Alert archive / Alaska / Heavy Freezing Spray Warnings in 2021

Heavy Freezing Spray Warning 71, NWS Anchorage, AK

February 18, 2021

NWS Anchorage, AK issued this heavy freezing spray warning at Feb 18, 2021, 3:40 PM AKST. It was in force for 60 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 18, 2021, 3:40 PM AKST (00:40 UTC)
Expired
Feb 21, 2021, 4:00 AM AKST
In force
60 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

097 
FZAK51 PAFC 190040
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
340 PM AKST Thu Feb 18 2021

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.

PKZ197-191400-
340 PM AKST Thu Feb 18 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 963 mb low 165 nm west of Sitka moves to 170 nm north of Sitka 
at 987 mb and inland for Fri afternoon. A front enters the 
Southwest Gulf Fri night and stretches across the Central Gulf 
through Sat afternoon.

$$

PKZ119-191400-
Cape Suckling to Cape Cleare-
340 PM AKST Thu Feb 18 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 16 ft.
.FRI...W wind 30 kt. Seas 13 ft.
.FRI NIGHT...NW wind 25 kt becoming variable 10 kt after midnight
except N 20 kt near the Copper River Delta. Seas 11 ft. Freezing 
Spray near the Copper River Delta.
.SAT...E wind 25 kt. Seas 7 ft.
.SAT NIGHT...NE wind 30 kt. Seas 11 ft.
.SUN THROUGH MON...NW wind 25 kt. Seas 18 ft.
.TUE...SW wind 20 kt. Seas 10 ft.

$$

PKZ120-191400-
Cape Cleare to Gore Point-
340 PM AKST Thu Feb 18 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...NW wind 20 kt increasing to 35 kt by midnight. Seas 15 
ft. Freezing spray.
.FRI...NW wind 40 kt. Seas 14 ft. Freezing spray.
.FRI NIGHT...NW wind 30 kt becoming NE 15 kt after midnight. Seas
10 ft. Freezing spray.
.SAT...NE wind 30 kt. Seas 7 ft.
.SAT NIGHT...NE wind 35 kt. Seas 12 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 15 ft.
.TUE...SW wind 25 kt. Seas 10 ft.

$$

PKZ121-191400-
Resurrection Bay-
340 PM AKST Thu Feb 18 2021

...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY NIGHT...
...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 6 ft. Heavy freezing spray.
.FRI...N wind 30 kt. Seas 6 ft. Heavy freezing spray.
.FRI NIGHT...N wind 30 kt diminishing to 15 kt after midnight. Seas 
6 ft subsiding to 3 ft after midnight. Heavy freezing spray.
.SAT...N wind 10 kt. Seas 2 ft.
.SAT NIGHT...N wind 15 kt. Seas 3 ft.
.SUN THROUGH TUE...N wind 10 kt. Seas 2 ft.

$$

PKZ125-191400-
Prince William Sound-
340 PM AKST Thu Feb 18 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...NW wind 35 kt. Seas 9 ft. Freezing spray.
.FRI...NW wind 40 kt. Seas 9 ft. Freezing spray.
.FRI NIGHT...NW wind 30 kt becoming N 15 kt after midnight. Seas 7 
ft subsiding to 2 ft after midnight. Freezing spray.
.SAT AND SAT NIGHT...N wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...N wind 10 kt. Seas 2 ft.
.TUE...NE wind 15 kt. Seas 3 ft.

$$

PKZ126-191400-
Port Valdez-
340 PM AKST Thu Feb 18 2021

.TONIGHT...NE wind 10 kt increasing to 20 kt after midnight. Seas 4 
ft. Freezing spray.
.FRI...NE wind 20 kt. Seas 4 ft. Freezing spray.
.FRI NIGHT...NE wind 15 kt diminishing to 10 kt after midnight.
Seas 3 ft. Freezing spray.
.SAT AND SAT NIGHT...NE wind 10 kt. Seas 2 ft.
.SUN...NE wind 10 kt. Seas 2 ft.
.MON THROUGH TUE...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-191400-
Valdez Narrows-
340 PM AKST Thu Feb 18 2021

...HEAVY FREEZING SPRAY WARNING FRIDAY NIGHT...
...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray.
.FRI...NE wind 30 kt. Seas 3 ft. Freezing spray.
.FRI NIGHT...NE wind 25 kt. Seas 3 ft. Heavy freezing spray.
.SAT...NE wind 20 kt. Seas 3 ft.
.SAT NIGHT...NE wind 15 kt. Seas 3 ft.
.SUN...NE wind 15 kt. Seas 3 ft.
.MON THROUGH TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ128-191400-
Valdez Arm-
340 PM AKST Thu Feb 18 2021

.TONIGHT...NE wind 10 kt increasing to 20 kt after midnight. Seas 2
ft building to 4 ft after midnight.
.FRI...NE wind 20 kt. Seas 4 ft.
.FRI NIGHT...NE wind 20 kt decreasing to 10 kt after midnight. Seas 
4 ft subsiding to 2 ft after midnight. Freezing spray.
.SAT AND SAT NIGHT...NE wind 10 kt. Seas 2 ft.
.SUN THROUGH TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-191400-
Passage Canal-
340 PM AKST Thu Feb 18 2021

...HEAVY FREEZING SPRAY WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...W wind 25 kt. Gusts to 40 kt near Whittier after 
midnight. Seas 3 ft. Freezing spray.
.FRI...W wind 25 kt. Gusts to 40 kt near Whittier. Seas 3 ft. Heavy 
freezing spray.
.FRI NIGHT...W wind 20 kt decreasing to 10 kt after midnight. Gusts
to 40 kt near Whittier in the evening. Seas 2 ft. Heavy freezing 
spray.
.SAT...W wind 10 kt. Seas 2 ft.
.SAT NIGHT...W wind 10 kt. Seas 2 ft.
.SUN...W wind 10 kt. Seas 2 ft.
.MON...W wind 10 kt. Seas 2 ft.
.TUE...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-191400-
West of Barren Islands including Kamishak Bay-
340 PM AKST Thu Feb 18 2021

...STORM WARNING THROUGH FRIDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...W wind 40 kt increasing to 50 kt after midnight. Seas
15 ft building to 24 ft after midnight. Heavy freezing spray.
.FRI...W wind 50 kt becoming NW 40 kt in the afternoon. Seas 24 ft
subsiding to 15 ft by afternoon. Heavy freezing spray.
.FRI NIGHT...N wind 30 kt. Seas 13 ft. Heavy freezing spray.
.SAT...NE wind 30 kt. Seas 12 ft.
.SAT NIGHT...N wind 35 kt. Seas 13 ft.
.SUN THROUGH MON...W wind 35 kt. Seas 10 ft.
.TUE...NE wind 15 kt. Seas 3 ft.

$$

PKZ131-191400-
Barren Islands East-
340 PM AKST Thu Feb 18 2021

...GALE WARNING THROUGH FRIDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY...

.TONIGHT...NW wind 35 kt increasing to 45 kt after midnight. Seas
16 ft. Heavy freezing spray near the Barren Islands.
.FRI...NW wind 45 kt decreasing to 35 kt by afternoon. Seas 17 ft
subsiding to 13 ft by afternoon. Heavy freezing spray near the 
Barren Islands.
.FRI NIGHT...NW wind 30 kt becoming N 20 kt after midnight. Seas
11 ft subsiding to 6 ft after midnight. Freezing spray.
.SAT...NE wind 35 kt. Seas 8 ft.
.SAT NIGHT...NE wind 35 kt. Seas 16 ft.
.SUN THROUGH MON...W wind 35 kt. Seas 16 ft.
.TUE...SW wind 25 kt. Seas 10 ft.

$$

PKZ132-191400-
Marmot Island to Sitkinak-
340 PM AKST Thu Feb 18 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...W wind 35 kt. Seas 13 ft. Freezing spray.
.FRI...W wind 35 kt decreasing to 25 kt by afternoon. Seas 14 ft
subsiding to 10 ft by afternoon. Freezing spray.
.FRI NIGHT...W wind 15 kt becoming NE 30 kt after midnight. Seas
7 ft. Snow and rain.
.SAT...NE wind 30 kt. Seas 10 ft.
.SAT NIGHT...NW wind 35 kt. Seas 21 ft.
.SUN...W wind 35 kt. Seas 20 ft.
.MON...W wind 35 kt. Seas 15 ft.
.TUE...SW wind 25 kt. Seas 12 ft.

$$

PKZ136-191400-
Chiniak Bay-
340 PM AKST Thu Feb 18 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...W wind 25 kt. Seas 5 ft. Freezing spray.
.FRI...W wind 25 kt decreasing to 15 kt by afternoon. Seas 5 ft
subsiding to 3 ft by afternoon. Freezing spray.
.FRI NIGHT...Variable wind less than 10 kt becoming NE 15 kt after
midnight. Seas 3 ft. Freezing spray.
.SAT...NE wind 25 kt. Seas 7 ft.
.SAT NIGHT...N wind 30 kt. Seas 9 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 3 ft.
.TUE...SW wind 15 kt. Seas 2 ft.

$$

PKZ137-191400-
Marmot Bay-
340 PM AKST Thu Feb 18 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...NW wind 25 kt becoming W 35 kt after midnight. Seas 4
ft building to 8 ft after midnight. Freezing spray.
.FRI...W wind 35 kt decreasing to 20 kt by afternoon. Seas 8 ft 
subsiding to 3 ft in the afternoon. Freezing spray.
.FRI NIGHT...NW wind 10 kt. Seas 2 ft.
.SAT...NE wind 25 kt. Seas 9 ft.
.SAT NIGHT...N wind 30 kt. Seas 11 ft.
.SUN THROUGH MON...W wind 25 kt. Seas 6 ft.
.TUE...S wind 15 kt. Seas 2 ft.

$$

PKZ138-191400-
Shelikof Strait-
340 PM AKST Thu Feb 18 2021

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

.TONIGHT...NW wind 35 kt. Seas 10 ft building to 15 ft by midnight. 
Heavy freezing spray.
.FRI...W wind 35 kt decreasing to 25 kt by afternoon. Seas 15 ft 
subsiding to 10 ft by afternoon. Heavy freezing spray.
.FRI NIGHT...Variable wind up to 15 kt becoming NE 30 kt after 
midnight. Seas 3 ft building to 12 ft after midnight. Freezing spray.
.SAT AND SAT NIGHT...N wind 40 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 6 ft.
.MON...W wind 25 kt. Seas 6 ft.
.TUE...S wind 20 kt. Seas 5 ft.

