Gale Warning 481, NWS Anchorage, AK

546 
FZAK52 PAFC 162359
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
359 PM AKDT Wed Sep 16 2020

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.

PKZ199-171315-
359 PM AKDT Wed Sep 16 2020

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

A 991 mb low 70 nm South of Cold Bay moves over Naknek at 986 mb 
then inland Thu afternoon. Its front moves into the Gulf of Alaska
for Thu afternoon. A 1012 mb Kamchatka low moves to 30 nm South of
Unimak Pass at 1001 mb by Fri afternoon. Its front moves over the
Aleutians to the Alaska Peninsula through Fri afternoon.

$$

PKZ150-171315-
South of the AK Peninsula Sitkinak to Castle Cape-
359 PM AKDT Wed Sep 16 2020

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

.TONIGHT...SE wind 30 kt. Seas building to 12 ft.
.THU...S wind 40 kt. Seas 12 ft building to 16 ft in the afternoon. 
Rain.
.THU NIGHT...W wind 35 kt. Seas 15 ft subsiding to 10 ft after
midnight.
.FRI AND FRI NIGHT...S wind 25 kt. Seas 9 ft.
.SAT...W wind 30 kt. Seas 7 ft.
.SUN...S wind 25 kt. Seas 8 ft.
.MON...S wind 20 kt. Seas 10 ft.

$$

PKZ155-171315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
359 PM AKDT Wed Sep 16 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...SW wind 40 kt. Seas 13 ft. Rain.
.THU...W wind 40 kt. Seas 14 ft.
.THU NIGHT...W wind 30 kt. Seas 11 ft subsiding to 8 ft after
midnight.
.FRI...SW wind 30 kt. Seas 8 ft.
.FRI NIGHT...W wind 30 kt. Seas 7 ft.
.SAT...W wind 30 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 10 ft.
.MON...W wind 20 kt. Seas 11 ft.

$$

PKZ160-171315-
Bristol Bay-
359 PM AKDT Wed Sep 16 2020

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...E wind 30 kt. Seas 6 ft. Rain.
.THU...SE wind 30 kt becoming W in the afternoon. Seas 6 ft building
to 10 ft in the afternoon. Rain.
.THU NIGHT...W wind 35 kt. Seas 11 ft subsiding to 8 ft after
midnight. Rain.
.FRI...SW wind 20 kt. Seas 8 ft subsiding to 5 ft in the afternoon. 
.FRI NIGHT...E wind 15 kt. Seas 4 ft.
.SAT...W wind 20 kt. Seas 4 ft.
.SUN...SE wind 25 kt. Seas 7 ft.
.MON...E wind 20 kt. Seas 6 ft.

$$

PKZ165-171315-
Port Heiden to Cape Sarichef-
359 PM AKDT Wed Sep 16 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...NW wind 35 kt. Seas 9 ft. Rain.
.THU...NW wind 35 kt. Seas 11 ft. Rain.
.THU NIGHT...W wind 30 kt. Seas 11 ft subsiding to 7 ft after
midnight.
.FRI...S wind 25 kt. Seas 7 ft.
.FRI NIGHT...NW wind 25 kt. Seas 6 ft.
.SAT...W wind 20 kt. Seas 6 ft.
.SUN...S wind 25 kt. Seas 8 ft.
.MON...NW wind 15 kt. Seas 9 ft.

$$

PKZ170-171315-
Cape Sarichef to Nikolski Bering Side-
359 PM AKDT Wed Sep 16 2020

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

.TONIGHT...NW wind 30 kt. Seas 8 ft.
.THU...W wind 30 kt. Seas 9 ft.
.THU NIGHT...W wind 25 kt. Seas 8 ft.
.FRI...SW wind 25 kt. Seas 6 ft.
.FRI NIGHT...W wind 25 kt. Seas 5 ft.
.SAT...SW wind 30 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 13 ft.
.MON...W wind 20 kt. Seas 13 ft.

$$

PKZ171-171315-
Unalaska Bay-
359 PM AKDT Wed Sep 16 2020

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

.TONIGHT...W wind 30 kt. Seas 5 ft. Rain.
.THU...W wind 30 kt. Seas 5 ft.
.THU NIGHT...W wind 25 kt becoming SW 15 kt after midnight. Seas
4 ft subsiding to 2 ft after midnight.
.FRI...SW wind 25 kt. Seas 4 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 4 ft.
.SUN...S wind 20 kt. Seas 3 ft.
.MON...W wind 10 kt. Seas 2 ft.

$$

PKZ172-171315-
Cape Sarichef to Nikolski Pacific Side-
359 PM AKDT Wed Sep 16 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
9 ft.
.THU...W wind 30 kt. Seas 9 ft.
.THU NIGHT...SW wind 25 kt. Seas 8 ft. Rain.
.FRI...SW wind 35 kt. Seas 7 ft.
.FRI NIGHT...W wind 30 kt. Seas 8 ft.
.SAT...SW wind 30 kt. Seas 8 ft.
.SUN...SW wind 30 kt. Seas building to 14 ft.
.MON...W wind 25 kt. Seas 16 ft.

$$

PKZ173-171315-
Nikolski to Seguam Island Bering Side-
359 PM AKDT Wed Sep 16 2020

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 7 ft.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...S wind 25 kt. Seas 6 ft. Rain.
.FRI...W wind 30 kt. Seas 6 ft.
.FRI NIGHT...W wind 20 kt. Seas 6 ft.
.SAT...SW wind 30 kt. Seas 11 ft.
.SUN...SW wind 30 kt. Seas building to 15 ft.
.MON...W wind 30 kt. Seas 15 ft.

$$

PKZ174-171315-
Nikolski to Seguam Island Pacific Side-
359 PM AKDT Wed Sep 16 2020

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

.TONIGHT...W wind 25 kt. Seas 9 ft.
.THU...W wind 20 kt. Seas 8 ft.
.THU NIGHT...SW wind 25 kt. Seas 7 ft. Rain.
.FRI...W wind 30 kt. Seas 9 ft.
.FRI NIGHT...NW wind 25 kt. Seas 9 ft.
.SAT...SW wind 30 kt. Seas 12 ft.
.SUN...SW wind 35 kt. Seas building to 21 ft.
.MON...W wind 40 kt. Seas 22 ft.

$$

PKZ175-171315-
Seguam Island to Adak Bering Side-
359 PM AKDT Wed Sep 16 2020

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 6 ft.
.THU...W wind 15 kt. Seas 5 ft.
.THU NIGHT...S wind 20 kt becoming SW 30 kt after midnight. Seas
5 ft. Rain.
.FRI...NW wind 30 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...S wind 30 kt. Seas building to 11 ft.
.SUN...SW wind 40 kt. Seas 13 ft.
.MON...W wind 40 kt. Seas 13 ft.

$$

PKZ176-171315-
Seguam Island to Adak Pacific Side-
359 PM AKDT Wed Sep 16 2020

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

.TONIGHT...NW wind 25 kt. Seas 10 ft subsiding to 7 ft before
midnight.
.THU...W wind 20 kt. Seas 6 ft.
.THU NIGHT...SW wind 30 kt. Seas 8 ft. Rain.
.FRI...W wind 30 kt. Seas 9 ft.
.FRI NIGHT...W wind 15 kt. Seas 8 ft.
.SAT...S wind 35 kt. Seas building to 15 ft.
.SUN...SW wind 45 kt. Seas building to 26 ft.
.MON...W wind 45 kt. Seas 26 ft.

