Gale Warning 425, NWS Anchorage, AK

795 
FZAK52 PAFC 051131
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
331 AM 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.

PKZ199-060100-
331 AM AKDT Wed Aug 5 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 990 mb low 190 nm north of Adak moves to 85 nm southwest of Cape
Newenham at 986 mb Thu morning then pushes onshore along the north
coast of Bristol Bay at 992 mb by Fri morning. Its front stays 
wrapped around the low as it moves into the eastern Bering by Thu 
morning and over Southwest Alaska by Fri morning.

$$

PKZ150-060100-
South of the AK Peninsula Sitkinak to Castle Cape-
331 AM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 15 kt becoming S 25 kt in the afternoon. Seas 6
ft. Patchy fog. Widespread rain showers.
.TONIGHT...S wind 30 kt. Seas 9 ft. Patchy fog. Rain.
.THU...SW wind 30 kt. Seas 14 ft. Widespread rain showers.
.THU NIGHT...W wind 30 kt. Seas 16 ft.
.FRI...W wind 30 kt. Seas 15 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 8 ft.

$$

PKZ155-060100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...S wind 30 kt. From the Shumagin Islands E, S wind 20 kt
increasing to 30 kt in the afternoon. Seas 9 ft. Patchy fog.
Widespread rain showers.
.TONIGHT...SW wind 35 kt except SW 25 kt from the Shumagin Islands
E. Seas 12 ft building to 17 ft after midnight. Patchy fog.
Widespread rain showers.
.THU...W wind 35 kt. Seas 18 ft. Rain.
.THU NIGHT...W wind 35 kt. Seas 18 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.SAT THROUGH SUN...W wind 15 kt. Seas 7 ft.

$$

PKZ160-060100-
Bristol Bay-
331 AM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...S wind 15 kt becoming SE 25 kt in the afternoon. Seas 4
ft. Patchy fog. Widespread rain showers.
.TONIGHT...SE wind 30 kt becoming S 15 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 6 ft.
.FRI...W wind 30 kt. Seas 9 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SUN...W wind 15 kt. Seas 5 ft.

$$

PKZ165-060100-
Port Heiden to Cape Sarichef-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING THURSDAY...

.TODAY...SE wind 30 kt. Seas 6 ft. Patchy fog. Widespread rain
showers.
.TONIGHT...SW wind 25 kt. Seas 7 ft. Patchy fog. Widespread rain
showers.
.THU...W wind 35 kt except SW 20 kt from Port Moller E. Seas 16 ft
except 8 ft from Port Moller E. Widespread rain showers.
.THU NIGHT...W wind 30 kt. Seas 15 ft.
.FRI...W wind 30 kt. Seas 12 ft.
.SAT THROUGH SUN...SW wind 15 kt. Seas 5 ft.

$$

PKZ170-060100-
Cape Sarichef to Nikolski Bering Side-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...S wind 30 kt becoming W in the afternoon. Seas 8 ft. Patchy
fog. Widespread rain showers.
.TONIGHT...W wind 35 kt. Seas 14 ft. Patchy fog. Rain.
.THU...W wind 35 kt. Gusts to 50 kt. Seas 15 ft.
.THU NIGHT...W wind 30 kt. Seas 14 ft.
.FRI...SW wind 20 kt. Seas 9 ft.
.SAT...SW wind 20 kt. Seas 5 ft.
.SUN...SW wind 15 kt. Seas 5 ft.

$$

PKZ171-060100-
Unalaska Bay-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...S wind 20 kt becoming SW in the afternoon. Seas 3 ft. 
Patchy fog. Widespread rain showers.
.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Gusts to
45 kt after midnight. Seas 5 ft. Patchy fog. Widespread rain 
showers.
.THU...W wind 35 kt. Gusts to 50 kt. Seas 5 ft. Widespread rain 
showers.
.THU NIGHT...W wind 30 kt. Seas 5 ft.
.FRI...W wind 15 kt. Seas 2 ft.
.SAT THROUGH SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ172-060100-
Cape Sarichef to Nikolski Pacific Side-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...SW wind 30 kt. Seas 13 ft. Patchy fog. Rain.
.TONIGHT...W wind 35 kt. Seas 19 ft. Patchy fog. Rain.
.THU...W wind 35 kt. Seas 17 ft.
.THU NIGHT...W wind 30 kt. Seas 12 ft.
.FRI THROUGH SUN...SW wind 15 kt. Seas 7 ft.

$$

PKZ173-060100-
Nikolski to Seguam Island Bering Side-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 35 kt. Seas 13 ft. Patchy fog.
.TONIGHT...W wind 35 kt. Seas 16 ft. Patchy fog.
.THU...W wind 30 kt. Seas 14 ft.
.THU NIGHT...W wind 20 kt. Seas 9 ft.
.FRI...SW wind 15 kt. Seas 7 ft.
.SAT...SW wind 20 kt. Seas 6 ft.
.SUN...S wind 20 kt. Seas 6 ft.

