Gale Warning 427, NWS Anchorage, AK

039 
FZAK52 PAFC 052347
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
347 PM AKDT Wed Aug 5 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.

PKZ199-061230-
347 PM AKDT Wed Aug 5 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 987 mb low over St George Island moves to 20 nm North of Cape
Newenham for Thu afternoon. Its front wrapping the low moves over
the Eastern Bering by Fri morning. A 994 mb Anadyr low extends a 
front across the Western Bering through Fri afternoon.

$$

PKZ150-061230-
South of the AK Peninsula Sitkinak to Castle Cape-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...S wind 30 kt. Seas 9 ft building to 11 ft after midnight.
Patchy fog. Rain.
.THU...SW wind 30 kt. Seas building to 16 ft in the afternoon.
Widespread rain showers.
.THU NIGHT...SW wind 35 kt. Seas 17 ft. Rain showers.
.FRI...W wind 30 kt. Seas 16 ft.
.FRI NIGHT...W wind 25 kt. Seas 10 ft.
.SAT...W wind 15 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...W wind 15 kt. Seas 5 ft.

$$

PKZ155-061230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...SW wind 35 kt except SW 30 kt from the Shumagin Islands
E. Seas 16 ft. Patchy fog. Widespread rain showers.
.THU...SW wind 35 kt. Seas building to 19 ft. Rain.
.THU NIGHT...W wind 40 kt diminishing to 30 kt after midnight. Seas 
19 ft subsiding to 13 ft after midnight.
.FRI...W wind 30 kt. Seas 12 ft subsiding to 7 ft in the afternoon.
.FRI NIGHT...SW wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...W wind 15 kt. Seas 7 ft.
.MON...S wind 15 kt. Seas 5 ft.

$$

PKZ160-061230-
Bristol Bay-
347 PM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 30 kt becoming S 20 kt after midnight. Seas 6
ft. Patchy fog. Rain.
.THU...S wind 15 kt. Seas 4 ft. Rain.
.THU NIGHT...W wind 20 kt. Seas 5 ft building to 8 ft.
.FRI...W wind 30 kt. Seas 11 ft subsiding to 8 ft in the afternoon.
.FRI NIGHT...W wind 25 kt. Seas 7 ft.
.SAT THROUGH MON...W wind 15 kt. Seas 4 ft.

$$

PKZ165-061230-
Port Heiden to Cape Sarichef-
347 PM AKDT Wed Aug 5 2020

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

.TONIGHT...SW wind 25 kt. Seas 9 ft. Patchy fog. Widespread rain 
showers.
.THU...W wind 35 kt. Seas building to 17 ft except 9 ft from Port 
Moller E. Rain. 
.THU NIGHT...W wind 35 kt. Seas 16 ft subsiding to 13 ft after
midnight.
.FRI...W wind 30 kt. Seas 12 ft subsiding to 8 ft in the afternoon.
.FRI NIGHT...W wind 20 kt. Seas 7 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 4 ft.

$$

PKZ170-061230-
Cape Sarichef to Nikolski Bering Side-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...W wind 35 kt. Seas 15 ft. Patchy fog. Widespread rain
showers.
.THU...W wind 35 kt. Seas 16 ft.
.THU NIGHT...W wind 35 kt diminishing to 25 kt after midnight. Seas 
15 ft.
.FRI...SW wind 20 kt. Seas 9 ft subsiding to 6 ft in the afternoon.
.FRI NIGHT...W wind 15 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 5 ft.
.MON...SE wind 20 kt. Seas 4 ft.

$$

PKZ171-061230-
Unalaska Bay-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...SW wind 35 kt. Seas 5 ft. Patchy fog. Widespread rain
showers.
.THU...W wind 35 kt. Seas 5 ft. Widespread rain showers.
.THU NIGHT...W wind 30 kt diminishing to 20 kt after midnight.
Seas 5 ft subsiding to 3 ft after midnight.
.FRI...SW wind 15 kt. Seas 2 ft.
.FRI NIGHT...W wind 10 kt. Seas 2 ft.
.SAT...SW wind 15 kt. Seas 2 ft.
.SUN...SW wind 10 kt. Seas 2 ft.
.MON...SE wind 10 kt. Seas 2 ft.

$$

PKZ172-061230-
Cape Sarichef to Nikolski Pacific Side-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 18 ft. Patchy fog. Rain.
.THU...W wind 40 kt. Seas 18 ft.
.THU NIGHT...W wind 35 kt diminishing to 25 kt after midnight.
Seas 13 ft subsiding to 7 ft after midnight.
.FRI...SW wind 15 kt. Seas 7 ft subsiding to 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...SW wind 20 kt. Seas building to 7 ft.
.SUN...SW wind 15 kt. Seas 7 ft.
.MON...SE wind 20 kt. Seas 6 ft.

$$

PKZ173-061230-
Nikolski to Seguam Island Bering Side-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 16 ft. Patchy fog.
.THU...W wind 30 kt. Seas 14 ft subsiding to 9 ft in the afternoon. 
Patchy fog.
.THU NIGHT...W wind 20 kt. Seas 9 ft.
.FRI...W wind 15 kt. Seas 7 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN THROUGH MON...SE wind 20 kt. Seas 7 ft.

$$

PKZ174-061230-
Nikolski to Seguam Island Pacific Side-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 17 ft. Patchy fog.
.THU...W wind 30 kt. Seas 15 ft subsiding to 10 ft in the afternoon.
Patchy fog.
.THU NIGHT...W wind 20 kt. Seas 8 ft.
.FRI AND FRI NIGHT...W wind 15 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN THROUGH MON...SE wind 20 kt. Seas 8 ft.

