Gale Warning 698, NWS Anchorage, AK

217 
FZAK52 PAFC 281313
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
413 AM AKST Sat Nov 28 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.

PKZ199-290145-
413 AM AKST Sat Nov 28 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 967 mb low 160 nm SE of Sand Point Sat morning moves into the
Gulf Sat afternoon. A 987 mb low 225 nm N of Amchitka Sat morning
moves into the north Pacific Sun morning. A 961 mb low and front 
350 nm S of Shemya Sun morning moves to 325 nm S of Nikolski Mon
morning. 


$$

PKZ150-290145-
South of the AK Peninsula Sitkinak to Castle Cape-
413 AM AKST Sat Nov 28 2020

...GALE WARNING THROUGH SUNDAY...

.TODAY...N wind 30 kt becoming NW 40 kt in the afternoon. Seas
21 ft.
.TONIGHT...W wind 40 kt. Seas 19 ft.
.SUN...W wind 35 kt. Seas 15 ft.
.SUN NIGHT...S wind 35 kt. Seas 10 ft.
.MON...S wind 45 kt. Seas 17 ft.
.TUE...SW wind 25 kt. Seas 17 ft.
.WED...W wind 20 kt. Seas 13 ft.

$$

PKZ155-290145-
South of the AK Peninsula Castle Cape to Cape Sarichef-
413 AM AKST Sat Nov 28 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 40 kt diminishing to 30 kt in the afternoon. From
the Shumagin Islands E, NW wind 45 kt. Seas 21 ft.
.TONIGHT...W wind 35 kt. Seas 14 ft.
.SUN...W wind 25 kt becoming SW 15 kt in the afternoon. From the
Shumagin Islands E, W wind 30 kt. Seas 12 ft.
.SUN NIGHT...E wind 50 kt. Seas 13 ft.
.MON...NW wind 45 kt. Seas 19 ft.
.TUE...NW wind 30 kt. Seas 18 ft.
.WED...NW wind 20 kt. Seas 11 ft.

$$

PKZ160-290145-
Bristol Bay-
413 AM AKST Sat Nov 28 2020

...GALE WARNING THROUGH TONIGHT...
...HEAVY FREEZING SPRAY WARNING TONIGHT...

.TODAY...N wind 25 kt becoming NW 35 kt in the afternoon. Seas 5 ft 
building to 10 ft in the afternoon. Patchy fog and freezing fog. Snow.
.TONIGHT...NW wind 35 kt. Seas 11 ft. Heavy freezing spray near the
coast.
.SUN...NW wind 30 kt diminishing to 20 kt in the afternoon. Seas
9 ft. Freezing spray.
.SUN NIGHT...NE wind 25 kt. Seas 5 ft. Heavy freezing spray near the
coast.
.MON...NE wind 45 kt. Seas 11 ft. Heavy freezing spray near the
coast.
.TUE THROUGH WED...N wind 20 kt. Seas 5 ft.

$$

PKZ165-290145-
Port Heiden to Cape Sarichef-
413 AM AKST Sat Nov 28 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 35 kt. Seas 14 ft.
.TONIGHT...NW wind 35 kt. Seas 13 ft.
.SUN...NW wind 30 kt diminishing to 20 kt in the afternoon. Seas
12 ft.
.SUN NIGHT...NE wind 35 kt. Seas 9 ft.
.MON...NE wind 50 kt. Seas 18 ft.
.TUE...NW wind 35 kt. Seas 16 ft.
.WED...N wind 30 kt. Seas 13 ft.

$$

PKZ170-290145-
Cape Sarichef to Nikolski Bering Side-
413 AM AKST Sat Nov 28 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...NW wind 25 kt. Seas 15 ft.
.TONIGHT...NW wind 25 kt. Seas 13 ft.
.SUN...NW wind 15 kt becoming E 30 kt in the afternoon. Seas 11 ft.
.SUN NIGHT...NE wind 45 kt. Seas 14 ft.
.MON...N wind 50 kt. Seas 21 ft.
.TUE...N wind 40 kt. Seas 21 ft.
.WED...N wind 25 kt. Seas 12 ft.

