Storm Warning 166, NWS Anchorage, AK

322 
FZAK51 PAFC 121413 AAA
CWFAER

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
513 AM AKST Tue Dec 12 2023

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.

PKZ197-130415-
513 AM AKST Tue Dec 12 2023
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A series of North Pacific lows and fronts lift northward through
the Gulf of Alaska to the north Gulf Coast through Thursday 
afternoon.

$$

PKZ710-130415-
Cape Suckling to Gravel Point out to 15 NM-
513 AM AKST Tue Dec 12 2023

...GALE WARNING TODAY...

.TODAY...S wind 35 kt in the morning becoming variable 10 kt.
Seas 14 ft. Rain and snow. 
.TONIGHT...NW wind 20 kt in the evening becoming S 30 kt. Seas
12  ft. Snow with rain. 
.WED...S wind 25 kt. Seas 12 ft. Snow and rain. 
.WED NIGHT...SE wind 20 kt. Seas 11 ft. 
.THU...E wind 25 kt. Seas 15 ft. 
.FRI...SE wind 20 kt. Seas 13 ft. 
.SAT...SE wind 30 kt. Seas 12 ft.

$$

PKZ711-130415-
Gravel Point to Cape Cleare out to 15 NM-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 15 kt. Seas 13 ft. 
.TONIGHT...NW wind 25 kt becoming S after midnight. Seas 11 ft.
Rain and snow. 
.WED...S wind 30 kt diminishing to 20 kt in the afternoon. Seas
12 ft. Snow with rain. 
.WED NIGHT...E wind 15 kt. Seas 10 ft. 
.THU...N wind 20 kt. Seas 14 ft. 
.FRI...S wind 20 kt. Seas 12 ft. 
.SAT...SE wind 30 kt. Seas 12 ft.

$$

PKZ712-130415-
Cape Suckling to Cape Cleare from 15 to 75 NM-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 20 kt. Seas 16 ft. 
.TONIGHT...SW wind 30 kt. Seas 15 ft. Rain and snow. 
.WED...S wind 25 kt. Seas 13 ft. Snow with rain. 
.WED NIGHT...SE wind 25 kt. Seas 12 ft. 
.THU...W wind 25 kt. Seas 17 ft. 
.FRI...SW wind 20 kt. Seas 13 ft. 
.SAT...S wind 30 kt. Seas 12 ft.

$$

PKZ715-130415-
Cape Cleare to Gore Point out to 15 NM-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 15 kt. Seas 9 ft. 
.TONIGHT...NW wind 20 kt. Seas 10 ft. Freezing spray. 
.WED...SW wind 20 kt in the morning becoming variable 10 kt. Seas
9 ft. 
.WED NIGHT...NE wind 15 kt. Seas 8 ft. 
.THU...NW wind 20 kt. Seas 9 ft. 
.FRI...S wind 15 kt. Seas 9 ft. 
.SAT...SE wind 20 kt. Seas 12 ft.

$$

PKZ716-130415-
Cape Cleare to Gore Point from 15 to 75 NM-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 20 kt. Seas 11 ft. 
.TONIGHT...SW wind 25 kt. Seas 12 ft. 
.WED...SW wind 25 kt becoming SE 15 kt in the afternoon. Seas
12 ft. Freezing spray. 
.WED NIGHT...Variable wind 10 kt. Seas 9 ft. 
.THU...NW wind 20 kt. Seas 12 ft. 
.FRI THROUGH SAT...S wind 25 kt. Seas 12 ft.

$$

PKZ714-130415-
Resurrection Bay-
513 AM AKST Tue Dec 12 2023

.TODAY...N wind 15 kt. Gusts to 25 kt. Seas 3 ft. 
.TONIGHT...N wind 20 kt. Gusts to 30 kt. Seas 4 ft. Freezing
spray. 
.WED...N wind 20 kt in the morning becoming variable less than
10 kt. Seas 4 ft subsiding to 2 ft in the afternoon. Freezing
spray. Snow. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...N wind 15 kt. Seas 3 ft. 
.FRI...Variable wind 10 kt. Seas 2 ft. 
.SAT...Variable wind 15 kt. Seas 3 ft.

$$

PKZ724-130415-
Northwest Prince William Sound-
513 AM AKST Tue Dec 12 2023

.TODAY...NW wind 15 kt becoming variable 10 kt in the afternoon. 
Seas 2 ft. 
.TONIGHT...NW wind 20 kt becoming S 15 kt after midnight. Seas
3 ft. Snow and rain. 
.WED...SE wind 20 kt. Seas 3 ft. Snow. 
.WED NIGHT...NE wind 15 kt. Seas 2 ft. 
.THU...N wind 10 kt. Seas 2 ft. 
.FRI...NE wind 10 kt. Seas 2 ft. 
.SAT...NE wind 20 kt. Seas 4 ft.

