Gale Warning 370, NWS Anchorage, AK

631 
FZAK52 PAFC 191147
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
347 AM AKDT Tue May 19 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.

PKZ199-200115-
347 AM AKDT Tue May 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 974 mb low at 200 nm south of Attu moves to 100 nm south of 
Adak at 981 mb by Wed morning. It stalls 100 nm north of Adak by 
Wed night. Its front tracks across the Aleutians and Bristol Bay 
through Thu morning.

$$

PKZ150-200115-
South of the AK Peninsula Sitkinak to Castle Cape-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 25 kt. Seas 10 ft.
.TONIGHT...W wind 20 kt. Seas 10 ft.
.WED...SE wind increasing to 25 kt. Seas 9 ft.
.WED NIGHT...SE wind 30 kt. Seas 11 ft.
.THU...S wind 25 kt. Seas 11 ft.
.FRI...SE wind 20 kt. Seas 10 ft.
.SAT...S wind 15 kt. Seas 10 ft.

$$

PKZ155-200115-
South of the AK Peninsula Castle Cape to Cape Sarichef-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 25 kt. Seas 13 ft.
.TONIGHT...SW wind 20 kt becoming SE 30 kt after midnight W of the 
Shumagin Islands. Seas 11 ft.
.WED...SE wind 30 kt. Seas 13 ft. Rain showers.
.WED NIGHT...S wind 30 kt. Seas 13 ft.
.THU THROUGH FRI...S wind 20 kt. Seas 13 ft.
.SAT...S wind 15 kt. Seas 9 ft.

$$

PKZ160-200115-
Bristol Bay-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...W wind 20 kt. Seas 4 ft.
.TONIGHT...SW wind 15 kt becoming S 10 kt after midnight. Seas 4 ft.
.WED...SE wind increasing to 25 kt. Seas 4 ft.
.WED NIGHT...SE wind 30 kt. Seas 7 ft.
.THU...SE wind 30 kt. Seas 6 ft.
.FRI...E wind 20 kt. Seas 4 ft.
.SAT...E wind 15 kt. Seas 4 ft.

$$

PKZ165-200115-
Port Heiden to Cape Sarichef-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY TONIGHT AND WEDNESDAY...

.TODAY...SW wind 15 kt. Seas 4 ft.
.TONIGHT...S wind 20 kt becoming SE 30 kt after midnight W of Port
Moller. Seas 5 ft.
.WED...SE wind 30 kt. Seas 7 ft.
.WED NIGHT...SE wind 30 kt. Seas 6 ft.
.THU...S wind 25 kt. Seas 6 ft.
.FRI THROUGH SAT...SE wind 20 kt. Seas 5 ft.

$$

PKZ170-200115-
Cape Sarichef to Nikolski Bering Side-
347 AM AKDT Tue May 19 2020

...GALE WARNING TONIGHT...

.TODAY...SW wind 20 kt becoming SE 25 kt in the afternoon. Seas 6 
ft.
.TONIGHT...SE wind increasing to 35 kt. Seas 9 ft. Rain.
.WED...SE wind 30 kt. Seas 8 ft.
.WED NIGHT...S wind 25 kt. Seas 8 ft.
.THU...S wind 25 kt. Seas 8 ft.
.FRI...S wind 15 kt. Seas 6 ft.
.SAT...W wind 20 kt. Seas 6 ft.

$$

PKZ171-200115-
Unalaska Bay-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...SW wind 10 kt becoming S in the afternoon. Seas 2 ft.
.TONIGHT...SE wind increasing to 25 kt. Seas 4 ft. Rain.
.WED...SE wind 20 kt. Seas 3 ft.
.WED NIGHT...S wind 20 kt. Seas 2 ft.
.THU...S wind 20 kt. Seas 3 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-200115-
Cape Sarichef to Nikolski Pacific Side-
347 AM AKDT Tue May 19 2020

...GALE WARNING TONIGHT...

.TODAY...SW wind 25 kt. Seas 14 ft.
.TONIGHT...SE wind increasing to 35 kt. Seas 14 ft. Rain.
.WED...S wind 25 kt. Seas 15 ft.
.WED NIGHT...S wind 25 kt. Seas 14 ft.
.THU...S wind 30 kt. Seas 16 ft.
.FRI...SW wind 20 kt. Seas 13 ft.
.SAT...W wind 20 kt. Seas 9 ft.

$$

PKZ173-200115-
Nikolski to Seguam Island Bering Side-
347 AM AKDT Tue May 19 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 20 kt becoming SE 35 kt in the afternoon. Seas 9 ft.
Rain.
.TONIGHT...SE wind 35 kt becoming S 20 kt after midnight. Seas 12 
ft. Rain.
.WED...S wind 30 kt. Seas 11 ft.
.WED NIGHT...S wind 25 kt. Seas 11 ft.
.THU...SW wind 25 kt. Seas 9 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 8 ft.

$$

PKZ174-200115-
Nikolski to Seguam Island Pacific Side-
347 AM AKDT Tue May 19 2020

...GALE WARNING THROUGH TONIGHT...

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

$$

PKZ175-200115-
Seguam Island to Adak Bering Side-
347 AM AKDT Tue May 19 2020

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt. Seas 9 ft. Rain.
.TONIGHT...S wind 30 kt becoming SE 20 kt after midnight. Seas
10 ft. Rain.
.WED...SE wind 25 kt. Seas 7 ft. Rain showers.
.WED NIGHT...SW wind 25 kt. Seas 8 ft.
.THU...W wind 20 kt. Seas 7 ft.
.FRI...W wind 25 kt. Seas 9 ft.
.SAT...W wind 20 kt. Seas 8 ft.

$$

PKZ176-200115-
Seguam Island to Adak Pacific Side-
347 AM AKDT Tue May 19 2020

...GALE WARNING TODAY...

.TODAY...S wind 40 kt. Seas 14 ft. Rain.
.TONIGHT...S wind 30 kt. Seas 15 ft. Rain showers.
.WED...SW wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 25 kt. Seas 17 ft.
.THU THROUGH FRI...W wind 25 kt. Seas 13 ft.
.SAT...W wind 25 kt. Seas 9 ft.

$$

PKZ177-200115-
Adak to Kiska-
347 AM AKDT Tue May 19 2020

...GALE WARNING TODAY...

.TODAY...SE wind 40 kt becoming S 20 kt in the afternoon. Seas 13 
ft. Rain.
.TONIGHT...Variable wind 15 kt. Seas 13 ft.
.WED...Variable wind 15 kt. Seas 14 ft.
.WED NIGHT...NW wind 15 kt. Seas 12 ft.
.THU THROUGH FRI...W wind 30 kt. Seas 11 ft.
.SAT...W wind 25 kt. Seas 8 ft.

$$

PKZ178-200115-
Kiska to Attu-
347 AM AKDT Tue May 19 2020

...GALE WARNING TODAY AND WEDNESDAY...

