Small Craft Advisory 971, NWS Anchorage, AK

438 
FZAK51 PAFC 160032
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
332 PM AKST Tue Dec 15 2020

Coastal Waters Forecast for the Northern Gulf of Alaska Coast
up to 100 nm out including Kodiak Island and Cook Inlet.

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.

PKZ197-161330-
332 PM AKST Tue Dec 15 2020
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A front over the southwest Gulf moves into the eastern Gulf
through Wed afternoon. A 976 mb low 165 nm south of Cold Bay Wed 
afternoon moves to 60 nm southwest of Kodiak City at 974 mb by 
Thu afternoon.

$$

PKZ119-161330-
Cape Suckling to Cape Cleare-
332 PM AKST Tue Dec 15 2020

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

.TONIGHT...Variable wind less than 15 kt becoming W 25 kt after 
midnight. Seas 7 ft building to 13 ft after midnight.
.WED...W wind 25 kt. Seas 10 ft.
.WED NIGHT...W wind 15 kt becoming E 20 kt after midnight. Seas
8 ft.
.THU...E wind 40 kt. Seas 10 ft.
.THU NIGHT...NE wind 30 kt. Seas 10 ft.
.FRI...SE wind 25 kt. Seas 15 ft.
.SAT...SW wind 25 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 14 ft.

$$

PKZ120-161330-
Cape Cleare to Gore Point-
332 PM AKST Tue Dec 15 2020

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

.TONIGHT...Variable wind less than 10 kt becoming W 25 kt after 
midnight. Seas 7 ft building to 12 ft after midnight.
.WED...W wind 25 kt. Seas 10 ft.
.WED NIGHT...Variable wind 10 kt becoming E 25 kt after midnight.
Seas 6 ft. Rain and snow.
.THU...NE wind 35 kt. Seas 9 ft.
.THU NIGHT...NE wind 30 kt. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 10 ft.
.SAT THROUGH SUN...W wind 30 kt. Seas 13 ft.

$$

PKZ121-161330-
Resurrection Bay-
332 PM AKST Tue Dec 15 2020

.TONIGHT...N wind 10 kt increasing to 20 kt after midnight. Seas 4 
ft. Freezing spray.
.WED...N wind 20 kt. Seas 4 ft. Freezing spray.
.WED NIGHT...N wind 10 kt increasing to 15 kt after midnight. Seas
3 ft. Freezing spray.
.THU AND THU NIGHT...N wind 20 kt. Seas 4 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...N wind 15 kt. Seas 3 ft.

$$

PKZ125-161330-
Prince William Sound-
332 PM AKST Tue Dec 15 2020

.TONIGHT...Variable wind less than 15 kt becoming NW 20 kt after
midnight. Seas 3 ft.
.WED...NW wind 20 kt. Seas 3 ft.
.WED NIGHT...NE wind 10 kt increasing to 15 kt after midnight.
Seas 2 ft.
.THU AND THU NIGHT...N wind 20 kt. Seas 4 ft.
.FRI THROUGH SAT...NE wind 15 kt. Seas 3 ft.
.SUN...NW wind 10 kt. Seas 2 ft.

$$

PKZ126-161330-
Port Valdez-
332 PM AKST Tue Dec 15 2020

.TONIGHT...Variable wind less than 10 kt becoming E 10 kt after
midnight. Seas 2 ft. Snow.
.WED...E wind 10 kt increasing to 15 kt in the afternoon. Seas 3
ft. Freezing spray. Snow.
.WED NIGHT...E wind 10 kt. Seas 2 ft.
.THU AND THU NIGHT...E wind 15 kt. Seas 3 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ127-161330-
Valdez Narrows-
332 PM AKST Tue Dec 15 2020

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 3 ft. Freezing spray. Rain and
snow.
.WED...NE wind 20 kt. Seas 3 ft. Freezing spray. Rain and snow.
.WED NIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray.
.THU...NE wind 30 kt. Seas 3 ft.
.THU NIGHT...NE wind 35 kt. Seas 4 ft.
.FRI...NE wind 25 kt. Seas 3 ft.
.SAT...NE wind 20 kt. Seas 3 ft.
.SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ128-161330-
Valdez Arm-
332 PM AKST Tue Dec 15 2020

.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. Seas
3 ft.
.WED...NE wind 10 kt. Seas 2 ft. Rain and snow.
.WED NIGHT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.THU...NE wind 20 kt. Seas 4 ft.
.THU NIGHT...NE wind 25 kt. Seas 5 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-161330-
Passage Canal-
332 PM AKST Tue Dec 15 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Gusts to 35 kt near Whittier. Seas 3 ft. 
Freezing spray.
.WED...W wind 20 kt. Seas 3 ft. Freezing spray.
.WED NIGHT...W wind 10 kt. Seas 2 ft. Snow.
.THU...E wind 10 kt. Seas 2 ft.
.THU NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-161330-
West of Barren Islands including Kamishak Bay-
332 PM AKST Tue Dec 15 2020