$$

PKZ725-130415-
Central and Eastern Prince William Sound-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...NW wind 10 kt becoming SW in the afternoon. Seas 2 ft. 
.TONIGHT...NW wind 15 kt becoming S 20 kt after midnight. Seas
4 ft. Snow and rain. 
.WED...SE wind 30 kt diminishing to 20 kt in the afternoon. Seas
6 ft subsiding to 4 ft in the afternoon. Snow and rain. 
.WED NIGHT...E wind 15 kt. Seas 3 ft. 
.THU...NE wind 15 kt. Seas 2 ft. 
.FRI...SE wind 10 kt. Seas 2 ft. 
.SAT...E wind 25 kt. Seas 4 ft.

$$

PKZ726-130415-
Southwest Prince William Sound-
513 AM AKST Tue Dec 12 2023

.TODAY...W wind 10 kt becoming SW 15 kt in the afternoon. Seas
2 ft. 
.TONIGHT...W wind 10 kt becoming SW 15 kt after midnight. Seas
3 ft. 
.WED...S wind 20 kt diminishing to 10 kt in the afternoon. Seas
3 ft. Snow. 
.WED NIGHT...NE wind 15 kt. Seas 2 ft. 
.THU...N wind 15 kt. Seas 2 ft. 
.FRI...E wind 10 kt. Seas 2 ft. 
.SAT...E wind 20 kt. Seas 4 ft.

$$

PKZ720-130415-
Port of Valdez-
513 AM AKST Tue Dec 12 2023

.TODAY...Variable wind less than 10 kt. Seas 2 ft. Snow and rain.
.TONIGHT...Variable wind less than 10 kt. Seas 2 ft. Snow. 
.WED...Variable wind less than 10 kt. Seas 2 ft. Snow. 
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.THU...E wind 10 kt. Seas 2 ft. 
.FRI...Variable wind less than 10 kt. Seas 2 ft. 
.SAT...E wind 10 kt. Seas 2 ft.

$$

PKZ721-130415-
Valdez Narrows-
513 AM AKST Tue Dec 12 2023

.TODAY...N wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Rain and snow. 
.TONIGHT...N wind 15 kt becoming variable less than 10 kt after 
midnight. Seas 3 ft. Snow and rain. 
.WED...Variable wind 10 kt. Seas 3 ft. Snow. 
.WED NIGHT...N wind 20 kt. Seas 3 ft. 
.THU...NE wind 20 kt. Seas 3 ft. 
.FRI...NE wind 10 kt. Seas 2 ft. 
.SAT...NE wind 15 kt. Seas 3 ft.

$$

PKZ722-130415-
Valdez Arm-
513 AM AKST Tue Dec 12 2023

.TODAY...NE wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft. Rain and snow. 
.TONIGHT...N wind 15 kt becoming SE after midnight. Seas 3 ft.
Snow  and rain. 
.WED...SE wind 20 kt diminishing to 10 kt in the afternoon. Seas
4  ft. Snow. 
.WED NIGHT...NE wind 15 kt. Seas 3 ft. 
.THU...NE wind 15 kt. Seas 3 ft. 
.FRI...NE wind 10 kt. Seas 2 ft. 
.SAT...NE wind 15 kt. Seas 3 ft.

$$

PKZ723-130415-
Passage Canal-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY TONIGHT...

.TODAY...Variable wind less than 10 kt early becoming W 20 kt.
Gusts to 30 kt near Whittier. Seas 2 ft. Freezing spray. 
.TONIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Gusts to 35 kt near Whittier in the evening. Seas 3 ft. Freezing
spray. Snow. 
.WED...Variable wind less than 10 kt becoming E 10 kt in the
afternoon. Seas 2 ft. Snow. 
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.THU...W wind 15 kt. Seas 2 ft. 
.FRI...NE wind 10 kt. Seas 2 ft. 
.SAT...NE wind 15 kt. Seas 2 ft.

$$

PKZ730-130415-
West of Barren Islands Including Kamishak Bay-
513 AM AKST Tue Dec 12 2023

...STORM WARNING TONIGHT AND WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND WEDNESDAY...

.TODAY...W wind 35 kt. Seas 9 ft. Freezing spray. 
.TONIGHT...W wind 40 kt increasing to 50 kt after midnight. Seas
13 ft. Heavy freezing spray after midnight in Kamishak Bay. 
.WED...W wind 50 kt. Seas 13 ft. Heavy freezing spray in Kamishak
 Bay. 
.WED NIGHT...NW wind 30 kt. Seas 9 ft. 
.THU...NW wind 30 kt. Seas 7 ft. 
.FRI...E wind 20 kt. Seas 5 ft. 
.SAT...E wind 25 kt. Seas 3 ft.

$$

PKZ731-130415-
Barren Islands East-
513 AM AKST Tue Dec 12 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 10 ft. Freezing spray. 
.TONIGHT...NW wind 40 kt. Seas 12 ft. Freezing spray. 
.WED...NW wind 45 kt. Seas 13 ft. Freezing spray. Snow. 
.WED NIGHT...N wind 35 kt. Seas 8 ft. 
.THU...NW wind 35 kt. Seas 8 ft. 
.FRI...S wind 15 kt. Seas 10 ft. 
.SAT...SE wind 30 kt. Seas 11 ft.