$$

PKZ139-191400-
Cook Inlet Kalgin Island to Point Bede-
340 PM AKST Thu Feb 18 2021

...HEAVY FREEZING SPRAY WARNING THROUGH FRIDAY NIGHT...
...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...W wind 20 kt becoming NW 30 kt after midnight. Seas 5 ft
building to 8 ft after midnight. Heavy freezing spray.
.FRI...N wind 25 kt becoming NE 10 kt in the afternoon. Seas 8 ft 
subsiding to 3 ft in the afternoon. Heavy freezing spray.
.FRI NIGHT...NE wind 10 kt increasing to 30 kt after midnight. Seas 
5 ft building to 13 ft after midnight. Heavy freezing spray.
.SAT AND SAT NIGHT...NE wind 30 kt. Seas 11 ft.
.SUN THROUGH MON...NW wind 20 kt. Seas 5 ft.
.TUE...N wind 15 kt. Seas 3 ft.

$$

PKZ140-191400-
Cook Inlet North of Kalgin Island-
340 PM AKST Thu Feb 18 2021

.TONIGHT...NW wind 10 kt becoming NE 15 kt after midnight.
.FRI...NE wind 15 kt diminishing to 10 kt in the afternoon.
.FRI NIGHT...Variable wind less than 10 kt becoming NE 10 kt after
midnight.
.SAT...NE wind 10 kt.
.SAT NIGHT...NE wind 15 kt.
.SUN THROUGH MON...NE wind 10 kt.
.TUE...N wind 15 kt.

$$

PKZ141-191400-
Kachemak Bay-
340 PM AKST Thu Feb 18 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 15 kt increasing to 25 kt after midnight. Seas
6 ft. Freezing spray.
.FRI...N wind 15 kt. Seas 3 ft. Freezing spray.
.FRI NIGHT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.SAT...N wind 15 kt. Seas 2 ft.
.SAT NIGHT...N wind 20 kt. Seas 2 ft.
.SUN THROUGH MON...NW wind 15 kt. Seas 3 ft.
.TUE...Variable wind less than 10 kt. Seas 2 ft.

$$
6 follow-up statements
280 
FZAK51 PAFC 191313
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
413 AM AKST Fri Feb 19 2021

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.

PKZ197-200145-
413 AM AKST Fri Feb 19 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...A 963 mb low 165 nm west of Sitka moves to 170 nm north
of Sitka at 987 mb and inland for Fri afternoon. A front enters the 
Southwest Gulf Fri night and stretches across the Central Gulf 
through Sat afternoon.

$$

PKZ119-200145-
Cape Suckling to Cape Cleare-
413 AM AKST Fri Feb 19 2021

...GALE WARNING TODAY...

.TODAY...NW wind increasing to 35 kt. Seas 15 ft.
.TONIGHT...NW wind 30 kt becoming N 15 kt after midnight. Seas
12 ft.
.SAT...E wind 25 kt. Seas 7 ft. Freezing spray. Snow.
.SAT NIGHT...NE wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 19 ft.
.TUE...SW wind 20 kt. Seas 11 ft.

$$

PKZ120-200145-
Cape Cleare to Gore Point-
413 AM AKST Fri Feb 19 2021

...GALE WARNING TODAY...

.TODAY...NW wind 40 kt. Seas 15 ft. Freezing spray.
.TONIGHT...NW wind 30 kt becoming NE 20 kt after midnight. Seas
10 ft. Freezing spray.
.SAT...NE wind 25 kt. Seas 6 ft. Freezing spray.
.SAT NIGHT...NE wind 35 kt. Seas 11 ft.
.SUN...W wind 30 kt. Seas 17 ft.
.MON...W wind 35 kt. Seas 16 ft.
.TUE...SW wind 25 kt. Seas 10 ft.

$$

PKZ121-200145-
Resurrection Bay-
413 AM AKST Fri Feb 19 2021

...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY...
...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...N wind 30 kt. Seas 6 ft. Heavy freezing spray.
.TONIGHT...N wind 30 kt diminishing to 20 kt after midnight. Seas
6 ft. Heavy freezing spray.
.SAT...N wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft. Heavy freezing spray.
.SAT NIGHT...N wind 20 kt. Seas 4 ft.
.SUN THROUGH MON...N wind 20 kt. Seas 4 ft.
.TUE...N wind 10 kt. Seas 2 ft.

$$

PKZ125-200145-
Prince William Sound-
413 AM AKST Fri Feb 19 2021

...GALE WARNING TODAY...

.TODAY...W wind 20 kt early becoming NW wind 45 kt. Seas 4 ft early
building to 10 ft. Freezing spray.
.TONIGHT...NW wind 30 kt becoming N 20 kt after midnight. Seas 6
ft subsiding to 4 ft after midnight. Freezing spray.
.SAT...NE wind 20 kt. Seas 3 ft. Freezing spray.
.SAT NIGHT...N wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...N wind 10 kt. Seas 2 ft.
.TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ126-200145-
Port Valdez-
413 AM AKST Fri Feb 19 2021

.TODAY...NE wind 20 kt. Gusts to 35 kt developing. Seas 4 ft. 
Freezing spray.
.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. Seas
3 ft. Freezing spray.
.SAT...E wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.SAT NIGHT...NE wind 15 kt. Seas 3 ft.
.SUN...E wind 15 kt. Seas 2 ft.
.MON...E wind 10 kt. Seas 2 ft.
.TUE...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-200145-
Valdez Narrows-
413 AM AKST Fri Feb 19 2021

...HEAVY FREEZING SPRAY WARNING TONIGHT...
...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...Light winds early becoming NE wind 30 kt. Seas 3 ft. 
Freezing spray.
.TONIGHT...NE wind 30 kt. Seas 3 ft. Heavy freezing spray.
.SAT...NE wind 30 kt. Seas 3 ft. Freezing spray.
.SAT NIGHT...NE wind 25 kt. Seas 3 ft.
.SUN THROUGH MON...NE wind 20 kt. Seas 3 ft.
.TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ128-200145-
Valdez Arm-
413 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...Light winds early becoming NE wind 25 kt. Seas building to 
5 ft. Freezing spray.
.TONIGHT...NE wind 25 kt. Seas 5 ft. Freezing spray.
.SAT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.SAT NIGHT...NE wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...NE wind 15 kt. Seas 3 ft.
.TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-200145-
Passage Canal-
413 AM AKST Fri Feb 19 2021

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

.TODAY...W wind 35 kt. Gusts to 45 kt near Whittier. Seas 5 ft. 
Heavy freezing spray.
.TONIGHT...W wind 30 kt. Gusts to 40 kt near Whittier in the
evening. Seas 5 ft. Heavy freezing spray.
.SAT...W wind 10 kt. Seas 2 ft.
.SAT NIGHT...W wind 15 kt. Seas 2 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 3 ft.
.TUE...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-200145-
West of Barren Islands including Kamishak Bay-
413 AM AKST Fri Feb 19 2021

...STORM WARNING TODAY...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY...

.TODAY...W wind 50 kt becoming NW 40 kt in the afternoon. Seas 22
ft subsiding to 16 ft in the afternoon. Heavy freezing spray.
.TONIGHT...NE wind 30 kt. Seas 6 ft building to 12 ft after
midnight. Heavy freezing spray.
.SAT...NE wind 35 kt. Seas 14 ft. Heavy freezing spray.
.SAT NIGHT...NE wind 35 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 9 ft.
.MON...W wind 35 kt. Seas 9 ft.
.TUE...E wind 15 kt. Seas 3 ft.

$$

PKZ131-200145-
Barren Islands East-
413 AM AKST Fri Feb 19 2021

...STORM WARNING TODAY...

.TODAY...NW wind 50 kt diminishing to 35 kt in the afternoon. Seas 
17 ft. Freezing spray.
.TONIGHT...NW wind 25 kt becoming NE 15 kt after midnight. Seas
10 ft subsiding to 5 ft after midnight. Freezing spray.
.SAT...NE wind 30 kt. Seas 7 ft. Freezing spray.
.SAT NIGHT...NE wind 35 kt. Seas 12 ft.
.SUN THROUGH MON...W wind 35 kt. Seas 16 ft.
.TUE...S wind 25 kt. Seas 10 ft.

$$

PKZ132-200145-
Marmot Island to Sitkinak-
413 AM AKST Fri Feb 19 2021

...GALE WARNING TODAY...

.TODAY...W wind 35 kt diminishing to 25 kt in the afternoon. Seas
13 ft. Freezing spray.
.TONIGHT...S wind 20 kt becoming E 30 kt after midnight. Seas 7
ft. Snow and rain.
.SAT...NE wind 30 kt. Seas 10 ft. Rain showers with snow.
.SAT NIGHT...NW wind 30 kt. Seas 22 ft.
.SUN...W wind 30 kt. Seas 21 ft.
.MON...W wind 30 kt. Seas 15 ft.
.TUE...SW wind 25 kt. Seas 13 ft.

$$

PKZ136-200145-
Chiniak Bay-
413 AM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 30 kt becoming SW 20 kt in the afternoon. Seas
4 ft. Freezing spray.
.TONIGHT...N wind 10 kt becoming NE 15 kt after midnight. Seas 3
ft. Freezing spray. Snow.
.SAT...N wind 20 kt. Seas 3 ft building to 6 ft in the afternoon.
Freezing spray. Snow.
.SAT NIGHT...N wind 30 kt. Seas 10 ft.
.SUN...W wind 20 kt. Seas 3 ft.
.MON...W wind 25 kt. Seas 4 ft.
.TUE...S wind 15 kt. Seas 2 ft.

$$

PKZ137-200145-
Marmot Bay-
413 AM AKST Fri Feb 19 2021

...GALE WARNING TODAY...

.TODAY...W wind 35 kt diminishing to 25 kt in the afternoon. Seas
6 ft subsiding to 3 ft in the afternoon. Freezing spray.
.TONIGHT...N wind 10 kt increasing to 15 kt after midnight. Seas
4 ft.
.SAT...NE wind 20 kt. Seas 3 ft building to 6 ft in the afternoon.
Snow.
.SAT NIGHT...N wind 30 kt. Seas 11 ft.
.SUN...W wind 25 kt. Seas 6 ft.
.MON...W wind 30 kt. Seas 6 ft.
.TUE...S wind 15 kt. Seas 3 ft.

$$

PKZ138-200145-
Shelikof Strait-
413 AM AKST Fri Feb 19 2021

...GALE WARNING TODAY AND SATURDAY...