$$

PKZ171-290145-
Unalaska Bay-
413 AM AKST Sat Nov 28 2020

.TODAY...NW wind 20 kt. Seas 7 ft. Rain showers and snow showers.
.TONIGHT...NW wind 20 kt. Seas 7 ft.
.SUN...W wind 10 kt becoming E 20 kt in the afternoon. Seas 3 ft.
Snow.
.SUN NIGHT...E wind 40 kt. Seas 11 ft.
.MON...N wind 40 kt. Seas 16 ft.
.TUE...N wind 35 kt. Seas 16 ft.
.WED...N wind 15 kt. Seas 5 ft.

$$

PKZ172-290145-
Cape Sarichef to Nikolski Pacific Side-
413 AM AKST Sat Nov 28 2020

...GALE WARNING TODAY AND SUNDAY...

.TODAY...NW wind 35 kt. Seas 18 ft.
.TONIGHT...NW wind 25 kt. Seas 13 ft.
.SUN...NE wind 20 kt becoming E 40 kt in the afternoon. Seas 10 ft. 
Snow and rain.
.SUN NIGHT...E wind 50 kt. Seas 16 ft.
.MON...N wind 40 kt. Seas 23 ft.
.TUE...NW wind 40 kt. Seas 17 ft.
.WED...N wind 20 kt. Seas 8 ft.

$$

PKZ173-290145-
Nikolski to Seguam Island Bering Side-
413 AM AKST Sat Nov 28 2020

...GALE WARNING SUNDAY...

.TODAY...W wind 30 kt. Seas 18 ft. Snow showers.
.TONIGHT...N wind 20 kt. Seas 14 ft.
.SUN...E wind 35 kt increasing to 45 kt in the afternoon. Seas
12 ft. Snow and rain.
.SUN NIGHT...NE wind 50 kt. Seas 19 ft.
.MON...N wind 50 kt. Seas 22 ft.
.TUE...N wind 35 kt. Seas 19 ft.
.WED...N wind 15 kt. Seas 10 ft.

$$

PKZ174-290145-
Nikolski to Seguam Island Pacific Side-
413 AM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY...

.TODAY...W wind 35 kt. Seas 19 ft. Snow showers.
.TONIGHT...NW wind 20 kt. Seas 16 ft.
.SUN...E wind 35 kt increasing to 50 kt in the afternoon. Seas 10 ft
building to 15 ft in the afternoon. Rain and snow.
.SUN NIGHT...NE wind 50 kt. Seas 22 ft.
.MON...N wind 45 kt. Seas 29 ft.
.TUE...NW wind 35 kt. Seas 17 ft.
.WED...N wind 15 kt. Seas 7 ft.

$$

PKZ175-290145-
Seguam Island to Adak Bering Side-
413 AM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY...

.TODAY...W wind 45 kt. Seas 22 ft. Snow showers.
.TONIGHT...N wind 20 kt becoming E 30 kt after midnight. Seas 13 ft.
Snow.
.SUN...E wind 50 kt. Seas 11 ft building to 17 ft in the afternoon. 
Snow and rain.
.SUN NIGHT...NE wind 50 kt. Seas 19 ft.
.MON...N wind 40 kt. Seas 21 ft.
.TUE...N wind 25 kt. Seas 14 ft.
.WED...Variable wind 10 kt. Seas 9 ft.

$$

PKZ176-290145-
Seguam Island to Adak Pacific Side-
413 AM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY...

.TODAY...W wind 45 kt. Seas 20 ft.
.TONIGHT...NW wind 25 kt becoming E after midnight. Seas 17 ft
subsiding to 11 ft after midnight. Rain and snow.
.SUN...E wind 50 kt. Seas 14 ft building to 19 ft in the afternoon. Rain
and snow.
.SUN NIGHT...NE wind 55 kt. Seas 30 ft.
.MON...N wind 45 kt. Seas 29 ft.
.TUE...N wind 25 kt. Seas 13 ft.
.WED...Variable wind 10 kt. Seas 7 ft.

$$

PKZ177-290145-
Adak to Kiska-
413 AM AKST Sat Nov 28 2020

...STORM WARNING TONIGHT AND SUNDAY...