$$

PKZ733-130415-
Gore Point to Marmot Island from 15 to 80 NM-
513 AM AKST Tue Dec 12 2023

...GALE WARNING WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 11 ft. Freezing spray. 
.TONIGHT...NW wind 30 kt. Seas 12 ft. Freezing spray. 
.WED...NW wind 35 kt. Seas 13 ft. Freezing spray. Snow. 
.WED NIGHT...NE wind 15 kt. Seas 8 ft. 
.THU...NW wind 30 kt. Seas 12 ft. 
.FRI...S wind 20 kt. Seas 11 ft. 
.SAT...S wind 25 kt. Seas 13 ft.

$$

PKZ732-130415-
Marmot Island to Sitkinak out to 15 NM-
513 AM AKST Tue Dec 12 2023

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...NW wind 25 kt. Seas 7 ft. Freezing spray. 
.TONIGHT...NW wind 35 kt except NW 20 kt N of Dangerous Cape.
Seas 8 ft. Freezing spray. 
.WED...NW wind 40 kt diminishing to 30 kt in the afternoon. N of
Dangerous Cape, N wind 25 kt. Seas 8 ft. Freezing spray. 
.WED NIGHT...NW wind 30 kt. Seas 7 ft. 
.THU...NW wind 30 kt. Seas 7 ft. 
.FRI...SW wind 20 kt. Seas 12 ft. 
.SAT...S wind 25 kt. Seas 14 ft.

$$

PKZ734-130415-
Marmot Island To Sitkinak from 15 to 85 NM-
513 AM AKST Tue Dec 12 2023

...GALE WARNING WEDNESDAY...

.TODAY...NW wind 25 kt. Seas 9 ft. Freezing spray. 
.TONIGHT...W wind 30 kt except NW 20 kt N of Dangerous Cape. Seas
12 ft. Freezing spray. 
.WED...W wind 40 kt. N of Dangerous Cape, SW wind 20 kt becoming
N 25 kt in the afternoon. Seas 13 ft. Freezing spray. Snow. 
.WED NIGHT...N wind 25 kt. Seas 10 ft. 
.THU...NW wind 30 kt. Seas 9 ft. 
.FRI...SW wind 25 kt. Seas 13 ft. 
.SAT...S wind 30 kt. Seas 16 ft.

$$

PKZ736-130415-
Chiniak Bay-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...NW wind 10 kt increasing to 20 kt in the afternoon. Seas
3  ft. 
.TONIGHT...NW wind 20 kt. Gusts to 30 kt. Seas 3 ft. Freezing
spray. 
.WED...N wind 25 kt. Seas 5 ft. Freezing spray. 
.WED NIGHT...NW wind 25 kt. Seas 3 ft. 
.THU...NW wind 20 kt. Seas 3 ft. 
.FRI...SW wind 15 kt. Seas 2 ft. 
.SAT...S wind 20 kt. Seas 4 ft.

$$

PKZ737-130415-
Marmot Bay-
513 AM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY WEDNESDAY...

.TODAY...NW wind 10 kt increasing to 15 kt in the afternoon. Seas
2 ft. 
.TONIGHT...W wind 20 kt. Gusts to 30 kt. Seas 4 ft. Freezing
spray. 
.WED...NW wind 25 kt. Seas 4 ft. Freezing spray. 
.WED NIGHT...NW wind 20 kt. Seas 3 ft. 
.THU...NW wind 20 kt. Seas 3 ft. 
.FRI...S wind 15 kt. Seas 4 ft. 
.SAT...SE wind 20 kt. Seas 7 ft.

$$

PKZ738-130415-
Shelikof Strait-
513 AM AKST Tue Dec 12 2023

...STORM WARNING WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 5 ft. Freezing spray. 
.TONIGHT...W wind 40 kt. Seas 7 ft. Heavy freezing spray after
midnight out of western bays and passes. 
.WED...NW wind 50 kt. Seas 9 ft. Heavy freezing spray of western 
bays and passes. 
.WED NIGHT...NW wind 30 kt. Seas 6 ft. 
.THU...W wind 25 kt. Seas 4 ft. 
.FRI...S wind 15 kt. Seas 4 ft. 
.SAT...SE wind 20 kt. Seas 4 ft.

$$

PKZ742-130415-
Cook Inlet Kalgin Island to Point Bede-
513 AM AKST Tue Dec 12 2023

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

.TODAY...N wind 15 kt. Seas 3 ft. 
.TONIGHT...W wind 25 kt. Seas 4 ft. Freezing spray. 
.WED...NW wind 30 kt. Seas 4 ft building to 6 ft in the
afternoon. Freezing spray. 
.WED NIGHT...N wind 25 kt. Seas 6 ft. 
.THU...N wind 20 kt. Seas 5 ft. 
.FRI...NE wind 15 kt. Seas 5 ft. 
.SAT...NE wind 20 kt. Seas 5 ft.