$$

PKZ177-171315-
Adak to Kiska-
359 PM AKDT Wed Sep 16 2020

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 7 ft. Rain.
.THU...SW wind 20 kt. Seas 6 ft.
.THU NIGHT...W wind 30 kt. Seas 7 ft. Rain.
.FRI...NW wind 25 kt. Seas 8 ft.
.FRI NIGHT...W wind 15 kt. Seas 6 ft.
.SAT...S wind 35 kt. Seas building to 15 ft.
.SUN THROUGH MON...W wind 40 kt. Seas building to 23 ft.

$$

PKZ178-171315-
Kiska to Attu-
359 PM AKDT Wed Sep 16 2020

...SMALL CRAFT ADVISORY THURSDAY AND THURSDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 5 ft.
.THU...SW wind 15 kt increasing to 25 kt in the afternoon. Seas
6 ft.
.THU NIGHT...W wind 25 kt. Seas 7 ft.
.FRI...W wind 20 kt. Seas 7 ft.
.FRI NIGHT...S wind 25 kt. Seas 6 ft.
.SAT...S wind 35 kt. Seas building to 20 ft.
.SUN...SW wind 40 kt. Seas 20 ft.
.MON...W wind 35 kt. Seas 17 ft.

$$

PKZ179-171315-
Pribilof Islands Near Shore Waters-
359 PM AKDT Wed Sep 16 2020

.TONIGHT...NW wind 20 kt. Seas 5 ft.
.THU...W wind 20 kt. Seas 5 ft.
.THU NIGHT...W wind 20 kt. Seas 6 ft.
.FRI...W wind 15 kt. Seas 3 ft.
.FRI NIGHT...W wind 20 kt. Seas 4 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SUN...SE wind 25 kt. Seas building to 11 ft.
.MON...N wind 25 kt. Seas 11 ft.

$$

PKZ180-171315-
Kuskokwim Delta and Etolin Strait-
359 PM AKDT Wed Sep 16 2020

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

.TONIGHT...N wind 30 kt. Seas 7 ft. Rain.
.THU...NW wind 30 kt. Seas 9 ft.
.THU NIGHT...W wind 30 kt. Seas 8 ft.
.FRI...SW wind 20 kt. Seas 6 ft.
.FRI NIGHT...W wind 15 kt. Seas 4 ft.
.SAT...W wind 20 kt. Seas 4 ft.
.SUN...SE wind 30 kt. Seas 9 ft.
.MON...NE wind 25 kt. Seas 8 ft.

$$

PKZ181-171315-
North and West of Nunivak Island-
359 PM AKDT Wed Sep 16 2020

...SMALL CRAFT ADVISORY THURSDAY NIGHT...

.TONIGHT...NW wind 15 kt. Seas 3 ft.
.THU...NW wind 20 kt. Seas 5 ft.
.THU NIGHT...W wind 25 kt. Seas 6 ft.
.FRI...W wind 20 kt. Seas 4 ft.
.FRI NIGHT...W wind 15 kt. Seas 4 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SUN...E wind 30 kt. Seas building to 10 ft.
.MON...NE wind 30 kt. Seas 10 ft.

$$

PKZ185-171315-
Saint Matthew Island Waters-
359 PM AKDT Wed Sep 16 2020

.TONIGHT...W wind 15 kt. Seas 5 ft.
.THU...NW wind 20 kt. Seas 5 ft.
.THU NIGHT...NW wind 20 kt. Seas 5 ft.
.FRI AND FRI NIGHT...NW wind 15 kt. Seas 5 ft.
.SAT...NE wind 30 kt. Seas 7 ft.
.SUN...NE wind 35 kt. Seas building to 14 ft.
.MON...N wind 35 kt. Seas 14 ft.

$$

205 
FZAK52 PAFC 171133
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
333 AM AKDT Thu Sep 17 2020

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.

PKZ199-180100-
333 AM AKDT Thu Sep 17 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 986 mb low 20 nm northwest of Port Heiden this morning will 
move inland by Friday morning. An 1003 mb low will develop 200 nm 
southwest of Dutch Harbor and move into the Gulf by Saturday 
morning. 

$$

PKZ150-180100-
South of the AK Peninsula Sitkinak to Castle Cape-
333 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 15 ft. Rain showers.
.TONIGHT...W wind 30 kt. Seas 14 ft.
.FRI...SW wind 20 kt. Seas 9 ft.
.FRI NIGHT...S wind 20 kt. Seas 7 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 8 ft.
.MON...E wind 20 kt. Seas 10 ft.

$$

PKZ155-180100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
333 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 14 ft.
.TONIGHT...W wind 25 kt. Seas 11 ft.
.FRI...SW wind 20 kt. Seas 7 ft. Rain showers.
.FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN...SW wind 25 kt. Seas 10 ft.
.MON...W wind 30 kt. Seas 12 ft.

$$

PKZ160-180100-
Bristol Bay-
333 AM AKDT Thu Sep 17 2020

...GALE WARNING TONIGHT...

.TODAY...SE wind 30 kt becoming W in the afternoon. Seas 9 ft.
Rain showers.
.TONIGHT...W wind 35 kt. Seas 12 ft. Rain showers.
.FRI...SW wind 25 kt. Seas 8 ft. Rain showers.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SUN...SE wind 20 kt. Seas 5 ft.
.MON...NE wind 25 kt. Seas 6 ft.

$$

PKZ165-180100-
Port Heiden to Cape Sarichef-
333 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 12 ft. Rain.
.TONIGHT...W wind 30 kt. Seas 11 ft.
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...S wind 20 kt. Seas 10 ft.
.MON...N wind 30 kt. Seas 10 ft.

$$

PKZ170-180100-
Cape Sarichef to Nikolski Bering Side-
333 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 30 kt. Seas 9 ft.
.TONIGHT...W wind 20 kt. Seas 9 ft.
.FRI...S wind 20 kt becoming N in the afternoon. Seas 6 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 30 kt. Seas 8 ft.
.SUN...SW wind 30 kt. Seas 13 ft.
.MON...NW wind 30 kt. Seas 13 ft.

$$

PKZ171-180100-
Unalaska Bay-
333 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 30 kt. Seas 4 ft.
.TONIGHT...W wind 20 kt becoming S 10 kt after midnight. Seas 3 ft.
.FRI...S wind 10 kt becoming N in the afternoon. Seas 2 ft
building to 4 ft in the afternoon. Rain.
.FRI NIGHT...W wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 3 ft.
.MON...NW wind 25 kt. Seas 6 ft.

$$

PKZ172-180100-
Cape Sarichef to Nikolski Pacific Side-
333 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...W wind 30 kt. Seas 9 ft.
.TONIGHT...W wind 20 kt. Seas 8 ft.
.FRI...SW wind 25 kt. Seas 8 ft. Rain showers.
.FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...SW wind 30 kt. Seas 9 ft.
.SUN...SW wind 35 kt. Seas 16 ft.
.MON...W wind 35 kt. Seas 16 ft.

$$

PKZ173-180100-
Nikolski to Seguam Island Bering Side-
333 AM AKDT Thu Sep 17 2020

.TODAY...W wind 20 kt. Seas 6 ft.
.TONIGHT...SW wind 15 kt. Seas 6 ft. Rain.
.FRI...W wind 20 kt. Seas 6 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...SW wind 30 kt. Seas 11 ft.
.SUN...SW wind 35 kt. Seas 14 ft.
.MON...NW wind 30 kt. Seas 14 ft.

$$

PKZ174-180100-
Nikolski to Seguam Island Pacific Side-
333 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TODAY AND FRIDAY...