.TODAY...W wind 45 kt. Seas 21 ft.
.TONIGHT...E wind 25 kt increasing to 50 kt after midnight. Seas
12 ft. Rain and snow.
.SUN...E wind 50 kt. Seas 21 ft. Rain and snow.
.SUN NIGHT...NE wind 55 kt. Seas 27 ft.
.MON...N wind 35 kt. Seas 19 ft.
.TUE THROUGH WED...Variable wind 10 kt. Seas 10 ft.

$$

PKZ178-290145-
Kiska to Attu-
413 AM AKST Sat Nov 28 2020

...STORM WARNING TONIGHT AND SUNDAY...

.TODAY...NW wind 35 kt becoming N 15 kt in the afternoon. Seas
16 ft.
.TONIGHT...E wind 35 kt increasing to 50 kt after midnight. Seas
10 ft building to 15 ft after midnight. Rain and snow.
.SUN...NE wind 50 kt. Seas 22 ft. Rain and snow.
.SUN NIGHT...N wind 35 kt. Seas 22 ft.
.MON...N wind 20 kt. Seas 13 ft.
.TUE...S wind 15 kt. Seas 8 ft.
.WED...Variable wind 10 kt. Seas 9 ft.

$$

PKZ179-290145-
Pribilof Islands Near Shore Waters-
413 AM AKST Sat Nov 28 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...NW wind 25 kt. Seas 12 ft. Patchy fog.
.TONIGHT...NW wind 25 kt. Seas 11 ft.
.SUN...NE wind 20 kt. Seas 8 ft.
.SUN NIGHT...NE wind 35 kt. Seas 11 ft.
.MON...N wind 40 kt. Seas 17 ft.
.TUE...N wind 35 kt. Seas 16 ft.
.WED...N wind 20 kt. Seas 9 ft.

$$

PKZ180-290145-
Kuskokwim Delta and Etolin Strait-
413 AM AKST Sat Nov 28 2020

...GALE WARNING THROUGH TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH SUNDAY...

.TODAY...N wind 35 kt. Seas 10 ft. Heavy freezing spray near the
coast.
.TONIGHT...NW wind 35 kt. Seas 10 ft. Heavy freezing spray near the
coast.
.SUN...NW wind 25 kt. Seas 9 ft. Heavy freezing spray near the
coast.
.SUN NIGHT...NE wind 30 kt. Seas 6 ft. Heavy freezing spray near the
coast.
.MON...N wind 45 kt. Seas 12 ft. Heavy freezing spray near the
coast.
.TUE...N wind 40 kt. Seas 12 ft. Heavy freezing spray near the
coast.
.WED...N wind 30 kt. Seas 10 ft.

$$

PKZ181-290145-
North and West of Nunivak Island-
413 AM AKST Sat Nov 28 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH SUNDAY...

.TODAY...N wind 25 kt. Seas 8 ft. Heavy freezing spray near the
coast. Snow showers.
.TONIGHT...NW wind 30 kt. Seas 10 ft. Heavy freezing spray near the
coast.
.SUN...N wind 30 kt. Seas 10 ft. Heavy freezing spray near the
coast.
.SUN NIGHT...NE wind 25 kt. Seas 8 ft. Heavy freezing spray near the
coast.
.MON THROUGH TUE...N wind 35 kt. Seas 12 ft. Heavy freezing spray near the
coast.
.WED...N wind 25 kt. Seas 9 ft.

$$

PKZ185-290145-
Saint Matthew Island Waters-
413 AM AKST Sat Nov 28 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...N wind 30 kt. Seas 10 ft.
.TONIGHT...N wind 30 kt. Seas 10 ft. Freezing spray.
.SUN...N wind 25 kt. Seas 9 ft. Freezing spray.
.SUN NIGHT...N wind 25 kt. Seas 7 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 9 ft.
.WED...N wind 20 kt. Seas 7 ft.

$$

830 
FZAK52 PAFC 290101
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
401 PM AKST Sat Nov 28 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.