$$

PKZ740-130415-
Cook Inlet North Kalgin Island-
513 AM AKST Tue Dec 12 2023

.TODAY...N wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft. 
.TONIGHT...N wind 10 kt. Seas 1 ft. Snow. 
.WED...NE wind 15 kt. Seas 3 ft. Snow. 
.WED NIGHT...N wind 10 kt. Seas 3 ft. 
.THU...NE wind 10 kt. Seas 3 ft. 
.FRI...NE wind 15 kt. Seas 4 ft. 
.SAT...N wind 20 kt. Seas 4 ft.

$$

PKZ741-130415-
Kachemak Bay-
513 AM AKST Tue Dec 12 2023

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

.TODAY...N wind 15 kt. Seas 2 ft. 
.TONIGHT...Variable wind 10 kt becoming W 20 kt after midnight.
In the outer bay, W wind 25 kt. Seas 2 ft building to 6 ft after
midnight. Freezing spray. Snow. 
.WED...W wind 20 kt except W 30 kt in the outer bay. Seas 4 ft
except 8 ft in the outer bay. Freezing spray. 
.WED NIGHT...N wind 15 kt. Seas 2 ft. 
.THU...N wind 20 kt. Seas 2 ft. 
.FRI...NE wind 10 kt. Seas 2 ft. 
.SAT...NE wind 15 kt. Seas 3 ft.

$$

049 
FZAK51 PAFC 130033
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
333 PM AKST Tue Dec 12 2023

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.

PKZ197-131345-
333 PM AKST Tue Dec 12 2023
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 967 mb low 195 nm West of Sitka moves inland Tue night. Its 
front wraps over the Gulf through Wed afternoon. A 972 mb low 
forms 65 nm Southeast of Kodiak City and loops to 310 nm South 
of Middleton Island at 999 mb by Thu afternoon. A 994 mb North 
Pacific low moves to 20 nm South of Cape Suckling at 991 mb for 
Thu afternoon. 

$$

PKZ710-131345-
Cape Suckling to Gravel Point out to 15 NM-
333 PM AKST Tue Dec 12 2023

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

.TONIGHT...W wind 20 kt becoming S 25 kt after midnight. Seas 13 ft.
Widespread snow and rain showers.
.WED...SE wind 20 kt. Seas 12 ft. Widespread snow showers.
.WED NIGHT...SE wind 15 kt. Seas 11 ft. Widespread snow showers.
.THU...NE wind 25 kt. Seas 7 ft.
.THU NIGHT...E wind 15 kt. Seas 9 ft.
.FRI...SE wind 20 kt. Seas 12 ft.
.SAT THROUGH SUN...SE wind 30 kt. Seas 12 ft.

$$

PKZ711-131345-
Gravel Point to Cape Cleare out to 15 NM-
333 PM AKST Tue Dec 12 2023

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

.TONIGHT...S wind increasing to 25 kt. Seas 11 ft.
.WED...SE wind 25 kt. Seas 11 ft. Widespread snow showers.
.WED NIGHT...E wind 20 kt. Seas 10 ft. Widespread snow showers.
.THU...N wind 15 kt. Seas 7 ft.
.THU NIGHT...Variable wind 10 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 12 ft.
.SAT THROUGH SUN...S wind 30 kt. Seas 11 ft.

$$

PKZ712-131345-
Cape Suckling to Cape Cleare from 15 to 75 NM-
333 PM AKST Tue Dec 12 2023

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

.TONIGHT...W wind 25 kt. Seas 14 ft. Snow and rain showers.
.WED...S wind 20 kt. Seas 13 ft. Widespread snow showers.
.WED NIGHT...SE wind 20 kt. Seas 12 ft. Snow showers.
.THU...N wind 25 kt. Seas 8 ft.
.THU NIGHT...W wind 15 kt. Seas 12 ft.
.FRI...SW wind 20 kt. Seas 13 ft.
.SAT THROUGH SUN...S wind 30 kt. Seas 12 ft.

$$

PKZ715-131345-
Cape Cleare to Gore Point out to 15 NM-
333 PM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...SW wind 20 kt. Seas 10 ft.
.WED...SE wind 15 kt. Seas 9 ft.
.WED NIGHT...NE wind 15 kt. Seas 7 ft. Snow showers.
.THU AND THU NIGHT...NW wind 15 kt. Seas 6 ft.
.FRI...SE wind 15 kt. Seas 9 ft.
.SAT...SE wind 20 kt. Seas 12 ft.
.SUN...SW wind 20 kt. Seas 9 ft.

$$

PKZ716-131345-
Cape Cleare to Gore Point from 15 to 75 NM-
333 PM AKST Tue Dec 12 2023