.TODAY...E wind 35 kt. Seas 13 ft. Rain showers.
.TONIGHT...Variable wind 10 kt except NE 30 kt W of Shemya. Seas 13 
ft.
.WED...Variable wind 10 kt except N 35 kt W of Shemya. Seas 15 ft. 
Rain showers.
.WED NIGHT...N wind 30 kt. Seas 15 ft.
.THU...NW wind 30 kt. Seas 14 ft.
.FRI...W wind 25 kt. Seas 12 ft.
.SAT...W wind 20 kt. Seas 6 ft.

$$

PKZ179-200115-
Pribilof Islands Near Shore Waters-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY TONIGHT AND WEDNESDAY...

.TODAY...Variable wind 10 kt. Seas 6 ft. Areas of fog.
.TONIGHT...SE wind 15 kt increasing to 30 kt after midnight. Seas 8 
ft. Areas of fog. Rain showers.
.WED...SE wind 30 kt diminishing to 15 kt in the afternoon. Seas 10 
ft. Areas of fog.
.WED NIGHT...SE wind 20 kt. Seas 9 ft.
.THU...SE wind 20 kt. Seas 8 ft.
.FRI THROUGH SAT...N wind 15 kt. Seas 5 ft.

$$

PKZ180-200115-
Kuskokwim Delta and Etolin Strait-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...W wind 15 kt. Seas 4 ft.
.TONIGHT...SW wind 15 kt becoming SE after midnight. Seas 4 ft.
.WED...SE wind 30 kt. Seas 8 ft. Rain showers.
.WED NIGHT...SE wind 30 kt. Seas 9 ft.
.THU...SE wind 25 kt. Seas 7 ft.
.FRI...E wind 20 kt. Seas 6 ft.
.SAT...E wind 15 kt. Seas 4 ft.

$$

PKZ181-200115-
North and West of Nunivak Island-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...N wind 20 kt becoming variable 15 kt in the afternoon. Seas
3 ft.
.TONIGHT...Variable wind 10 kt becoming SE 15 kt after midnight.
Seas 2 ft.
.WED...SE wind increasing to 25 kt. Seas 5 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 7 ft.
.THU THROUGH FRI...E wind 20 kt. Seas 5 ft.
.SAT...NE wind 15 kt. Seas 3 ft.

$$

PKZ185-200115-
Saint Matthew Island Waters-
347 AM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...N wind 20 kt E of Saint Matthew Island...NE 25 kt W of
Saint Matthew Island. Seas 7 ft.
.TONIGHT...E wind 20 kt E of Saint Matthew Island...NE 30 kt W of
Saint Matthew Island. Seas 7 ft.
.WED...E wind 30 kt. Seas 10 ft. Rain showers.
.WED NIGHT...E wind 30 kt. Seas 11 ft.
.THU...NE wind 30 kt. Seas 10 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT...N wind 15 kt. Seas 4 ft.

$$

577 
FZAK52 PAFC 192322
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
322 PM AKDT Tue May 19 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.

PKZ199-201215-
322 PM AKDT Tue May 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 974 mb low 250 nm south of Shemya moves to 120 nm north of Adak
at 983 mb by Thu afternoon.

$$

PKZ150-201215-
South of the AK Peninsula Sitkinak to Castle Cape-
322 PM AKDT Tue May 19 2020

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

.TONIGHT...W wind 20 kt. Seas 10 ft.
.WED...SE wind increasing to 25 kt. Seas 9 ft.
.WED NIGHT...SE wind 30 kt. Seas 11 ft. Rain.
.THU...S wind 25 kt. Seas 12 ft.
.THU NIGHT...S wind 15 kt. Seas 10 ft.
.FRI...SE wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 9 ft.

$$

PKZ155-201215-
South of the AK Peninsula Castle Cape to Cape Sarichef-
322 PM AKDT Tue May 19 2020

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

.TONIGHT...SW wind 20 kt becoming S 30 kt after midnight. From the
Shumagin Islands E, SW wind 20 kt. Seas 11 ft.
.WED...SE wind 30 kt. Seas 13 ft. Rain showers.
.WED NIGHT...S wind 20 kt. From the Shumagin Islands E, SE wind
30 kt becoming S 20 kt after midnight. Seas 13 ft.
.THU AND THU NIGHT...S wind 20 kt. Seas 12 ft.
.FRI...SE wind 20 kt. Seas 11 ft.
.SAT...S wind 15 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ160-201215-
Bristol Bay-
322 PM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 15 kt becoming S after midnight. Seas 4 ft.
.WED...SE wind increasing to 25 kt. Seas 5 ft.
.WED NIGHT...SE wind 30 kt. Seas 7 ft. Rain.
.THU...SE wind 30 kt. Seas 6 ft.
.THU NIGHT...SE wind 20 kt. Seas 4 ft.
.FRI...E wind 25 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SUN...SE wind 10 kt. Seas 3 ft.

$$

PKZ165-201215-
Port Heiden to Cape Sarichef-
322 PM AKDT Tue May 19 2020

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

.TONIGHT...S wind 20 kt becoming SE 30 kt after midnight. From
Port Moller E, SE wind 20 kt. Seas 5 ft.
.WED...SE wind 30 kt. Seas 7 ft.
.WED NIGHT...SE wind 30 kt. Seas 6 ft.
.THU...S wind 25 kt. Seas 5 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...SE wind 25 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 4 ft.
.SUN...S wind 15 kt. Seas 3 ft.

$$

PKZ170-201215-
Cape Sarichef to Nikolski Bering Side-
322 PM AKDT Tue May 19 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 8 ft. Rain.
.WED...SE wind 30 kt. Seas 8 ft.
.WED NIGHT...S wind 25 kt. Seas 8 ft.
.THU AND THU NIGHT...S wind 25 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 5 ft.

$$

PKZ171-201215-
Unalaska Bay-
322 PM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind increasing to 25 kt. Seas 4 ft. Rain.
.WED...SE wind 20 kt. Seas 3 ft.
.WED NIGHT...S wind 20 kt. Seas 2 ft. Rain showers.
.THU...S wind 20 kt. Seas 3 ft.
.THU NIGHT...SE wind 15 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-201215-
Cape Sarichef to Nikolski Pacific Side-
322 PM AKDT Tue May 19 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 14 ft. Rain.
.WED...S wind 30 kt. Seas 14 ft.
.WED NIGHT...S wind 25 kt. Seas 15 ft. Rain showers.
.THU...S wind 30 kt. Seas 16 ft.
.THU NIGHT...S wind 25 kt. Seas 14 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 11 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ173-201215-
Nikolski to Seguam Island Bering Side-
322 PM AKDT Tue May 19 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt becoming S 20 kt after midnight. Seas 12 
ft. Rain.
.WED...SE wind 30 kt. Seas 11 ft.
.WED NIGHT...S wind 25 kt. Seas 12 ft.
.THU...SW wind 25 kt. Seas 9 ft.
.THU NIGHT...W wind 15 kt. Seas 7 ft.
.FRI THROUGH SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ174-201215-
Nikolski to Seguam Island Pacific Side-
322 PM AKDT Tue May 19 2020

...GALE WARNING TONIGHT...