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 20 kt. Seas 7 ft.
.WED...W wind 20 kt in the morning becoming variable 10 kt. Seas
6 ft.
.WED NIGHT...NE wind 25 kt increasing to 35 kt after midnight.
Seas 6 ft building to 16 ft after midnight.
.THU...NE wind 45 kt. Seas 20 ft.
.THU NIGHT...NE wind 35 kt. Seas 16 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.SAT...NW wind 25 kt. Seas 7 ft.
.SUN...W wind 30 kt. Seas 9 ft.

$$

PKZ131-161330-
Barren Islands East-
332 PM AKST Tue Dec 15 2020

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

.TONIGHT...W wind 15 kt increasing to 25 kt after midnight. Seas 6
ft. building to 11 ft after midnight.
.WED...W wind 20 kt. Seas 9 ft.
.WED NIGHT...SE wind 15 kt becoming E 25 kt after midnight. Seas
7 ft. Rain.
.THU...NE wind 40 kt. Seas 9 ft.
.THU NIGHT...NE wind 30 kt. Seas 11 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 30 kt. Seas 13 ft.

$$

PKZ132-161330-
Marmot Island to Sitkinak-
332 PM AKST Tue Dec 15 2020

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

.TONIGHT...W wind 20 kt. Seas 10 ft.
.WED...SW wind 15 kt. Seas 8 ft.
.WED NIGHT...SE wind 25 kt. Seas 10 ft. Rain.
.THU...E wind 20 kt. Seas 12 ft.
.THU NIGHT...NW wind 25 kt. Seas 13 ft.
.FRI...W wind 25 kt. Seas 13 ft.
.SAT THROUGH SUN...W wind 30 kt. Seas 14 ft.

$$

PKZ136-161330-
Chiniak Bay-
332 PM AKST Tue Dec 15 2020

.TONIGHT...W wind 10 kt. Seas 2 ft.
.WED...SW wind 10 kt. Seas 2 ft. Rain.
.WED NIGHT...E wind 15 kt. Seas 4 ft. Rain.
.THU...NE wind 20 kt. Seas 6 ft.
.THU NIGHT...N wind 20 kt. Seas 4 ft.
.FRI...W wind 15 kt. Seas 2 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 4 ft.

$$

PKZ137-161330-
Marmot Bay-
332 PM AKST Tue Dec 15 2020

.TONIGHT...W wind 15 kt. Seas 3 ft.
.WED...SW wind 10 kt becoming SE in the afternoon. Seas 3 ft.
.WED NIGHT...E wind 20 kt. Seas 4 ft building to 7 ft after
midnight. Rain with snow.
.THU...NE wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 20 kt. Seas 7 ft.
.FRI...W wind 15 kt. Seas 2 ft.
.SAT...W wind 25 kt. Seas 6 ft.
.SUN...W wind 30 kt. Seas 6 ft.

$$

PKZ138-161330-
Shelikof Strait-
332 PM AKST Tue Dec 15 2020

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...W wind 20 kt. Seas 5 ft.
.WED...SW wind 15 kt becoming SE in the afternoon. Seas 4 ft.
.WED NIGHT...NE wind 25 kt increasing to 35 kt after midnight.
Seas
6 ft building to 16 ft after midnight. Rain and snow.
.THU...NE wind 40 kt. Seas 18 ft.
.THU NIGHT...N wind 30 kt. Seas 10 ft.
.FRI...W wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 6 ft.

$$

PKZ139-161330-
Cook Inlet Kalgin Island to Point Bede-
332 PM AKST Tue Dec 15 2020

...SMALL CRAFT ADVISORY WEDNESDAY NIGHT...

.TONIGHT...Variable wind less than 10 kt becoming SW wind 20 kt
after midnight. Seas 3 ft building to 5 ft after midnight.
.WED...NW wind 15 kt becoming NE 10 kt in the afternoon. Seas 4
ft.
.WED NIGHT...N wind 30 kt. Seas 5 ft building to 11 ft after
midnight. Freezing spray.
.THU AND THU NIGHT...NE wind 35 kt. Seas 14 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.SAT...N wind 15 kt. Seas 3 ft.
.SUN...NW wind 20 kt. Seas 4 ft.

$$

PKZ140-161330-
Cook Inlet North of Kalgin Island-
332 PM AKST Tue Dec 15 2020

.TONIGHT...Variable wind less than 10 kt becoming SW 10 kt after
midnight. Seas 2 ft.
.WED...SW wind 10 kt becoming NE in the afternoon. Seas 2 ft.
.WED NIGHT...N wind 15 kt. Seas 4 ft. Freezing spray.
.THU AND THU NIGHT...NE wind 20 kt. Seas 8 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...N wind 10 kt. Seas 3 ft.