.TODAY...W wind 35 kt diminishing to 25 kt in the afternoon. Gusts to
60 kt out of western bays and passes through the morning. Seas 10 ft
subsiding to 6 ft in the afternoon. Freezing spray.
.TONIGHT...NE wind 20 kt increasing to 30 kt after midnight. Seas
5 ft building to 12 ft after midnight. Freezing spray.
.SAT...NE wind 35 kt. Seas 13 ft. Freezing spray. Snow showers.
.SAT NIGHT...N wind 30 kt. Seas 13 ft.
.SUN THROUGH MON...W wind 25 kt. Seas 6 ft.
.TUE...S wind 20 kt. Seas 4 ft.

$$

PKZ139-200145-
Cook Inlet Kalgin Island to Point Bede-
413 AM AKST Fri Feb 19 2021

...GALE WARNING SATURDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY...

.TODAY...N wind 25 kt becoming NE 10 kt in the afternoon. Seas 7
ft subsiding to 3 ft in the afternoon. Heavy freezing spray.
.TONIGHT...NE wind 30 kt. Seas 5 ft building to 11 ft after
midnight. Heavy freezing spray.
.SAT...NE wind 35 kt. Seas 12 ft. Heavy freezing spray.
.SAT NIGHT...NE wind 30 kt. Seas 12 ft.
.SUN...N wind 15 kt. Seas 3 ft.
.MON...NW wind 20 kt. Seas 4 ft.
.TUE...NE wind 15 kt. Seas 3 ft.

$$

PKZ140-200145-
Cook Inlet North of Kalgin Island-
413 AM AKST Fri Feb 19 2021

.TODAY...NE wind 15 kt in the morning becoming variable less than
10 kt.
.TONIGHT...NE wind 10 kt increasing to 15 kt after midnight.
.SAT...NE wind 15 kt diminishing to 10 kt in the afternoon.
.SAT NIGHT...NE wind 10 kt.
.SUN...Variable wind less than 10 kt.
.MON...NE wind 10 kt.
.TUE...N wind 15 kt.

$$

PKZ141-200145-
Kachemak Bay-
413 AM AKST Fri Feb 19 2021

...HEAVY FREEZING SPRAY WARNING SATURDAY...
...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 25 kt early becoming N wind 20 kt. Gusts to 35 kt. Seas
12 ft early subsiding to 3 ft...highest near the Inlet. Freezing 
spray.
.TONIGHT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.SAT...NE wind 15 kt. Seas 3 ft. Heavy freezing spray.
.SAT NIGHT...N wind 20 kt. Seas 2 ft.
.SUN...W wind 10 kt. Seas 2 ft.
.MON...W wind 15 kt. Seas 4 ft.
.TUE...NE wind 10 kt. Seas 2 ft.

$$
522 
FZAK51 PAFC 200036
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
336 PM AKST Fri Feb 19 2021

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.

PKZ197-201315-
336 PM AKST Fri Feb 19 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 983 mb low over Unimak Pass moves along the front to 190 nm 
Southwest of Yakutat at 979 mb and dissipates Sat afternoon. 
A 971 mb low 80 nm South of Chignik Sat afternoon moves along 
the front to 160 nm West of Yakutat at 973 mb by Sun afternoon. 
Its front stretches across the Gulf through Sun afternoon.

$$

PKZ119-201315-
Cape Suckling to Cape Cleare-
336 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 30 kt becoming NE 15 kt after midnight. 
Seas 12 ft. Freezing spray near the Copper River Delta.
.SAT...E wind 25 kt. Seas 7 ft. Freezing spray near the 
Copper River Delta.
.SAT NIGHT...NE wind 30 kt. Seas 11 ft. Freezing spray 
near the Copper River Delta.
.SUN AND SUN NIGHT...W wind 30 kt. Seas 19 ft.
.MON...NW wind 30 kt. Seas 18 ft.
.TUE...SW wind 20 kt. Seas 11 ft.
.WED...E wind 25 kt. Seas 11 ft.

$$

PKZ120-201315-
Cape Cleare to Gore Point-
336 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 30 kt becoming NE 15 kt after midnight. Seas
10 ft subsiding to 6 ft after midnight. Freezing spray.
.SAT...NE wind 30 kt. Seas 7 ft. Freezing spray.
.SAT NIGHT...NE wind 30 kt. Seas 8 ft building to 13 ft after
midnight. Rain.
.SUN...NW wind 30 kt. Seas 16 ft.
.SUN NIGHT...W wind 40 kt. Seas 16 ft.
.MON...W wind 35 kt. Seas 17 ft.
.TUE...SW wind 25 kt. Seas 10 ft.
.WED...N wind 30 kt. Seas 12 ft.

$$

PKZ121-201315-
Resurrection Bay-
336 PM AKST Fri Feb 19 2021

...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY...
...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 30 kt diminishing to 15 kt after midnight. 
Seas 6 ft subsiding to 3 ft after midnight. Heavy freezing spray.
.SAT...N wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 3 ft. Heavy freezing spray.
.SAT NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray.
.SUN AND SUN NIGHT...N wind 20 kt. Seas 4 ft.
.MON...N wind 20 kt. Seas 4 ft.
.TUE THROUGH WED...N wind 10 kt. Seas 2 ft.

$$

PKZ125-201315-
Prince William Sound-
336 PM AKST Fri Feb 19 2021

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt becoming N 15 kt after midnight. 
Seas 9 ft subsiding to 3 ft after midnight. Freezing spray.
.SAT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.SAT NIGHT...N wind 15 kt. Seas 3 ft.
.SUN...N wind 10 kt. Seas 2 ft.
.SUN NIGHT...NW wind 15 kt. Seas 2 ft.
.MON...NW wind 15 kt. Seas 2 ft.
.TUE...NE wind 10 kt. Seas 2 ft.
.WED...NE wind 15 kt. Seas 2 ft.

$$

PKZ126-201315-
Port Valdez-
336 PM AKST Fri Feb 19 2021

.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. 
Seas 3 ft. Freezing spray.
.SAT...E wind 10 kt in the morning becoming variable less 
than 10 kt. Seas 2 ft.
.SAT NIGHT...E wind 10 kt becoming NE 15 kt after midnight. 
Seas 3 ft. Freezing spray.
.SUN...E wind 15 kt. Seas 3 ft.
.SUN NIGHT AND MON...E wind 10 kt. Seas 2 ft.
.TUE THROUGH WED...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-201315-
Valdez Narrows-
336 PM AKST Fri Feb 19 2021

...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY NIGHT...
...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 3 ft. Heavy freezing spray.
.SAT...NE wind 25 kt decreasing to 15 ft by afternoon. Seas 3 ft. 
Heavy freezing spray.
.SAT NIGHT...NE wind 20 kt increasing to 25 kt by midnight. Seas 3 
ft. Heavy freezing spray.
.SUN...NE wind 25 kt. Seas 3 ft.
.SUN NIGHT...NE wind 20 kt. Seas 3 ft.
.MON...NE wind 20 kt. Seas 3 ft.
.TUE...NE wind 10 kt. Seas 2 ft.
.WED...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ128-201315-
Valdez Arm-
336 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt decreasing to 15 kt after midnight. Seas 5 
ft subsiding to 3 ft after midnight. Freezing spray.
.SAT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.SAT NIGHT...NE wind 10 kt increasing to 15 kt after midnight.
Seas 3 ft. Freezing spray.
.SUN...NE wind 15 kt. Seas 3 ft.
.SUN NIGHT...NE wind 10 kt. Seas 2 ft.
.MON THROUGH WED...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-201315-
Passage Canal-
336 PM AKST Fri Feb 19 2021

...HEAVY FREEZING SPRAY WARNING TONIGHT...
...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 30 kt diminishing to 10 kt after midnight. 
Seas 5 ft subsiding to 2 ft after midnight. Heavy freezing spray.
.SAT AND SAT NIGHT...W wind 10 kt. Seas 2 ft.
.SUN...W wind 20 kt. Seas 3 ft.
.SUN NIGHT...W wind 15 kt. Seas 2 ft.
.MON...W wind 20 kt. Seas 3 ft.
.TUE THROUGH WED...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-201315-
West of Barren Islands including Kamishak Bay-
336 PM AKST Fri Feb 19 2021

...GALE WARNING THROUGH SATURDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 25 kt becoming NE 35 kt after midnight. Seas 8 ft
building to 12 ft after midnight. Heavy freezing spray.
.SAT...NE wind 35 kt. Seas 13 ft. Heavy freezing spray.
.SAT NIGHT...NE wind 35 kt decreasing to 25 kt after midnight. Seas 
14 ft subsiding to 11 ft after midnight. Heavy freezing spray.
.SUN...NW wind 30 kt. Seas 10 ft.
.SUN NIGHT...W wind 40 kt. Seas 16 ft.
.MON...W wind 35 kt. Seas 14 ft.
.TUE...E wind 15 kt. Seas 3 ft.
.WED...NW wind 25 kt. Seas 7 ft.

$$

PKZ131-201315-
Barren Islands East-
336 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...NW wind 25 kt becoming NE 20 kt after midnight. Seas
10 ft subsiding to 6 ft after midnight. Freezing spray.
.SAT...NE wind 30 kt. Seas 5 ft building to 9 ft by afternoon. 
Freezing spray. Snow.
.SAT NIGHT...NE wind 30 kt. Seas 13 ft. Freezing spray. Snow
showers.
.SUN...NW wind 35 kt. Seas 16 ft.
.SUN NIGHT...W wind 40 kt. Seas 17 ft.
.MON...W wind 40 kt. Seas 17 ft.
.TUE...S wind 25 kt. Seas 10 ft.
.WED...W wind 30 kt. Seas 13 ft.

$$

PKZ132-201315-
Marmot Island to Sitkinak-
336 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY NIGHT...

.TONIGHT...SE wind 15 kt increasing to E 30 kt by midnight. 
Seas 7 ft. Snow and rain.
.SAT...NE wind 30 kt. Seas 10 ft. Rain showers with snow.
.SAT NIGHT...E wind 30 kt becoming NW 25 kt after midnight. 
Seas 13 ft building to 21 ft after midnight. Rain showers.
.SUN...W wind 30 kt. Seas 20 ft.
.SUN NIGHT...W wind 35 kt. Seas 19 ft.
.MON...W wind 35 kt. Seas 18 ft.
.TUE...SW wind 25 kt. Seas 13 ft.
.WED...W wind 30 kt. Seas 13 ft.

$$

PKZ136-201315-
Chiniak Bay-
336 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY SATURDAY NIGHT...