.TONIGHT...S wind 40 kt diminishing to 30 kt after midnight. Seas
15 ft. Rain.
.WED...S wind 30 kt. Seas 16 ft. Rain showers.
.WED NIGHT...S wind 30 kt. Seas 17 ft. Rain showers.
.THU...SW wind 30 kt. Seas 17 ft.
.THU NIGHT...SW wind 15 kt. Seas 13 ft.
.FRI...W wind 20 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.

$$

PKZ175-201215-
Seguam Island to Adak Bering Side-
322 PM AKDT Tue May 19 2020

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

.TONIGHT...S wind 30 kt becoming SE 20 kt after midnight. Seas
10 ft. Rain.
.WED...SE wind 25 kt becoming SW in the afternoon. Seas 8 ft. Rain
showers.
.WED NIGHT...SW wind 25 kt. Seas 8 ft.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...NW wind 20 kt. Seas 6 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ176-201215-
Seguam Island to Adak Pacific Side-
322 PM AKDT Tue May 19 2020

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

.TONIGHT...S wind 30 kt. Seas 15 ft. Rain showers.
.WED...S wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 25 kt. Seas 17 ft.
.THU...W wind 20 kt. Seas 14 ft.
.THU NIGHT...W wind 25 kt. Seas 12 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 6 ft.

$$

PKZ177-201215-
Adak to Kiska-
322 PM AKDT Tue May 19 2020

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

.TONIGHT...S wind 20 kt becoming variable 10 kt after midnight. Seas
13 ft.
.WED...NW wind 15 kt. Seas 14 ft.
.WED NIGHT...NW wind 15 kt. Seas 12 ft.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...NW wind 30 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 11 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 5 ft.

$$

PKZ178-201215-
Kiska to Attu-
322 PM AKDT Tue May 19 2020

...GALE WARNING WEDNESDAY...

.TONIGHT...Variable wind 10 kt except NE 30 kt from Shemya W. Seas
13 ft.
.WED...Variable wind 10 kt except N 35 kt from Shemya W. Seas 15
ft. Rain showers.
.WED NIGHT...N wind 30 kt. Seas 15 ft.
.THU AND THU NIGHT...NW wind 30 kt. Seas 14 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 6 ft.

$$

PKZ179-201215-
Pribilof Islands Near Shore Waters-
322 PM AKDT Tue May 19 2020

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

.TONIGHT...SE wind 20 kt becoming E 30 kt after midnight. Seas 8
ft. Rain.
.WED...SE wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft.
.WED NIGHT...SE wind 20 kt. Seas 8 ft. Patchy fog.
.THU...SE wind 20 kt. Seas 9 ft.
.THU NIGHT...E wind 15 kt. Seas 6 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.

$$

PKZ180-201215-
Kuskokwim Delta and Etolin Strait-
322 PM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 15 kt becoming SE after midnight. Seas 4 ft.
.WED...SE wind 30 kt. Seas 7 ft. Rain showers.
.WED NIGHT...SE wind 30 kt. Seas 9 ft. Rain showers.
.THU...SE wind 25 kt. Seas 7 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...E wind 20 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SUN...E wind 10 kt. Seas 3 ft.

$$

PKZ181-201215-
North and West of Nunivak Island-
322 PM AKDT Tue May 19 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming SE 15 kt after midnight.
Seas 3 ft.
.WED...SE wind 25 kt. Seas 5 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 7 ft. Rain showers.
.THU...SE wind 20 kt. Seas 5 ft.
.THU NIGHT...SE wind 15 kt. Seas 4 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ185-201215-
Saint Matthew Island Waters-
322 PM AKDT Tue May 19 2020

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...E wind 20 kt E of Saint Matthew Island...NE 30 kt W of
Saint Matthew Island. Seas 7 ft.
.WED...E wind 30 kt. Seas 10 ft. Rain showers.
.WED NIGHT...E wind 25 kt E of Saint Matthew Island... NE 35 kt W
of Saint Matthew Island. Seas 11 ft. Rain.
.THU...E wind 30 kt. Seas 10 ft.
.THU NIGHT...E wind 25 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...N wind 20 kt. Seas 4 ft.

$$

945 
FZAK52 PAFC 201142
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
342 AM AKDT Wed May 20 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.

PKZ199-210030-
342 AM AKDT Wed May 20 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 974 mb low 250 nm south of Shemya moves to 120 nm north of Adak
at 983 mb by Thu afternoon.

$$

PKZ150-210030-
South of the AK Peninsula Sitkinak to Castle Cape-
342 AM AKDT Wed May 20 2020

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

.TONIGHT...W wind 20 kt. Seas 10 ft.
.WED...SE wind increasing to 25 kt. Seas 9 ft.
.WED NIGHT...SE wind 30 kt. Seas 11 ft. Rain.
.THU...S wind 25 kt. Seas 12 ft.
.THU NIGHT...S wind 15 kt. Seas 10 ft.
.FRI...SE wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 9 ft.

$$

PKZ155-210030-
South of the AK Peninsula Castle Cape to Cape Sarichef-
342 AM AKDT Wed May 20 2020

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

.TONIGHT...SW wind 20 kt becoming S 30 kt after midnight. From the
Shumagin Islands E, SW wind 20 kt. Seas 11 ft.
.WED...SE wind 30 kt. Seas 13 ft. Rain showers.
.WED NIGHT...S wind 20 kt. From the Shumagin Islands E, SE wind
30 kt becoming S 20 kt after midnight. Seas 13 ft.
.THU AND THU NIGHT...S wind 20 kt. Seas 12 ft.
.FRI...SE wind 20 kt. Seas 11 ft.
.SAT...S wind 15 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ160-210030-
Bristol Bay-
342 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 15 kt becoming S after midnight. Seas 4 ft.
.WED...SE wind increasing to 25 kt. Seas 5 ft.
.WED NIGHT...SE wind 30 kt. Seas 7 ft. Rain.
.THU...SE wind 30 kt. Seas 6 ft.
.THU NIGHT...SE wind 20 kt. Seas 4 ft.
.FRI...E wind 25 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SUN...SE wind 10 kt. Seas 3 ft.

$$

PKZ165-210030-
Port Heiden to Cape Sarichef-
342 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 20 kt becoming SE 30 kt after midnight. From
Port Moller E, SE wind 20 kt. Seas 5 ft.
.WED...SE wind 30 kt. Seas 7 ft.
.WED NIGHT...SE wind 30 kt. Seas 6 ft.
.THU...S wind 25 kt. Seas 5 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...SE wind 25 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 4 ft.
.SUN...S wind 15 kt. Seas 3 ft.

$$

PKZ170-210030-
Cape Sarichef to Nikolski Bering Side-
342 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 8 ft. Rain.
.WED...SE wind 30 kt. Seas 8 ft.
.WED NIGHT...S wind 25 kt. Seas 8 ft.
.THU AND THU NIGHT...S wind 25 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 5 ft.