PKZ199-291345-
401 PM AKST Sat Nov 28 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 998 mb low over Atka moves into the North Pacific and dissipates by Sun
morning. A 965 mb North Pacific low moves to 420 nm south of Cold 
Bay at 962 mb by Mon afternoon. Its front moves just over the 
Aleutians into the Alaska Peninsula through Mon afternoon. 

$$

PKZ150-291345-
South of the AK Peninsula Sitkinak to Castle Cape-
401 PM AKST Sat Nov 28 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...W wind 40 kt. Seas 19 ft.
.SUN...W wind 35 kt. Seas 16 ft.
.SUN NIGHT...SW wind 20 kt becoming SE 35 kt after midnight. Seas
10 ft. Rain and snow.
.MON...SE wind 45 kt. Seas 15 ft.
.MON NIGHT...S wind 25 kt. Seas 17 ft.
.TUE...SW wind 25 kt. Seas 17 ft.
.WED...W wind 20 kt. Seas 13 ft.
.THU...W wind 15 kt. Seas 10 ft.

$$

PKZ155-291345-
South of the AK Peninsula Castle Cape to Cape Sarichef-
401 PM AKST Sat Nov 28 2020

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 15 ft.
.SUN...W wind 25 kt becoming SW 15 kt in the afternoon. From the
Shumagin Islands E, W wind 30 kt. Seas 12 ft.
.SUN NIGHT...E wind 35 kt increasing to 45 kt after midnight. From
the Shumagin Islands E, S wind 20 kt becoming E 40 kt after
midnight. Seas 8 ft building to 13 ft after midnight. Rain and
snow showers.
.MON...NE wind 40 kt. Seas 14 ft.
.MON NIGHT...NW wind 30 kt. Seas 19 ft.
.TUE...NW wind 30 kt. Seas 17 ft.
.WED...NW wind 20 kt. Seas 11 ft.
.THU...NW wind 15 kt. Seas 8 ft.

$$

PKZ160-291345-
Bristol Bay-
401 PM AKST Sat Nov 28 2020

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND SUN NIGHT...

.TONIGHT...NW wind 35 kt. Seas 11 ft. Heavy freezing spray near the
coast. Snow showers.
.SUN...NW wind 30 kt diminishing to 20 kt in the afternoon. Seas
9 ft. Freezing spray.
.SUN NIGHT...N wind 10 kt becoming E 20 kt after midnight. Seas
5 ft. Heavy freezing spray near the coast and patchy freezing fog.
.MON AND MON NIGHT...N wind 40 kt. Seas 10 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 5 ft.
.THU...N wind 15 kt. Seas 4 ft.

$$

PKZ165-291345-
Port Heiden to Cape Sarichef-
401 PM AKST Sat Nov 28 2020

...GALE WARNING TONIGHT AND SUNDAY NIGHT...

.TONIGHT...NW wind 35 kt. Seas 13 ft. Snow showers.
.SUN...NW wind 30 kt diminishing to 20 kt in the afternoon. Seas
12 ft.
.SUN NIGHT...E wind 25 kt becoming NE 35 kt after midnight. From
Port Moller E, variable wind 10 kt becoming E 25 kt after
midnight. Seas 8 ft.
.MON...NE wind 45 kt. Seas 18 ft.
.MON NIGHT...N wind 40 kt. Seas 19 ft.
.TUE...N wind 35 kt. Seas 17 ft.
.WED...N wind 30 kt. Seas 13 ft.
.THU...N wind 20 kt. Seas 9 ft.

$$

PKZ170-291345-
Cape Sarichef to Nikolski Bering Side-
401 PM AKST Sat Nov 28 2020