$$

PKZ175-061230-
Seguam Island to Adak Bering Side-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 15 ft subsiding to 12 ft after midnight.
Patchy fog.
.THU...W wind 25 kt. Seas 10 ft subsiding to 7 ft. Patchy fog.
.THU NIGHT...W wind 15 kt. Seas 7 ft.
.FRI...W wind 15 kt. Seas 5 ft.
.FRI NIGHT...W wind 25 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...SE wind 20 kt. Seas 7 ft.

$$

PKZ176-061230-
Seguam Island to Adak Pacific Side-
347 PM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...W wind 30 kt. Seas 14 ft subsiding to 10 ft after midnight.
Patchy fog.
.THU...W wind 25 kt. Seas 10 ft subsiding to 7 ft after midnight. Patchy
fog.
.THU NIGHT...SW wind 15 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 4 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN THROUGH MON...SE wind 20 kt. Seas 8 ft.

$$

PKZ177-061230-
Adak to Kiska-
347 PM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Seas 10 ft subsiding to 7 ft after midnight.
Patchy fog.
.THU...W wind 20 kt. Seas 7 ft. Patchy fog.
.THU NIGHT...SW wind 15 kt. Seas 5 ft.
.FRI...NW wind 20 kt. Seas 5 ft.
.FRI NIGHT...W wind 25 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN...SE wind 25 kt. Seas 9 ft.
.MON...SE wind 20 kt. Seas 10 ft.

$$

PKZ178-061230-
Kiska to Attu-
347 PM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Seas 8 ft. Patchy fog.
.THU...W wind 15 kt. Seas 6 ft. Patchy fog.
.THU NIGHT...NW wind 15 kt. Seas 5 ft.
.FRI AND FRI NIGHT...W wind 25 kt. Seas 7 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN...E wind 25 kt. Seas 10 ft.
.MON...S wind 20 kt. Seas 10 ft.

$$

PKZ179-061230-
Pribilof Islands Near Shore Waters-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...NW wind 20 kt increasing to 35 kt after midnight. Seas
6 ft building to 11 ft after midnight. Patchy fog. Widespread rain
showers.
.THU...NW wind 35 kt. Seas 13 ft. Rain.
.THU NIGHT...NW wind 25 kt. Seas 10 ft subsiding to 7 ft after
midnight.
.FRI...W wind 15 kt. Seas 6 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 5 ft.
.SUN...S wind 15 kt. Seas 4 ft.
.MON...SE wind 15 kt. Seas 4 ft.

$$

PKZ180-061230-
Kuskokwim Delta and Etolin Strait-
347 PM AKDT Wed Aug 5 2020

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

.TONIGHT...SE wind 25 kt. Seas 7 ft. Patchy fog. Rain.
.THU...E wind 15 kt becoming NW in the afternoon. Seas 6 ft. Rain.
.THU NIGHT...NW wind 30 kt. Seas building to 11 ft before midnight.
.FRI...W wind 30 kt. Seas 11 ft subsiding to 7 ft in the afternoon.
.FRI NIGHT...W wind 20 kt. Seas 6 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...S wind 10 kt. Seas 4 ft.

$$

PKZ181-061230-
North and West of Nunivak Island-
347 PM AKDT Wed Aug 5 2020

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

.TONIGHT...NE wind 25 kt. Seas 7 ft. Patchy fog. Rain.
.THU...N wind 30 kt. Seas building to 10 ft. Patchy fog. Rain.
.THU NIGHT...NW wind 30 kt. Seas 11 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...S wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 3 ft.

$$

PKZ185-061230-
Saint Matthew Island Waters-
347 PM AKDT Wed Aug 5 2020

...GALE WARNING THURSDAY...

.TONIGHT...N wind 30 kt. Seas 8 ft. Patchy fog. Rain.
.THU...E of Saint Matthew Island, N wind 35 kt. W of Saint Matthew
Island, NW wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft. Patchy fog. Rain.
.THU NIGHT...NW wind 30 kt E of Saint Matthew Island...NW 20 kt W
of Saint Matthew Island. Seas 8 ft.
.FRI...SW wind 20 kt. Seas 6 ft.
.FRI NIGHT...S wind 15 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 5 ft.
.SUN THROUGH MON...SE wind 15 kt. Seas 4 ft.

$$

600 
FZAK52 PAFC 061130
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
330 AM AKDT Thu Aug 6 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.

PKZ199-070015-
330 AM AKDT Thu Aug 6 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 985 mb low 90 nm west of Cape Newenham moves onshore at 989 mb 
Thu evening. A 994 mb Gulf of Anadyr low moves to 135 nm west of
Saint Matthew Island by Sat morning. Its front enters the western
Bering Fri morning and moves to the central Bering by Sat morning.

$$

PKZ150-070015-
South of the AK Peninsula Sitkinak to Castle Cape-
330 AM AKDT Thu Aug 6 2020

...GALE WARNING TONIGHT...