.TONIGHT...NE wind 10 kt increasing to 20 kt after midnight. 
Seas 3 ft building to 5 ft after midnight. Freezing spray. Snow.
.SAT...NE wind 20 kt. Seas 6 ft. Freezing spray. Snow.
.SAT NIGHT...N wind 25 kt. Seas 9 ft subsiding to 5 ft after 
midnight. Snow showers and rain showers.
.SUN...W wind 20 kt. Seas 3 ft.
.SUN NIGHT...W wind 25 kt. Seas 4 ft.
.MON...W wind 25 kt. Seas 4 ft.
.TUE...S wind 15 kt. Seas 2 ft.
.WED...W wind 20 kt. Seas 3 ft.

$$

PKZ137-201315-
Marmot Bay-
336 PM AKST Fri Feb 19 2021

...SMALL CRAFT ADVISORY SATURDAY NIGHT...

.TONIGHT...N wind 10 kt becoming NE 15 kt after midnight. 
Seas 4 ft. Freezing spray.
.SAT...NE wind 15 kt increasing to 20 kt by afternoon. Seas 4 ft 
building to 9 ft in the afternoon. Freezing spray. Snow.
.SAT NIGHT...NE wind 25 kt decreasing to 20 kt after midnight. 
Seas 10 ft subsiding to 4 ft after midnight. Freezing spray. 
Snow showers.
.SUN...W wind 25 kt. Seas 6 ft.
.SUN NIGHT...W wind 30 kt. Seas 7 ft.
.MON...W wind 30 kt. Seas 6 ft.
.TUE...S wind 15 kt. Seas 3 ft.
.WED...W wind 25 kt. Seas 4 ft.

$$

PKZ138-201315-
Shelikof Strait-
336 PM AKST Fri Feb 19 2021

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...Variable wind up to 15 kt becoming NE 40 kt after 
midnight. Seas 5 ft building to 15 ft after midnight. Freezing 
spray.
.SAT...NE wind 35 kt. Seas 14 ft. Freezing spray. Snow showers.
.SAT NIGHT...NE wind 35 kt decreasing to N 25 kt after midnight. 
Seas 14 ft subsiding to 10 ft after midnight. Freezing spray. Snow 
showers.
.SUN AND SUN NIGHT...W wind 30 kt. Seas 10 ft.
.MON...W wind 25 kt. Seas 8 ft.
.TUE...S wind 20 kt. Seas 4 ft.
.WED...W wind 25 kt. Seas 5 ft.

$$

PKZ139-201315-
Cook Inlet Kalgin Island to Point Bede-
336 PM AKST Fri Feb 19 2021

...GALE WARNING THROUGH SATURDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...NE wind 15 kt increasing to 35 kt after midnight. Seas 5 
ft building to 11 ft after midnight. Heavy freezing spray.
.SAT...NE wind 35 kt decreasing to 30 kt by afternoon. Seas 11 ft. 
Heavy freezing spray.
.SAT NIGHT...NE wind 30 kt. Seas 11 ft. Heavy freezing spray.
.SUN...N wind 15 kt. Seas 4 ft.
.SUN NIGHT...NW wind 20 kt. Seas 4 ft.
.MON...NW wind 20 kt. Seas 4 ft.
.TUE...NE wind 15 kt. Seas 3 ft.
.WED...N wind 20 kt. Seas 4 ft.

$$

PKZ140-201315-
Cook Inlet North of Kalgin Island-
336 PM AKST Fri Feb 19 2021

.TONIGHT...NE wind 10 kt becoming N 15 kt after midnight.
.SAT...NE wind 15 kt diminishing to 10 kt in the afternoon.
.SAT NIGHT...NE wind 10 kt.
.SUN AND SUN NIGHT...Variable wind less than 10 kt.
.MON...NE wind 10 kt.
.TUE THROUGH WED...NW wind 15 kt.

$$

PKZ141-201315-
Kachemak Bay-
336 PM AKST Fri Feb 19 2021

...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY...

.TONIGHT...NE wind 15 kt. Seas 3 ft. Heavy Freezing spray.
.SAT...NE wind 15 kt. Seas 2 ft. Heavy freezing spray.
.SAT NIGHT...N wind 20 kt. Seas 2 ft. Freezing spray.
.SUN...NW wind 10 kt. Seas 2 ft.
.SUN NIGHT...W wind 15 kt. Seas 4 ft.
.MON...W wind 15 kt. Seas 4 ft.
.TUE...NE wind 10 kt. Seas 2 ft.
.WED...N wind 15 kt. Seas 4 ft.

$$
215 
FZAK51 PAFC 201303
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
403 AM AKST Sat Feb 20 2021

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.

PKZ197-210145-
403 AM AKST Sat Feb 20 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...A 978 mb low 90 nm east of Chignik moves to 70 nm
west of Yakutat at 972 mb Sun morning and moves inland by Sun 
afternoon. Another low forms over the Prince William Sound at 985 
mb Sun afternoon and slowly moves to 25 nm southwest of Cordova at 
991 mb by Mon morning.

$$

PKZ119-210145-
Cape Suckling to Cape Cleare-
403 AM AKST Sat Feb 20 2021

...GALE WARNING SUNDAY...

.TODAY...E wind 25 kt. Seas 8 ft. Freezing spray. Snow.
.TONIGHT...NE wind 25 kt. Seas 12 ft. Freezing spray along the coast.
Rain...except snow along the coast.
.SUN...W wind 35 kt. Seas 17 ft.
.SUN NIGHT...W wind 30 kt. Seas 16 ft.
.MON...NW wind 30 kt. Seas 16 ft.
.TUE...S wind 30 kt. Seas 12 ft.
.WED...NE wind 30 kt. Seas 13 ft.

$$

PKZ120-210145-
Cape Cleare to Gore Point-
403 AM AKST Sat Feb 20 2021

...GALE WARNING SUNDAY...

.TODAY...NE wind increasing to 30 kt. Seas 8 ft. Freezing spray. 
Snow.
.TONIGHT...NE wind 30 kt. Seas 10 ft. Snow and rain.
.SUN...NW wind 35 kt. Seas 14 ft.
.SUN NIGHT...W wind 40 kt. Seas 14 ft.
.MON...W wind 40 kt. Seas 16 ft.
.TUE...S wind 25 kt. Seas 9 ft.
.WED...N wind 30 kt. Seas 11 ft.

$$

PKZ121-210145-
Resurrection Bay-
403 AM AKST Sat Feb 20 2021

...HEAVY FREEZING SPRAY WARNING TODAY...
...SMALL CRAFT ADVISORY TONIGHT AND SUNDAY...

.TODAY...N wind 20 kt. Gusts to 30 kt early. Seas 4 ft. Heavy 
freezing spray. Snow.
.TONIGHT...N wind 25 kt. Gusts to 35 kt developing by midnight. Seas
5 ft. Freezing spray. Snow.
.SUN...N wind 25 kt. Gusts to 35 kt. Seas 5 ft. Freezing spray.
.SUN NIGHT...N wind 20 kt. Seas 4 ft.
.MON...N wind 20 kt. Seas 4 ft.
.TUE...N wind 10 kt. Seas 2 ft.
.WED...N wind 10 kt. Seas 2 ft.

$$

PKZ125-210145-
Prince William Sound-
403 AM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...NE wind 20 kt. Seas 3 ft. Freezing spray.
.TONIGHT...N wind 20 kt. Seas 3 ft. Freezing spray.
.SUN...NW wind 30 kt. Seas 6 ft. Freezing spray.
.SUN NIGHT...NW wind 20 kt. Seas 3 ft.
.MON...NW wind 15 kt. Seas 2 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 4 ft.

$$

PKZ126-210145-
Port Valdez-
403 AM AKST Sat Feb 20 2021

.TODAY...E wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.TONIGHT...E wind 10 kt becoming NE 15 kt after midnight. Seas 3
ft. Freezing spray.
.SUN...E wind 15 kt. Seas 3 ft. Freezing spray.
.SUN NIGHT...E wind 10 kt. Seas 2 ft.
.MON...E wind 10 kt. Seas 2 ft.
.TUE THROUGH WED...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-210145-
Valdez Narrows-
403 AM AKST Sat Feb 20 2021

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

.TODAY...NE wind 25 kt. Seas 3 ft. Heavy freezing spray.
.TONIGHT...NE wind 30 kt. Seas 3 ft. Freezing spray.
.SUN...NE wind 25 kt. Seas 3 ft. Freezing spray.
.SUN NIGHT...NE wind 20 kt. Seas 3 ft.
.MON...NE wind 20 kt. Seas 3 ft.
.TUE...Variable wind less than 10 kt. Seas 2 ft.
.WED...NE wind 10 kt. Seas 2 ft.

$$

PKZ128-210145-
Valdez Arm-
403 AM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 5 ft. Freezing spray.
.TONIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray.
.SUN...NE wind 20 kt. Seas 4 ft. Freezing spray.
.SUN NIGHT...NE wind 15 kt. Seas 3 ft.
.MON THROUGH WED...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-210145-
Passage Canal-
403 AM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...W wind 15 kt. Seas 2 ft. Snow.
.TONIGHT...W wind 10 kt increasing to 20 kt after midnight. Seas
3 ft. Freezing spray.
.SUN...W wind 25 kt. Gusts to 40 kt near Whittier. Seas 4 ft. 
Freezing spray.
.SUN NIGHT...W wind 25 kt. Seas 4 ft.
.MON...W wind 20 kt. Seas 3 ft.
.TUE...Variable wind less than 10 kt. Seas 2 ft.
.WED...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-210145-
West of Barren Islands including Kamishak Bay-
403 AM AKST Sat Feb 20 2021

...GALE WARNING TODAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...NE wind 35 kt. Seas 15 ft. Heavy freezing spray.
.TONIGHT...NE wind 30 kt. Seas 14 ft subsiding to 9 ft after
midnight. Freezing spray.
.SUN...W wind 30 kt. Seas 12 ft. Freezing spray.
.SUN NIGHT...W wind 45 kt. Seas 16 ft.
.MON...NW wind 35 kt. Seas 14 ft.
.TUE...E wind 20 kt. Seas 5 ft.
.WED...NW wind 25 kt. Seas 5 ft.

$$

PKZ131-210145-
Barren Islands East-
403 AM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...NE wind 30 kt. Seas 6 ft building to 10 ft in the
afternoon. Freezing spray. Snow.
.TONIGHT...NE wind 30 kt. Seas 12 ft. Freezing spray. Snow.
.SUN...NW wind 30 kt. Seas 13 ft.
.SUN NIGHT...W wind 40 kt. Seas 14 ft.
.MON...W wind 40 kt. Seas 15 ft.
.TUE...S wind 25 kt. Seas 9 ft.
.WED...NW wind 30 kt. Seas 10 ft.