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

.TONIGHT...SW wind 20 kt. Seas 12 ft. Freezing spray.
.WED...SW wind 15 kt. Seas 11 ft.
.WED NIGHT...SE wind 15 kt. Seas 8 ft.
.THU...N wind 15 kt. Seas 6 ft.
.THU NIGHT...W wind 15 kt. Seas 9 ft.
.FRI THROUGH SAT...S wind 25 kt. Seas 12 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ714-131345-
Resurrection Bay-
333 PM AKST Tue Dec 12 2023

.TONIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. Snow showers.
.WED...Variable wind 10 kt in the morning becoming variable less
than 10 kt. Seas 2 ft. Snow showers.
.WED NIGHT...Variable wind 10 kt becoming N 15 kt after midnight.
Seas 3 ft. Widespread snow showers.
.THU...N wind 15 kt. Seas 3 ft.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...Variable wind 10 kt. Seas 2 ft.
.SAT...Variable wind 15 kt. Seas 3 ft.
.SUN...N wind 10 kt. Seas 2 ft.

$$

PKZ724-131345-
Northwest Prince William Sound-
333 PM AKST Tue Dec 12 2023

.TONIGHT...NW wind 15 kt becoming S 20 kt after midnight. 
Seas 2 ft building to 4 ft after midnight. Snow showers.
.WED...SE wind 15 kt. Seas 3 ft. Widespread snow showers.
.WED NIGHT...E wind 15 kt becoming NE 10 kt after midnight. 
Seas 3 ft. Widespread snow showers.
.THU AND THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...E wind 20 kt. Seas 4 ft.

$$

PKZ725-131345-
Central and Eastern Prince William Sound-
333 PM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 10 kt becoming S 25 kt after midnight. Seas 2 ft
building to 6 ft after midnight. Widespread snow showers.
.WED...SE wind 20 kt. Seas 4 ft. Widespread snow showers.
.WED NIGHT...E wind 15 kt. Seas 3 ft. Widespread snow showers.
.THU...N wind 15 kt. Seas 3 ft.
.THU NIGHT...NE wind 10 kt. Seas 2 ft.
.FRI...E wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...SE wind 25 kt. Seas 4 ft.

$$

PKZ726-131345-
Southwest Prince William Sound-
333 PM AKST Tue Dec 12 2023

.TONIGHT...W wind 10 kt becoming S 20 kt after midnight. Seas 2 ft
building to 4 ft after midnight. Snow showers.
.WED...SE wind 15 kt. Seas 3 ft. Snow showers.
.WED NIGHT...SE wind 15 kt. Seas 3 ft. Widespread snow showers.
.THU AND THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...E wind 10 kt. Seas 2 ft.
.SAT...E wind 20 kt. Seas 4 ft.
.SUN...S wind 20 kt. Seas 4 ft.

$$

PKZ720-131345-
Port of Valdez-
333 PM AKST Tue Dec 12 2023

.TONIGHT...W wind 10 kt. Seas 2 ft. Widespread snow showers.
.WED...Variable wind less than 10 kt. Seas 2 ft. Widespread snow
showers.
.WED NIGHT...Variable wind less than 10 kt. Seas 2 ft. Widespread
snow showers.
.THU AND THU NIGHT...E wind 10 kt. Seas 2 ft.
.FRI...Variable wind less than 10 kt. Seas 2 ft.
.SAT THROUGH SUN...E wind 10 kt. Seas 2 ft.

$$

PKZ721-131345-
Valdez Narrows-
333 PM AKST Tue Dec 12 2023

.TONIGHT...SW wind 20 kt. Seas 3 ft. Widespread snow showers.
.WED...NE wind 10 kt becoming N 15 kt in the afternoon. Seas
3 ft. Widespread snow showers.
.WED NIGHT...N wind 20 kt. Seas 3 ft. Freezing spray. Widespread
snow showers.
.THU...NE wind 20 kt. Seas 3 ft.
.THU NIGHT...NE wind 15 kt. Seas 3 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.SAT...NE wind 15 kt. Seas 3 ft.
.SUN...Variable wind 15 kt. Seas 3 ft.

$$

PKZ722-131345-
Valdez Arm-
333 PM AKST Tue Dec 12 2023

.TONIGHT...SW wind 15 kt. Seas 3 ft. Widespread snow showers.
.WED...SE wind 20 kt becoming NE 10 kt in the afternoon. Seas 4 ft
subsiding to 2 ft in the afternoon. Widespread snow showers.
.WED NIGHT...NE wind 15 kt. Seas 3 ft. Widespread snow showers.
.THU...NE wind 15 kt. Seas 3 ft.
.THU NIGHT...NE wind 10 kt. Seas 2 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft.

$$

PKZ723-131345-
Passage Canal-
333 PM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt diminishing to 10 kt after midnight. 
Gusts to 35 kt after midnight. Seas 2 ft. Freezing spray. 
Widespread snow showers.
.WED...Variable wind less than 10 kt becoming E 10 kt in the
afternoon. Seas 2 ft. Widespread snow showers.
.WED NIGHT...E wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft. Widespread snow showers.
.THU...W wind 15 kt. Seas 2 ft.
.THU NIGHT...W wind 10 kt. Seas 2 ft.
.FRI...E wind 10 kt. Seas 2 ft.
.SAT...NE wind 15 kt. Seas 2 ft.
.SUN...Variable wind 15 kt. Seas 2 ft.

$$

PKZ730-131345-
West of Barren Islands Including Kamishak Bay-
333 PM AKST Tue Dec 12 2023

...STORM WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY...