.TODAY...SW wind 30 kt. Seas 14 ft. Widespread rain showers.
.TONIGHT...W wind 35 kt. Seas 17 ft. Rain showers.
.FRI...W wind 30 kt. Seas 15 ft.
.FRI NIGHT...W wind 20 kt. Seas 10 ft.
.SAT...W wind 15 kt. Seas 8 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 7 ft.

$$

PKZ155-070015-
South of the AK Peninsula Castle Cape to Cape Sarichef-
330 AM AKDT Thu Aug 6 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 40 kt. Gusts to 55 kt out of bays and passes. Seas 
18 ft. Widespread rain showers.
.TONIGHT...W wind 35 kt. gusts to 55 kt out of bays and passes. Seas
18 ft.
.FRI...W wind 25 kt becoming SW 15 kt in the afternoon. From the
Shumagin Islands E, W wind 30 kt. Seas 12 ft.
.FRI NIGHT...SW wind 15 kt. Seas 6 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 7 ft.
.MON...S wind 15 kt. Seas 6 ft.

$$

PKZ160-070015-
Bristol Bay-
330 AM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY FRIDAY...

.TODAY...S wind 15 kt. Seas 4 ft. Widespread rain showers.
.TONIGHT...W wind 10 kt increasing to 20 kt after midnight. Seas
6 ft.
.FRI...W wind 30 kt. Seas 10 ft.
.FRI NIGHT...W wind 25 kt. Seas 7 ft.
.SAT THROUGH MON...W wind 15 kt. Seas 4 ft.

$$

PKZ165-070015-
Port Heiden to Cape Sarichef-
330 AM AKDT Thu Aug 6 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt except SW 25 kt from Port Moller E. Seas 17
ft except 10 ft from Port Moller E. Widespread rain showers.
.TONIGHT...W wind 30 kt. Seas 15 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.FRI NIGHT...SW wind 15 kt. Seas 7 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 4 ft.

$$

PKZ170-070015-
Cape Sarichef to Nikolski Bering Side-
330 AM AKDT Thu Aug 6 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 16 ft.
.TONIGHT...W wind 30 kt diminishing to 20 kt after midnight. Seas 14
ft subsiding to 10 ft after midnight.
.FRI...SW wind 15 kt. Seas 8 ft.
.FRI NIGHT...W wind 15 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 5 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...SE wind 20 kt. Seas 5 ft.

$$

PKZ171-070015-
Unalaska Bay-
330 AM AKDT Thu Aug 6 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 5 ft. Rain showers.
.TONIGHT...W wind 30 kt diminishing to 15 kt after midnight. Seas 5 
ft subsiding to 3 ft after midnight.
.FRI...SW wind 15 kt becoming W in the afternoon. Seas 2 ft.
.FRI NIGHT...W wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...SW wind 15 kt. Seas 2 ft.
.MON...SE wind 10 kt. Seas 2 ft.

$$

PKZ172-070015-
Cape Sarichef to Nikolski Pacific Side-
330 AM AKDT Thu Aug 6 2020

...GALE WARNING TODAY...

.TODAY...W wind 40 kt. Seas 18 ft.
.TONIGHT...W wind 30 kt diminishing to 20 kt after midnight. Seas 13
ft subsiding to 9 ft after midnight.
.FRI...SW wind 15 kt. Seas 7 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT THROUGH SUN...SW wind 20 kt. Seas 7 ft.
.MON...SE wind 20 kt. Seas 6 ft.

$$

PKZ173-070015-
Nikolski to Seguam Island Bering Side-
330 AM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 30 kt. Seas 13 ft. Patchy fog.
.TONIGHT...W wind 20 kt. Seas 9 ft.
.FRI...SW wind 15 kt. Seas 7 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN...S wind 20 kt. Seas 6 ft.
.MON...SE wind 20 kt. Seas 7 ft.

$$

PKZ174-070015-
Nikolski to Seguam Island Pacific Side-
330 AM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 30 kt. Seas 15 ft. Patchy fog.
.TONIGHT...W wind 20 kt. Seas 8 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN...S wind 20 kt. Seas 7 ft.
.MON...SE wind 20 kt. Seas 9 ft.

$$

PKZ175-070015-
Seguam Island to Adak Bering Side-
330 AM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt. Seas 10 ft. Patchy fog.
.TONIGHT...SW wind 15 kt. Seas 7 ft.
.FRI...Variable wind 10 kt. Seas 6 ft.
.FRI NIGHT...W wind 25 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...SE wind 25 kt. Seas 7 ft.

$$

PKZ176-070015-
Seguam Island to Adak Pacific Side-
330 AM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt. Seas 9 ft. Patchy fog.
.TONIGHT...SW wind 15 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 4 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN...SE wind 20 kt. Seas 6 ft.
.MON...S wind 20 kt. Seas 10 ft.

$$

PKZ177-070015-
Adak to Kiska-
330 AM AKDT Thu Aug 6 2020

.TODAY...W wind 20 kt. Seas 7 ft. Patchy fog.
.TONIGHT...SW wind 15 kt. Seas 5 ft.
.FRI...W wind 15 kt. Seas 4 ft.
.FRI NIGHT...W wind 25 kt. Seas 6 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SUN THROUGH MON...SE wind 25 kt. Seas 10 ft.

$$

PKZ178-070015-
Kiska to Attu-
330 AM AKDT Thu Aug 6 2020

.TODAY...W wind 15 kt. Seas 6 ft. Patchy fog.
.TONIGHT...NW wind 15 kt. Seas 4 ft.
.FRI...W wind 20 kt. Seas 5 ft. Patchy fog.
.FRI NIGHT...W wind 25 kt. Seas 7 ft.
.SAT...SW wind 30 kt. Seas 6 ft.
.SUN...E wind 30 kt. Seas 10 ft.
.MON...E wind 20 kt. Seas 10 ft.