$$

PKZ132-210145-
Marmot Island to Sitkinak-
403 AM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TODAY...NE wind 30 kt. Seas 13 ft. Rain showers with snow.
.TONIGHT...N wind 25 kt. Seas 14 ft. Rain.
.SUN...W wind 30 kt. Seas 15 ft.
.SUN NIGHT...W wind 40 kt. Seas 17 ft.
.MON...W wind 35 kt. Seas 16 ft.
.TUE...S wind 20 kt. Seas 11 ft.
.WED...W wind 35 kt. Seas 13 ft.

$$

PKZ136-210145-
Chiniak Bay-
403 AM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 7 ft. Freezing spray. Snow.
.TONIGHT...N wind 20 kt. Seas 7 ft subsiding to 4 ft after
midnight. Snow and rain.
.SUN...W wind 20 kt. Seas 3 ft.
.SUN NIGHT...W wind 25 kt. Seas 4 ft.
.MON...SW wind 25 kt. Seas 4 ft.
.TUE...S wind 15 kt. Seas 3 ft.
.WED...W wind 20 kt. Seas 3 ft.

$$

PKZ137-210145-
Marmot Bay-
403 AM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...NE wind 20 kt. Seas 5 ft. Freezing spray. Snow.
.TONIGHT...N wind 20 kt. Seas 6 ft. Freezing spray. Snow.
.SUN...W wind 20 kt increasing to 30 kt in the afternoon. Seas 4
ft building to 7 ft in the afternoon.
.SUN NIGHT...W wind 30 kt. Seas 7 ft.
.MON...SW wind 30 kt. Seas 6 ft.
.TUE...SE wind 15 kt. Seas 4 ft.
.WED...NW wind 20 kt. Seas 4 ft.

$$

PKZ138-210145-
Shelikof Strait-
403 AM AKST Sat Feb 20 2021

...GALE WARNING TODAY...

.TODAY...NE wind 40 kt. Seas building to 14 ft. Freezing spray. Snow
showers.
.TONIGHT...NE wind 30 kt. Seas 13 ft subsiding to 8 ft after
midnight. Freezing spray. Snow showers.
.SUN...W wind 30 kt. Seas 8 ft. Freezing spray.
.SUN NIGHT...W wind 30 kt. Seas 10 ft.
.MON...SW wind 25 kt. Seas 8 ft.
.TUE...SE wind 15 kt. Seas 4 ft.
.WED...W wind 20 kt. Seas 5 ft.

$$

PKZ139-210145-
Cook Inlet Kalgin Island to Point Bede-
403 AM AKST Sat Feb 20 2021

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

.TODAY...NE wind 35 kt. Seas 13 ft. Heavy freezing spray.
.TONIGHT...NE wind 30 kt. Seas 12 ft subsiding to 7 ft after
midnight. Heavy freezing spray.
.SUN...W wind 30 kt. Seas 5 ft building to 9 ft in the afternoon.
Freezing spray.
.SUN NIGHT...NW wind 25 kt. Seas 6 ft.
.MON...N wind 20 kt. Seas 4 ft.
.TUE...NE wind 20 kt. Seas 5 ft.
.WED...NW wind 20 kt. Seas 5 ft.

$$

PKZ140-210145-
Cook Inlet North of Kalgin Island-
403 AM AKST Sat Feb 20 2021

.TODAY...NE wind 15 kt.
.TONIGHT...NE wind 15 kt in the evening becoming variable less
than 10 kt.
.SUN...Variable wind less than 10 kt becoming NE 10 kt in the
afternoon.
.SUN NIGHT...N wind 10 kt.
.MON...NE wind 10 kt.
.TUE THROUGH WED...NE wind 15 kt.

$$

PKZ141-210145-
Kachemak Bay-
403 AM AKST Sat Feb 20 2021

...HEAVY FREEZING SPRAY WARNING TODAY...
...SMALL CRAFT ADVISORY TODAY AND SUNDAY...

.TODAY...NE wind 25 kt. Seas 3 ft. Heavy freezing spray.
.TONIGHT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.SUN...N wind 20 kt becoming W 25 kt in the afternoon. Seas 4 ft
building to 8 ft in the afternoon. Freezing spray.
.SUN NIGHT...W wind 20 kt. Seas 6 ft.
.MON...W wind 15 kt. Seas 4 ft.
.TUE...E wind 15 kt. Seas 3 ft.
.WED...NW wind 15 kt. Seas 4 ft.

$$
651 
FZAK51 PAFC 210015
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
315 PM AKST Sat Feb 20 2021

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.

PKZ197-211330-
315 PM AKST Sat Feb 20 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 973 mb low 180 nm South of Seward moves to 30 nm West of 
Yakutat at 975 mb Sun morning and moves inland by Sun afternoon. 
Its front stretches across the Northern Gulf through Mon morning. 
A 984 mb low forms on the front 45 nm South of Cordova Sun 
afternoon and moves to 135 nm West of Yakutat at 1001 mb by 
Mon afternoon.

$$

PKZ119-211330-
Cape Suckling to Cape Cleare-
315 PM AKST Sat Feb 20 2021

...GALE WARNING SUNDAY...

.TONIGHT...NE wind 30 kt. Seas 11 ft. Freezing spray along the coast.
.SUN...W wind 35 kt. Seas 17 ft. Freezing spray along the coast.
.SUN NIGHT...W wind 30 kt. Seas 15 ft.
.MON...W wind 30 kt. Seas 15 ft.
.MON NIGHT...NW wind 25 kt. Seas 15 ft.
.TUE...SE wind 30 kt. Seas 11 ft.
.WED...NE wind 30 kt. Seas 13 ft.
.THU...W wind 30 kt. Seas 13 ft.

$$

PKZ120-211330-
Cape Cleare to Gore Point-
315 PM AKST Sat Feb 20 2021

...GALE WARNING SUNDAY...

.TONIGHT...NE wind 30 kt. Seas 13 ft.
.SUN...W wind 35 kt. Seas 14 ft.
.SUN NIGHT...W wind 30 kt. Seas 13 ft. Freezing spray.
.MON...W wind 40 kt. Seas 15 ft.
.MON NIGHT...W wind 35 kt. Seas 14 ft.
.TUE...SE wind 25 kt. Seas 9 ft.
.WED...N wind 30 kt. Seas 11 ft.
.THU...W wind 30 kt. Seas 11 ft.

$$

PKZ121-211330-
Resurrection Bay-
315 PM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...N wind 20 kt increasing to 25 kt after midnight. Gusts to
30 kt increasing to 35 kt after midnight. Seas 5 ft. Freezing spray.
.SUN...N wind 25 kt decreasing to 20 kt by afternoon. Gusts to 35 
kt in the morning. Seas 5 ft. Freezing spray.
.SUN NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray.
.MON AND MON NIGHT...N wind 20 kt. Seas 4 ft.
.TUE THROUGH THU...N wind 10 kt. Seas 2 ft.

$$

PKZ125-211330-
Prince William Sound-
315 PM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TONIGHT...N wind 20 kt. Seas 4 ft. Freezing spray.
.SUN...NW wind 25 kt. Seas 5 ft. Freezing spray.
.SUN NIGHT...NW wind 15 kt. Seas 3 ft. Freezing spray.
.MON...NW wind 20 kt. Seas 4 ft.
.MON NIGHT...NW wind 15 kt. Seas 3 ft.
.TUE...NE wind 20 kt. Seas 3 ft.
.WED...N wind 20 kt. Seas 4 ft.
.THU...NW wind 10 kt. Seas 2 ft.

$$

PKZ126-211330-
Port Valdez-
315 PM AKST Sat Feb 20 2021

.TONIGHT...NE wind 10 kt increasing to 15 kt after midnight. 
Seas 3 ft. Freezing spray after midnight.
.SUN...NE wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 3 ft. Freezing spray in the morning.
.SUN NIGHT AND MON...Variable wind less than 10 kt. Seas 2 ft.
.MON NIGHT...NE wind 10 kt. Seas 2 ft.
.TUE THROUGH THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-211330-
Valdez Narrows-
315 PM AKST Sat Feb 20 2021

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

.TONIGHT...NE wind 30 kt. Seas 3 ft. Heavy freezing spray.
.SUN...NE wind 25 kt. Seas 3 ft. Freezing spray.
.SUN NIGHT...NE wind 20 kt. Seas 3 ft. Freezing spray.
.MON...NE wind 20 kt. Seas 3 ft.
.MON NIGHT...N wind 15 kt. Seas 3 ft.
.TUE THROUGH WED...NE wind 10 kt. Seas 2 ft.
.THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ128-211330-
Valdez Arm-
315 PM AKST Sat Feb 20 2021

.TONIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray.
.SUN...NE wind 20 kt. Seas 4 ft. Freezing spray.
.SUN NIGHT THROUGH MON NIGHT...NE wind 10 kt. Seas 2 ft.
.TUE THROUGH THU...N wind 10 kt. Seas 2 ft.

$$

PKZ129-211330-
Passage Canal-
315 PM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TONIGHT...W wind 10 kt increasing to 20 kt after midnight. 
Seas 3 ft. Freezing spray.
.SUN...W wind 25 kt. Gusts to 40 kt near Whittier. Seas 4 ft. 
Freezing spray.
.SUN NIGHT...W wind 20 kt. Seas 3 ft. Freezing spray.
.MON AND MON NIGHT...W wind 20 kt. Seas 3 ft.
.TUE...E wind 10 kt. Seas 2 ft.
.WED THROUGH THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-211330-
West of Barren Islands including Kamishak Bay-
315 PM AKST Sat Feb 20 2021

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

.TONIGHT...N wind 35 kt decreasing to NW 20 kt after midnight. 
Seas 14 ft subsiding to 6 ft after midnight. Heavy freezing spray.
.SUN...W wind 30 kt. Seas 12 ft. Heavy freezing spray.
.SUN NIGHT...W wind 40 kt. Seas 15 ft building to 20 ft after 
midnight. Heavy freezing spray.
.MON...W wind 40 kt. Seas 18 ft.
.MON NIGHT...N wind 20 kt. Seas 7 ft.
.TUE...E wind 20 kt. Seas 5 ft.
.WED...NW wind 25 kt. Seas 5 ft.
.THU...W wind 20 kt. Seas 5 ft.

$$

PKZ131-211330-
Barren Islands East-
315 PM AKST Sat Feb 20 2021

...GALE WARNING SUNDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING SUNDAY NIGHT...