.TONIGHT...W wind increasing to 50 kt. Seas 14 ft. 
Heavy freezing spray.
.WED...W wind 45 kt. Seas 14 ft. Heavy freezing spray.
.WED NIGHT...NW wind 35 kt. Seas 12 ft. Freezing spray.
.THU...NW wind 25 kt. Seas 8 ft.
.THU NIGHT...NW wind 20 kt. Seas 7 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.SAT...E wind 25 kt. Seas 3 ft.
.SUN...NW wind 20 kt. Seas 5 ft.

$$

PKZ731-131345-
Barren Islands East-
333 PM AKST Tue Dec 12 2023

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NW wind 45 kt. Seas 12 ft. Freezing spray.
.WED...NW wind 40 kt. Seas 12 ft. Freezing spray. Snow showers.
.WED NIGHT...N wind 35 kt. Seas 10 ft. Freezing spray.
.THU...NW wind 30 kt. Seas 7 ft.
.THU NIGHT...NW wind 25 kt. Seas 7 ft.
.FRI...S wind 15 kt. Seas 10 ft.
.SAT...SE wind 30 kt. Seas 11 ft.
.SUN...W wind 15 kt. Seas 6 ft.

$$

PKZ733-131345-
Gore Point to Marmot Island from 15 to 80 NM-
333 PM AKST Tue Dec 12 2023

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

.TONIGHT...W wind 30 kt. Seas 12 ft. Freezing spray.
.WED...NW wind 30 kt. Seas 11 ft. Freezing spray.
.WED NIGHT...NE wind 20 kt. Seas 8 ft.
.THU...N wind 30 kt. Seas 8 ft.
.THU NIGHT...W wind 30 kt. Seas 8 ft.
.FRI...S wind 20 kt. Seas 11 ft.
.SAT...S wind 25 kt. Seas 13 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ732-131345-
Marmot Island to Sitkinak out to 15 NM-
333 PM AKST Tue Dec 12 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...NW wind 35 kt except NW 25 kt N of Dangerous Cape. 
Seas 8 ft. Freezing spray.
.WED...NW wind 35 kt except N 25 kt N of Dangerous Cape. 
Seas 8 ft. Freezing spray.
.WED NIGHT...NW wind 25 kt. Seas 7 ft. Freezing spray.
.THU...NW wind 25 kt. Seas 6 ft.
.THU NIGHT...W wind 20 kt. Seas 5 ft.
.FRI...SW wind 20 kt. Seas 12 ft.
.SAT...S wind 25 kt. Seas 14 ft.
.SUN...W wind 20 kt. Seas 7 ft.

$$

PKZ734-131345-
Marmot Island To Sitkinak from 15 to 85 NM-
333 PM AKST Tue Dec 12 2023

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...W wind 35 kt except NW 15 kt N of Dangerous Cape. 
Seas 12 ft. Freezing spray.
.WED...W wind 35 kt except N 25 kt N of Dangerous Cape. 
Seas 12 ft. Freezing spray. Snow showers.
.WED NIGHT...NW wind 25 kt except N 30 kt N of Dangerous Cape.
Seas 9 ft. Freezing spray.
.THU...NW wind 30 kt. Seas 8 ft.
.THU NIGHT...W wind 20 kt. Seas 6 ft.
.FRI...SW wind 25 kt. Seas 13 ft.
.SAT...S wind 30 kt. Seas 16 ft.
.SUN...W wind 30 kt. Seas 10 ft.

$$

PKZ736-131345-
Chiniak Bay-
333 PM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...NW wind 15 kt increasing to 25 kt after midnight. 
Gusts to 35 kt after midnight. Seas building to 4 ft. 
.WED...NW wind 25 kt diminishing to 15 kt in the afternoon. 
Seas 4 ft subsiding. Freezing spray.
.WED NIGHT...NW wind 20 kt. Seas 3 ft. Freezing spray.
.THU...NW wind 20 kt. Seas 2 ft.
.THU NIGHT...W wind 10 kt. Seas 2 ft.
.FRI...SW wind 15 kt. Seas 2 ft.
.SAT...S wind 20 kt. Seas 4 ft.
.SUN...W wind 15 kt. Seas 2 ft.

$$

PKZ737-131345-
Marmot Bay-
333 PM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...W wind increasing to 25 kt. Seas building to 5 ft.
Freezing spray. 
.WED...NW wind 25 kt diminishing to 15 kt in the afternoon. 
Seas 5 ft subsiding. Freezing spray.
.WED NIGHT...NW wind 20 kt. Seas 2 ft. Freezing spray.
.THU...NW wind 20 kt. Seas 2 ft.
.THU NIGHT...W wind 10 kt. Seas 2 ft.
.FRI...SW wind 15 kt. Seas 4 ft.
.SAT...SE wind 20 kt. Seas 7 ft.
.SUN...W wind 15 kt. Seas 2 ft.