$$

PKZ141-161330-
Kachemak Bay-
332 PM AKST Tue Dec 15 2020

.TONIGHT...Variable wind less than 10 kt becoming W 15 kt after 
midnight. Seas 2 ft building to 4 ft after midnight.
.WED...W wind 15 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.WED NIGHT...NE wind 10 kt. Seas 2 ft.
.THU AND THU NIGHT...N wind 20 kt. Seas 3 ft.
.FRI THROUGH SAT...NW wind 10 kt. Seas 2 ft.
.SUN...W wind 15 kt. Seas 4 ft.

$$

341 
FZAK51 PAFC 161306
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
406 AM AKST Wed Dec 16 2020

Coastal Waters Forecast for the Northern Gulf of Alaska Coast
up to 100 nm out including Kodiak Island and Cook Inlet.

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.

PKZ197-170145-
406 AM AKST Wed Dec 16 2020

.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...An area of low pressure lingers over the northern
Gulf through Thu evening. A 984 mb North Pacific low 300 nm 
southwest of Chirikof Island moves to 110 nm southeast of Middleton 
Island at 974 mb Thu night.

$$

PKZ119-170145-
Cape Suckling to Cape Cleare-
406 AM AKST Wed Dec 16 2020

...GALE WARNING THURSDAY...

.TODAY...W wind 20 kt early increasing to 30 kt. Seas 10 ft.
.TONIGHT...W wind 25 kt becoming SE 20 kt after midnight. Seas 8 ft.
Snow and rain.
.THU...E wind 35 kt. Seas 11 ft. Rain with snow.
.THU NIGHT...NE wind 30 kt. Seas 11 ft.
.FRI...SE wind 25 kt. Seas 15 ft.
.SAT THROUGH SUN...W wind 35 kt. Seas 16 ft.

$$

PKZ120-170145-
Cape Cleare to Gore Point-
406 AM AKST Wed Dec 16 2020

...SMALL CRAFT ADVISORY TODAY AND THURSDAY...

.TODAY...W wind 15 kt early increasing to 25 kt. Seas 10 ft.
.TONIGHT...W wind 15 kt becoming E 20 kt after midnight. Seas 6
ft. Snow and rain.
.THU...NE wind 30 kt. Seas 9 ft. Rain and snow.
.THU NIGHT...NE wind 30 kt. Seas 10 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.SAT THROUGH SUN...W wind 40 kt. Seas 15 ft.

$$

PKZ121-170145-
Resurrection Bay-
406 AM AKST Wed Dec 16 2020

.TODAY...N wind 15 kt early increasing to 20 kt. Seas 4 ft. Freezing
spray.
.TONIGHT...N wind 20 kt. Seas 4 ft. Freezing spray.
.THU...N wind 20 kt. Gusts to 30 kt near Seward. Seas 4 ft. Freezing
spray.
.THU NIGHT...N wind 20 kt. Seas 4 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...N wind 15 kt. Seas 3 ft.

$$

PKZ125-170145-
Prince William Sound-
406 AM AKST Wed Dec 16 2020

.TODAY...NW wind 10 kt early increasing to 20 kt. Seas 4 ft.
.TONIGHT...NE wind 10 kt increasing to 15 kt after midnight. Seas
2 ft.
.THU...NE wind 20 kt. Seas 4 ft.
.THU NIGHT...N wind 20 kt. Seas 4 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...N wind 10 kt. Seas 2 ft.

$$

PKZ126-170145-
Port Valdez-
406 AM AKST Wed Dec 16 2020

.TODAY...E wind 10 kt increasing to 15 kt in the afternoon. Seas
3 ft. Snow.
.TONIGHT...E wind 10 kt. Seas 2 ft.
.THU...E wind 15 kt. Seas 3 ft. Freezing spray.
.THU NIGHT...E wind 15 kt. Seas 3 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.SAT...E wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-170145-
Valdez Narrows-
406 AM AKST Wed Dec 16 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NE wind 30 kt. Seas 3 ft. Freezing spray. Snow.
.TONIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray.
.THU...NE wind 30 kt. Seas 3 ft. Freezing spray.
.THU NIGHT...NE wind 35 kt. Seas 4 ft.
.FRI...NE wind 25 kt. Seas 3 ft.
.SAT...NE wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ128-170145-
Valdez Arm-
406 AM AKST Wed Dec 16 2020

...SMALL CRAFT ADVISORY THURSDAY...