$$

PKZ171-210030-
Unalaska Bay-
342 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind increasing to 25 kt. Seas 4 ft. Rain.
.WED...SE wind 20 kt. Seas 3 ft.
.WED NIGHT...S wind 20 kt. Seas 2 ft. Rain showers.
.THU...S wind 20 kt. Seas 3 ft.
.THU NIGHT...SE wind 15 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-210030-
Cape Sarichef to Nikolski Pacific Side-
342 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 14 ft. Rain.
.WED...S wind 30 kt. Seas 14 ft.
.WED NIGHT...S wind 25 kt. Seas 15 ft. Rain showers.
.THU...S wind 30 kt. Seas 16 ft.
.THU NIGHT...S wind 25 kt. Seas 14 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 11 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ173-210030-
Nikolski to Seguam Island Bering Side-
342 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt becoming S 20 kt after midnight. Seas 12 
ft. Rain.
.WED...SE wind 30 kt. Seas 11 ft.
.WED NIGHT...S wind 25 kt. Seas 12 ft.
.THU...SW wind 25 kt. Seas 9 ft.
.THU NIGHT...W wind 15 kt. Seas 7 ft.
.FRI THROUGH SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ174-210030-
Nikolski to Seguam Island Pacific Side-
342 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...S wind 40 kt diminishing to 30 kt after midnight. Seas
15 ft. Rain.
.WED...S wind 30 kt. Seas 16 ft. Rain showers.
.WED NIGHT...S wind 30 kt. Seas 17 ft. Rain showers.
.THU...SW wind 30 kt. Seas 17 ft.
.THU NIGHT...SW wind 15 kt. Seas 13 ft.
.FRI...W wind 20 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.

$$

PKZ175-210030-
Seguam Island to Adak Bering Side-
342 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 30 kt becoming SE 20 kt after midnight. Seas
10 ft. Rain.
.WED...SE wind 25 kt becoming SW in the afternoon. Seas 8 ft. Rain
showers.
.WED NIGHT...SW wind 25 kt. Seas 8 ft.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...NW wind 20 kt. Seas 6 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ176-210030-
Seguam Island to Adak Pacific Side-
342 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 30 kt. Seas 15 ft. Rain showers.
.WED...S wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 25 kt. Seas 17 ft.
.THU...W wind 20 kt. Seas 14 ft.
.THU NIGHT...W wind 25 kt. Seas 12 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 6 ft.

$$

PKZ177-210030-
Adak to Kiska-
342 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 20 kt becoming variable 10 kt after midnight. Seas
13 ft.
.WED...NW wind 15 kt. Seas 14 ft.
.WED NIGHT...NW wind 15 kt. Seas 12 ft.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...NW wind 30 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 11 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 5 ft.

$$

PKZ178-210030-
Kiska to Attu-
342 AM AKDT Wed May 20 2020

...GALE WARNING WEDNESDAY...

.TONIGHT...Variable wind 10 kt except NE 30 kt from Shemya W. Seas
13 ft.
.WED...Variable wind 10 kt except N 35 kt from Shemya W. Seas 15
ft. Rain showers.
.WED NIGHT...N wind 30 kt. Seas 15 ft.
.THU AND THU NIGHT...NW wind 30 kt. Seas 14 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 6 ft.

$$

PKZ179-210030-
Pribilof Islands Near Shore Waters-
342 AM AKDT Wed May 20 2020

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

.TONIGHT...SE wind 20 kt becoming E 30 kt after midnight. Seas 8
ft. Rain.
.WED...SE wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft.
.WED NIGHT...SE wind 20 kt. Seas 8 ft. Patchy fog.
.THU...SE wind 20 kt. Seas 9 ft.
.THU NIGHT...E wind 15 kt. Seas 6 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.

$$

PKZ180-210030-
Kuskokwim Delta and Etolin Strait-
342 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 15 kt becoming SE after midnight. Seas 4 ft.
.WED...SE wind 30 kt. Seas 7 ft. Rain showers.
.WED NIGHT...SE wind 30 kt. Seas 9 ft. Rain showers.
.THU...SE wind 25 kt. Seas 7 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...E wind 20 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SUN...E wind 10 kt. Seas 3 ft.

$$

PKZ181-210030-
North and West of Nunivak Island-
342 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming SE 15 kt after midnight.
Seas 3 ft.
.WED...SE wind 25 kt. Seas 5 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 7 ft. Rain showers.
.THU...SE wind 20 kt. Seas 5 ft.
.THU NIGHT...SE wind 15 kt. Seas 4 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ185-210030-
Saint Matthew Island Waters-
342 AM AKDT Wed May 20 2020

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...E wind 20 kt E of Saint Matthew Island...NE 30 kt W of
Saint Matthew Island. Seas 7 ft.
.WED...E wind 30 kt. Seas 10 ft. Rain showers.
.WED NIGHT...E wind 25 kt E of Saint Matthew Island... NE 35 kt W
of Saint Matthew Island. Seas 11 ft. Rain.
.THU...E wind 30 kt. Seas 10 ft.
.THU NIGHT...E wind 25 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...N wind 20 kt. Seas 4 ft.

$$

150 
FZAK52 PAFC 201147
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
347 AM AKDT Wed May 20 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.

PKZ199-210100-
347 AM AKDT Wed May 20 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 974 mb low 150 nm southwest of Adak moves to 120 nm north of Adak 
at 983 mb by Thu afternoon.

$$

PKZ150-210100-
South of the AK Peninsula Sitkinak to Castle Cape-
347 AM AKDT Wed May 20 2020

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

.TONIGHT...W wind 20 kt. Seas 10 ft.
.WED...SE wind increasing to 25 kt. Seas 9 ft.
.WED NIGHT...SE wind 30 kt. Seas 11 ft. Rain.
.THU...S wind 25 kt. Seas 12 ft.
.THU NIGHT...S wind 15 kt. Seas 10 ft.
.FRI...SE wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 9 ft.

$$

PKZ155-210100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
347 AM AKDT Wed May 20 2020

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

.TONIGHT...SW wind 20 kt becoming S 30 kt after midnight. From the
Shumagin Islands E, SW wind 20 kt. Seas 11 ft.
.WED...SE wind 30 kt. Seas 13 ft. Rain showers.
.WED NIGHT...S wind 20 kt. From the Shumagin Islands E, SE wind
30 kt becoming S 20 kt after midnight. Seas 13 ft.
.THU AND THU NIGHT...S wind 20 kt. Seas 12 ft.
.FRI...SE wind 20 kt. Seas 11 ft.
.SAT...S wind 15 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ160-210100-
Bristol Bay-
347 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 15 kt becoming S after midnight. Seas 4 ft.
.WED...SE wind increasing to 25 kt. Seas 5 ft.
.WED NIGHT...SE wind 30 kt. Seas 7 ft. Rain.
.THU...SE wind 30 kt. Seas 6 ft.
.THU NIGHT...SE wind 20 kt. Seas 4 ft.
.FRI...E wind 25 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SUN...SE wind 10 kt. Seas 3 ft.