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 12 ft.
.SUN...N wind 15 kt becoming E 30 kt in the afternoon. Seas 10 ft.
.SUN NIGHT...NE wind 45 kt. Seas 14 ft. Snow showers.
.MON...N wind 45 kt. Seas 21 ft.
.MON NIGHT...N wind 40 kt. Seas 22 ft.
.TUE...N wind 35 kt. Seas 20 ft.
.WED...N wind 25 kt. Seas 12 ft.
.THU...N wind 20 kt. Seas 9 ft.

$$

PKZ171-291345-
Unalaska Bay-
401 PM AKST Sat Nov 28 2020

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 7 ft.
.SUN...W wind 10 kt becoming E 20 kt in the afternoon. Seas 3 ft.
.SUN NIGHT...E wind 30 kt becoming NE 40 kt after midnight. Seas
5 ft building to 12 ft after midnight. Snow showers and rain
showers.
.MON...N wind 40 kt. Seas 16 ft.
.MON NIGHT...N wind 35 kt. Seas 16 ft.
.TUE...N wind 30 kt. Seas 16 ft.
.WED THROUGH THU...NW wind 15 kt. Seas 5 ft.

$$

PKZ172-291345-
Cape Sarichef to Nikolski Pacific Side-
401 PM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 13 ft.
.SUN...NE wind 20 kt becoming E 40 kt in the afternoon. Seas 10
ft. Snow and rain.
.SUN NIGHT...E wind 50 kt. Seas 16 ft. Rain and snow showers.
.MON...NE wind 45 kt. Seas 22 ft.
.MON NIGHT...N wind 40 kt. Seas 21 ft.
.TUE...NW wind 35 kt. Seas 15 ft.
.WED THROUGH THU...NW wind 20 kt. Seas 7 ft.

$$

PKZ173-291345-
Nikolski to Seguam Island Bering Side-
401 PM AKST Sat Nov 28 2020

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 14 ft.
.SUN...E wind 30 kt increasing to 45 kt in the afternoon. Seas
12 ft. Snow.
.SUN NIGHT...NE wind 45 kt. Seas 18 ft. Snow.
.MON...N wind 45 kt. Seas 22 ft.
.MON NIGHT...N wind 40 kt. Seas 22 ft.
.TUE...N wind 30 kt. Seas 17 ft.
.WED THROUGH THU...N wind 15 kt. Seas 9 ft.

$$

PKZ174-291345-
Nikolski to Seguam Island Pacific Side-
401 PM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...NW wind 25 kt becoming NE 15 kt after midnight. Seas
15 ft.
.SUN...E wind 30 kt increasing to 45 kt in the afternoon. Seas
14 ft. Rain and snow.
.SUN NIGHT...NE wind 50 kt. Seas 22 ft. Rain showers and snow
showers.
.MON...N wind 45 kt. Seas 28 ft.
.MON NIGHT...N wind 40 kt. Seas 24 ft.
.TUE...N wind 30 kt. Seas 15 ft.
.WED THROUGH THU...N wind 15 kt. Seas 7 ft.

$$

PKZ175-291345-
Seguam Island to Adak Bering Side-
401 PM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY NIGHT...

.TONIGHT...NE wind 20 kt becoming E 30 kt after midnight. Seas
13 ft.
.SUN...NE wind 45 kt. Seas 11 ft building to 16 ft in the
afternoon. Snow and rain.
.SUN NIGHT...NE wind 50 kt. Seas 19 ft. Snow showers.
.MON...N wind 40 kt. Seas 18 ft.
.MON NIGHT...N wind 30 kt. Seas 17 ft.
.TUE...N wind 20 kt. Seas 13 ft.
.WED THROUGH THU...Variable wind 10 kt. Seas 8 ft.