$$

PKZ174-060100-
Nikolski to Seguam Island Pacific Side-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 35 kt. Seas 17 ft. Patchy fog.
.TONIGHT...W wind 35 kt. Seas 17 ft. Patchy fog.
.THU...W wind 30 kt. Seas 15 ft.
.THU NIGHT...W wind 20 kt. Seas 8 ft.
.FRI THROUGH SAT...SW wind 15 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 7 ft.

$$

PKZ175-060100-
Seguam Island to Adak Bering Side-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 35 kt. Seas 14 ft. Patchy fog.
.TONIGHT...W wind 35 kt. Seas 14 ft. Patchy fog.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...W wind 20 kt. Seas 7 ft.
.FRI THROUGH SAT...SW wind 20 kt. Seas 7 ft.
.SUN...SE wind 20 kt. Seas 7 ft.

$$

PKZ176-060100-
Seguam Island to Adak Pacific Side-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 15 ft. Patchy fog.
.TONIGHT...W wind 30 kt. Seas 14 ft. Patchy fog.
.THU...W wind 25 kt. Seas 9 ft.
.THU NIGHT...W wind 20 kt. Seas 6 ft.
.FRI THROUGH SAT...SW wind 15 kt. Seas 6 ft.
.SUN...SE wind 20 kt. Seas 6 ft.

$$

PKZ177-060100-
Adak to Kiska-
331 AM AKDT Wed Aug 5 2020

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 13 ft. Patchy fog.
.TONIGHT...W wind 25 kt. Seas 10 ft. Patchy fog.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...W wind 15 kt. Seas 6 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT...SW wind 20 kt. Seas 6 ft.
.SUN...SE wind 25 kt. Seas 9 ft.

$$

PKZ178-060100-
Kiska to Attu-
331 AM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

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

$$

PKZ179-060100-
Pribilof Islands Near Shore Waters-
331 AM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 25 kt in the morning becoming variable 10 kt.
Seas
7 ft. Patchy fog. Widespread rain showers.
.TONIGHT...NW wind 10 kt in the evening increasing to 30 kt. Seas 6 
ft building to 11 ft after midnight. Patchy fog. Widespread rain 
showers.
.THU...NW wind 30 kt. Seas 12 ft. Rain.
.THU NIGHT...W wind 25 kt. Seas 9 ft.
.FRI...SW wind 20 kt. Seas 6 ft.
.SAT...S wind 20 kt. Seas 4 ft.
.SUN...S wind 15 kt. Seas 4 ft.

$$

PKZ180-060100-
Kuskokwim Delta and Etolin Strait-
331 AM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 20 kt increasing to 30 kt in the afternoon. Seas
3 ft building to 7 ft in the afternoon. Patchy fog. Widespread
rain showers.
.TONIGHT...SE wind 25 kt diminishing to 15 kt after midnight. Seas
7 ft. Patchy fog. Widespread rain showers.
.THU...W wind 15 kt becoming NW 25 kt in the afternoon. Seas 7 ft.
Rain.
.THU NIGHT...NW wind 30 kt. Seas 9 ft.
.FRI...W wind 30 kt. Seas 9 ft.
.SAT...SW wind 15 kt. Seas 5 ft.
.SUN...SW wind 10 kt. Seas 4 ft.

$$

PKZ181-060100-
North and West of Nunivak Island-
331 AM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TODAY...E wind 20 kt. Seas 4 ft. Patchy fog. Rain.
.TONIGHT...NE wind 20 kt. Seas 7 ft. Patchy fog. Rain.
.THU...N wind 30 kt. Seas 10 ft. Rain.
.THU NIGHT...NW wind 25 kt. Seas 10 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT...S wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.

$$

PKZ185-060100-
Saint Matthew Island Waters-
331 AM AKDT Wed Aug 5 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 25 kt. Seas 6 ft. Patchy fog. Rain.
.TONIGHT...N wind 25 kt. Seas 7 ft. Patchy fog. Rain.
.THU...E of Saint Matthew Island, N wind 25 kt. W of Saint Matthew
Island, NW wind 25 kt diminishing to 15 kt in the afternoon. Seas
9 ft. Rain.
.THU NIGHT...NW wind 25 kt. Seas 8 ft.
.FRI...SW wind 20 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 5 ft.
.SUN...SE wind 15 kt. Seas 4 ft.

$$

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.

$$

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

.ANALYSIS AND UPPER LEVELS...