$$

PKZ165-210100-
Port Heiden to Cape Sarichef-
347 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 20 kt becoming SE 30 kt after midnight. From
Port Moller E, SE wind 20 kt. Seas 5 ft.
.WED...SE wind 30 kt. Seas 7 ft.
.WED NIGHT...SE wind 30 kt. Seas 6 ft.
.THU...S wind 25 kt. Seas 5 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...SE wind 25 kt. Seas 5 ft.
.SAT...SE wind 20 kt. Seas 4 ft.
.SUN...S wind 15 kt. Seas 3 ft.

$$

PKZ170-210100-
Cape Sarichef to Nikolski Bering Side-
347 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 8 ft. Rain.
.WED...SE wind 30 kt. Seas 8 ft.
.WED NIGHT...S wind 25 kt. Seas 8 ft.
.THU AND THU NIGHT...S wind 25 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 5 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 5 ft.

$$

PKZ171-210100-
Unalaska Bay-
347 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind increasing to 25 kt. Seas 4 ft. Rain.
.WED...SE wind 20 kt. Seas 3 ft.
.WED NIGHT...S wind 20 kt. Seas 2 ft. Rain showers.
.THU...S wind 20 kt. Seas 3 ft.
.THU NIGHT...SE wind 15 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-210100-
Cape Sarichef to Nikolski Pacific Side-
347 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 14 ft. Rain.
.WED...S wind 30 kt. Seas 14 ft.
.WED NIGHT...S wind 25 kt. Seas 15 ft. Rain showers.
.THU...S wind 30 kt. Seas 16 ft.
.THU NIGHT...S wind 25 kt. Seas 14 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 11 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ173-210100-
Nikolski to Seguam Island Bering Side-
347 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt becoming S 20 kt after midnight. Seas 12 
ft. Rain.
.WED...SE wind 30 kt. Seas 11 ft.
.WED NIGHT...S wind 25 kt. Seas 12 ft.
.THU...SW wind 25 kt. Seas 9 ft.
.THU NIGHT...W wind 15 kt. Seas 7 ft.
.FRI THROUGH SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ174-210100-
Nikolski to Seguam Island Pacific Side-
347 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...S wind 40 kt diminishing to 30 kt after midnight. Seas
15 ft. Rain.
.WED...S wind 30 kt. Seas 16 ft. Rain showers.
.WED NIGHT...S wind 30 kt. Seas 17 ft. Rain showers.
.THU...SW wind 30 kt. Seas 17 ft.
.THU NIGHT...SW wind 15 kt. Seas 13 ft.
.FRI...W wind 20 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.

$$

PKZ175-210100-
Seguam Island to Adak Bering Side-
347 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 30 kt becoming SE 20 kt after midnight. Seas
10 ft. Rain.
.WED...SE wind 25 kt becoming SW in the afternoon. Seas 8 ft. Rain
showers.
.WED NIGHT...SW wind 25 kt. Seas 8 ft.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...NW wind 20 kt. Seas 6 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ176-210100-
Seguam Island to Adak Pacific Side-
347 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 30 kt. Seas 15 ft. Rain showers.
.WED...S wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 25 kt. Seas 17 ft.
.THU...W wind 20 kt. Seas 14 ft.
.THU NIGHT...W wind 25 kt. Seas 12 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 6 ft.

$$

PKZ177-210100-
Adak to Kiska-
347 AM AKDT Wed May 20 2020

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

.TONIGHT...S wind 20 kt becoming variable 10 kt after midnight. Seas
13 ft.
.WED...NW wind 15 kt. Seas 14 ft.
.WED NIGHT...NW wind 15 kt. Seas 12 ft.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...NW wind 30 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 11 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 5 ft.

$$

PKZ178-210100-
Kiska to Attu-
347 AM AKDT Wed May 20 2020

...GALE WARNING WEDNESDAY...

.TONIGHT...Variable wind 10 kt except NE 30 kt from Shemya W. Seas
13 ft.
.WED...Variable wind 10 kt except N 35 kt from Shemya W. Seas 15
ft. Rain showers.
.WED NIGHT...N wind 30 kt. Seas 15 ft.
.THU AND THU NIGHT...NW wind 30 kt. Seas 14 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 6 ft.

$$

PKZ179-210100-
Pribilof Islands Near Shore Waters-
347 AM AKDT Wed May 20 2020

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

.TONIGHT...SE wind 20 kt becoming E 30 kt after midnight. Seas 8
ft. Rain.
.WED...SE wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft.
.WED NIGHT...SE wind 20 kt. Seas 8 ft. Patchy fog.
.THU...SE wind 20 kt. Seas 9 ft.
.THU NIGHT...E wind 15 kt. Seas 6 ft.
.FRI...NE wind 20 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.

$$

PKZ180-210100-
Kuskokwim Delta and Etolin Strait-
347 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 15 kt becoming SE after midnight. Seas 4 ft.
.WED...SE wind 30 kt. Seas 7 ft. Rain showers.
.WED NIGHT...SE wind 30 kt. Seas 9 ft. Rain showers.
.THU...SE wind 25 kt. Seas 7 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...E wind 20 kt. Seas 5 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SUN...E wind 10 kt. Seas 3 ft.

$$

PKZ181-210100-
North and West of Nunivak Island-
347 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming SE 15 kt after midnight.
Seas 3 ft.
.WED...SE wind 25 kt. Seas 5 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 7 ft. Rain showers.
.THU...SE wind 20 kt. Seas 5 ft.
.THU NIGHT...SE wind 15 kt. Seas 4 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ185-210100-
Saint Matthew Island Waters-
347 AM AKDT Wed May 20 2020

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...E wind 20 kt E of Saint Matthew Island...NE 30 kt W of
Saint Matthew Island. Seas 7 ft.
.WED...E wind 30 kt. Seas 10 ft. Rain showers.
.WED NIGHT...E wind 25 kt E of Saint Matthew Island... NE 35 kt W
of Saint Matthew Island. Seas 11 ft. Rain.
.THU...E wind 30 kt. Seas 10 ft.
.THU NIGHT...E wind 25 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...N wind 20 kt. Seas 4 ft.

$$

603 
FZAK52 PAFC 201719
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
919 AM AKDT Wed May 20 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.