.TODAY...NE wind 15 kt. Seas 3 ft. Rain and snow.
.TONIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray.
.THU...NE wind 25 kt. Seas 5 ft. Freezing spray.
.THU NIGHT...NE wind 25 kt. Seas 5 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-170145-
Passage Canal-
406 AM AKST Wed Dec 16 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt. Seas 4 ft. Freezing spray.
.TONIGHT...W wind 15 kt becoming variable wind 10 kt after
midnight. Seas 2 ft. Freezing spray.
.THU...E wind 10 kt. Seas 2 ft. Snow.
.THU NIGHT...W wind 15 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind 10 kt. Seas 2 ft.

$$

PKZ130-170145-
West of Barren Islands including Kamishak Bay-
406 AM AKST Wed Dec 16 2020

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...W wind 20 kt in the morning becoming variable 10 kt. Seas
5 ft.
.TONIGHT...NE wind 25 kt increasing to 35 kt after midnight. Seas
6 ft building to 14 ft after midnight.
.THU...NE wind 35 kt. Seas 15 ft.
.THU NIGHT...NE wind 30 kt. Seas 12 ft.
.FRI...N wind 30 kt. Seas 9 ft.
.SAT THROUGH SUN...W wind 30 kt. Seas 8 ft.

$$

PKZ131-170145-
Barren Islands East-
406 AM AKST Wed Dec 16 2020

...GALE WARNING THURSDAY...

.TODAY...W wind 15 kt early increasing to 25 kt. Seas 9 ft.
.TONIGHT...SE wind 15 kt becoming E 25 kt after midnight. Seas 6
ft. Rain.
.THU...NE wind 35 kt. Seas 8 ft. Rain with snow.
.THU NIGHT...N wind 25 kt. Seas 11 ft.
.FRI...NW wind 30 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 35 kt. Seas 13 ft.

$$

PKZ132-170145-
Marmot Island to Sitkinak-
406 AM AKST Wed Dec 16 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...S wind 20 kt. Seas 8 ft.
.TONIGHT...SE wind 20 kt becoming E 30 kt after midnight. N of
Dangerous Cape, SE wind 15 kt. Seas 9 ft. Rain.
.THU...N wind 30 kt except NE 20 kt N of Dangerous Cape. Seas 9
ft. Rain.
.THU NIGHT...NW wind 25 kt. Seas 11 ft.
.FRI...W wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 30 kt. Seas 11 ft.

$$

PKZ136-170145-
Chiniak Bay-
406 AM AKST Wed Dec 16 2020

.TODAY...SW wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.TONIGHT...E wind 15 kt. Seas 4 ft. Rain and snow.
.THU...NE wind 15 kt becoming N 10 kt in the afternoon. Seas 4 ft.
Rain with snow.
.THU NIGHT...N wind 15 kt. Seas 3 ft.
.FRI...W wind 20 kt. Seas 3 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 4 ft.

$$

PKZ137-170145-
Marmot Bay-
406 AM AKST Wed Dec 16 2020

.TODAY...SW wind 10 kt in the morning becoming variable less than
10 kt. Seas 3 ft.
.TONIGHT...E wind 20 kt. Seas 5 ft. Snow.
.THU...NE wind 20 kt. Seas 6 ft. Rain and snow.
.THU NIGHT...N wind 15 kt. Seas 3 ft.
.FRI...W wind 25 kt. Seas 5 ft.
.SAT...W wind 30 kt. Seas 6 ft.
.SUN...SW wind 25 kt. Seas 6 ft.

$$

PKZ138-170145-
Shelikof Strait-
406 AM AKST Wed Dec 16 2020

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

.TODAY...SW wind 15 kt becoming SE in the afternoon. Seas 3 ft.
.TONIGHT...E wind 20 kt becoming NE 30 kt after midnight. Seas 6
ft
building to 13 ft after midnight. Snow.
.THU...NE wind 30 kt. Seas 14 ft. Snow.
.THU NIGHT...NE wind 25 kt. Seas 8 ft.
.FRI THROUGH SUN...SW wind 25 kt. Seas 6 ft.

$$

PKZ139-170145-
Cook Inlet Kalgin Island to Point Bede-
406 AM AKST Wed Dec 16 2020

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

.TODAY...NW wind 15 kt becoming NE 10 kt in the afternoon. Seas 2 ft.
.TONIGHT...NE wind 30 kt. Seas 6 ft building to 11 ft after midnight.
Freezing spray.
.THU...N wind 30 kt. Seas 12 ft. Freezing spray.
.THU NIGHT...NE wind 30 kt. Seas 10 ft.
.FRI...N wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 4 ft.