$$

PKZ179-070015-
Pribilof Islands Near Shore Waters-
330 AM AKDT Thu Aug 6 2020

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 13 ft.
.TONIGHT...NW wind 25 kt becoming W 15 kt after midnight. Seas
10 ft.
.FRI...W wind 15 kt. Seas 6 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 4 ft.
.MON...SE wind 15 kt. Seas 6 ft.

$$

PKZ180-070015-
Kuskokwim Delta and Etolin Strait-
330 AM AKDT Thu Aug 6 2020

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

.TODAY...E wind 15 kt becoming NW in the afternoon. Seas 6 ft.
.TONIGHT...NW wind 20 kt in the evening increasing to 30 kt. Seas 7
ft in the evening building to 10 ft.
.FRI...W wind 30 kt. Seas 10 ft.
.FRI NIGHT...W wind 20 kt. Seas 6 ft.
.SAT...S wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...SW wind 15 kt. Seas 4 ft.

$$

PKZ181-070015-
North and West of Nunivak Island-
330 AM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...N wind 30 kt. Seas 10 ft. Patchy fog. Rain showers.
.TONIGHT...NW wind 30 kt. Seas 10 ft.
.FRI...NW wind 25 kt. Seas 7 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...SE wind 15 kt. Seas 3 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.
.MON...S wind 15 kt. Seas 3 ft.

$$

PKZ185-070015-
Saint Matthew Island Waters-
330 AM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt E of Saint Matthew Island...N 25 kt W of
Saint Matthew Island. Seas 10 ft. Patchy fog.
.TONIGHT...NW wind 30 kt E of Saint Matthew Island... NW 20 kt W
of Saint Matthew Island. Seas 8 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.FRI NIGHT...S wind 20 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 4 ft.
.MON...SE wind 15 kt. Seas 5 ft.

$$

119 
FZAK52 PAFC 062344
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
344 PM AKDT Thu Aug 6 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.

PKZ199-071230-
344 PM AKDT Thu Aug 6 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A front over the Eastern Bering and Aleutians will weaken through 
Fri afternoon. A new front enters the Western Bering Fri morning. 
The associated 994 Gulf of Anadyr low moves to 300 nm northwest of St
Paul at 1000 mb by Sat morning and then moves to 140 nm northwest of
St Paul at 1001 mb by Sat afternoon.

$$

PKZ150-071230-
South of the AK Peninsula Sitkinak to Castle Cape-
344 PM AKDT Thu Aug 6 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt. Seas 16 ft.
.FRI...W wind 30 kt. Seas 15 ft.
.FRI NIGHT...W wind 20 kt in the evening becoming variable 10 kt.
Seas 9 ft subsiding to 5 ft after midnight.
.SAT...N wind 20 kt. Seas 4 ft.
.SAT NIGHT...W wind 25 kt. Seas building to 7 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON...W wind 20 kt. Seas 5 ft.
.TUE...S wind 15 kt. Seas 6 ft.

$$

PKZ155-071230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
344 PM AKDT Thu Aug 6 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 17 ft subsiding to 13 ft after
midnight. 
.FRI...W wind 25 kt diminishing to 15 kt in the afternoon. From
the Shumagin Islands E, W wind 30 kt. Seas 12 ft subsiding to 7 ft in
the afternoon.
.FRI NIGHT...SW wind 15 kt in the evening becoming variable 10 kt.
Seas 5 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SAT NIGHT...SW wind 20 kt. Seas building to 7 ft after midnight.
.SUN...SW wind 25 kt. Seas 8 ft.
.MON...S wind 15 kt. Seas 6 ft.
.TUE...S wind 20 kt. Seas 6 ft.

$$

PKZ160-071230-
Bristol Bay-
344 PM AKDT Thu Aug 6 2020

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

.TONIGHT...W wind 20 kt. Seas 6 ft building to 8 ft after midnight.
.FRI...W wind 30 kt. Seas 10 ft subsiding to 7 ft in the afternoon.
.FRI NIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Seas 7 ft subsiding to 5 ft after midnight.
.SAT...W wind 10 kt. Seas 3 ft.
.SAT NIGHT...W wind 15 kt. Seas 3 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...W wind 15 kt. Seas 3 ft.
.TUE...SE wind 15 kt. Seas 3 ft.

$$

PKZ165-071230-
Port Heiden to Cape Sarichef-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...W wind 30 kt. Seas 15 ft. Rain showers.
.FRI...W wind 30 kt. Seas subsiding to 9 ft before noon.
.FRI NIGHT...SW wind 15 kt. Seas 7 ft.
.SAT AND SAT NIGHT...SW wind 20 kt. Seas 6 ft.
.SUN...SW wind 20 kt. Seas 8 ft.
.MON...S wind 15 kt. Seas 4 ft.
.TUE...SE wind 15 kt. Seas 3 ft.

$$

PKZ170-071230-
Cape Sarichef to Nikolski Bering Side-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...W wind 30 kt. Seas 13 ft subsiding to 9 ft after midnight. 
.FRI...SW wind 15 kt. Seas 8 ft. 
.FRI NIGHT...SW wind 15 kt. Seas 6 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SAT NIGHT...SW wind 25 kt. Seas building to 8 ft.
.SUN...SW wind 20 kt. Seas 8 ft.
.MON...SE wind 20 kt. Seas 5 ft.
.TUE...S wind 15 kt. Seas 5 ft.