.TONIGHT...N wind 30 kt becoming NW 20 kt late. Seas 13 ft. 
Freezing spray.
.SUN...W wind 30 kt. Seas 12 ft. Freezing spray,
.SUN NIGHT...W wind 30 kt increasing to 40 kt after midnight. 
Seas 12 ft. Heavy freezing spray.
.MON...W wind 40 kt. Seas 14 ft.
.MON NIGHT...W wind 30 kt. Seas 13 ft.
.TUE...SE wind 25 kt. Seas 9 ft.
.WED...NW wind 30 kt. Seas 10 ft.
.THU...W wind 30 kt. Seas 11 ft.

$$

PKZ132-211330-
Marmot Island to Sitkinak-
315 PM AKST Sat Feb 20 2021

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

.TONIGHT...NW wind 25 kt. Seas 14 ft. Rain showers.
.SUN...W wind 30 kt. Seas 15 ft.
.SUN NIGHT...W wind 30 kt. Seas 16 ft. Freezing spray.
.MON...W wind 35 kt. Seas 16 ft.
.MON NIGHT...SW wind 25 kt. Seas 13 ft.
.TUE...SE wind 20 kt. Seas 10 ft.
.WED...W wind 35 kt. Seas 13 ft.
.THU...SW wind 30 kt. Seas 15 ft.

$$

PKZ136-211330-
Chiniak Bay-
315 PM AKST Sat Feb 20 2021

.TONIGHT...NW wind 20 kt becoming W 10 kt after midnight. 
Seas 5 ft subsiding to 3 ft after midnight. Snow.
.SUN...W wind 10 kt. Seas 3 ft.
.SUN NIGHT...W wind 10 kt increasing to 20 kt after midnight. 
Seas 2 ft building to 4 ft after midnight. Freezing spray.
.MON...W wind 20 kt. Seas 4 ft.
.MON NIGHT...SW wind 10 kt. Seas 2 ft.
.TUE...SE wind 15 kt. Seas 4 ft.
.WED...W wind 20 kt. Seas 3 ft.
.THU...SW wind 15 kt. Seas 2 ft.

$$

PKZ137-211330-
Marmot Bay-
315 PM AKST Sat Feb 20 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...NW wind 20 kt becoming W 10 kt after midnight. Seas 4 ft 
subsiding to 2 ft after midnight. Freezing spray. Snow.
.SUN...W wind 20 kt. Seas 4 ft. Freezing spray.
.SUN NIGHT...W wind 20 kt increasing to 30 kt after midnight. 
Seas 4 ft building to 7 ft after midnight. Freezing spray.
.MON...W wind 30 kt. Seas 7 ft.
.MON NIGHT...SW wind 10 kt. Seas 2 ft.
.TUE...SE wind 15 kt. Seas 4 ft.
.WED...NW wind 20 kt. Seas 4 ft.
.THU...SW wind 15 kt. Seas 3 ft.

$$

PKZ138-211330-
Shelikof Strait-
315 PM AKST Sat Feb 20 2021

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

.TONIGHT...N wind 30 kt becoming NW 20 kt after midnight. 
Seas 12 ft subsiding to 5 ft after midnight. Freezing spray.
.SUN...W wind 25 kt. Seas 9 ft. Freezing spray.
.SUN NIGHT...W wind 30 kt. Seas 12 ft. Freezing spray.
.MON...W wind 30 kt. Seas 10 ft.
.MON NIGHT...SW wind 15 kt. Seas 3 ft.
.TUE...SE wind 15 kt. Seas 4 ft.
.WED...W wind 20 kt. Seas 5 ft.
.THU...SW wind 20 kt. Seas 5 ft.

$$

PKZ139-211330-
Cook Inlet Kalgin Island to Point Bede-
315 PM AKST Sat Feb 20 2021

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

.TONIGHT...NE wind 35 kt diminishing to 10 kt after midnight. 
Seas 13 ft subsiding to 4 ft after midnight. Heavy freezing spray.
.SUN...W wind 15 kt in the morning increasing to 25 kt. Seas 5 ft 
in the morning building to 9 ft. Freezing spray.
.SUN NIGHT...W wind 25 kt. Seas 4 ft building to 10 ft after 
midnight. Heavy freezing spray.
.MON...NW wind 25 kt. Seas 7 ft.
.MON NIGHT...N wind 10 kt. Seas 3 ft.
.TUE...NE wind 20 kt. Seas 5 ft.
.WED...NW wind 20 kt. Seas 5 ft.
.THU...SW wind 15 kt. Seas 3 ft.

$$

PKZ140-211330-
Cook Inlet North of Kalgin Island-
315 PM AKST Sat Feb 20 2021

.TONIGHT...NE wind 15 kt in the evening becoming variable less
than 10 kt.
.SUN THROUGH MON NIGHT...Variable wind less than 10 kt.
.TUE THROUGH WED...NE wind 15 kt.
.THU...SW wind 10 kt.

$$

PKZ141-211330-
Kachemak Bay-
315 PM AKST Sat Feb 20 2021

.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. 
Seas 3 ft. Freezing spray.
.SUN...SW wind 10 kt in the morning increasing to 20 kt. 
Seas 2 ft in the morning building to 6 ft. Freezing spray.
.SUN NIGHT...W wind 20 kt. Seas 6 ft. Freezing spray.
.MON...W wind 20 kt. Seas 6 ft.
.MON NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.TUE...E wind 15 kt. Seas 3 ft.
.WED...NW wind 15 kt. Seas 4 ft.
.THU...SW wind 15 kt. Seas 4 ft.

$$
894 
FZAK51 PAFC 210937 AAA
CWFAER

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
1237 AM AKST Sun Feb 21 2021

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.

PKZ197-212215-
1237 AM AKST Sun Feb 21 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

A 973 mb low 180 nm South of Seward moves to 30 nm West of 
Yakutat at 975 mb Sun morning and moves inland by Sun afternoon. 
Its front stretches across the Northern Gulf through Mon morning. 
A 984 mb low forms on the front 45 nm South of Cordova Sun 
afternoon and moves to 135 nm West of Yakutat at 1001 mb by 
Mon afternoon.

$$

PKZ119-212215-
Cape Suckling to Cape Cleare-
1237 AM AKST Sun Feb 21 2021

...GALE WARNING SUNDAY...

.TONIGHT...NE wind 30 kt. Seas 11 ft. Freezing spray along the
coast. 
.SUN...W wind 35 kt. Seas 17 ft. Freezing spray along the coast. 
.SUN NIGHT...W wind 30 kt. Seas 15 ft. 
.MON...W wind 30 kt. Seas 15 ft. 
.MON NIGHT...NW wind 25 kt. Seas 15 ft. 
.TUE...SE wind 30 kt. Seas 11 ft. 
.WED...NE wind 30 kt. Seas 13 ft. 
.THU...W wind 30 kt. Seas 13 ft.

$$

PKZ120-212215-
Cape Cleare to Gore Point-
1237 AM AKST Sun Feb 21 2021

...GALE WARNING SUNDAY...

.TONIGHT...NE wind 30 kt. Seas 13 ft. 
.SUN...W wind 35 kt. Seas 14 ft. 
.SUN NIGHT...W wind 30 kt. Seas 13 ft. Freezing spray. 
.MON...W wind 40 kt. Seas 15 ft. 
.MON NIGHT...W wind 35 kt. Seas 14 ft. 
.TUE...SE wind 25 kt. Seas 9 ft. 
.WED...N wind 30 kt. Seas 11 ft. 
.THU...W wind 30 kt. Seas 11 ft.

$$

PKZ121-212215-
Resurrection Bay-
1237 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...N wind 20 kt increasing to 25 kt after midnight. Gusts
to 30 kt increasing to 35 kt after midnight. Seas 5 ft. Freezing
spray. 
.SUN...N wind 25 kt decreasing to 20 kt by afternoon. Gusts to
35  kt in the morning. Seas 5 ft. Freezing spray. 
.SUN NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.MON AND MON NIGHT...N wind 20 kt. Seas 4 ft. 
.TUE THROUGH THU...N wind 10 kt. Seas 2 ft.

$$

PKZ125-212215-
Prince William Sound-
1237 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY SUNDAY...

.TONIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.SUN...NW wind 25 kt. Seas 5 ft. Freezing spray. 
.SUN NIGHT...NW wind 15 kt. Seas 3 ft. Freezing spray. 
.MON...NW wind 20 kt. Seas 4 ft. 
.MON NIGHT...NW wind 15 kt. Seas 3 ft. 
.TUE...NE wind 20 kt. Seas 3 ft. 
.WED...N wind 20 kt. Seas 4 ft. 
.THU...NW wind 10 kt. Seas 2 ft.

$$

PKZ126-212215-
Port Valdez-
1237 AM AKST Sun Feb 21 2021

.TONIGHT...NE wind 10 kt increasing to 15 kt after midnight. 
Seas 3 ft. Freezing spray after midnight. 
.SUN...NE wind 15 kt diminishing to 10 kt in the afternoon.  Seas
3 ft. Freezing spray in the morning. 
.SUN NIGHT AND MON...Variable wind less than 10 kt. Seas 2 ft. 
.MON NIGHT...NE wind 10 kt. Seas 2 ft. 
.TUE THROUGH THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-212215-
Valdez Narrows-
1237 AM AKST Sun Feb 21 2021

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

.TONIGHT...NE wind 30 kt. Seas 3 ft. Heavy freezing spray. 
.SUN...NE wind 25 kt. Seas 3 ft. Freezing spray. 
.SUN NIGHT...NE wind 20 kt. Seas 3 ft. Freezing spray. 
.MON...NE wind 20 kt. Seas 3 ft. 
.MON NIGHT...N wind 15 kt. Seas 3 ft. 
.TUE THROUGH WED...NE wind 10 kt. Seas 2 ft. 
.THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ128-212215-
Valdez Arm-
1237 AM AKST Sun Feb 21 2021

.TONIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray. 
.SUN...NE wind 20 kt. Seas 4 ft. Freezing spray. 
.SUN NIGHT THROUGH MON NIGHT...NE wind 10 kt. Seas 2 ft. 
.TUE THROUGH THU...N wind 10 kt. Seas 2 ft.

$$

PKZ129-212215-
Passage Canal-
1237 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY TONIGHT THROUGH SUNDAY...