.TODAY...W wind 20 kt. Seas 8 ft.
.TONIGHT...SW wind 20 kt. Seas 6 ft. Rain showers.
.FRI...SW wind 30 kt. Seas 10 ft. Rain showers.
.FRI NIGHT...NW wind 20 kt. Seas 8 ft.
.SAT...SW wind 30 kt. Seas 13 ft.
.SUN...SW wind 35 kt. Seas 21 ft.
.MON...W wind 35 kt. Seas 21 ft.

$$

PKZ175-180100-
Seguam Island to Adak Bering Side-
333 AM AKDT Thu Sep 17 2020

.TODAY...W wind 15 kt. Seas 5 ft.
.TONIGHT...SW wind 20 kt. Seas 4 ft. Rain.
.FRI...NW wind 20 kt. Seas 5 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...SW wind 35 kt. Seas 14 ft.
.MON...W wind 30 kt. Seas 13 ft.

$$

PKZ176-180100-
Seguam Island to Adak Pacific Side-
333 AM AKDT Thu Sep 17 2020

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

.TODAY...W wind 20 kt. Seas 6 ft.
.TONIGHT...SW wind 25 kt. Seas 7 ft. Rain.
.FRI...W wind 30 kt diminishing to 20 kt in the afternoon. Seas 10 ft.
.FRI NIGHT...W wind 15 kt. Seas 7 ft.
.SAT...SW wind 35 kt. Seas 16 ft.
.SUN THROUGH MON...W wind 35 kt. Seas 26 ft.

$$

PKZ177-180100-
Adak to Kiska-
333 AM AKDT Thu Sep 17 2020

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

.TODAY...SW wind 15 kt. Seas 5 ft.
.TONIGHT...W wind 25 kt. Seas 7 ft. Rain.
.FRI...NW wind 25 kt diminishing to 15 kt in the afternoon. Seas
8 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...W wind 35 kt. Seas 21 ft.
.MON...W wind 30 kt. Seas 22 ft.

$$

PKZ178-180100-
Kiska to Attu-
333 AM AKDT Thu Sep 17 2020

.TODAY...SW wind 20 kt. Seas 5 ft.
.TONIGHT...W wind 20 kt. Seas 7 ft.
.FRI...NW wind 15 kt becoming SW in the afternoon. Seas 7 ft.
.FRI NIGHT...S wind 35 kt. Seas 8 ft.
.SAT...SW wind 35 kt. Seas 23 ft.
.SUN...W wind 30 kt. Seas 20 ft.
.MON...W wind 25 kt. Seas 17 ft.

$$

PKZ179-180100-
Pribilof Islands Near Shore Waters-
333 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt. Seas 7 ft.
.TONIGHT...W wind 20 kt. Seas 7 ft.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...S wind 25 kt. Seas 8 ft.
.SUN...SE wind 25 kt. Seas 12 ft.
.MON...NW wind 30 kt. Seas 12 ft.

$$

PKZ180-180100-
Kuskokwim Delta and Etolin Strait-
333 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 10 ft. Rain showers.
.TONIGHT...W wind 30 kt. Seas 10 ft.
.FRI...SW wind 20 kt. Seas 8 ft.
.FRI NIGHT...W wind 20 kt. Seas 6 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SUN...E wind 25 kt. Seas 9 ft.
.MON...N wind 30 kt. Seas 10 ft.

$$

PKZ181-180100-
North and West of Nunivak Island-
333 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 25 kt. Seas 5 ft.
.TONIGHT...W wind 25 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...NE wind 30 kt. Seas 10 ft.
.MON...N wind 30 kt. Seas 10 ft.

$$

PKZ185-180100-
Saint Matthew Island Waters-
333 AM AKDT Thu Sep 17 2020

.TODAY...NW wind 20 kt. Seas 5 ft.
.TONIGHT...NW wind 20 kt. Seas 5 ft.
.FRI...NW wind 20 kt. Seas 5 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...SE wind 30 kt. Seas 8 ft.
.SUN...NE wind 30 kt. Seas 11 ft.
.MON...NW wind 30 kt. Seas 11 ft.

$$

523 
FZAK52 PAFC 171532
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage AK
732 AM AKDT Thu Sep 17 2020

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-
732 AM AKDT Thu Sep 17 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 986 mb low 20 nm northwest of Port Heiden this morning will 
move inland by Friday morning. An 1003 mb low will develop 200 nm 
southwest of Dutch Harbor and move into the Gulf by Saturday 
morning. 

$$

PKZ150-180315-
South of the AK Peninsula Sitkinak to Castle Cape-
732 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...SW wind 40 kt. Seas 15 ft. Rain showers.
.TONIGHT...W wind 30 kt. Seas 14 ft.
.FRI...SW wind 20 kt. Seas 9 ft.
.FRI NIGHT...S wind 20 kt. Seas 7 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 8 ft.
.MON...E wind 20 kt. Seas 10 ft.


$$

PKZ155-180315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
732 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...W wind 40 kt. Seas 14 ft.
.TONIGHT...W wind 30 kt. Seas 11 ft.
.FRI...SW wind 20 kt. Seas 7 ft. Rain showers.
.FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN...SW wind 25 kt. Seas 10 ft.
.MON...W wind 30 kt. Seas 12 ft.

$$

PKZ160-180315-
Bristol Bay-
732 AM AKDT Thu Sep 17 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 25 kt becoming W 40 kt in the afternoon. Seas 6 ft
building to 11 ft in the afternoon. Rain showers.
.TONIGHT...W wind 40 kt diminishing to 30 kt after midnight. Seas
13 ft. Rain showers.
.FRI...SW wind 25 kt. Seas 8 ft. Rain showers.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SUN...SE wind 20 kt. Seas 5 ft.
.MON...NE wind 25 kt. Seas 6 ft.


$$

PKZ165-180315-
Port Heiden to Cape Sarichef-
732 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...W wind 40 kt. Seas 13 ft. Rain.
.TONIGHT...W wind 30 kt. Seas 12 ft.
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...S wind 20 kt. Seas 10 ft.
.MON...N wind 30 kt. Seas 10 ft.

$$

PKZ170-180315-
Cape Sarichef to Nikolski Bering Side-
732 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 30 kt. Seas 9 ft. 
.TONIGHT...W wind 20 kt. Seas 9 ft. 
.FRI...S wind 20 kt becoming N in the afternoon. Seas 6 ft. 
.FRI NIGHT...W wind 20 kt. Seas 5 ft. 
.SAT...SW wind 30 kt. Seas 8 ft. 
.SUN...SW wind 30 kt. Seas 13 ft. 
.MON...NW wind 30 kt. Seas 13 ft.

$$

PKZ171-180315-
Unalaska Bay-
732 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 30 kt. Seas 4 ft. 
.TONIGHT...W wind 20 kt becoming S 10 kt after midnight. Seas
3 ft. 
.FRI...S wind 10 kt becoming N in the afternoon. Seas 2 ft
building to 4 ft in the afternoon. Rain. 
.FRI NIGHT...W wind 20 kt. Seas 4 ft. 
.SAT THROUGH SUN...SW wind 20 kt. Seas 3 ft. 
.MON...NW wind 25 kt. Seas 6 ft.