$$

PKZ176-291345-
Seguam Island to Adak Pacific Side-
401 PM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...NW wind 30 kt becoming E after midnight. Seas 16 ft
subsiding to 11 ft after midnight. Rain and snow.
.SUN...E wind 50 kt. Seas 13 ft building to 18 ft in the
afternoon. Snow and rain.
.SUN NIGHT...NE wind 50 kt. Seas 22 ft building to 28 ft after
midnight. Snow showers and rain showers.
.MON...N wind 40 kt. Seas 28 ft.
.MON NIGHT...N wind 35 kt. Seas 18 ft.
.TUE...N wind 20 kt. Seas 11 ft.
.WED THROUGH THU...Variable wind 10 kt. Seas 7 ft.

$$

PKZ177-291345-
Adak to Kiska-
401 PM AKST Sat Nov 28 2020

...STORM WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...E wind 25 kt increasing to 45 kt after midnight. Seas
12 ft. Snow and rain.
.SUN...E wind 50 kt. Seas 21 ft. Snow showers and rain showers.
.SUN NIGHT...NE wind 50 kt becoming N 40 kt after midnight. Seas
19 ft Bering side...28 ft Pac side.
.MON...N wind 30 kt. Seas 19 ft.
.MON NIGHT...N wind 20 kt. Seas 11 ft.
.TUE THROUGH THU...Variable wind 10 kt. Seas 8 ft.

$$

PKZ178-291345-
Kiska to Attu-
401 PM AKST Sat Nov 28 2020

...STORM WARNING THROUGH SUNDAY...

.TONIGHT...Variable wind to 10 kt early then becoming E wind 35 kt 
and increasing to 50 kt after midnight. Seas 14 ft. Snow.
.SUN...NE wind 50 kt. Seas 22 ft. Rain showers.
.SUN NIGHT...N wind 30 kt diminishing to 20 kt after midnight. Seas 
21 ft.
.MON...NE wind 20 kt. Seas 12 ft.
.MON NIGHT...Variable wind 10 kt. Seas 9 ft.
.TUE...S wind 15 kt. Seas 8 ft.
.WED...Variable wind 10 kt. Seas 9 ft.
.THU...SW wind 15 kt. Seas 8 ft.

$$

PKZ179-291345-
Pribilof Islands Near Shore Waters-
401 PM AKST Sat Nov 28 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 11 ft.
.SUN...NE wind 20 kt. Seas 8 ft.
.SUN NIGHT...NE wind 30 kt. Seas 11 ft.
.MON AND MON NIGHT...N wind 40 kt. Seas 17 ft.
.TUE...N wind 30 kt. Seas 14 ft.
.WED THROUGH THU...N wind 20 kt. Seas 9 ft.

$$

PKZ180-291345-
Kuskokwim Delta and Etolin Strait-
401 PM AKST Sat Nov 28 2020

...HEAVY WARNING THROUGH SUNDAY NIGHT...
...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...NW wind 30 kt. Seas 10 ft. Heavy freezing spray near the
coast.
.SUN...NW wind 25 kt. Seas 9 ft. Heavy freezing spray near the coast.
.SUN NIGHT...N wind 20 kt becoming NE 30 kt after midnight. Seas
6 ft. Heavy freezing spray near the coast and patchy freezing fog.
.MON AND MON NIGHT...N wind 40 kt. Seas 12 ft. Heavy freezing spray
near the coast.
.TUE...N wind 40 kt. Seas 12 ft. Heavy freezing spray near the coast.
.WED...N wind 30 kt. Seas 10 ft.
.THU...N wind 25 kt. Seas 8 ft.

$$

PKZ181-291345-
North and West of Nunivak Island-
401 PM AKST Sat Nov 28 2020

...HEAVY WARNING THROUGH SUNDAY NIGHT...
...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...NW wind 30 kt. Seas 10 ft. Heavy freezing spray near the
coast.
.SUN...N wind 25 kt. Seas 10 ft. Heavy freezing spray near the coast.
.SUN NIGHT...N wind 25 kt. Seas 8 ft. Heavy freezing spray near the
coast and patchy freezing fog.
.MON AND MON NIGHT...N wind 30 kt. Seas 9 ft.
.TUE...N wind 30 kt. Seas 10 ft.
.WED...N wind 25 kt. Seas 9 ft.
.THU...N wind 20 kt. Seas 8 ft.