A broad surface low is spinning up well south of Kodiak Island
this morning. Its associated front is oriented west to east and is
slowly lifting north from the southern Gulf. Both features are
well-defined on infrared and water vapor imagery and the placement
of the front is further defined by the most recent ASCAT
scatterometer pass, indicating southwesterly winds of 15 kts over
the southern Gulf and easterly winds up to 20 kts over the
northern Gulf, ahead of the front. The combination of the easterly
flow with a shortwave stretching from Kodiak Island to Yakutat is
bringing rain and gusty northeasterly surface winds to the
eastern half of the island this morning as well as showers to the
immediate Southcentral coast. Farther north, an upper-level ridge
over the interior of the state is elongating and sliding
southwest in response to the vertically stacked low to the south
moving slowly to the north and east. Between these two features,
there is cyclonic flow along with weak pulses of energy in the
mid-levels. One is moving near Bristol Bay with shower activity
from this system persisting from Kipnuk to Port Heiden this
morning. The second is near the Al-Can border with most of the
cloud cover and shower activity from this feature staying north of
the Alaska Range.

Farther west, the main weather feature is a deepening surface low
west of Attu. This feature is producing widespread rain and gusty
southeasterly winds along its associated warm front draped over
the western Aleutians. The surface low is getting plenty of
upper-level support as it sits in the left exit region of a 120
kt jet streak at 30,000 ft (300 mb). This system is also aided by
a vigorous short wave at 500 mb diving southeast from the Russian
coast.

&&

.MODEL DISCUSSION...

Models remain in good agreement through the short term, although
there are some minor, yet persistent, differences between models
and model runs. One difference remains the evolution of the
surface low developing southeast of Kodiak Island. The American
Models (NAM/GFS) continue to keep the feature slightly stronger,
but the 00z runs of the EC and GEM have trended to the NAM and
GFS. The differences become greater by Wednesday afternoon as the
low weakens and moves to the eastern Gulf. The NAM and GEM keep
this feature stronger and more compact than the EC and GFS, which
open this feature into a wave. By Thursday, the NAM is the only
one to keep a closed low south of Sitka. In the upper-levels, this
translates to the NAM holding onto a stronger and more elongated
feature along the AK Panhandle coast. Given this, the NAM is also
bringing stronger easterly waves around this feature into the
Copper River Basin and across a larger area of Southcentral.
Overall, the other models are weaker with the waves and have
trended weaker. Thus, the NAM is seen as the outlier.

Out west, models are in very good agreement with the strength and
track of the surface low from west of Attu this morning to the
west coast by Thursday. Guidance, however, appears to be
downplaying the strength of the winds wrapping underneath it as a
secondary upper-level shortwave dives south of the main feature
in conjunction with cold air advection. Deterministic runs of the
global models keep winds just shy of gales. Boundary layer winds
and hi-res models, though, suggest an area of gale-force winds
southwest of the center of circulation developing by Wednesday
morning over the central Aleutians and progressing east to the
AKPEN by Thursday. Given a trend in stronger winds with the most
recent GFS and NAM (00z) runs, and gales in the hi-res models,
gale force winds have been introduced over the aforementioned
areas in the morning forecast package.

&&

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

&&

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

A weakening low over the Southern Gulf of Alaska is bringing rainy
conditions to Kodiak Island today. An associated elongated trough
and surface front will lift northward across the Gulf today. This
will bring some showers to the Gulf coast, but the bulk of rain
will remain over the Gulf. As the low continues to the eastern
Gulf this afternoon and evening, rain and winds will diminish
across the western Gulf and Kodiak Island. The rest of
Southcentral will remain under weak cyclonic flow aloft. With
some sunshine expected today this will lead to some afternoon
and evening showers, particularly along the mountains. As the
low in the Gulf continues eastward tonight, weak upper waves
rotating around the north side of the low will cross the eastern
Copper River Basin and rotate southwestward to eastern Prince
William Sound. While none of these waves appears particularly
strong, this will result in numerous showers through this corridor
tonight through Wednesday.

A weak upper ridge will move overhead of Southcentral on
Wednesday. A thermal trough will strengthen beneath it, leading
to isolated thunderstorms across inland areas. The overall warmer
and drier conditions today and tomorrow will be short-lived as a
strong vertically stacked low tracks to the eastern Bering Sea
Wednesday night, pushing a front into the western Gulf. An east-
west oriented ridge will build along the north Gulf coast ahead
of this front, increasing the Turnagain Arm winds and bringing
gusty winds to the Anchorage and Matanuska Valley Areas on
Wednesday night. The upper trough over the eastern Bering will
then dig eastward across the Gulf Thursday, causing the front to
re-orient east-west across the central Gulf. This in turn 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. Thus, the strongest winds with this
system (not counting gap winds) will be over the Gulf waters.

Expect moderate to heavy rain with the arrival of the front in
Kodiak Wednesday night. This rain will then spread to the southern
to eastern Kenai Peninsula on Thursday. Based on the aforementioned
change in orientation of the front, precipitation over eastern
Prince William Sound will much lighter. For the rest of
Southcentral, strong low level southeasterly and easterly flow
will lead to downslope drying, so most areas will remain dry or
will see only a brief period of light rain.