$$

PKZ140-170145-
Cook Inlet North of Kalgin Island-
406 AM AKST Wed Dec 16 2020

.TODAY...Variable wind less than 10 kt becoming NE 10 kt in the
afternoon. Seas 2 ft.
.TONIGHT...N wind 15 kt. Seas 4 ft. Freezing spray.
.THU...NE wind 20 kt. Seas 5 ft. Freezing spray.
.THU NIGHT...NE wind 15 kt. Seas 5 ft.
.FRI...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...N wind 10 kt. Seas 3 ft.

$$

PKZ141-170145-
Kachemak Bay-
406 AM AKST Wed Dec 16 2020

.TODAY...W wind 15 kt becoming E 10 kt in the afternoon. Seas 4 ft
subsiding to 2 ft in the afternoon.
.TONIGHT...NE wind 10 kt. Seas 2 ft.
.THU...N wind 20 kt. Seas 2 ft. Freezing spray.
.THU NIGHT...N wind 15 kt. Seas 2 ft.
.FRI...N wind 10 kt. Seas 2 ft.
.SAT...W wind 20 kt. Seas 4 ft.
.SUN...W wind 15 kt. Seas 4 ft.

$$

570 
FZAK51 PAFC 170021
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
321 PM AKST Wed Dec 16 2020

Coastal Waters Forecast for the Northern Gulf of Alaska Coast
up to 100 nm out including Kodiak Island and Cook Inlet.

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.

PKZ197-171300-
321 PM AKST Wed Dec 16 2020
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 974 mb low 170 nm south of Sitkinak Thu morning moves to 150 nm
west of Kodiak City at 972 mb by Thu afternoon and then moves 
inland over the North Gulf Coast by Fri afternoon.

$$

PKZ119-171300-
Cape Suckling to Cape Cleare-
321 PM AKST Wed Dec 16 2020

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

.TONIGHT...W wind 15 kt becoming SE 20 kt after midnight. Seas 8 ft.
.THU...E wind 30 kt increasing to 40 kt in the afternoon. Seas
12 ft. Rain with snow.
.THU NIGHT...NE wind 35 kt diminishing to 25 kt after midnight.
Seas 13 ft. Rain and snow.
.FRI...N wind 25 kt. Seas 11 ft.
.FRI NIGHT...S wind 20 kt. Seas 15 ft.
.SAT THROUGH SUN...W wind 35 kt. Seas 16 ft.
.MON...S wind 35 kt. Seas 17 ft.

$$

PKZ120-171300-
Cape Cleare to Gore Point-
321 PM AKST Wed Dec 16 2020

...GALE WARNING THURSDAY...

.TONIGHT...W wind 15 kt becoming E 20 kt after midnight. Seas 6
ft. Rain.
.THU...NE wind 35 kt. Seas 11 ft. Rain with snow.
.THU NIGHT...NE wind 30 kt becoming NW 15 kt after midnight. Seas
13 ft.
.FRI...NW wind 15 kt. Seas 9 ft.
.FRI NIGHT...NW wind 25 kt. Seas 10 ft.
.SAT THROUGH SUN...W wind 40 kt. Seas 15 ft.
.MON...S wind 40 kt. Seas 21 ft.

$$

PKZ121-171300-
Resurrection Bay-
321 PM AKST Wed Dec 16 2020

.TONIGHT...N wind 10 kt increasing to 20 kt after midnight. Seas 4 
ft. Freezing spray.
.THU...N wind 20 kt. Seas 4 ft. Freezing spray. Snow.
.THU NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray.
.FRI...N wind 20 kt. Seas 4 ft.
.FRI NIGHT...N wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...N wind 15 kt. Seas 3 ft.
.MON...E wind 20 kt. Seas 4 ft.

$$

PKZ125-171300-
Prince William Sound-
321 PM AKST Wed Dec 16 2020

.TONIGHT...NE wind 10 kt increasing to 15 kt after midnight. Seas
2 ft.
.THU...NE wind 20 kt. Seas 4 ft.
.THU NIGHT...N wind 20 kt. Seas 3 ft.
.FRI...N wind 10 kt. Seas 2 ft.
.FRI NIGHT...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...N wind 10 kt. Seas 2 ft.
.MON...E wind 25 kt. Seas 6 ft.

$$

PKZ126-171300-
Port Valdez-
321 PM AKST Wed Dec 16 2020

.TONIGHT...NE wind 10 kt. Seas 2 ft.
.THU...E wind 15 kt. Seas 3 ft. Freezing spray.
.THU NIGHT...E wind 15 kt. Seas 3 ft. Freezing spray.
.FRI...E wind 15 kt. Seas 3 ft.
.FRI NIGHT...E wind 10 kt. Seas 2 ft.
.SAT...E wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.
.MON...NE wind 10 kt. Seas 2 ft.

