLY WEDNESDAY MORNING...

Strong southerly winds will lead to high water levels along
Kuskokwim Bay Tuesday afternoon through early Wednesday morning as
a storm tracks up the west coast of Alaska. While flooding is not
expected, high surf with water levels at or slightly above
highest astronomical tide levels is likely around the time of high
tide Tuesday afternoon and early Wednesday morning. Anyone with
equipment along the immediate coastline should take precaution to
protect it.