PKZ199-210615-
919 AM AKDT Wed May 20 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 974 mb low 250 nm south of Shemya moves 120 nm north of Adak at
983 mb by Thu afternoon.

$$

PKZ150-210615-
South of the AK Peninsula Sitkinak to Castle Cape-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 25 kt. Seas 9 ft.
.TONIGHT...SE wind 30 kt. Seas 11 ft. Rain.
.THU...S wind 25 kt diminishing to 15 kt in the afternoon. Seas
12 ft.
.THU NIGHT...S wind 15 kt. Seas 10 ft.
.FRI...SE wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...S wind 15 kt. Seas 9 ft.

$$

PKZ155-210615-
South of the AK Peninsula Castle Cape to Cape Sarichef-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 13 ft. Rain.
.TONIGHT...S wind 20 kt. From the Shumagin Islands E, SE wind 30
kt
becoming S 20 kt after midnight. Seas 13 ft.
.THU...S wind 20 kt. Seas 12 ft.
.THU NIGHT...S wind 20 kt. Seas 12 ft.
.FRI...S wind 20 kt. Seas 11 ft.
.SAT...S wind 15 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 7 ft.

$$

PKZ160-210615-
Bristol Bay-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 25 kt. Seas 5 ft.
.TONIGHT...SE wind 30 kt. Seas 7 ft.
.THU...SE wind 30 kt diminishing to 20 kt in the afternoon. Seas
6 ft subsiding to 3 ft in the afternoon.
.THU NIGHT...SE wind 20 kt. Seas 4 ft.
.FRI...E wind 25 kt. Seas 5 ft.
.SAT THROUGH SUN...SE wind 15 kt. Seas 4 ft.

$$

PKZ165-210615-
Port Heiden to Cape Sarichef-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 7 ft.
.TONIGHT...SE wind 30 kt. Seas 6 ft.
.THU...S wind 25 kt. Seas 5 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...SE wind 25 kt. Seas 5 ft.
.SAT...Variable wind 10 kt. Seas 4 ft.
.SUN...S wind 15 kt. Seas 4 ft.

$$

PKZ170-210615-
Cape Sarichef to Nikolski Bering Side-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 8 ft.
.TONIGHT...S wind 25 kt. Seas 8 ft.
.THU...S wind 25 kt. Seas 8 ft.
.THU NIGHT...S wind 25 kt. Seas 7 ft.
.FRI THROUGH SUN...SW wind 20 kt. Seas 6 ft.

$$

PKZ171-210615-
Unalaska Bay-
919 AM AKDT Wed May 20 2020

.TODAY...SE wind 20 kt. Seas 3 ft.
.TONIGHT...S wind 20 kt. Seas 2 ft. Rain.
.THU...S wind 20 kt. Seas 3 ft. Rain showers.
.THU NIGHT...SE wind 15 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...SW wind 15 kt. Seas 2 ft.

$$

PKZ172-210615-
Cape Sarichef to Nikolski Pacific Side-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...S wind 30 kt. Seas 14 ft. Rain showers.
.TONIGHT...S wind 25 kt. Seas 15 ft.
.THU...S wind 30 kt. Seas 16 ft. Rain showers.
.THU NIGHT...S wind 25 kt. Seas 14 ft.
.FRI...SW wind 15 kt. Seas 12 ft.
.SAT...W wind 20 kt. Seas 9 ft.
.SUN...SW wind 25 kt. Seas 7 ft.

$$

PKZ173-210615-
Nikolski to Seguam Island Bering Side-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 11 ft. Rain.
.TONIGHT...S wind 25 kt. Seas 12 ft.
.THU...S wind 25 kt. Seas 9 ft.
.THU NIGHT...W wind 15 kt. Seas 7 ft.
.FRI THROUGH SUN...W wind 20 kt. Seas 8 ft.

$$

PKZ174-210615-
Nikolski to Seguam Island Pacific Side-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...S wind 30 kt. Seas 16 ft. Rain showers.
.TONIGHT...S wind 30 kt. Seas 17 ft.
.THU...SW wind 30 kt. Seas 17 ft. Rain showers.
.THU NIGHT...SW wind 15 kt. Seas 13 ft.
.FRI...W wind 20 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 9 ft.

$$

PKZ175-210615-
Seguam Island to Adak Bering Side-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SE wind 25 kt becoming SW in the afternoon. Seas 8 ft.
Rain
showers.
.TONIGHT...SW wind 25 kt. Seas 8 ft.
.THU...W wind 20 kt. Seas 7 ft.
.THU NIGHT...NW wind 20 kt. Seas 6 ft.
.FRI...NW wind 25 kt. Seas 9 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 8 ft.

$$

PKZ176-210615-
Seguam Island to Adak Pacific Side-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...S wind 30 kt. Seas 17 ft. Rain showers.
.TONIGHT...SW wind 25 kt. Seas 17 ft.
.THU...W wind 20 kt. Seas 14 ft.
.THU NIGHT...W wind 25 kt. Seas 12 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.SAT...W wind 20 kt. Seas 9 ft.
.SUN...W wind 25 kt. Seas 6 ft.

$$

PKZ177-210615-
Adak to Kiska-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 15 kt. Seas 14 ft.
.TONIGHT...NW wind 15 kt. Seas 12 ft.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...NW wind 30 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ178-210615-
Kiska to Attu-
919 AM AKDT Wed May 20 2020

...GALE WARNING TODAY...

.TODAY...Variable wind 10 kt except N 35 kt from Shemya W. Seas
15 ft. Rain showers.
.TONIGHT...N wind 30 kt. Seas 15 ft.
.THU...NW wind 30 kt. Seas 14 ft.
.THU NIGHT...NW wind 30 kt. Seas 13 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 20 kt. Seas 6 ft.

$$

PKZ179-210615-
Pribilof Islands Near Shore Waters-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt diminishing to 20 kt in the afternoon. Seas
10 ft. Patchy fog. Rain showers.
.TONIGHT...SE wind 20 kt. Seas 8 ft. Patchy fog.
.THU...SE wind 20 kt. Seas 9 ft. Patchy fog.
.THU NIGHT...E wind 15 kt. Seas 6 ft.
.FRI...NE wind 25 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.

$$

PKZ180-210615-
Kuskokwim Delta and Etolin Strait-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SE wind 30 kt. Seas 7 ft. Rain.
.TONIGHT...SE wind 30 kt. Seas 9 ft. Rain.
.THU...SE wind 25 kt. Seas 7 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI...E wind 25 kt. Seas 5 ft.
.SAT THROUGH SUN...E wind 15 kt. Seas 4 ft.

$$

PKZ181-210615-
North and West of Nunivak Island-
919 AM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...SE wind 25 kt. Seas 5 ft. Rain.
.TONIGHT...E wind 25 kt. Seas 7 ft. Rain.
.THU...E wind 20 kt. Seas 5 ft.
.THU NIGHT...SE wind 15 kt. Seas 4 ft.
.FRI...E wind 20 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ185-210615-
Saint Matthew Island Waters-
919 AM AKDT Wed May 20 2020

...GALE WARNING TONIGHT...

.TODAY...E wind 30 kt. Seas 10 ft. Rain.
.TONIGHT...E wind 25 kt E of Saint Matthew Island...NE 35 kt W of
Saint Matthew Island. Seas 11 ft. Rain and snow.
.THU...E wind 20 kt E of Saint Matthew Island...NE 30 kt W of
Saint
Matthew Island. Seas 10 ft.
.THU NIGHT...E wind 25 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...N wind 20 kt. Seas 5 ft.

$$

267 
FZAK52 PAFC 202337
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
337 PM AKDT Wed May 20 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.