$$

PKZ127-171300-
Valdez Narrows-
321 PM AKST Wed Dec 16 2020

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray.
.THU...NE wind 30 kt. Seas 4 ft. Freezing spray.
.THU NIGHT...NE wind 35 kt. Seas 4 ft. Freezing spray.
.FRI AND FRI NIGHT...NE wind 25 kt. Seas 3 ft.
.SAT...NE wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.
.MON...NE wind 10 kt. Seas 2 ft.

$$

PKZ128-171300-
Valdez Arm-
321 PM AKST Wed Dec 16 2020

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

.TONIGHT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.THU...NE wind 15 kt increasing to 25 kt in the afternoon. Seas 3
ft building to 5 ft in the afternoon. Freezing spray.
.THU NIGHT...NE wind 25 kt. Seas 5 ft.
.FRI AND FRI NIGHT...NE wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NE wind 10 kt. Seas 2 ft.
.MON...NE wind 15 kt. Seas 3 ft.

$$

PKZ129-171300-
Passage Canal-
321 PM AKST Wed Dec 16 2020

.TONIGHT...W wind 15 kt becoming variable wind 10 kt after midnight.
Seas 2 ft. Freezing spray. Snow.
.THU...E wind 10 kt. Seas 2 ft. Snow.
.THU NIGHT...W wind 10 kt increasing to 15 kt after midnight. Seas
2 ft. Freezing spray.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind 10 kt. Seas 2 ft.
.MON...E wind 15 kt. Seas 2 ft.

$$

PKZ130-171300-
West of Barren Islands including Kamishak Bay-
321 PM AKST Wed Dec 16 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...Variable wind 15 kt becoming NE 35 kt after midnight. 
Seas 8 ft building to 14 ft after midnight.
.THU...NE wind 35 kt. Seas 16 ft.
.THU NIGHT...NE wind 30 kt. Seas 12 ft subsiding to 7 ft after
midnight.
.FRI AND FRI NIGHT...NW wind 20 kt. Seas 4 ft.
.SAT THROUGH SUN...W wind 30 kt. Seas 8 ft.
.MON...SE wind 35 kt. Seas 10 ft.

$$

PKZ131-171300-
Barren Islands East-
321 PM AKST Wed Dec 16 2020

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

.TONIGHT...Variable wind 15 kt becoming E 25 kt after midnight. Seas
5 ft building to 10 ft after midnight. Rain.
.THU...NE wind 30 kt. Seas 10 ft. Rain with snow.
.THU NIGHT...N wind 30 kt becoming NW 20 kt after midnight. Seas
12 ft.
.FRI...NW wind 15 kt. Seas 9 ft.
.FRI NIGHT...W wind 25 kt. Seas 11 ft.
.SAT THROUGH SUN...W wind 35 kt. Seas 13 ft.
.MON...S wind 35 kt. Seas 22 ft.

$$

PKZ132-171300-
Marmot Island to Sitkinak-
321 PM AKST Wed Dec 16 2020

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

.TONIGHT...SE wind 15 kt becoming E 25 kt after midnight. Seas 5 ft 
building to 10 ft after midnight. Rain.
.THU...NE wind 30 kt except NE 25 kt N of Dangerous Cape. Seas
10 ft. Rain.
.THU NIGHT...NW wind 25 kt. Seas 12 ft.
.FRI AND FRI NIGHT...W wind 25 kt. Seas 12 ft.
.SAT THROUGH SUN...W wind 30 kt. Seas 11 ft.
.MON...S wind 40 kt. Seas 24 ft.

$$

PKZ136-171300-
Chiniak Bay-
321 PM AKST Wed Dec 16 2020

.TONIGHT...SE wind 10 kt becoming E 15 kt after midnight. Seas 2 ft
building to 6 ft after midnight. Rain with snow.
.THU...NE wind 20 kt. Seas 6 ft subsiding to 3 ft in the
afternoon. Rain with snow.
.THU NIGHT...NW wind 15 kt diminishing to 10 kt after midnight.
Seas 2 ft.
.FRI...NW wind 10 kt. Seas 2 ft.
.FRI NIGHT...W wind 20 kt. Seas 3 ft.
.SAT THROUGH SUN...W wind 25 kt. Seas 4 ft.
.MON...S wind 30 kt. Seas 11 ft.

$$

PKZ137-171300-
Marmot Bay-
321 PM AKST Wed Dec 16 2020

.TONIGHT...E wind 10 kt increasing to 15 kt after midnight. Seas
2 ft building to 6 ft after midnight. Rain and snow.
.THU...NE wind 20 kt. Seas 6 ft. Rain with snow.
.THU NIGHT...NW wind 15 kt diminishing to 10 kt after midnight.
Seas 2 ft.
.FRI...NW wind 10 kt. Seas 2 ft.
.FRI NIGHT...W wind 15 kt. Seas 3 ft.
.SAT...W wind 30 kt. Seas 6 ft.
.SUN...SW wind 25 kt. Seas 6 ft.
.MON...SE wind 30 kt. Seas 12 ft.