.TONIGHT...W wind 30 kt with gust to 40 kt near Whittier. Seas 3 
ft. Freezing spray.
.SUN...W wind 25 kt. Gusts to 40 kt near Whittier. Seas 4 ft. 
Freezing spray. 
.SUN NIGHT...W wind 20 kt. Seas 3 ft. Freezing spray. 
.MON AND MON NIGHT...W wind 20 kt. Seas 3 ft. 
.TUE...E wind 10 kt. Seas 2 ft. 
.WED THROUGH THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-212215-
West of Barren Islands including Kamishak Bay-
1237 AM AKST Sun Feb 21 2021

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

.TONIGHT...N wind 35 kt decreasing to NW 20 kt after midnight. 
Seas 14 ft subsiding to 6 ft after midnight. Heavy freezing
spray. 
.SUN...W wind 30 kt. Seas 12 ft. Heavy freezing spray. 
.SUN NIGHT...W wind 40 kt. Seas 15 ft building to 20 ft after 
midnight. Heavy freezing spray. 
.MON...W wind 40 kt. Seas 18 ft. 
.MON NIGHT...N wind 20 kt. Seas 7 ft. 
.TUE...E wind 20 kt. Seas 5 ft. 
.WED...NW wind 25 kt. Seas 5 ft. 
.THU...W wind 20 kt. Seas 5 ft.

$$

PKZ131-212215-
Barren Islands East-
1237 AM AKST Sun Feb 21 2021

...GALE WARNING SUNDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING SUNDAY NIGHT...

.TONIGHT...N wind 30 kt becoming NW 20 kt late. Seas 13 ft. 
Freezing spray. 
.SUN...W wind 30 kt. Seas 12 ft. Freezing spray, 
.SUN NIGHT...W wind 30 kt increasing to 40 kt after midnight. 
Seas 12 ft. Heavy freezing spray. 
.MON...W wind 40 kt. Seas 14 ft. 
.MON NIGHT...W wind 30 kt. Seas 13 ft. 
.TUE...SE wind 25 kt. Seas 9 ft. 
.WED...NW wind 30 kt. Seas 10 ft. 
.THU...W wind 30 kt. Seas 11 ft.

$$

PKZ132-212215-
Marmot Island to Sitkinak-
1237 AM AKST Sun Feb 21 2021

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

.TONIGHT...NW wind 25 kt. Seas 14 ft. Rain showers. 
.SUN...W wind 30 kt. Seas 15 ft. 
.SUN NIGHT...W wind 30 kt. Seas 16 ft. Freezing spray. 
.MON...W wind 35 kt. Seas 16 ft. 
.MON NIGHT...SW wind 25 kt. Seas 13 ft. 
.TUE...SE wind 20 kt. Seas 10 ft. 
.WED...W wind 35 kt. Seas 13 ft. 
.THU...SW wind 30 kt. Seas 15 ft.

$$

PKZ136-212215-
Chiniak Bay-
1237 AM AKST Sun Feb 21 2021

.TONIGHT...NW wind 20 kt becoming W 10 kt after midnight.  Seas
5 ft subsiding to 3 ft after midnight. Snow. 
.SUN...W wind 10 kt. Seas 3 ft. 
.SUN NIGHT...W wind 10 kt increasing to 20 kt after midnight. 
Seas 2 ft building to 4 ft after midnight. Freezing spray. 
.MON...W wind 20 kt. Seas 4 ft. 
.MON NIGHT...SW wind 10 kt. Seas 2 ft. 
.TUE...SE wind 15 kt. Seas 4 ft. 
.WED...W wind 20 kt. Seas 3 ft. 
.THU...SW wind 15 kt. Seas 2 ft.

$$

PKZ137-212215-
Marmot Bay-
1237 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY SUNDAY NIGHT...

.TONIGHT...NW wind 20 kt becoming W 10 kt after midnight. Seas
4 ft  subsiding to 2 ft after midnight. Freezing spray. Snow. 
.SUN...W wind 20 kt. Seas 4 ft. Freezing spray. 
.SUN NIGHT...W wind 20 kt increasing to 30 kt after midnight. 
Seas 4 ft building to 7 ft after midnight. Freezing spray. 
.MON...W wind 30 kt. Seas 7 ft. 
.MON NIGHT...SW wind 10 kt. Seas 2 ft. 
.TUE...SE wind 15 kt. Seas 4 ft. 
.WED...NW wind 20 kt. Seas 4 ft. 
.THU...SW wind 15 kt. Seas 3 ft.

$$

PKZ138-212215-
Shelikof Strait-
1237 AM AKST Sun Feb 21 2021

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

.TONIGHT...N wind 30 kt becoming NW 20 kt after midnight.  Seas
12 ft subsiding to 5 ft after midnight. Freezing spray. 
.SUN...W wind 25 kt. Seas 9 ft. Freezing spray. 
.SUN NIGHT...W wind 30 kt. Seas 12 ft. Freezing spray. 
.MON...W wind 30 kt. Seas 10 ft. 
.MON NIGHT...SW wind 15 kt. Seas 3 ft. 
.TUE...SE wind 15 kt. Seas 4 ft. 
.WED...W wind 20 kt. Seas 5 ft. 
.THU...SW wind 20 kt. Seas 5 ft.

$$

PKZ139-212215-
Cook Inlet Kalgin Island to Point Bede-
1237 AM AKST Sun Feb 21 2021

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

.TONIGHT...NE wind 35 kt diminishing to 10 kt after midnight. 
Seas 13 ft subsiding to 4 ft after midnight. Heavy freezing
spray. 
.SUN...W wind 15 kt in the morning increasing to 25 kt. Seas 5 ft
 in the morning building to 9 ft. Freezing spray. 
.SUN NIGHT...W wind 25 kt. Seas 4 ft building to 10 ft after 
midnight. Heavy freezing spray. 
.MON...NW wind 25 kt. Seas 7 ft. 
.MON NIGHT...N wind 10 kt. Seas 3 ft. 
.TUE...NE wind 20 kt. Seas 5 ft. 
.WED...NW wind 20 kt. Seas 5 ft. 
.THU...SW wind 15 kt. Seas 3 ft.

$$

PKZ140-212215-
Cook Inlet North of Kalgin Island-
1237 AM AKST Sun Feb 21 2021

.TONIGHT...NE wind 15 kt in the evening becoming variable less
than 10 kt. 
.SUN THROUGH MON NIGHT...Variable wind less than 10 kt. 
.TUE THROUGH WED...NE wind 15 kt. 
.THU...SW wind 10 kt.

$$

PKZ141-212215-
Kachemak Bay-
1237 AM AKST Sun Feb 21 2021

.TONIGHT...NE wind 15 kt diminishing to 10 kt after midnight. 
Seas 3 ft. Freezing spray. 
.SUN...SW wind 10 kt in the morning increasing to 20 kt.  Seas
2 ft in the morning building to 6 ft. Freezing spray. 
.SUN NIGHT...W wind 20 kt. Seas 6 ft. Freezing spray. 
.MON...W wind 20 kt. Seas 6 ft. 
.MON NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.TUE...E wind 15 kt. Seas 3 ft. 
.WED...NW wind 15 kt. Seas 4 ft. 
.THU...SW wind 15 kt. Seas 4 ft.

$$
074 
FZAK51 PAFC 211300
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
400 AM AKST Sun Feb 21 2021

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.

PKZ197-220130-
400 AM AKST Sun Feb 21 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...A 970 mb low 110 nm south of Cordova and moves inland 
by this afternoon. Its front stretches across the Northern Gulf 
through Mon morning. A new low of 984 mb forms near Chenega. Mon 
morning this low will be 30 nm south of Hitchinbrook Entrance at 990
mb. 


$$

PKZ119-220130-
Cape Suckling to Cape Cleare-
400 AM AKST Sun Feb 21 2021

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 10 ft early building to 17 ft.
.TONIGHT...W wind 20 kt increasing to 30 kt after midnight. Seas
15 ft.
.MON...W wind 30 kt. Seas 14 ft.
.MON NIGHT...NW wind 25 kt. Seas 13 ft.
.TUE...SE wind 40 kt. Seas 11 ft.
.WED...E wind 40 kt. Seas 14 ft.
.THU...W wind 30 kt. Seas 15 ft.

$$

PKZ120-220130-
Cape Cleare to Gore Point-
400 AM AKST Sun Feb 21 2021

...GALE WARNING TODAY AND MONDAY...

.TODAY...NW wind 25 kt early becoming W wind 35 kt. Seas building 
to 14 ft.
.TONIGHT...W wind 30 kt. Seas 13 ft. Freezing spray.
.MON...W wind 35 kt. Seas 13 ft. Freezing spray.
.MON NIGHT...W wind 30 kt. Seas 12 ft.
.TUE...SE wind 40 kt. Seas 9 ft.
.WED...NW wind 40 kt. Seas 15 ft.
.THU...W wind 30 kt. Seas 13 ft.

$$

PKZ121-220130-
Resurrection Bay-
400 AM AKST Sun Feb 21 2021

...HEAVY FREEZING SPRAY WARNING MONDAY...
...SMALL CRAFT ADVISORY TODAY AND MONDAY...

.TODAY...N wind 25 kt. Seas 5 ft. Freezing spray.
.TONIGHT...N wind 20 kt. Seas 4 ft. Freezing spray.
.MON...N wind 25 kt. Gusts to 35 kt developing in the afternoon. Seas
5 ft. Heavy freezing spray in the morning.
.MON NIGHT...N wind 25 kt. Seas 5 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 4 ft.
.THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ125-220130-
Prince William Sound-
400 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY TODAY AND MONDAY...

.TODAY...NW wind 25 kt. Seas 4 ft. Freezing spray.
.TONIGHT...N wind 10 kt increasing to 15 kt after midnight. 
Seas 3 ft.
.MON...NW wind 30 kt. Seas 4 ft building to 6 ft in the afternoon.
Freezing spray.
.MON NIGHT...NW wind 30 kt. Seas 6 ft.
.TUE THROUGH WED...NE wind 25 kt. Seas 6 ft.
.THU...W wind 10 kt. Seas 2 ft.

$$

PKZ126-220130-
Port Valdez-
400 AM AKST Sun Feb 21 2021

.TODAY...NE wind to 15 kt diminishing to 10 kt in the afternoon. 
Seas 3 ft. Freezing spray.
.TONIGHT...Variable wind less than 10 kt. Seas 2 ft.
.MON...Variable wind less than 10 kt. Seas 2 ft.
.MON NIGHT...NE wind 10 kt. Seas 2 ft.
.TUE THROUGH THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ127-220130-
Valdez Narrows-
400 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY TODAY AND MONDAY...