$$

PKZ738-131345-
Shelikof Strait-
333 PM AKST Tue Dec 12 2023

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

.TONIGHT...NW wind 40 kt. Gusts to 55 kt out of bays and passes. 
Seas 8 ft. Freezing spray.
.WED...NW wind 40 kt. Gusts to 55 kt out of bays and passes. 
Seas 10 ft. Freezing spray.
.WED NIGHT...NW wind 35 kt diminishing to 25 kt after midnight. 
Seas 7 ft. Freezing spray.
.THU...NW wind 20 kt. Seas 4 ft.
.THU NIGHT...W wind 15 kt. Seas 4 ft.
.FRI...S wind 15 kt. Seas 4 ft.
.SAT...SE wind 20 kt. Seas 4 ft.
.SUN...W wind 20 kt. Seas 4 ft.

$$

PKZ742-131345-
Cook Inlet Kalgin Island to Point Bede-
333 PM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 20 kt, except W 30 kt S of Anchor Point. 
Seas 4 ft except 10 ft S of Anchor Point. Freezing spray.
.WED...N wind 20 kt. Seas 5 ft. Freezing spray.
.WED NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray.
.THU...N wind 20 kt. Seas 4 ft.
.THU NIGHT...N wind 10 kt. Seas 3 ft.
.FRI...NE wind 15 kt. Seas 5 ft.
.SAT...NE wind 20 kt. Seas 5 ft.
.SUN...N wind 20 kt. Seas 3 ft.

$$

PKZ740-131345-
Cook Inlet North of Kalgin Island-
333 PM AKST Tue Dec 12 2023

.TONIGHT...N wind to 15 kt. Seas 3 ft.
.WED AND WED NIGHT...N wind 15 kt. Seas 4 ft.
.THU AND THU NIGHT...NE wind 10 kt. Seas 3 ft.
.FRI...NE wind 15 kt. Seas 4 ft.
.SAT...N wind 20 kt. Seas 4 ft.
.SUN...E wind 20 kt. Seas 3 ft.

$$

PKZ741-131345-
Kachemak Bay-
333 PM AKST Tue Dec 12 2023

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Seas building to 4 ft inner bay and to 
8 ft outer bay. Freezing spray. Snow showers.
.WED...W wind 20 kt early, becoming N 15 kt. Inner bay, Seas 4 ft 
subsiding to 2 ft in the afternoon. Outer bay, Seas 8 ft subsiding 
to 4 ft in the afternoon. Freezing spray. 
.WED NIGHT...N wind 15 kt. Seas 2 ft. Freezing spray.
.THU...N wind 20 kt. Seas 2 ft.
.THU NIGHT...N wind 10 kt. Seas 2 ft.
.FRI...NE wind 10 kt. Seas 2 ft.
.SAT...NE wind 15 kt. Seas 3 ft.
.SUN...SW wind 15 kt. Seas 2 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
442 PM AKST Mon Dec 11 2023

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

Bimodal weather exists on either side of the Prince William Sound
this afternoon, and will remain that way through Wednesday morning.
The high amplitude trough remains over Southcentral, with the
focus of the atmospheric river and warm sector of the trough over
the Central Chugach and Copper Valley. Meanwhile, on the western
side of the Sound, cold air advection and some instability has
lead to continued showers from the Kenai P. north into the Mat-Su.
A warm nose left over from last nights strong cross-barrier flow
has lead to some freezing rain and sleet over the western Kenai
and Anchorage, but this threat should end quickly this evening as
colder air returns. Expect showers to continue overnight for
these areas, with snow accumulation around a half inch possible.

The main focus of this forecast package in the short term is from
the Valdez area north into the Copper Valley. Low level warm air
has intruded well north into the Valley with southerly winds. This
has risen snow levels to approximately 1500 ft today, causing
difficult travel in the southern basin due to a combination of wet
snow, slush and rain falling onto frozen roadways. These snow
levels will slowly drop overnight as cold air moves in from the
west, returning conditions to snow in Valdez later this evening,
and to Chitina Tuesday morning. Precipitation rates will also
increase overnight again, resulting in heavy snow for the Copper
Valley and Valdez as a surface low moves south of Cordova. Models
finally decreased in their spread in low track, providing higher
confidence that a band of snow will also develop over the central
Copper Valley, extending north to Paxson. As the low moves inland,
precipitation rates will decrease Tuesday afternoon.

For many, the weather may seem like one long duration storm, but
the past 3-5 days have been the combination of many low pressure
systems moving into the Gulf in rapid succession. To continue
that theme, yet another low will in the southeastern Gulf Tuesday
afternoon will pivot north and west along the coast into the
Sound on Wednesday. This will bring another round of snow to
coastal areas, and provide higher chances for more light snow from
the western Kenai north to Anchorage and the Mat-Su. This system
is occluded, and should be comfortably snow.