$$

PKZ185-291345-
Saint Matthew Island Waters-
401 PM AKST Sat Nov 28 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...N wind 30 kt. Seas 10 ft. Freezing spray.
.SUN...N wind 25 kt. Seas 9 ft. Freezing spray.
.SUN NIGHT...N wind 20 kt. Seas 7 ft. Freezing spray.
.MON AND MON NIGHT...N wind 25 kt. Seas 8 ft.
.TUE...N wind 25 kt. Seas 8 ft.
.WED THROUGH THU...N wind 20 kt. Seas 7 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
450 PM AKST Fri Nov 27 2020

.ANALYSIS AND UPPER LEVELS...

Quite a busy weather day for our forecast area. Three surface low
pressure systems exist, two of which are weather producers for us
today. First, a surface low just south of Prince William Sound has
been creating impactful weather for Southcentral AK. A deformation
band with this low has produced heavy snow for the Western Susitna
Valley and another band of moisture along coastal Southcentral is
producing heavy snow through Turnagain Pass and snowfall in
Turnagain Arm and Anchorage Bowl. The second low is a strong low
in currently in the Eastern Aleutians, with Hurricane Force wind
gusts wrapping around the backside of the low. A front from this
low is currently entering the Western Gulf of Alaska as well. The
third low is in the Western Bering and not yet impactful. The
three are making for some very interesting satellite shots.

All of this active weather is supported in the upper levels by a
complex longwave trough that encompasses most of our forecast
area. Several upper low centers are spinning within this trough,
three of which are associated with the aforementioned surface lows.
This trough extends all the was from Eastern Siberia to Central
Alaska. Induced shortwave ridging is developing between the low in
the Gulf of Alaska and the low in the Eastern Aleutians, which is
the only bit of ridging that can be seen in our forecast area.

&&

.MODEL DISCUSSION...

On the synoptic scale, models are performing well and in good
agreement. They are capturing the overall weather pattern. When we
focus in on the mesoscale, disagreement and performance issues
emerge with our major models. This is mainly the case for
Southcentral AK. They have had difficulty depicting the current
round of snowfall in Southcentral AK and are having trouble
resolving the next frontal system slated to move into the Gulf of
Alaska tonight. This has made for difficulty in forecasting the
finer details, dropping our confidence level for the next couple
of days, specifically along coastal areas. In the western part of
our forecast area, models are performing better and we have higher
confidence in the forecast.

&&

.AVIATION...

PANC...A heavier band of snow moved through this morning reducing
the airfield to IFR conditions. The heaviest snow has moved
through and MVFR conditions can be expected with light snow
showers into the evening. Winds should stay light and variable.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3:
Tonight through Sunday)...

The amount of snow will vary across from Kenai Peninsula through
Prince William Sound to Anchorage this evening, thanks to
remaining remnants over the Gulf that are still making their way
inland which will bring additional snowfall tonight.

More mixed snow and rain are heading our way as a result of the
next storm from the Bering Sea. The leading edge of the frontal
system from the storm has already reached Kodiak this afternoon,
and this system will race northward toward Kenai Peninsula and
Prince William Sound through Saturday morning. Along the axis of
the frontal boundary, a couple other lows will emerge from it and
may keep snowy conditions near Anchorage Bowl through the weekend.
For now, the models suggest at least two separate microscale lows
with the first one emerging near Kodiak on Saturday morning and
the other over Cook Inlet on Sunday afternoon. It should not come
as a surprise should the areal coverage for snow increases through
Monday. Although strong winds from the frontal boundary will reach
much of Prince William Sound by Saturday morning, but these strong
winds are expected to be short-lived.

Patchy fog was observed around the Anchorage Bowl this afternoon,
and this situation will continue through late tonight. Freezing
spray is also expected in the next couple days mainly over the Cook
Inlet and Kamishak Bay. The combination of moderate to strong
winds and cold temperatures are favorable ingredients for
freezing spray.