$$

PKZ138-171300-
Shelikof Strait-
321 PM AKST Wed Dec 16 2020

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

.TONIGHT...Variable wind less than 15 kt becoming NE 30 kt after 
midnight. Seas 7 ft building to 13 ft after midnight. Snow and rain.
.THU...NE wind 30 kt. Seas 13 ft. Snow and rain.
.THU NIGHT...NE wind 25 kt. Seas 8 ft subsiding to 3 ft after
midnight.
.FRI AND FRI NIGHT...W wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...SW wind 25 kt. Seas 6 ft.
.MON...SE wind 30 kt. Seas 8 ft.

$$

PKZ139-171300-
Cook Inlet Kalgin Island to Point Bede-
321 PM AKST Wed Dec 16 2020

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

.TONIGHT...Variable wind less than 15 kt becoming NE 30 kt after
midnight. Seas 5 ft building to 11 ft after midnight. Freezing spray
and patchy freezing fog.
.THU...N wind 30 kt. Seas 12 ft. Freezing spray.
.THU NIGHT...NE wind 30 kt. Seas 10 ft subsiding to 5 ft after
midnight. Freezing spray.
.FRI...NE wind 20 kt. Seas 4 ft.
.FRI NIGHT...N wind 15 kt. Seas 3 ft.
.SAT THROUGH SUN...NW wind 20 kt. Seas 4 ft.
.MON...NE wind 25 kt. Seas 5 ft.

$$

PKZ140-171300-
Cook Inlet North of Kalgin Island-
321 PM AKST Wed Dec 16 2020

.TONIGHT...N wind 15 kt. Seas 4 ft. Freezing spray and patchy
fog.
.THU...NE wind 20 kt. Seas 6 ft. Freezing spray.
.THU NIGHT...NE wind 15 kt. Seas 4 ft. Freezing spray.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.FRI NIGHT...NE wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...N wind 10 kt. Seas 3 ft.
.MON...NE wind 20 kt. Seas 4 ft.

$$

PKZ141-171300-
Kachemak Bay-
321 PM AKST Wed Dec 16 2020

.TONIGHT...NE wind 10 kt. Seas 2 ft. Patchy freezing fog.
.THU...N wind 15 kt. Seas 2 ft. Freezing spray.
.THU NIGHT...N wind 15 kt diminishing to 10 kt after midnight.
Seas 2 ft.
.FRI AND FRI NIGHT...N wind 10 kt. Seas 2 ft.
.SAT...W wind 20 kt. Seas 4 ft.
.SUN...W wind 15 kt. Seas 4 ft.
.MON...E wind 15 kt. Seas 2 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
453 AM AKST Tue Dec 15 2020

.ANALYSIS AND UPPER LEVELS...

A broad upper level trough from a stacked North Pacific low runs
northwestward past Bristol Bay and Kusko Delta, while an upper
level ridge parks over the AlCan border. Steady light snow
continues to move across portions of Prince William Sound and
Copper River Basin, including Gulkana. Radar and weather
observations at Cordova and Whittier reported light rain which
coincides with warmer temperatures around the northern Gulf
ranging from the mid to upper 30s. At Southwest Alaska, continuous
light snow persists over much of the area, except at a couple of
warmer spots along the west corridor of the Alaska Range. Cold air
advection filling in from the eastern Bering will continue to
support dispersing of light snow across Southwest Alaska. Cirrus
and high level clouds from the Gulf will move across the lower
Kuskokwim Valley through Southcentral today.

&&

.MODEL DISCUSSION...

The short-term synoptic pattern is well-handled by the models
except for brief periods where ECM wanders further away from GFS
and NAM. Both GFS and NAM shares compatible solutions staging the
onset of a North Pacific storm aiming for the Gulf in the days
ahead. Over the Bering, a series of Northwest Pacific lows will
drive embedded shortwaves across the eastern Bering. This will
enhance mix rain/snow over Southwest Alaska and may last through
at least Thursday and/or Friday. By far, GFS is the overachiever
of all the models, as its past performance speaks for the current
events. As a result, there is low confidence in the model forecast
beyond Thursday night.

&&

.AVIATION...As light snow continues through the day, expect cigs
and vis to generally trend downward. Confidence is only moderate
in exactly how far conditions will fall. Due to the dry nature of
the snow, visibility will likely have a better chance for being
reduced. A period of heavier snow is expected later tonight which
should cause the worst conditions during the TAF window.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2/Tuesday
through Wednesday)...