PKZ199-211245-
337 PM AKDT Wed May 20 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 976 mb low 95 nm North of Adak moves to 45 nm East of Dutch Harbor
at 989 mb for Fri afternoon. Its front moves over the Aleutians and 
Bering then across the Alaska Peninsula through Fri afternoon.

$$

PKZ150-211245-
South of the AK Peninsula Sitkinak to Castle Cape-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...SE wind 30 kt. Seas 11 ft. Rain.
.THU...S wind 25 kt diminishing to 15 kt in the afternoon. 
Seas 12 ft.
.THU NIGHT...S wind 15 kt. Seas 10 ft.
.FRI...SE wind 25 kt. Seas 9 ft.
.FRI NIGHT...SE wind 20 kt. Seas 9 ft.
.SAT THROUGH MON...S wind 15 kt. Seas 8 ft.

$$

PKZ155-211245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...S wind 30 kt diminishing to 20 kt after midnight. 
Seas 13 ft.
.THU...S wind 20 kt. Seas 12 ft.
.THU NIGHT...S wind 20 kt. Seas 12 ft. Rain showers.
.FRI...SE wind 25 kt. Seas 11 ft.
.FRI NIGHT...S wind 15 kt. Seas 10 ft.
.SAT...S wind 15 kt. Seas 8 ft.
.SUN THROUGH MON...S wind 20 kt. Seas 7 ft.

$$

PKZ160-211245-
Bristol Bay-
337 PM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SE wind 30 kt. Seas 6 ft. Rain.
.THU...SE wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 6 ft subsiding to 3 ft in the afternoon.
.THU NIGHT...SE wind 15 kt. Seas 3 ft.
.FRI AND FRI NIGHT...E wind 20 kt. Seas 4 ft.
.SAT...E wind 20 kt. Seas 4 ft.
.SUN THROUGH MON...SE wind 15 kt. Seas 3 ft.

$$

PKZ165-211245-
Port Heiden to Cape Sarichef-
337 PM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 25 kt. Seas 6 ft.
.THU...S wind 20 kt. Seas 5 ft.
.THU NIGHT...SE wind 20 kt. Seas 5 ft.
.FRI AND FRI NIGHT...SE wind 25 kt. Seas 5 ft.
.SAT THROUGH MON...S wind 15 kt. Seas 4 ft.

$$

PKZ170-211245-
Cape Sarichef to Nikolski Bering Side-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...S wind 25 kt. Seas 7 ft. Rain.
.THU...S wind 25 kt. Seas 8 ft. Rain showers.
.THU NIGHT...SE wind 25 kt. Seas 7 ft. Rain showers.
.FRI AND FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT THROUGH MON...SW wind 20 kt. Seas 6 ft.

$$

PKZ171-211245-
Unalaska Bay-
337 PM AKDT Wed May 20 2020

.TONIGHT...S wind 15 kt. Seas 2 ft. Rain.
.THU...S wind 20 kt. Seas 3 ft. Rain showers.
.THU NIGHT...SE wind 15 kt. Seas 2 ft. Rain showers.
.FRI...W wind 15 kt. Seas 3 ft.
.FRI NIGHT...SW wind 10 kt. Seas 2 ft.
.SAT THROUGH MON...S wind 15 kt. Seas 2 ft.

$$

PKZ172-211245-
Cape Sarichef to Nikolski Pacific Side-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...S wind 25 kt. Seas 15 ft. Rain.
.THU...S wind 25 kt. Seas 15 ft. Rain showers.
.THU NIGHT...S wind 20 kt. Seas 14 ft. Rain showers.
.FRI AND FRI NIGHT...SW wind 15 kt. Seas 10 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SUN...SW wind 25 kt. Seas 7 ft.
.MON...SW wind 20 kt. Seas 7 ft.

$$

PKZ173-211245-
Nikolski to Seguam Island Bering Side-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...S wind 25 kt. Seas 11 ft.
.THU...S wind 25 kt. Seas 9 ft. Rain.
.THU NIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...NW wind 15 kt. Seas 6 ft.
.FRI NIGHT...NW wind 20 kt. Seas 5 ft.
.SAT THROUGH MON...SW wind 20 kt. Seas 7 ft.

$$

PKZ174-211245-
Nikolski to Seguam Island Pacific Side-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...S wind 30 kt. Seas 17 ft. Rain.
.THU...S wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 17 ft. Rain.
.THU NIGHT...SW wind 15 kt. Seas 14 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 7 ft.

$$

PKZ175-211245-
Seguam Island to Adak Bering Side-
337 PM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SW wind 30 kt diminishing to 20 kt after midnight. 
Seas 10 ft.
.THU...SW wind 15 kt. Seas 6 ft.
.THU NIGHT...NW wind 20 kt. Seas 5 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 7 ft.
.SAT THROUGH MON...W wind 20 kt. Seas 7 ft.

$$

PKZ176-211245-
Seguam Island to Adak Pacific Side-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...SW wind 25 kt. Seas 18 ft.
.THU...W wind 20 kt. Seas 15 ft.
.THU NIGHT...W wind 20 kt. Seas 13 ft.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 9 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 7 ft.
.MON...W wind 20 kt. Seas 6 ft.

$$

PKZ177-211245-
Adak to Kiska-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...NW wind 20 kt. Seas 13 ft. Rain.
.THU...W wind 25 kt. Seas 11 ft.
.THU NIGHT...NW wind 25 kt. Seas 11 ft.
.FRI AND FRI NIGHT...NW wind 25 kt. Seas 9 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 6 ft.

$$

PKZ178-211245-
Kiska to Attu-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...Variable wind 10 kt becoming NW 20 kt after midnight.
From Shemya W, N wind 30 kt. Seas 14 ft.
.THU...NW wind 30 kt. Seas 14 ft.
.THU NIGHT...NW wind 25 kt. Seas 13 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.FRI NIGHT...NW wind 20 kt. Seas 8 ft.
.SAT THROUGH MON...W wind 20 kt. Seas 6 ft.

$$

PKZ179-211245-
Pribilof Islands Near Shore Waters-
337 PM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind 20 kt. Seas 9 ft. Areas of fog.
.THU...SE wind 15 kt. Seas 7 ft. Areas of fog.
.THU NIGHT...SE wind 15 kt. Seas 6 ft. Patchy fog.
.FRI...E wind 15 kt. Seas 6 ft.
.FRI NIGHT...NE wind 20 kt. Seas 6 ft.
.SAT...N wind 15 kt. Seas 5 ft.
.SUN...Variable wind 10 kt. Seas 3 ft.
.MON...Variable wind 10 kt. Seas 3 ft.

$$

PKZ180-211245-
Kuskokwim Delta and Etolin Strait-
337 PM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...SE wind 30 kt. Seas 8 ft. Areas of fog. Rain.
.THU...SE wind 25 kt. Seas 6 ft.
.THU NIGHT...SE wind 15 kt. Seas 6 ft.
.FRI AND FRI NIGHT...E wind 25 kt. Seas 6 ft.
.SAT...E wind 20 kt. Seas 5 ft.
.SUN...E wind 15 kt. Seas 3 ft.
.MON...SE wind 20 kt. Seas 3 ft.