-Jones

&&

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

The low that brought blizzard conditions to the Bristol Bay region
yesterday has become elongated across the Western Alaska Range
this evening. Moisture wrapping around the back side of the low
will contributed to continued light snow across portions of
Bristol Bay and the Lower Kuskokwim Valley tonight as the low
slowly pushes into Southcentral Alaska. Light snow will hold on
longest in the Lower Kuskokwim Valley, but gradually tapers off
through Tuesday as northerly flow brings colder, drier air into
the region.

The continuous northerly flow will have multiple effects. First,
northerly winds gusting to 40 mph will continue to lead to
blowing/drifting snow in the Kuskokwim Delta, despite no new
snowfall from Bethel west. Second, the cold air streaming across
the relatively warmer waters of the Bering Sea will continue to
produce snow showers for the Pribilof Islands, the Alaska
Peninsula, and the eastern Aleutian Islands. This will lead to
intermittent reductions in visibility as low as one quarter mile.
There is a lack of strong shortwaves which would lead to an
enhancement to steady snow and more prolonged periods of
visibility less than one mile. Finally, temperatures across
Southwest Alaska, broadly in the single digits above zero will
drop into the single digits below zero beginning Tuesday night
through at least Thursday. Combined with northerly winds across
the area, wind chills will hover between -20 and -30F.

Meanwhile out west, a compact low along a front moving into the
western Bering Sea this evening brings rain and a rain/snow mix to
the western Aleutians tonight. The low produces gales through
Tuesday morning until it weakens and dips south into the Pacific.

By Tuesday night, a storm force low tracks over the far western
Bering, pushing its front to the central Aleutians/Bering by
Wednesday night. This will bring a wedge of warm air across the
Aleutians, along with a changeover from snow back to rain. As the
front pushes east, it erodes high pressure over the central Bering
which has been aiding in drawing colder air southward. As a
result, northerly flow begins to weaken and winds diminish over
Southwest Alaska and the eastern Bering. This will reduce the
intensity of snow showers along the Alaska Peninsula and eastern
Aleutians, and reduce wind in the Kuskokwim Delta, which will
allow visibility to improve in these regions on Wednesday.

For Thursday, there is increasing uncertainty with the front
moving into the Pribilof Islands. Strong southeasterly winds may
combine with snow falling initially with the front to
significantly reduce visibility. However, a southeasterly wind
direction does not typically favor blowing snow with visibilities
of one half mile or less, and precipitation type may eventually
turn over to rain. With warming temperatures on Thursday, this
threat currently appears unlikely.

CQ

&&

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

The long-term forecast continues to feature general agreement on
the continuation of the active pattern Friday through at least
Monday. For Friday, a new deep upper trough drops into the
western/central Bering Sea while a shortwave ridge moves over the
eastern Bering and Southwest Alaska. The upper low that provided
Southcentral Alaska with very active weather in the short-term
continues to move eastward towards Southeast Alaska as the
shortwave ridge builds over Southcentral. However, any break in
weather associated with the ridge will not last long. Later on
Friday and into Saturday, the deep trough in the Bering moves
eastward and puts all of mainland Southern Alaska back in moist
southerly to southwesterly flow. A front over then central and
eastern Bering moves to the coast of Southwest later in the day on
Friday and eventually to Southcentral on Saturday. There is lots
of uncertainty exactly where a secondary low will spin up along
the front in the Gulf on Saturday. All ensemble and deterministic
guidance all show different solutions. However, generally
speaking, coastal Southcentral chances for moderate to heavy
precipitation are average. Southwest flow in the middle to upper
levels continues for Monday as additional shortwaves lift
northward through the Gulf and into Southcentral. The Bering Sea
and Aleutians stay active Saturday through Monday as shortwaves
pivot around the main trough. An additional low coming from
Kamchatka looks to send its gale-force front from the western
Aleutians Sunday afternoon to the central Aleutians by Monday
morning. This will spread gusty winds and precipitation across the
Aleutian Chain early next week.

&&

.AVIATION...

PANC...Expect a showery weather regime in Cook Inlet this evening
through Tuesday morning. There could be a rain/snow/Ice Pellets
shower at almost anytime, causing a brief reduction in ceiling/vis.
However, the most likely time to see snow showers will be between
06Z and 15Z out ahead of an upper low/trough lifting northward up
Cook Inlet. Mixed precipitation showers will transition to all snow
showers later this evening. MVFR conditions are most likely in
snow showers, but conditions could briefly drop as low as IFR.
Conditions will improve during the morning hours on Tuesday, with
dry conditions and VFR ceilings likely until snow with the next
storm arrives sometime Tuesday night.

As for winds, southerly winds will prevail this evening. They
will mostly be less than 10 kts, but there could be a few gusts as
showers move through. Winds will lighten and shift around to
northerly Tuesday morning in response to a low moving into the
Gulf.

&&