$$

PKZ172-180315-
Cape Sarichef to Nikolski Pacific Side-
732 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...W wind 30 kt. Seas 9 ft. 
.TONIGHT...W wind 20 kt. Seas 8 ft. 
.FRI...SW wind 25 kt. Seas 8 ft. Rain showers. 
.FRI NIGHT...NW wind 25 kt. Seas 7 ft. 
.SAT...SW wind 30 kt. Seas 9 ft. 
.SUN...SW wind 35 kt. Seas 16 ft. 
.MON...W wind 35 kt. Seas 16 ft.

$$

PKZ173-180315-
Nikolski to Seguam Island Bering Side-
732 AM AKDT Thu Sep 17 2020

.TODAY...W wind 20 kt. Seas 6 ft. 
.TONIGHT...SW wind 15 kt. Seas 6 ft. Rain. 
.FRI...W wind 20 kt. Seas 6 ft. 
.FRI NIGHT...W wind 15 kt. Seas 5 ft. 
.SAT...SW wind 30 kt. Seas 11 ft. 
.SUN...SW wind 35 kt. Seas 14 ft. 
.MON...NW wind 30 kt. Seas 14 ft.

$$

PKZ174-180315-
Nikolski to Seguam Island Pacific Side-
732 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TODAY AND FRIDAY...

.TODAY...W wind 20 kt. Seas 8 ft. 
.TONIGHT...SW wind 20 kt. Seas 6 ft. Rain showers. 
.FRI...SW wind 30 kt. Seas 10 ft. Rain showers. 
.FRI NIGHT...NW wind 20 kt. Seas 8 ft. 
.SAT...SW wind 30 kt. Seas 13 ft. 
.SUN...SW wind 35 kt. Seas 21 ft. 
.MON...W wind 35 kt. Seas 21 ft.

$$

PKZ175-180315-
Seguam Island to Adak Bering Side-
732 AM AKDT Thu Sep 17 2020

.TODAY...W wind 15 kt. Seas 5 ft. 
.TONIGHT...SW wind 20 kt. Seas 4 ft. Rain. 
.FRI...NW wind 20 kt. Seas 5 ft. 
.FRI NIGHT...W wind 15 kt. Seas 5 ft. 
.SAT THROUGH SUN...SW wind 35 kt. Seas 14 ft. 
.MON...W wind 30 kt. Seas 13 ft.

$$

PKZ176-180315-
Seguam Island to Adak Pacific Side-
732 AM AKDT Thu Sep 17 2020

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

.TODAY...W wind 20 kt. Seas 6 ft. 
.TONIGHT...SW wind 25 kt. Seas 7 ft. Rain. 
.FRI...W wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft. 
.FRI NIGHT...W wind 15 kt. Seas 7 ft. 
.SAT...SW wind 35 kt. Seas 16 ft. 
.SUN THROUGH MON...W wind 35 kt. Seas 26 ft.

$$

PKZ177-180315-
Adak to Kiska-
732 AM AKDT Thu Sep 17 2020

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

.TODAY...SW wind 15 kt. Seas 5 ft. 
.TONIGHT...W wind 25 kt. Seas 7 ft. Rain. 
.FRI...NW wind 25 kt diminishing to 15 kt in the afternoon. Seas
8 ft. 
.FRI NIGHT...SW wind 20 kt. Seas 5 ft. 
.SAT THROUGH SUN...W wind 35 kt. Seas 21 ft. 
.MON...W wind 30 kt. Seas 22 ft.

$$

PKZ178-180315-
Kiska to Attu-
732 AM AKDT Thu Sep 17 2020

.TODAY...SW wind 20 kt. Seas 5 ft. 
.TONIGHT...W wind 20 kt. Seas 7 ft. 
.FRI...NW wind 15 kt becoming SW in the afternoon. Seas 7 ft. 
.FRI NIGHT...S wind 35 kt. Seas 8 ft. 
.SAT...SW wind 35 kt. Seas 23 ft. 
.SUN...W wind 30 kt. Seas 20 ft. 
.MON...W wind 25 kt. Seas 17 ft.

$$

PKZ179-180315-
Pribilof Islands Near Shore Waters-
732 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt. Seas 7 ft. 
.TONIGHT...W wind 20 kt. Seas 7 ft. 
.FRI...W wind 15 kt. Seas 5 ft. 
.FRI NIGHT...W wind 20 kt. Seas 5 ft. 
.SAT...S wind 25 kt. Seas 8 ft. 
.SUN...SE wind 25 kt. Seas 12 ft. 
.MON...NW wind 30 kt. Seas 12 ft.

$$

PKZ180-180315-
Kuskokwim Delta and Etolin Strait-
732 AM AKDT Thu Sep 17 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 10 ft. Rain showers. 
.TONIGHT...W wind 30 kt. Seas 10 ft. 
.FRI...SW wind 20 kt. Seas 8 ft. 
.FRI NIGHT...W wind 20 kt. Seas 6 ft. 
.SAT...W wind 15 kt. Seas 4 ft. 
.SUN...E wind 25 kt. Seas 9 ft. 
.MON...N wind 30 kt. Seas 10 ft.

$$

PKZ181-180315-
North and West of Nunivak Island-
732 AM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 25 kt. Seas 5 ft. 
.TONIGHT...W wind 25 kt. Seas 5 ft. 
.FRI...W wind 20 kt. Seas 5 ft. 
.FRI NIGHT...W wind 20 kt. Seas 5 ft. 
.SAT...W wind 20 kt. Seas 5 ft. 
.SUN...NE wind 30 kt. Seas 10 ft. 
.MON...N wind 30 kt. Seas 10 ft.

$$

PKZ185-180315-
Saint Matthew Island Waters-
732 AM AKDT Thu Sep 17 2020

.TODAY...NW wind 20 kt. Seas 5 ft. 
.TONIGHT...NW wind 20 kt. Seas 5 ft. 
.FRI...NW wind 20 kt. Seas 5 ft. 
.FRI NIGHT...NW wind 20 kt. Seas 5 ft. 
.SAT...SE wind 30 kt. Seas 8 ft. 
.SUN...NE wind 30 kt. Seas 11 ft. 
.MON...NW wind 30 kt. Seas 11 ft.

$$

198 
FZAK52 PAFC 172338
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
338 PM AKDT Thu Sep 17 2020

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.

PKZ199-181215-
338 PM AKDT Thu Sep 17 2020

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

A 1008 mb low 80 nm North of Attu moves into the Gulf of Alaska 
by Sat afternoon. Its front moves over the Aleutians and Alaska 
Peninsula through Sat afternoon. A 989 mb South Kamchatka low Fri 
afternoon moves to 120 nm West of Attu by Sat afternoon. Its 
front moves into the Central Aleutians for Sat afternoon. 

$$

PKZ150-181215-
South of the AK Peninsula Sitkinak to Castle Cape-
338 PM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...W wind 30 kt. Seas 14 ft subsiding to 9 ft after midnight. 
.FRI...SW wind 20 kt. Seas 9 ft.
.FRI NIGHT...S wind 20 kt. Seas 7 ft. Widespread rain showers.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 8 ft.
.MON...E wind 20 kt. Seas 10 ft.
.TUE...N wind 20 kt. Seas 12 ft.

$$

PKZ155-181215-
South of the AK Peninsula Castle Cape to Cape Sarichef-
338 PM AKDT Thu Sep 17 2020