&&

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

An active pattern will evolve over the next few days, bringing
multiple rounds of potential convection, with rainfall becoming
more widespread Wednesday into the first half of Thursday, before
a more showery type pattern takes hold. As for convection, look
for the potential to develop during the afternoon and evening the
next three days, with the best chance being east of a Sleetmute to
King Salmon line (minus the Lake Iliamna area due to a lake-
induced stable layer near the lake). Here, similar to yesterday,
models project LI's (lifted indices) of -2 to -3 with 1000-500
MUCAPES (another instability parameter, most unstable convective
available potential energy) of 400 to 900 J/kg today and
Wednesday. However, relatively meager low and mid level lapse
rates may help mitigate this.

Another area or two that may see a few storms develop would be the
Kilbuck Mountains, and the Alaska Peninsula. However, instability
is weaker here, but still sufficient that it can't be ruled out.
This convective potential is more uncertain for Thursday, as how
much airmass recovery (aided by breaks in cloud cover) can occur.

The other item of interest will be a front reaching the coast
Wednesday evening, pushing inland on Thursday while weakening as
frontolysis (the weakening of a front) ensues as it enters an
occlusion phase (essentially where the cold front catches up to
and merges with the warm front). Widespread rainfall will
accompany this feature, some of which may be of moderate intensity
with decent rain rates, due to a semi-tropical connection.

&&

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

This morning's water vapor imagery shows tropical moisture being
pulled up into the western Aleutians, aided by a low to the
southeast of Japan. This has led to fairly decent cloud top
cooling in the infra-red satellite imagery (indicative of decent
rain rates), with Shemya having bounced around between 3/4 of a
mile and 3 miles visibility. This moisture feed aided by warming
just above the surface, will interact with additional shortwave
energy diving into the base of a developing trough, helping to
allow the storm to maintain its current strength being in the mid
980 mb range as it treks eastward, reaching Bristol Bay by early
Thursday morning.

As it does so, a strong front will sweep eastward while
accompanied by a steady rainfall. The system will also begin to
become vertically stacked in the Wednesday through Thursday.
Strong dry advection behind the front and respectable cold air
advection aloft will tighten the pressure gradient enough to allow
sustained gales to develop during this time, mainly along and
south of the east central Aleutians and Alaska Peninsula (AKPEN).
Here, given a long dynamic fetch, waves building into the 15 to 20
feet range are a distinct possibility.

&&

.MARINE (Days 3 through 5:Thursday through Saturday)...

Bering Sea/Aleutians

A low over the eastern Bering on Thu will move onshore over the
AK mainland Fri. Forecast confidence has increased that there
should be Gale force gusts from the Pribilofs south towards the
eastern Aleutians and AKPEN through Fri morning. These winds will
be amplified in the terrain gaps. By Fri afternoon forecast
confidence is moderate that a low will enter the western Bering,
with the primary warm front reaching the central Aleutians on Sat.
Winds should be lighter with some small craft advisory winds
possible over the central Aleutians.

Gulf of Alaska

A front will move east across the Gulf of Alaska through Fri night
with a triple point low forming to the east of Kodiak Island Fri
morning. Confidence is moderate on Fri in regards to a barrier jet
setting up along the Northern Gulf Coast north of the low. This
would bring small craft easterly winds to the coastline.
Otherwise, forecast confidence is good that small craft westerly
winds should persist to the south of Kodiak through Fri night. By
Sat the low should move onshore, which will help keep winds light
and westerly across the Gulf.

&&

.LONG TERM FORECAST (Days 4 through 7:Friday through Monday)...

A broad longwave trough extending from far eastern Siberia to
Southeast Alaska should continue the cool and wet pattern. The
main, or strongest, upper level low should be over Southwest
Alaska on Friday with a front extending into the Gulf of Alaska.
This system should push east through Sunday, bringing rain and
cooler temperatures to the Alaska mainland. Model uncertainty
increases on after Sunday, with the GFS solution indicating strong
ridging in the wake of the aforementioned system while the
ECMWF/Canadian models have a more zonal jetstream. The GFS
solution would bring a return to summer-like weather of warm
temperatures and sunny skies from the Akpen to Southcentral,
while the other solutions would likely keep things cooler and
continue the fall-like pattern. Regardless, guidance is in good
agreement on Mon as the next system arrives in the Western Bering.
The exact weather impacts of this system are still uncertain but
long term guidance does indicate a long, deep moisture fetch
coming into the region from the Central Pacific early next week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale Warning 176.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...TM
SOUTHCENTRAL ALASKA...SEB/KM
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...PD
MARINE/LONG TERM...CJ