The commencement of a long duration snowfall event is in progress
across much of Southcentral. The low levels have saturated and
the light snow is starting to reach the surface across the
interior valleys. It is being driven by weak isentropic ascent to
kick off the event. The snow is anticipated to continue nearly
uninterrupted for much of Tuesday into early Wednesday from the
northern Kenai Peninsula to the eastern Susitna Valley, in
addition to most of the Copper River Basin. While snowfall rates
are not expected to be significant, the prolonged duration
combined with the fluffy and dry nature of the snow will still
yield storm totals of 2-4 inches across Anchorage with locally up
to 6 inches for the upper hillsides and in/around Hatcher Pass.
Widespread amounts of 3-5 inches are expected for the Copper River
Basin before precipitation wanes from southwest to northeast
during the morning and early afternoon on Wednesday. Driving
conditions could be adversely impacted for much of the day into
tonight, particularly with lowered visibilities during any periods
of increased snow intensity.

A negatively-tilted shortwave trough will eject from an upper
level low centered out over the Y-K Delta tonight into early
Wednesday. The forcing for the continuing snowfall over the Mat-
Su Valleys will increasingly become aided by both positive
vorticity advection in the mid levels and by upslope flow as
winds near 700 mb become more westerly in the Anchorage bowl. Snow
may pick up in intensity for several hours along the western edge
of the Chugach Range before the trough axis passes through and
snow quickly shuts off by midday Wednesday. Another system will
approach from the southwest by Wednesday night with mixed
precipitation possible around Kodiak Island. Northeast gale force
winds should quickly materialize across the southern Cook Inlet
and Shelikof Strait as the low approaches Kodiak early Thursday
morning. With onshore flow, precipitation amounts could add up to
around one inch of liquid for Kodiak City from late Wed to late
Thu.

&&

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

Light snow will continue across northwestern Bristol Bay and the
Kuskokwim Delta today under a near weakening low. Additional
totals of 1 to 2 inches are possible through midnight. Drier
conditions are expected Wednesday under a weak upper ridge.
Scattered snow showers will re-develop by Thursday, mainly along
the coast, as a low tracks near Kodiak Island. Temperatures are
expected to fall through the week.

&&

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

A strong, compact low is currently moving across the western
Aleutians, bringing rain and gusty southerly winds. This will
weaken as it continues to track eastward. A very similar low will
track near the same area late Wednesday into Thursday, though
there remains uncertainty on its exact position and strength. In
any case, no significant impacts are expected. Rain/snow showers
will track west to east across the central/eastern Aleutians and
Pribilofs tonight into early Wednesday morning along the
aforementioned low's associated front. Rain will become more
steady by late-morning as a broader North Pacific low approaches
the Chain. Gusty southeasterly winds are initially expected,
before switching to northwest by Wednesday evening behind the low.
A number of lows/fronts will continue the unsettled/showery
pattern across the Bering on Thursday.

&&

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

Gulf of Alaska: The forecast period looks to be active during this
time with two lows potentially impacting the Gulf. The first one
Thursday we continue to become more confident in that a gale
force system will impact the Gulf, however, exact track and
intensity remain uncertain affecting where the gale force winds
occur. There may be a brief lull in the gale force winds Friday
especially for the western Gulf. Another gale force system may
impact the Gulf Friday night into Saturday but this one remains
highly uncertain.

Bering Sea: For the eastern Bering, confidence has increased some
since yesterday for a potentially gale force system to impact the
region Thursday through Friday, however, exact placement and
intensity continue to remain uncertain. Confidence is fairly high
for the western, northern, and central Bering for the forecast
period to have relatively benign conditions with winds less than
30 kts and seas less than 15 feet.

&&

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

The weather pattern during the forecast time period continues to
show strong Arctic high pressure locked in over the Interior of
Alaska east to the Yukon Territory. The subtropical jet continues
to remain fairly active during this time frame as well with
multiple storms trying to move northeastward and into the cold
air that is locked in across the interior areas of Alaska and the
Yukon. Latest data suggests that coastal areas of the eastern Kenai
Peninsula, Kodiak Island, and Prince William Sound area have the
best chance to see any meaningful precipitation during this
timeframe. Some of the energy from these systems may occasionally
send some light snow into the Anchorage area and across Southwest
but this time frame looks to remain on the colder side with
temperatures averaging below normal. The exact track and intensity
of any of these systems in this time frame continues to remain
highly uncertain and will become more clearer over the coming
days. Therefore, stay tuned. The weather continues to remain
fairly active as well across the Aleutian Island Chain with
chances for rain and snow accompanied by some wind with any system
that moves through.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale 172 173 174 176 177
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...CB
SOUTHCENTRAL ALASKA...AS/MO
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AP
MARINE/LONG TERM...MV