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

.TONIGHT...W wind 30 kt. Seas 11 ft.
.FRI...SW wind 20 kt. Seas 11 ft subsiding to 7 ft after midnight. 
Widespread rain showers.
.FRI NIGHT...SW wind 25 kt in the evening becoming NW. Seas 7 ft. 
Widespread rain showers.
.SAT AND SAT NIGHT...W wind 20 kt. Seas 8 ft.
.SUN...S wind 25 kt. Seas 10 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 12 ft.

$$

PKZ160-181215-
Bristol Bay-
338 PM AKDT Thu Sep 17 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 40 kt becoming SW 30 kt after midnight. Seas
13 ft. Widespread rain showers.
.FRI...SW wind 30 kt. Seas 8 ft. Widespread rain showers.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT AND SAT NIGHT...W wind 20 kt. Seas 4 ft.
.SUN...SE wind 20 kt. Seas 5 ft.
.MON THROUGH TUE...N wind 25 kt. Seas 6 ft.

$$

PKZ165-181215-
Port Heiden to Cape Sarichef-
338 PM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...W wind 30 kt. Seas 12 ft subsiding to 9 ft after midnight. 
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SAT NIGHT...SW wind 20 kt. Seas 5 ft.
.SUN...SE wind 30 kt. Seas 10 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 10 ft.

$$

PKZ170-181215-
Cape Sarichef to Nikolski Bering Side-
338 PM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Seas 9 ft subsiding to 7 ft after midnight.
.FRI...S wind 20 kt becoming NW in the afternoon. Seas 6 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SAT NIGHT...S wind 30 kt. Seas building to 8 ft.
.SUN...SW wind 30 kt. Seas building to 13 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 12 ft.

$$

PKZ171-181215-
Unalaska Bay-
338 PM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt becoming SW 15 kt after midnight. Seas 4
ft subsiding to 2 ft after midnight.
.FRI...SE wind 10 kt becoming N in the afternoon. Seas 2 ft building
to 4 ft in the afternoon. Rain.
.FRI NIGHT...NW wind 20 kt in the evening becoming W. Seas 4 ft.
.SAT...W wind 20 kt. Seas 3 ft.
.SAT NIGHT...S wind 20 kt. Seas 2 ft.
.SUN...S wind 20 kt. Seas 3 ft.
.MON THROUGH TUE...NW wind 25 kt. Seas 7 ft.

$$

PKZ172-181215-
Cape Sarichef to Nikolski Pacific Side-
338 PM AKDT Thu Sep 17 2020

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

.TONIGHT...W wind 25 kt. Seas 8 ft.
.FRI...W wind 25 kt. Seas 8 ft. Widespread rain showers.
.FRI NIGHT...NW wind 25 kt. Seas 7 ft.
.SAT...W wind 20 kt. Seas 7 ft.
.SAT NIGHT...S wind 30 kt. Seas 9 ft.
.SUN...SW wind 30 kt. Seas building to 16 ft.
.MON...W wind 35 kt. Seas 16 ft.
.TUE...NW wind 35 kt. Seas 12 ft.

$$

PKZ173-181215-
Nikolski to Seguam Island Bering Side-
338 PM AKDT Thu Sep 17 2020

.TONIGHT...SW wind 20 kt. Seas 6 ft. Rain.
.FRI...S wind 15 kt in the morning becoming NW 20 kt. Seas 6 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 5 ft.
.SAT NIGHT...S wind 30 kt. Seas building to 11 ft.
.SUN...SW wind 35 kt. Seas 14 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 13 ft.

$$

PKZ174-181215-
Nikolski to Seguam Island Pacific Side-
338 PM AKDT Thu Sep 17 2020

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

.TONIGHT...SW wind 20 kt. Seas 6 ft. Widespread rain showers.
.FRI...W wind 30 kt. Seas 10 ft. Widespread rain showers.
.FRI NIGHT...NW wind 20 kt. Seas 8 ft.
.SAT...SW wind 20 kt. Seas 6 ft.
.SAT NIGHT...SW wind 35 kt. Seas building to 13 ft.
.SUN...SW wind 40 kt. Seas 21 ft.
.MON...W wind 35 kt. Seas 21 ft.
.TUE...NW wind 35 kt. Seas 13 ft.

$$

PKZ175-181215-
Seguam Island to Adak Bering Side-
338 PM AKDT Thu Sep 17 2020

.TONIGHT...S wind 15 kt becoming W after midnight. Seas 4 ft. Rain.
.FRI...NW wind 20 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...S wind 30 kt. Seas 7 ft.
.SAT NIGHT...S wind 40 kt. Seas building to 14 ft.
.SUN...W wind 45 kt. Seas 14 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 12 ft.

$$

PKZ176-181215-
Seguam Island to Adak Pacific Side-
338 PM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...SW wind 20 kt increasing to 30 kt after midnight. Seas
7 ft. Rain.
.FRI...W wind 30 kt becoming NW 20 kt in the afternoon. Seas 10
ft.
.FRI NIGHT...W wind 20 kt. Seas 7 ft.
.SAT...SW wind 30 kt. Seas 8 ft.
.SAT NIGHT...SW wind 40 kt. Seas building to 16 ft.
.SUN...W wind 45 kt. Seas building to 26 ft.
.MON...W wind 35 kt. Seas 26 ft.
.TUE...NW wind 30 kt. Seas 10 ft.

$$

PKZ177-181215-
Adak to Kiska-
338 PM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...SW wind 25 kt. Seas 7 ft. Rain.
.FRI...NW wind 25 kt becoming W 15 kt in the afternoon. Seas 8 ft.
.FRI NIGHT...W wind 20 kt becoming S after midnight. Seas 5 ft.
.SAT...S wind 40 kt. Seas building to 13 ft in the afternoon.
.SAT NIGHT...SW wind 45 kt. Seas building to 20 ft.
.SUN...W wind 45 kt. Seas 22 ft.
.MON...W wind 30 kt. Seas 22 ft.
.TUE...NW wind 20 kt. Seas 10 ft.

$$

PKZ178-181215-
Kiska to Attu-
338 PM AKDT Thu Sep 17 2020

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

.TONIGHT...W wind 25 kt. Seas 7 ft.
.FRI...W wind 15 kt. Seas 7 ft.
.FRI NIGHT...S wind 20 kt increasing to 30 kt after midnight. Seas
8 ft. Patchy fog. Rain.
.SAT...S wind 40 kt. Seas piddling to 18 ft.
.SAT NIGHT...W wind 40 kt. Seas building to 23 ft.
.SUN...W wind 45 kt. Seas 20 ft.
.MON...W wind 25 kt. Seas 17 ft.
.TUE...N wind 15 kt. Seas 9 ft.

$$

PKZ179-181215-
Pribilof Islands Near Shore Waters-
338 PM AKDT Thu Sep 17 2020

.TONIGHT...W wind 20 kt. Seas 7 ft.
.FRI...SW wind 15 kt. Seas 5 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SAT NIGHT...SE wind 30 kt. Seas 8 ft.
.SUN...E wind 30 kt. Seas 12 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 11 ft.

$$

PKZ180-181215-
Kuskokwim Delta and Etolin Strait-
338 PM AKDT Thu Sep 17 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt diminishing to 25 kt after midnight. Seas
10 ft.
.FRI...W wind 25 kt. Seas 8 ft.
.FRI NIGHT...W wind 20 kt. Seas 6 ft.
.SAT...W wind 20 kt. Seas 4 ft.
.SAT NIGHT...SW wind 15 kt. Seas 4 ft.
.SUN...E wind 30 kt. Seas building to 9 ft.
.MON...N wind 30 kt. Seas 10 ft.
.TUE...N wind 25 kt. Seas 8 ft.

$$

PKZ181-181215-
North and West of Nunivak Island-
338 PM AKDT Thu Sep 17 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 25 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 3 ft.
.SUN...E wind 30 kt. Seas building to 10 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 9 ft.

$$

PKZ185-181215-
Saint Matthew Island Waters-
338 PM AKDT Thu Sep 17 2020

.TONIGHT...NW wind 20 kt. Seas 5 ft.
.FRI...NW wind 20 kt. Seas 5 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...E wind 30 kt. Seas 8 ft.
.SUN...NE wind 35 kt. Seas 11 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 10 ft.

$$

359 
FZAK52 PAFC 181152
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
352 AM AKDT Fri Sep 18 2020

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.