$$

PKZ171-071230-
Unalaska Bay-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 30 kt diminishing to 20 kt after midnight. Seas
5 ft subsiding to 3 ft after midnight.
.FRI...SW wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.FRI NIGHT...Variable wind less than 10 kt becoming W 10 kt after
midnight. Seas 2 ft.
.SAT...W wind 15 kt. Seas 2 ft.
.SAT NIGHT...SW wind 20 kt. Seas 3 ft.
.SUN...SW wind 20 kt. Seas 3 ft.
.MON THROUGH TUE...SE wind 10 kt. Seas 2 ft.

$$

PKZ172-071230-
Cape Sarichef to Nikolski Pacific Side-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 30 kt. Seas 13 ft subsiding to 8 ft before
midnight. 
.FRI...W wind 15 kt in the morning becoming variable 10 kt. Seas
6 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...SW wind 25 kt. Seas building to 7 ft.
.SUN...SW wind 25 kt. Seas 7 ft.
.MON...SE wind 20 kt. Seas 6 ft.
.TUE...S wind 20 kt. Seas 6 ft.

$$

PKZ173-071230-
Nikolski to Seguam Island Bering Side-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 20 kt. Seas 9 ft.
.FRI...SW wind 15 kt. Seas 7 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT AND SAT NIGHT...SW wind 25 kt. Seas 7 ft.
.SUN...SW wind 20 kt. Seas 7 ft.
.MON...SE wind 20 kt. Seas 7 ft.
.TUE...S wind 15 kt. Seas 5 ft.

$$

PKZ174-071230-
Nikolski to Seguam Island Pacific Side-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 20 kt. Seas 8 ft subsiding to 6 ft after midnight. 
.FRI...Variable wind 10 kt. Seas subsiding to 5 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT AND SAT NIGHT...SW wind 20 kt. Seas 6 ft.
.SUN...S wind 20 kt. Seas 7 ft.
.MON THROUGH TUE...S wind 20 kt. Seas 9 ft.

$$

PKZ175-071230-
Seguam Island to Adak Bering Side-
344 PM AKDT Thu Aug 6 2020

.TONIGHT...SW wind 15 kt. Seas 7 ft.
.FRI...W wind 15 kt. Seas 6 ft.
.FRI NIGHT...W wind 20 kt. Seas 4 ft.
.SAT AND SAT NIGHT...SW wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...SE wind 25 kt. Seas 6 ft.
.TUE...S wind 15 kt. Seas 5 ft.

$$

PKZ176-071230-
Seguam Island to Adak Pacific Side-
344 PM AKDT Thu Aug 6 2020

.TONIGHT...SW wind 15 kt. Seas 7 ft subsiding to 5 ft after midnight. 
.FRI...Variable wind 10 kt. Seas 4 ft.
.FRI NIGHT...W wind 15 kt. Seas 4 ft.
.SAT AND SAT NIGHT...SW wind 20 kt. Seas 6 ft.
.SUN...S wind 20 kt. Seas 6 ft.
.MON...S wind 20 kt. Seas 10 ft.
.TUE...S wind 15 kt. Seas 10 ft.

$$

PKZ177-071230-
Adak to Kiska-
344 PM AKDT Thu Aug 6 2020

.TONIGHT...SW wind 15 kt. Seas 5 ft.
.FRI...W wind 15 kt. Seas 4 ft.
.FRI NIGHT...W wind 20 kt. Seas 5 ft. Patchy fog.
.SAT AND SAT NIGHT...SW wind 20 kt. Seas 7 ft.
.SUN THROUGH MON...SE wind 25 kt. Seas 10 ft.
.TUE...SW wind 15 kt. Seas 9 ft.

$$

PKZ178-071230-
Kiska to Attu-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...NW wind 15 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 5 ft. Patchy fog.
.FRI NIGHT...W wind 25 kt. Seas 7 ft. Patchy fog.
.SAT...SW wind 20 kt. Seas 6 ft.
.SAT NIGHT...S wind 30 kt. Seas building to 9 ft.
.SUN...SE wind 30 kt. Seas 11 ft.
.MON...E wind 20 kt. Seas 10 ft.
.TUE...W wind 20 kt. Seas 8 ft.

$$

PKZ179-071230-
Pribilof Islands Near Shore Waters-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 25 kt becoming W 15 kt after midnight. Seas 9 ft
subsiding to 6 ft after midnight.
.FRI...W wind 20 kt. Seas 6 ft.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft. Rain showers.
.SAT AND SAT NIGHT...SW wind 25 kt. Seas building to 8 ft.
.SUN...SW wind 15 kt. Seas 6 ft.
.MON THROUGH TUE...E wind 15 kt. Seas 6 ft.

$$

PKZ180-071230-
Kuskokwim Delta and Etolin Strait-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...NW wind 30 kt. Seas 10 ft.
.FRI...W wind 30 kt. Seas 10 ft subsiding to 6 ft in the afternoon.
.FRI NIGHT...W wind 15 kt diminishing to 10 kt after midnight.
Seas 5 ft.
.SAT...SW wind 15 kt. Seas 3 ft.
.SAT NIGHT...SW wind 20 kt. Seas building to 6 ft.
.SUN THROUGH MON...SW wind 15 kt. Seas 4 ft.
.TUE...SE wind 15 kt. Seas 3 ft.

$$

PKZ181-071230-
North and West of Nunivak Island-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 30 kt. Seas 10 ft subsiding to 6 ft after midnight.
.FRI...NW wind 20 kt. Seas 5 ft.
.FRI NIGHT...W wind 15 kt. Seas 4 ft.
.SAT...S wind 20 kt. Seas 5 ft.
.SAT NIGHT...SE wind 15 kt. Seas 5 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.
.MON...S wind 15 kt. Seas 3 ft.
.TUE...E wind 15 kt. Seas 4 ft.