&&

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

The cold weather pattern continues across Southwest Alaska this
afternoon, with a few lingering snow showers over interior Bristol
Bay. Cloud cover and the chance for precipitation will increase
this evening for the mainland as a frontal system lifts northward
overnight into Saturday morning. This system has stayed all rain
earlier today for the Alaska Peninsula, which will transition to
snow or a mix of rain and snow as temperatures cool overnight.

The potential for blowing snow across Bristol Bay from Dillingham
to Koliganek is the main focus for this forecast package. As the
front lifts northward, strong winds and gusts are possible, as
well as a few inches of snowfall. Blowing snow is a concern with
these conditions, which could lower visibility to a half mile at
times. Thus, a Winter Weather Advisory for blowing snow has been
issued through Friday morning for these areas.

The Kuskokwim Delta and Valley should stay relatively dry through
Friday, when a chance of snow returns to the Kuskokwim Valley.
Temperatures across the region will continue to fall through the
weekend as northerly flow allows cold air advection to move into
the area.

&&

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

High winds across the central Aleutians will continue through the
evening hours as a storm force low positioned just north of Dutch
Harbor tracks over the Alaska Peninsula and back into the North
Pacific by Saturday morning. A High Wind Warning remains in effect
through this evening for the eastern Aleutians, including
Nikolski, which has already seen warning level gusts of 80 mph.

A second storm force low over the western Bering this afternoon
will continue to weaken overnight as it dives south crossing the
central Aleutians Saturday afternoon and into the North Pacific
through the evening hours. Widespread precipitation will accompany
the two aforementioned systems, diminishing through Sunday
morning.

Another storm force system will move into the forecast area by
Sunday morning, with the associated front tracking over the
western Aleutians. This low will skirt the Aleutians, keeping the
strongest core of winds and widespread precipitation for the
Aleutian Chain as it tracks eastward towards the Alaska Peninsula
for Monday.

&&

.MARINE (Days 3 through 5/Monday through Wednesday)...

Gulf: A weak low lingers in the Northern Gulf through Monday
afternoon before moving onshore and dissipating. On Tuesday, a
series of shortwaves troughs move across the Gulf towards the
North Gulf Coast as a second weakening low approaches Kodiak
Island from the south. Winds will be primarily southeasterly on
Monday, transitioning to southerly by Tuesday afternoon as the
low moves north. Storm force winds may result as the front pushes
the North Gulf Coast, with a barrier jet likely to set up late
Monday night. Winds should begin to dissipate by Tuesday evening.

Bering: A strong North Pacific low pushes towards the western Gulf
over the course of a few days. This results in widespread gales
across the Southern Bering and possible storm force winds along
the central/eastern Aleutian coasts Monday into Tuesday. On
Tuesday the low is positioned further east and lingering gales and
small craft winds will be confined to the Southwest coastal
waters. Additionally, flow will be primarily northerly on Tuesday
with colder air being advected along the coast, thus, freezing
spray is likely, with heavy freezing spray possible along parts of
the immediate coast. High pressure sets up over the Central Bering
Tuesday afternoon.

&&

.LONG TERM FORECAST (Days 4 through 7/Tuesday through Friday)...

A strong front pushes the Southcentral Coast late Monday night.
With this, widespread precipitation is likely, with the heaviest
along Western Prince William Sound and Eastern Kenai. Further
inland, snow is likely through Wednesday morning before becoming a
rain/snow mix in the lower elevation. Significant warm air
follows this front, thus, precipitation along the coast should
start as a snow or rain/snow mix Tuesday morning and transition to
all rain by Tuesday afternoon. Rain will likely linger through
Thursday as a second low pushes the coast from the Southern Gulf.
Precipitation transitions back to snow by Friday with colder air
behind the low.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...
Storm Warning 119 172 174 177 178 411.
Gale Warning 120 125 128 130 132 138 139 140 150 155 160 165 170
173 175 176 180 351 352 413 414 .
Heavy Freezing Spray 180 181.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...BB
SOUTHCENTRAL ALASKA...CB
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AH
MARINE/LONG TERM...KM