PKZ199-190030-
352 AM AKDT Fri Sep 18 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 1002 mb low 180 nm southwest of Dutch Harbor this morning will 
move eastward into the Gulf of Alaska Saturday morning. A second 
977 mb low 330 nm west of Shemya Saturday morning will move 290 nm
northwest of Dutch Harbor at 982 mb Sunday morning. 

$$

PKZ150-190030-
South of the AK Peninsula Sitkinak to Castle Cape-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY TODAY AND SATURDAY...

.TODAY...SW wind 20 kt. Seas 8 ft.
.TONIGHT...S wind 20 kt. Seas 7 ft. Widespread rain showers.
.SAT...N wind 25 kt. Seas 8 ft.
.SAT NIGHT...NW wind 25 kt. Seas 8 ft.
.SUN...S wind 30 kt. Seas 11 ft.
.MON...E wind 30 kt. Seas 13 ft.
.TUE...N wind 30 kt. Seas 13 ft.

$$

PKZ155-190030-
South of the AK Peninsula Castle Cape to Cape Sarichef-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...SW wind 20 kt becoming S in the afternoon. Seas 8 ft. 
Widespread rain showers.
.TONIGHT...NW wind 25 kt. Seas 8 ft. Rain showers.
.SAT...W wind 25 kt. Seas 8 ft.
.SAT NIGHT...W wind 20 kt. Seas 7 ft.
.SUN...S wind 30 kt. Seas 12 ft.
.MON...N wind 25 kt. Seas 13 ft.
.TUE...NW wind 30 kt. Seas 12 ft.

$$

PKZ160-190030-
Bristol Bay-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 25 kt diminishing to 15 kt in the afternoon. Seas 8
ft. Widespread rain showers.
.TONIGHT...SW wind 15 kt becoming W after midnight. Seas 5 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...W wind 20 kt. Seas 4 ft.
.SUN...SE wind 35 kt. Seas 8 ft.
.MON...NE wind 35 kt. Seas 8 ft.
.TUE...N wind 25 kt. Seas 6 ft.

$$

PKZ165-190030-
Port Heiden to Cape Sarichef-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 20 kt. Seas 8 ft.
.TONIGHT...NW wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SAT NIGHT...SW wind 20 kt. Seas 4 ft.
.SUN...SE wind 35 kt. Seas 7 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 10 ft.

$$

PKZ170-190030-
Cape Sarichef to Nikolski Bering Side-
352 AM AKDT Fri Sep 18 2020

.TODAY...SE wind 15 kt becoming N in the afternoon. Seas 6 ft.
.TONIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SAT NIGHT...S wind 35 kt. Seas 7 ft.
.SUN...S wind 35 kt. Seas 10 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 12 ft.

$$

PKZ171-190030-
Unalaska Bay-
352 AM AKDT Fri Sep 18 2020

.TODAY...SE wind 10 kt becoming N 20 kt in the afternoon. Seas 2
ft building to 4 ft in the afternoon. Rain.
.TONIGHT...NW wind 20 kt. Seas 5 ft subsiding to 2 ft after
midnight.
.SAT...W wind 15 kt. Seas 3 ft.
.SAT NIGHT...S wind 25 kt. Seas 4 ft.
.SUN...S wind 30 kt. Seas 5 ft.
.MON THROUGH TUE...NW wind 20 kt. Seas 7 ft.

$$

PKZ172-190030-
Cape Sarichef to Nikolski Pacific Side-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...S wind 20 kt becoming NW in the afternoon. Seas 6 ft.
Rain showers.
.TONIGHT...NW wind 25 kt. Seas 8 ft.
.SAT...W wind 20 kt. Seas 7 ft.
.SAT NIGHT...S wind 30 kt. Seas 8 ft.
.SUN...SW wind 35 kt. Seas 16 ft.
.MON...NW wind 30 kt. Seas 15 ft.
.TUE...NW wind 30 kt. Seas 11 ft.

$$

PKZ173-190030-
Nikolski to Seguam Island Bering Side-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...NW wind 15 kt. Seas 5 ft. Rain.
.TONIGHT...W wind 20 kt. Seas 6 ft.
.SAT...SW wind 15 kt. Seas 5 ft. Rain.
.SAT NIGHT...S wind 40 kt. Seas 11 ft.
.SUN...SW wind 40 kt. Seas 13 ft.
.MON...NW wind 30 kt. Seas 15 ft.
.TUE...NW wind 30 kt. Seas 11 ft.

$$

PKZ174-190030-
Nikolski to Seguam Island Pacific Side-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SW wind 30 kt. Seas 9 ft. Rain.
.TONIGHT...W wind 20 kt. Seas 9 ft.
.SAT...SW wind 20 kt. Seas 6 ft. Rain.
.SAT NIGHT...S wind 40 kt. Seas 14 ft.
.SUN...W wind 40 kt. Seas 22 ft.
.MON...NW wind 40 kt. Seas 20 ft.
.TUE...NW wind 30 kt. Seas 13 ft.

$$

PKZ175-190030-
Seguam Island to Adak Bering Side-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...NW wind 20 kt. Seas 6 ft.
.TONIGHT...W wind 15 kt. Seas 5 ft.
.SAT...S wind 20 kt increasing to 30 kt in the afternoon. Seas 6
ft. Rain.
.SAT NIGHT...S wind 40 kt. Seas 12 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 16 ft.
.TUE...NW wind 25 kt. Seas 10 ft.

$$

PKZ176-190030-
Seguam Island to Adak Pacific Side-
352 AM AKDT Fri Sep 18 2020

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...W wind 30 kt diminishing to 20 kt in the afternoon. Seas 9 ft.
.TONIGHT...W wind 15 kt. Seas 8 ft.
.SAT...SW wind 20 kt becoming S 30 kt in the afternoon. Seas 7 ft.
Rain.
.SAT NIGHT...SW wind 45 kt. Seas 19 ft.
.SUN...W wind 50 kt. Seas 24 ft.
.MON...NW wind 45 kt. Seas 19 ft.
.TUE...NW wind 30 kt. Seas 9 ft.

$$

PKZ177-190030-
Adak to Kiska-
352 AM AKDT Fri Sep 18 2020

...GALE WARNING SATURDAY...

.TODAY...NW wind 25 kt becoming W 15 kt in the afternoon. Seas 7 ft.
.TONIGHT...S wind 20 kt. Seas 6 ft.
.SAT...S wind 30 kt increasing to 40 kt in the afternoon. Seas 7
ft building to 13 ft in the afternoon. Rain.
.SAT NIGHT...SW wind 45 kt. Seas 24 ft.
.SUN...W wind 50 kt. Seas 24 ft.
.MON...NW wind 40 kt. Seas 13 ft.
.TUE...NW wind 20 kt. Seas 10 ft.

$$

PKZ178-190030-
Kiska to Attu-
352 AM AKDT Fri Sep 18 2020

...GALE WARNING SATURDAY...