$$

PKZ181-211245-
North and West of Nunivak Island-
337 PM AKDT Wed May 20 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...E wind 25 kt. Seas 7 ft. Areas of fog. Rain.
.THU...E wind 20 kt. Seas 6 ft. Areas of fog.
.THU NIGHT...SE wind 15 kt. Seas 4 ft.
.FRI AND FRI NIGHT...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH MON...E wind 15 kt. Seas 3 ft.

$$

PKZ185-211245-
Saint Matthew Island Waters-
337 PM AKDT Wed May 20 2020

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

.TONIGHT...E wind 25 kt E of Saint Matthew Island...NE 30 kt W of
Saint Matthew Island. Seas 11 ft. Areas of fog. Rain.
.THU...E wind 20 kt E of Saint Matthew Island...NE 30 kt W of
Saint Matthew Island. Seas 10 ft. Areas of fog. Rain.
.THU NIGHT...E wind 15 kt E of Saint Matthew Island... NE 25 kt W
of Saint Matthew Island. Seas 9 ft. Areas of fog. Snow.
.FRI...NE wind 20 kt. Seas 7 ft.
.FRI NIGHT...NE wind 15 kt. Seas 5 ft.
.SAT THROUGH MON...NE wind 20 kt. Seas 5 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion...CORRECTED
National Weather Service Anchorage AK
809 AM AKDT Mon May 18 2020

.ANALYSIS AND UPPER LEVELS...

An upper level jet near the western Aleutians is helping to
maintain an associated 500 mb low northeast of Adak. Although a
surface low is currently weakening as it is becoming vertically
stacked with the aforementioned upper low, it is still aiding in
widespread shower activity across the central and western
Aleutians. A well-defined cold front is tracking eastward across
the Alaska Peninsula, Bristol Bay and Kodiak Island. Given the
long southerly fetch between the broad upper low and a large ridge
over the Gulf, moderate to locally heavy rain and gusty southerly
winds are observed over this area. Water vapor shows this swath
of moisture originating from around 35N. While the crest of the
upper ridge ahead of this feature is flattening over Southcentral,
conditions remain quiet with partly clear skies over interior
regions. Skies remain overcast near the Gulf coast in weak onshore
flow.

&&

.MODEL DISCUSSION...

Synoptic features remain in good agreement through the end of the
week. There remains up to a half inch spread in total rainfall
amounts over portions of Bristol Bay and Kodiak Island as a cold
front tracks across the region through Tuesday. Model spreads are
even slightly higher over the Alaska Peninsula, with NAM being the
most aggressive, showing localized amounts of around 1.5 inches
between Port Heiden and Nelson Lagoon. The current forecast
generally reflects a model average, though the higher-end models
could easily verify (over non-downsloped areas) given the strong
southerly fetch aloft as indicated by the latest water vapor
imagery. In any case, there are no concerns of impacts from this
rainfall as the front will gradually weaken as it continues to track
eastward and forecast confidence remains steadfast.

&&

.AVIATION...

PANC...VFR conditions will persist. Light and variable winds will
continue through this morning. Southeasterly Turnagain Arm winds
are expected to develop this afternoon, with gusts near 20 kt
possible over the terminal. These will likely diminish by early
Tuesday morning.

&&

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

A weather front over Kodiak Island and the western Gulf this
morning will move northward today. This will bring increasing
winds to the area, especially along Turnagain Arm as well as the
Knik and Copper River Valleys. Rain with this front will push into
the Kenai Peninsula early this afternoon, and then across the
remainder of Southcentral later this afternoon through tonight.
Most of the rain will fall along the eastern Kenai Peninsula and
coastal locations, with just chances of rain for inland areas.
The front will weaken on Tuesday, with winds diminishing. Some
showers will continue on Tuesday. Showers will diminish Tuesday
night as the front dissipates.

&&

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

Upper level high pressure continues to shift eastward today. This
will allow for more clouds and moisture to move into the area from
southwesterly flow aloft. A negatively-tilted trough axis is
moving northeastward towards the AKPEN. The orientation of this
trough axis is conducive to cyclogenesis (favorable for low
pressure systems to develop and strengthen). There is good
agreement that an area of low pressure will develop along the
AKPEN this morning and move northeastward into Bristol Bay this
afternoon. Widespread rain and showers are expected today along
the AKPEN and in Bristol Bay as the low moves through. The highest
rainfall amounts will be along the AKPEN and Bristol Bay. Sunshine
will increase on Wednesday as a second upper level ridge moves
over the area. However, conditions will remain humid as guidance
indicates relatively small dewpoint depressions.

&&

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

A large area of low pressure over the western Aleutians will
continue to weaken while moving eastward today bringing widespread
showers.

A second low is currently developing east of the Kurill Islands
while moving northeastward. The center of cyclonic vorticity
maxima (area with the strongest counterclockwise rotation) is
located near the jet-core inside of the left-exit region of the
subtropical jet stream. This will provide ample synoptic scale
forcing for this low to continue strengthening as it approaches
the western Bering/Aleutians. This low will bring gale force
southerly winds to the central Aleutians Tuesday afternoon and
evening. The low will begin to weaken Tuesday night, thus winds
will begin to gradually ease. Widespread rain and showers will
move over the Aleutians Tuesday morning and continue through
Wednesday night. The rain is expected to begin in the Pribilof
Islands Tuesday night into Wednesday morning and continue through
Wednesday night.

Fog is expected to continue across the Pribilof Islands through
Wednesday and may be dense at times. Guidance shows little to no
dewpoint depression, thus there is a high probability for
condensation to occur at the surface.

Large long period swell will build across the western
Bering/Aleutians Tuesday and Wednesday. The largest swell will
occur on the Pacific side of the western and central Aleutians.

&&

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

A weak area of low pressure in the Gulf Tuesday looks to dissipate
by Wednesday night. Winds and waves may be a bit higher,
although, nothing significant to note. A front associated with a
low over the central Aleutians will enter the western Gulf
Wednesday afternoon, bringing small craft winds and waves across
the Barren islands through Thursday.

A strengthening low across the Aleutians will bring gale force
winds and waves across the central Aleutians and the western and
central Bering Tuesday. Expect these to propagate north and east
as the low moves towards the southwest coast before dissipating
Thursday.

&&

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

Widespread rain across the Bering, Aleutian Chain and the
southwest coast will continue on Thursday as a very large complex
low remains over the Aleutians. This moisture will move into
Southcentral, however, forecast timing on this is currently a
challenge. The challenge remains with timing of the complex low
splitting into smaller lows and those smaller lows propagating
into the Gulf.

All in all, expect cooler temperatures, chances for rain and
increased winds through the extended forecast period as this
pattern looks to continue through then.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale Warning: 173-176.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...AP
SOUTHCENTRAL ALASKA...BL
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...ED
MARINE/LONG TERM...CK