$$

PKZ185-071230-
Saint Matthew Island Waters-
344 PM AKDT Thu Aug 6 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...E of Saint Matthew Island, NW wind 30 kt diminishing to
15 kt after midnight. W of Saint Matthew Island, SW wind 25 kt.
Seas 8 ft.
.FRI...W wind 15 kt E of Saint Matthew Island...SW 25 kt W of
Saint Matthew Island. Seas 6 ft.
.FRI NIGHT...S wind 20 kt. Seas 6 ft.
.SAT...S wind 20 kt. Seas 5 ft.
.SAT NIGHT...W wind 15 kt. Seas 5 ft.
.SUN...W wind 15 kt. Seas 4 ft.
.MON...SE wind 15 kt. Seas 5 ft.
.TUE...E wind 15 kt. Seas 5 ft.

$$

905 
FZAK52 PAFC 071134
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
334 AM AKDT Fri Aug 7 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.

PKZ199-080100-
334 AM AKDT Fri Aug 7 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A trough over the eastern Bering weakens through Fri afternoon. A
994 mb Gulf of Anadyr low moves to 155 nm west of Saint Lawrence 
Island at 1000 mb by Sat morning then to 130 nm northwest of Saint
Paul at 1006 mb by Sun morning.

$$

PKZ150-080100-
South of the AK Peninsula Sitkinak to Castle Cape-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 30 kt. Seas 14 ft.
.TONIGHT...W wind 20 kt in the evening becoming variable 10 kt.
Seas 9 ft.
.SAT...Variable wind 10 kt becoming NW 20 kt in the afternoon.
Seas 5 ft.
.SAT NIGHT...W wind 25 kt. Seas 7 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON...W wind 20 kt. Seas 8 ft.
.TUE...S wind 15 kt. Seas 6 ft.

$$

PKZ155-080100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt diminishing to 15 kt in the afternoon. From
the Shumagin Islands E, W wind 30 kt. Seas 11 ft.
.TONIGHT...SW wind 15 kt in the evening becoming variable 10 kt.
Seas 5 ft.
.SAT...NW wind 15 kt. Seas 4 ft.
.SAT NIGHT...SW wind 20 kt. Seas 7 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON THROUGH TUE...S wind 15 kt. Seas 7 ft.

$$

PKZ160-080100-
Bristol Bay-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt. Seas 9 ft.
.TONIGHT...W wind 20 kt. Seas 7 ft.
.SAT...W wind 10 kt increasing to 15 kt in the afternoon. Seas 3
ft.
.SAT NIGHT...W wind 15 kt. Seas 3 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...W wind 15 kt. Seas 5 ft.
.TUE...E wind 15 kt. Seas 3 ft.

$$

PKZ165-080100-
Port Heiden to Cape Sarichef-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 30 kt diminishing to 20 kt in the afternoon. Seas
12 ft subsiding to 9 ft in the afternoon.
.TONIGHT...W wind 15 kt. Seas 6 ft.
.SAT...W wind 20 kt. Seas 4 ft.
.SAT NIGHT...SW wind 20 kt. Seas 7 ft.
.SUN...SW wind 25 kt. Seas 8 ft.
.MON...S wind 15 kt. Seas 6 ft.
.TUE...E wind 20 kt. Seas 6 ft.

$$

PKZ170-080100-
Cape Sarichef to Nikolski Bering Side-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...SW wind 15 kt. Seas 8 ft.
.TONIGHT...SW wind 15 kt. Seas 5 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SAT NIGHT...SW wind 25 kt. Seas 8 ft.
.SUN...SW wind 25 kt. Seas 8 ft.
.MON THROUGH TUE...SE wind 20 kt. Seas 6 ft.

$$

PKZ171-080100-
Unalaska Bay-
334 AM AKDT Fri Aug 7 2020

.TODAY...W wind 15 kt in the morning becoming variable less than
10 kt. Seas 3 ft.
.TONIGHT...Variable wind less than 10 kt becoming W 10 kt after
midnight. Seas 3 ft.
.SAT...SW wind 10 kt. Seas 2 ft.
.SAT NIGHT...SW wind 15 kt. Seas 2 ft.
.SUN...SW wind 20 kt. Seas 3 ft.
.MON...E wind 15 kt. Seas 2 ft.
.TUE...S wind 10 kt. Seas 2 ft.

$$

PKZ172-080100-
Cape Sarichef to Nikolski Pacific Side-
334 AM AKDT Fri Aug 7 2020

.TODAY...W wind 15 kt in the morning becoming variable 10 kt. Seas
6 ft.
.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...SW wind 25 kt. Seas 7 ft.
.SUN...SW wind 25 kt. Seas 8 ft.
.MON...SE wind 20 kt. Seas 6 ft.
.TUE...S wind 15 kt. Seas 8 ft.

$$

PKZ173-080100-
Nikolski to Seguam Island Bering Side-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...Variable wind 10 kt. Seas 6 ft.
.TONIGHT...W wind 15 kt. Seas 4 ft.
.SAT...SW wind 25 kt. Seas 6 ft.
.SAT NIGHT...SW wind 20 kt. Seas 8 ft.
.SUN...SW wind 20 kt. Seas 7 ft.
.MON...E wind 20 kt. Seas 7 ft.
.TUE...S wind 15 kt. Seas 6 ft.

$$

PKZ174-080100-
Nikolski to Seguam Island Pacific Side-
334 AM AKDT Fri Aug 7 2020