.TODAY...W wind 15 kt. Seas 6 ft.
.TONIGHT...S wind 15 kt increasing to 30 kt after midnight. Seas
6 ft. Patchy fog. Rain.
.SAT...S wind 40 kt. Seas 12 ft building to 17 ft in the
afternoon. Rain.
.SAT NIGHT...W wind 50 kt. Seas 23 ft.
.SUN...NW wind 45 kt. Seas 20 ft.
.MON...NW wind 30 kt. Seas 11 ft.
.TUE...N wind 15 kt. Seas 7 ft.

$$

PKZ179-190030-
Pribilof Islands Near Shore Waters-
352 AM AKDT Fri Sep 18 2020

.TODAY...W wind 15 kt. Seas 5 ft.
.TONIGHT...W wind 15 kt. Seas 4 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SAT NIGHT...SE wind 30 kt. Seas 7 ft.
.SUN...E wind 40 kt. Seas 12 ft.
.MON...N wind 35 kt. Seas 12 ft.
.TUE...NW wind 25 kt. Seas 10 ft.

$$

PKZ180-190030-
Kuskokwim Delta and Etolin Strait-
352 AM AKDT Fri Sep 18 2020

.TODAY...SW wind 20 kt. Seas 7 ft.
.TONIGHT...W wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...SW wind 15 kt. Seas 4 ft.
.SUN...E wind 35 kt. Seas 10 ft.
.MON...NE wind 35 kt. Seas 10 ft.
.TUE...N wind 25 kt. Seas 7 ft.

$$

PKZ181-190030-
North and West of Nunivak Island-
352 AM AKDT Fri Sep 18 2020

.TODAY...W wind 20 kt. Seas 5 ft.
.TONIGHT...W wind 20 kt. Seas 5 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...S wind 15 kt. Seas 3 ft.
.SUN...E wind 35 kt. Seas 7 ft.
.MON...N wind 30 kt. Seas 7 ft.
.TUE...N wind 25 kt. Seas 8 ft.

$$

PKZ185-190030-
Saint Matthew Island Waters-
352 AM AKDT Fri Sep 18 2020

.TODAY...NW wind 15 kt. Seas 5 ft.
.TONIGHT...NW wind 15 kt. Seas 5 ft.
.SAT...W wind 15 kt becoming S in the afternoon. Seas 4 ft.
.SAT NIGHT...E wind 35 kt. Seas 7 ft.
.SUN...NE wind 40 kt. Seas 11 ft.
.MON...N wind 30 kt. Seas 11 ft.
.TUE...NW wind 25 kt. Seas 7 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
552 AM AKDT Wed Sep 16 2020

.ANALYSIS AND UPPER LEVELS...
A clear transition to southwest flow has become established behind
a broad upper wave drifting north into the central interior. The
front that has been steadily advancing eastwards from the
Aleutians to more recently the Mat-Su valley and Kenai Peninsula
has all but sheared out now, but lingering moisture in the low
levels is allowing showers to persist for the greater Anchorage
area and along the east shores of the Cook Inlet. The Turnagain
wind had surprisingly mostly held off for the PANC terminal over
the past several hours with only sporadic gusts to 20 kts reported
at any point recently. Temperatures are unsurprisingly holding up
mostly in the 40s area-wide with ample clouds in place.

Two lows rotating about a common center are now located out west
over the Bering with one located over St Lawrence Island and the
other nearing the Central Aleutians. A wide variety of cloud
levels are evident in the nighttime microphysics satellite
product both near the two lows and over much of the remainder of
the forecast area. Low stratus is sprawled out over most of
Southcentral and a plume of cirrostratus is spreading into the
Gulf and AKPEN with the upper jet. Some areas in the Southwest are
beginning to report fog which is likely being aided by the
moderate rainfall in the past 24 hours with the frontal passage.

&&

.MODEL DISCUSSION...
Models have come into better alignment with the track of a low
expected to move from the North Pacific to eventually well inland
over the interior by Friday. Most solutions now depict the surface
low approaching Sand Point from the south before crossing or
redeveloping past the AKPEN on the Bering side as it moves north
between Wednesday and Thursday before moving inland Friday. This
should result in a lower rainfall threat for most of Southcentral
than earlier model scenarios that showed the low possibly tracking
as far east as Kodiak Island. Unfortunately, this low track will
have a more favorable setup for strong gap and lee hillside winds.
The exact timing, behavior an strength of these winds stands out
as the primary forecast challenge. Additionally, a surface trough
or low in the southern Interior may linger after the primary
forcing from the wave aloft passes, and this may result in
difficulty determining the end time for stubborn areas of rain
that could last well into Friday and beyond.

&&

.AVIATION...
PANC...Periods of showers will persist through Wednesday morning,
but visibility and ceilings should remain VFR, though a short
period of MVFR ceilings remains possible. Areas of rain showers
will return Wednesday night with mainly VFR ceilings and
visibilities persisting, but brief MVFR conditions are again
possible around this time. LLWS around 20 kts will begin
Wednesday night and last through Thursday morning. Strong and
gusty Turnagain winds are expected to potentially return at or
shortly after the end of the valid forecast period, or by Thursday
afternoon and evening.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3: Today
through Friday Night)...

A dissipating front over Southcentral this morning is producing a
few rain showers over the Mat-Su Valleys, but most of the area is
under cloudy conditions. For most of the day, most of the area
will remain dry with mostly cloudy skies and highs in the 50s.
Late this afternoon, an approaching North Pacific low with a
subtropical moisture tap will cause rain to break out all across
the western Gulf. The track of the low has shifted since yesterday
to the west. The low will track near Sand Point late this
afternoon, move onshore in Bristol Bay near Dillingham around
midday Thursday, then will transfer its energy to a new low near
Norton Sound Thursday evening. Due to the track having moved west,
there have been several changes to the forecast.

First is the heavy rain threat. Most of the heavy rain is expected
along the Gulf Coast, and in the western Susitna Valley. Both
areas will have upslope flow in the southeasterly winds, which
will enhance rainfall rates. Along the Gulf Coast, the heavy rain
will be associated with the leading front, which will be drawing
moisture from near Hawaii. The front will move northeast along the
Gulf Coast through Thursday evening. The heaviest rain begins late
tonight along the Gulf Coast, and will persist in Prince William
Sound through late Thursday night. Rainfall amounts of 2 to 3
inches in 12 hours are expected from Seward north and east along
Prince William Sound. See the Special Weather Statement for more
details. The heavier rain will persist for longer in the western
Susitna Valley, which will have the benefit of both the rain
associated with the leading front, and also the continued upslope
flow over the western Susitna Valley into Friday morning.

The other primary threat with this storm will be strong winds,
particularly along Turnagain Arm and higher elevations. A Special
Weather Statement has also been issued for the Anchorage area as
well, with focus on the strong winds. There are a couple factors
that suggest that prolonged warning level winds are not likely
with this storm. First, the low will be weakening through the
event, and on Thursday transferring its energy to a developing
low to the north. This should help keep the wind speeds down a
bit. Secondly, the low isn't expected to be particularly strong,
staying above 980 mb, so that will reduce the pressure gradient
force that would support stronger winds if it were stronger. With
that said, the forecast winds have been increased from previous
forecasts. This is primarily due to the westward track of the low
into Bristol Bay. This will allow the leading front, which will be
the primary forcing for the strong winds, to persist longer
aligned with the coast and helping direct the strong winds through
Turnagain Arm. Thus, frequent gusts of 65 to 70 mph are expected,
but gusts must stronger than that should be isolated, confined to
the windiest areas.

Once the primary low becomes the one near Norton Sound late
Thursday afternoon, the Turnagain Arm wind should be pushed
northward into Anchorage. Fortunately by this point the wind
strength should be greatly diminished from the peak winds Thursday
morning, but once again, gusty conditions are likely across the
Anchorage Bowl and the Matanuska Valley Thursday night, which
will persist into Friday morning. Gusty winds are also likely from
Thursday into Friday through the Copper River Basin. While mostly
cloudy conditions will persist over much of the area into Friday
night, overall rain and shower activity will diminish Friday
night. Finally another North Pacific low will enter the
southwestern Gulf early Saturday morning. Most of the models keep
the low well south of Kodiak and track it into the northeastern
Gulf, but it will have the potential to cause rain and low
ceilings around Kodiak City late Friday night into Saturday
morning.

&&

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

As one system slowly departs, another is quickly following on its
heels. A slow-moving low over the Chukchi Sea continues to
feature a pair of surface troughs, the first of which extends
southeast to near Iliamna. A rapidly approaching North Pacific
low is already spreading mid and high level cloud cover across the
region, and these cloud bases will continue to lower as moisture
advection and lift rapidly increases with the approaching system.
Showers will mark the more substantial leading edge of this low,
before rapidly changing over to a steady rain as it spreads from
southwest to northeast.

The models have basically locked in on a track of the low which
tacks it from King Cove to New Stuyahok, before lifting it in a
more northerly direction. Locations along and east of this low
will likely experience periods of moderate to occasionally heavy
rainfall as the center of the low approaches/passes by.

Then, as the associated surface front pushes eastward, dry
slotting will allow for the rainfall to end for a short period of
time, before wrap around showers cyclonically rotate around the
low as they overspread most of Southwest Alaska once again,
mainly on Thursday. Then on Friday, as the low pulls away, showers
will continue to affect the region, although they'll slowly
decrease in coverage with time from southwest to northeast.

&&

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

The main item of interest will be an approaching North Pacific
low that looks to travel from near King Cove north to
northeastern Bristol Bay (just east of Dillingham) for Wednesday
into Thursday morning. The models have generally locked in on this
track with just minor differences. As such, sustained winds were
increased for the southern coastal waters to gales east of
Shishaldin Volcano, with a few marginal storm force gusts
possible. This system will also have a tropical feed originating
from near Hawaii, so mariners and coastal residents can expect
moderate to at times heavy rainfall along and east of the track of
the storm, which could reduce visibilities to less than 3 miles
for mariners. Thought about adding patchy fog to account for this,
but, since the visibility reduction is more so due to heavy rain
than a pure fog by itself, held off on this. That said, the day
shift may need to reconsider this as the event unfolds and we get
better observations on this. As the storm moves ashore, winds will
drop to below gales.

For the remainder of the Bering Sea and the Aleutians, a broad
trough will occupy the region, with a surface trough extending
southward from the Chukchi Sea towards Adak. Along this axis, wind
shifts are expected (although wind speeds below small craft
conditions will have a minimal impact), before a developing low
dives southeast from the western Bering on Thursday, reaching the
central Aleutians (probably near Nikolski) by Friday morning. As
it does so, sustained winds will increase into the 20 to 25 knot
range, with rainfall becoming more widespread.

&&

.MARINE (Days 3 through 5: Friday through Sunday)...

Lingering small craft winds and waves over Bristol Bay diminish
Fri night. A front south of the Aleutians moves into the Gulf of
Alaska for Sat. Confidence is good for small craft winds over and
south of the Aleutians through Sat night. A North Pacific low and
front move into the western Aleutians and Bering through Sun.
While track and development of the low are mixed, confidence is
good for gale force winds to wrap the low with local storm force
winds over the Aleutians through Sun.

A front stretches across the Gulf through Sun. Confidence is good
for small craft winds and waves with local gales around Kodiak
Island dissipating Sat. A second low on the front south of the
Alaska Peninsula moves across the Gulf through Sun. While track
and development vary, confidence is good for small craft winds and
waves to move across the Gulf through Sun.

&&

.LONG TERM FORECAST (Days 3 through 7)...

Saturday will see a cool upper level trough entrenched over
western Alaska from the Arctic coast southward to the Alaska
Peninsula. With a cut- off low at the tip of this trough tracking
into the southern Gulf of Alaska, it will keep a cloudy, cool and
showery regime over southern Mainland Alaska for most of the
weekend.

On Saturday night, a large low will move into the western Bering
Sea and the south of the Alaska Peninsula by Tuesday. While there
is uncertainty to the exact track of this low, the general
pattern shows the strongest winds and heaviest rain will remain
over coastal and marine areas in the Bering Sea and Gulf of Alaska
for the first half of next week.

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale Warning 150 155 119 125 130 131 132.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...AS
SOUTHCENTRAL ALASKA...JW
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...PD
MARINE/LONG TERM...MK/EZ

SPECIAL WEATHER STATEMENT
National Weather Service ANCHORAGE AK
443 AM AKDT Wed Sep 16 2020

AKZ101-170200-
Anchorage-
Including the cities of Anchorage, Eagle River, Indian,
and Eklutna
443 AM AKDT Wed Sep 16 2020

...STRONG WINDS EXPECTED ALONG TURNAGAIN ARM AND HIGHER ELEVATIONS
LATE TONIGHT INTO THURSDAY NIGHT...

The third strong wind event of the Fall season will be impacting
Southcentral late tonight through Thursday night. A strong front
moving across the Gulf will cause winds to increase along
Turnagain Arm and higher elevations starting late tonight, and
persisting into Thursday night. Sustained winds of 45 to 60 mph
with gusts up to 70 mph are expected in these areas, with the peak
winds expected around midday Thursday. Gusts to 60 mph are also
possible on the Lower Hillside around the same time. For east
Anchorage and the Bowl, there may be a few wind gusts to 35 mph at
times during the day Thursday. The greatest chance of gusty winds
of 30 to 40 mph is expected Thursday night for the Anchorage Bowl.

Precautions should be taken today to secure loose objects. The
winds will also have the potential to bring down branches and
small trees, as most trees still have most of their leaves and
will be more susceptible to tree damage from the winds.

AKZ125-145-170200-
Western Prince William Sound-Susitna Valley-
Including the cities of Whittier, Seward, Girdwood, Moose Pass,
Talkeetna, Willow, and Cantwell
443 AM AKDT Wed Sep 16 2020

...HEAVY RAIN TO ELEVATE RIVER LEVELS IN THE SEWARD AREA AND THE
WESTERN SUSITNA VALLEY LATE TONIGHT INTO THURSDAY...

A strong front moving across Southcentral late tonight into
Thursday will cause periods of heavy rain to develop in the Seward
area and western Susitna Valley. For the Seward area, the heavy
rain may begin by midnight tonight, persisting into the afternoon
with the heaviest rain expected Thursday morning. 2 to 3 inches of
rain in 12 hours are possible, which will elevate water levels in
the Resurrection River and other area rivers and streams.

Heavy rain is also expected over the western Susitna Valley from
Thursday morning into Thursday night. 2 to 4 inches of rain over
the headwaters of the Yentna and Skwentna Rivers will also cause
elevated river levels.