.TODAY...Variable wind 10 kt. Seas 5 ft.
.TONIGHT...Variable wind 10 kt. Seas 4 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SAT NIGHT...SW wind 20 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 7 ft.
.MON...SE wind 20 kt. Seas 9 ft.
.TUE...S wind 20 kt. Seas 8 ft.

$$

PKZ175-080100-
Seguam Island to Adak Bering Side-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...W wind 15 kt. Seas 5 ft.
.TONIGHT...W wind 20 kt. Seas 4 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SAT NIGHT...SW wind 25 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 6 ft.
.MON...SE wind 25 kt. Seas 6 ft.
.TUE...S wind 15 kt. Seas 5 ft.

$$

PKZ176-080100-
Seguam Island to Adak Pacific Side-
334 AM AKDT Fri Aug 7 2020

.TODAY...Variable wind 10 kt. Seas 4 ft.
.TONIGHT...W wind 15 kt. Seas 4 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SAT NIGHT...SW wind 20 kt. Seas 6 ft.
.SUN...S wind 20 kt. Seas 6 ft.
.MON...SE wind 20 kt. Seas 10 ft.
.TUE...SW wind 20 kt. Seas 10 ft.

$$

PKZ177-080100-
Adak to Kiska-
334 AM AKDT Fri Aug 7 2020

.TODAY...W wind 15 kt. Seas 4 ft.
.TONIGHT...W wind 20 kt. Seas 5 ft. Patchy fog.
.SAT...W wind 20 kt. Seas 7 ft.
.SAT NIGHT...SW wind 20 kt. Seas 6 ft.
.SUN THROUGH MON...SE wind 25 kt. Seas 10 ft.
.TUE...W wind 15 kt. Seas 9 ft.

$$

PKZ178-080100-
Kiska to Attu-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...W wind 20 kt. Seas 5 ft. Patchy fog.
.TONIGHT...W wind 25 kt. Seas 7 ft. Patchy fog.
.SAT...W wind 20 kt. Seas 7 ft.
.SAT NIGHT...S wind 30 kt. Seas 9 ft.
.SUN...SE wind 30 kt. Seas 11 ft.
.MON THROUGH TUE...NW wind 20 kt. Seas 9 ft.

$$

PKZ179-080100-
Pribilof Islands Near Shore Waters-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...W wind 15 kt. Seas 6 ft.
.TONIGHT...SW wind 20 kt. Seas 4 ft.
.SAT...SW wind 25 kt. Seas 7 ft. Rain showers.
.SAT NIGHT...SW wind 25 kt. Seas 7 ft.
.SUN...W wind 15 kt. Seas 6 ft.
.MON...SE wind 20 kt. Seas 6 ft.
.TUE...E wind 20 kt. Seas 6 ft.

$$

PKZ180-080100-
Kuskokwim Delta and Etolin Strait-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft.
.TONIGHT...W wind 15 kt diminishing to 10 kt after midnight. Seas
5 ft.
.SAT...SW wind 15 kt. Seas 3 ft.
.SAT NIGHT...S wind 20 kt. Seas 5 ft.
.SUN...SW wind 20 kt. Seas 6 ft.
.MON...W wind 10 kt. Seas 5 ft.
.TUE...E wind 15 kt. Seas 5 ft.

$$

PKZ181-080100-
North and West of Nunivak Island-
334 AM AKDT Fri Aug 7 2020

.TODAY...NW wind 20 kt. Seas 5 ft.
.TONIGHT...SW wind 15 kt. Seas 4 ft.
.SAT...SE wind 20 kt. Seas 5 ft.
.SAT NIGHT...SE wind 15 kt. Seas 5 ft.
.SUN THROUGH MON...Variable wind 10 kt. Seas 4 ft.
.TUE...NE wind 15 kt. Seas 5 ft.

$$

PKZ185-080100-
Saint Matthew Island Waters-
334 AM AKDT Fri Aug 7 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 15 kt E of Saint Matthew Island...SW 25 kt W of
Saint Matthew Island. Seas 6 ft.
.TONIGHT...S wind 20 kt. Seas 6 ft.
.SAT...S wind 20 kt. Seas 5 ft.
.SAT NIGHT...N wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 4 ft.
.MON...SE wind 15 kt. Seas 5 ft.
.TUE...NE wind 15 kt. Seas 5 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
559 PM AKDT Tue Aug 4 2020

.ANALYSIS AND UPPER LEVELS...
A vertically stacked low centered just south of the Gulf continues
to slowly fill as it drifts east, while its associated front has
brought Small Craft winds and rain to much of the Gulf Coast
today. Impacts from this system are confined to the Gulf Coast, as
a weak mid level ridge over the Mainland is allowing for generally
sunny skies and light offshore winds for Southcentral and
Southwest. Some weak shortwaves rotating around the outer fringes
of this ridge is allowing for convective development along the
Alaska Range and Talkeetna Mountains. The next system for the
Mainland is beginning to move eastward into the Central Bering,
bringing widespread clouds, gusty winds, and rain to the region.
This system will continue tracking towards the Mainland where it
will begin impacting the West Coast late Wednesday.

&&

.MODEL DISCUSSION...
Synoptic model agreement remains quite good with both the
dissipation of the Gulf low and eastward progression on the
Bering low through Wednesday. Afterwards, the guidance begins to
diverge with the development of a lee side low in the Gulf later
in the week. The last few runs of the NAM and GFS have
consistently indicated stronger solutions than the EC and GEM,
which is not surprising given the mesoscale nature of this
development. The afternoon forecast will continue to trend towards
the stronger NAM/GFS solutions, however we held off on
significant changes and finer scale details until there is better
synoptic scale agreement.

&&

.AVIATION...
PANC...VFR conditions and light winds will persist into Wednesday.
There may be shower activity in the vicinity of the terminal this
afternoon, especially to the east over the Chugach, but at this
point it appears that the majority of the activity will remain
away from the airport.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3/Today
through Thursday)...

A weakening low over the southern Gulf of Alaska continues to
move east with areas of light rain and showers over the
northeastern Gulf coastal areas up to the Prince William Sound. A
shortwave rotating around the north side of low this will produce
showers and isolated thunderstorms across the Copper River Basin
through this evening. Otherwise surface heating and unstable air
will allow showers and a couple of thunderstorms to form over the
Alaska and Talkeetna Mountains this afternoon and this evening.
Tonight most of the showers will end with the exception of eastern
areas of the Copper River Basin where the low pressure system and
another wave rotating around the north side of the low will keep
showers going through tomorrow.

A transitory upper level ridge will move over Southcentral on
Wednesday allowing for slightly warmer temperatures and a thermal
trough to form beneath it. This will allow isolated thunderstorms
to develop mainly over the Alaskan Range, the Talkeetna and
Wrangell mountains. The warmer and drier conditions will
unfortunately end as a strong vertically stacked low tracks to the
eastern Bering Sea Wednesday night, pushing a front into the
western Gulf. A coastal ridge will develop along the north Gulf
coast ahead of this front, increasing the Turnagain Arm winds and
winds into the Anchorage and Matanuska Valley on Wednesday night.
As the upper trough moves into the Gulf Thursday, this will cause
the front to re-orient east-west across the central Gulf. This
will lower pressure over Cook Inlet and cause the Turnagain Arm
jet to bend southward. Winds will ramp up Thursday along Turnagain
Arm and the Anchorage Hillside, but these winds will remain out
of the Anchorage Bowl. The front will stall over the northern Gulf
as a surface low forms in response to the upper low arriving from
the Bering Sea Thursday night. The strongest winds with this
system (not counting gap winds) will remain over the Gulf waters.

Expect moderate to heavy rain as the front moves into Kodiak
Island Wednesday night. This rain will then spread to the Southern
and Eastern Kenai Peninsula on Thursday morning. The rest of
Southcentral will see downsloping flow develop on Thursday with
very little rain for most valley areas with cloudy conditions and
only a brief shower possible.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...

An extensive area of patchy fog has rolled right past Nunivak
Island, Kusko Bay, Kusko Delta and Bethel since this morning. Have
introduced this area into the grids through late tonight, and
adjusted thunderstorms to remain farther east of Bethel but south
of the Kusko Valley and over the Alaska Range for the remainder
of this evening, and again on Wednesday afternoon and Wednesday
night. The highly anticipated wetting rains from the frontal zone
will keep temperatures inland a little bit cooler on Wednesday and
Wednesday night. Computer models show impulses of shower bands
trailing over the region from the upper level low mentioned in the
Bering Sea/Aleutians discussion. This situation could bring
another series of showers between Thursday and Friday, but for
now, will monitor this situation before making new updates.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...

Strong gales associated with the frontal system remain headlined
for several Aleutian marine zones for Wednesday and Wednesday
night. This is thanks to a steeping upper level low over the
Western Bering Sea which will stay south of Pribilof Islands and
much closer to central Aleutians. This will help strengthen the
pressure and wind gradients over an area including Unalaska and
Adak until the upper low shifts toward the Alaska Peninsula on
Thursday morning. The presence of fog and low clouds, small craft
conditions and steady rain will persist over much of the area the
next few days, with the exception of gale force winds over Central
Aleutians between Wednesday and Wednesday night.

&&

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

Bering Sea/Aleutians

A Southwest Alaska low moves into the Gulf of Alaska by Sat.
Confidence is good for rear flank small craft winds and waves over
the Eastern Bering and Bristol Bay diminishing Sat. A low exiting
Anadyr moves across the Bering through Sun. Although model tracks
are mixed, confidence is good for westerly small craft winds to
move across the Bering and diminish Sun. A North Pacific low
approaches the Western Aleutians and Bering for Sun. Confidence is
good for southerly small craft winds with local gales over the
Western Aleutians through Sun.

Gulf of Alaska

A low and its front to the East of Kodiak Island tracks into the
Northeastern Gulf for Sun. With consistent model tracking,
confidence is good for easterly small craft winds and waves
through Sun with local gales near capes ahead of the front for
coastal zones diminishing Sat, and widespread westerly small
craft winds through Sun with local gales diminishing Sat to move
across the Gulf.

&&

.LONG TERM FORECAST (Days 4 through 7: Saturday through
Tuesday)...

A fairly active and progressive longwave pattern looks to set up
this weekend as a series of systems move eastward from the Bering
Sea/Aleutians into the middle of next week. The first of these
will be a developing low diving from Siberia into the Gulf,
bringing cloud cover to much of the South Mainland and rain
primarily to the Gulf Coast. The next low will quickly follow the
Siberian Low, and will be the first in a series of lows moving
into the Bering from Kamchatka. This pattern will allow for
generally cloudy, cool conditions for much of the area, with
storminess for the Bering Sea and Gulf of Alaska.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...GALES: 171-176.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...DK
SOUTHCENTRAL ALASKA...RC/MSO
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...CB
MARINE/LONG TERM...MK/DK