.TODAY...NE wind 25 kt. Seas 3 ft. Freezing spray.
.TONIGHT...NE wind 20 kt. Seas 3 ft. Freezing spray.
.MON...NE wind 25 kt. Seas 3 ft. Freezing spray.
.MON NIGHT...N wind 25 kt. Seas 3 ft.
.TUE THROUGH WED...NE wind 10 kt. Seas 2 ft.
.THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ128-220130-
Valdez Arm-
400 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 5 ft. Freezing spray.
.TONIGHT...NE wind 10 kt. Seas 2 ft.
.MON...NE wind 10 kt increasing to 20 kt in the afternoon. Seas 2
ft
building to 4 ft in the afternoon. Freezing spray.
.MON NIGHT...NE wind 20 kt. Seas 4 ft.
.TUE THROUGH WED...NE wind 15 kt. Seas 3 ft.
.THU...NE wind 10 kt. Seas 2 ft.

$$

PKZ129-220130-
Passage Canal-
400 AM AKST Sun Feb 21 2021

...SMALL CRAFT ADVISORY TODAY AND MONDAY...

.TODAY...W wind 25 kt. Gusts to 40 kt near Whittier diminishing in
the afternoon. Seas 4 ft. Freezing spray.
.TONIGHT...W wind 20 kt. Seas 3 ft. Freezing spray.
.MON...W wind 25 kt. Gusts to 40 kt near Whittier in the afternoon. Seas
4 ft. Freezing spray.
.MON NIGHT...W wind 25 kt. Seas 4 ft.
.TUE...E wind 10 kt. Seas 2 ft.
.WED...W wind 10 kt. Seas 2 ft.
.THU...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ130-220130-
West of Barren Islands including Kamishak Bay-
400 AM AKST Sun Feb 21 2021

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

.TODAY...W wind 30 kt. Seas 10 ft. Freezing spray.
.TONIGHT...W wind 30 kt increasing to 40 kt after midnight. Seas
10 ft building to 18 ft after midnight. Heavy freezing spray.
.MON...W wind 50 kt. Seas 22 ft. Heavy freezing spray.
.MON NIGHT...NW wind 35 kt. Seas 13 ft.
.TUE...E wind 30 kt. Seas 8 ft.
.WED...NW wind 30 kt. Seas 8 ft.
.THU...SW wind 20 kt. Seas 5 ft.

$$

PKZ131-220130-
Barren Islands East-
400 AM AKST Sun Feb 21 2021

...GALE WARNING TONIGHT AND MONDAY...

.TODAY...W wind increasing to 30 kt. Seas 12 ft.
.TONIGHT...NW wind 25 kt becoming W 35 kt after midnight. Seas
13 ft. Freezing spray.
.MON...W wind 40 kt. Seas 15 ft. Freezing spray.
.MON NIGHT...W wind 30 kt. Seas 14 ft.
.TUE...SE wind 40 kt. Seas 8 ft.
.WED...W wind 40 kt. Seas 16 ft.
.THU...W wind 30 kt. Seas 12 ft.

$$

PKZ132-220130-
Marmot Island to Sitkinak-
400 AM AKST Sun Feb 21 2021

...GALE WARNING TONIGHT AND MONDAY...

.TODAY...W wind 30 kt. Seas 16 ft.
.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
15 ft. Freezing spray.
.MON...W wind 35 kt. Seas 15 ft. Freezing spray.
.MON NIGHT...SW wind 25 kt. Seas 13 ft.
.TUE...S wind 30 kt. Seas 12 ft.
.WED...W wind 35 kt. Seas 15 ft.
.THU...SW wind 30 kt. Seas 15 ft.

$$

PKZ136-220130-
Chiniak Bay-
400 AM AKST Sun Feb 21 2021

...GALE WARNING MONDAY...

.TODAY...W wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.TONIGHT...W wind 20 kt. Seas 2 ft building to 4 ft after
midnight. Freezing spray.
.MON...W wind 35 kt. Seas 6 ft. Freezing spray.
.MON NIGHT...SW wind 15 kt. Seas 2 ft.
.TUE...S wind 15 kt. Seas 4 ft.
.WED...W wind 30 kt. Seas 5 ft.
.THU...SW wind 25 kt. Seas 4 ft.

$$

PKZ137-220130-
Marmot Bay-
400 AM AKST Sun Feb 21 2021

...GALE WARNING MONDAY...

.TODAY...W wind 15 kt. Seas 3 ft. Freezing spray.
.TONIGHT...W wind 30 kt. Seas 4 ft building to 7 ft after
midnight. Freezing spray.
.MON...W wind 40 kt. Seas 8 ft. Freezing spray.
.MON NIGHT...SW wind 20 kt. Seas 3 ft.
.TUE...SE wind 15 kt. Seas 4 ft.
.WED...W wind 30 kt. Seas 6 ft.
.THU...SW wind 25 kt. Seas 5 ft.

$$

PKZ138-220130-
Shelikof Strait-
400 AM AKST Sun Feb 21 2021

...GALE WARNING TONIGHT AND MONDAY...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND MONDAY...

.TODAY...W wind 20 kt. Seas 6 ft. Freezing spray.
.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
8 ft. Heavy freezing spray after midnight.
.MON...W wind 40 kt. Gusts to 55 kt out of western bays and passes. Seas
9 ft. Heavy freezing spray.
.MON NIGHT...SW wind 25 kt. Seas 5 ft.
.TUE...SE wind 20 kt. Seas 5 ft.
.WED THROUGH THU...SW wind 25 kt. Seas 6 ft.

$$

PKZ139-220130-
Cook Inlet Kalgin Island to Point Bede-
400 AM AKST Sun Feb 21 2021

...HEAVY FREEZING SPRAY WARNING TONIGHT AND MONDAY...
...SMALL CRAFT ADVISORY TONIGHT AND MONDAY...

.TODAY...W wind 20 kt. Seas 6 ft. Freezing spray.
.TONIGHT...NW wind 25 kt. Seas 4 ft building to 7 ft after
midnight. Heavy freezing spray.
.MON...NW wind 30 kt. Seas 10 ft subsiding to 7 ft in the
afternoon. Heavy freezing spray.
.MON NIGHT...NE wind 20 kt. Seas 3 ft.
.TUE...NE wind 30 kt. Seas 8 ft.
.WED...W wind 30 kt. Seas 8 ft.
.THU...SW wind 20 kt. Seas 5 ft.

$$

PKZ140-220130-
Cook Inlet North of Kalgin Island-
400 AM AKST Sun Feb 21 2021

.TODAY...Variable wind less than 10 kt.
.TONIGHT...N wind 10 kt in the evening becoming variable less than
10 kt.
.MON...Variable wind less than 10 kt.
.MON NIGHT...NE wind 10 kt.
.TUE...N wind 25 kt.
.WED...SW wind 25 kt.
.THU...SW wind 15 kt.

$$

PKZ141-220130-
Kachemak Bay-
400 AM AKST Sun Feb 21 2021

...HEAVY FREEZING SPRAY WARNING MONDAY...
...SMALL CRAFT ADVISORY MONDAY...

.TODAY...NE wind 10 kt early becoming SW wind 20 kt. Seas 6 ft. 
Freezing spray.
.TONIGHT...W wind 20 kt. Seas 6 ft. Freezing spray.
.MON...W wind 30 kt becoming NW 20 kt in the afternoon. Seas 8 ft.
Heavy freezing spray.
.MON NIGHT...E wind 15 kt. Seas 2 ft.
.TUE...E wind 25 kt. Seas 5 ft.
.WED...NW wind 25 kt. Seas 5 ft.
.THU...SW wind 20 kt. Seas 6 ft.

$$

What forecasters said that day

The local office's own words before this heavy freezing spray warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before this heavy freezing spray warning went out at Feb 18, 5:41 AM AKST, 9 hours 59 minutes earlier.

Area forecast discussion, Feb 18, 5:41 AM AKST, 9 hours 59 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
541 AM AKST Thu Feb 18 2021

.ANALYSIS AND UPPER LEVELS...

A complex pattern is coming together across the Gulf and into
Southcentral this morning. An inverted trough near the surface
extending from the Gulf into the Kenai Peninsula and Mat-Su
Valleys is sandwiched between a ridge extending along the AK
Panhandle and an upper shortwave trough axis extending from the
interior Southwest/AKPEN to the far western Gulf. This inverted
trough extends away from a powerful storm force low now moving
north into the eastern Gulf. A dense, cold cloud shield extends
from the low and along the low level inverted trough axis, with a
broad deformation band of snow and coastal rain/snow mix spreading
from southeast to northwest across the Prince William Sound and
Kenai Peninsula. The band of snow is now spreading into the Mat-
Su Valleys where a more narrow band of snowfall should continue
to set up this morning along an axis roughly from Willow to
Kenai, including much of the Anchorage area.

Weather remains comparatively quiet out west across much of the
Eastern Bering/Aleutians, with northwest flow and low marine
stratus dominating the pattern here. A strong upper ridge is
building into the western Bering ahead of a potent front
approaching the Western Aleutians, with southeast gales just
beginning to spread into the area out ahead of the boundary in
the far southwest Bering. The front is associated with a deep low
south of the Kamchatka Peninsula that continues to drift slowly
north this morning.

&&

.MODEL DISCUSSION...

The central theme in the immediate to near term continues to be
the subtle but impactful uncertainty with the deformation band of
snow developing along a northeast to southwest axis across the
Mat-Su Valleys and down along the western Kenai Peninsula. At this
point, observational data (including radar, webcams and ASOS
stations) is rapidly becoming more useful than model output for
diagnosing the progression of the band snow setting up over
Southcentral today. Nevertheless, hi-res models appear to finally
be getting a better handle on where this band is setting up, and
most models now show the band stalling along an axis approximately
from Willow to Kenai through midday today. The exact behavior of
this band will ultimately rely on mesoscale details on where low
to mid level convergence and lift are most strongly focused, which
is what models have had the most difficulty capturing up to this
point.

Looking into tonight and beyond, models are in good agreement that
a potent Arctic trough will arc southeast across the southern
mainland, and models show excellent agreement for an associated
push of much colder air to end the snowfall from west to east
over Southcentral. By Friday night and Saturday, models diverge
notably with the behavior of the pattern across the
Bering/Aleutians. Several shortwaves and associated lows will
cross the region during this period, but the individual tracks of
each wave vary significantly across all model solutions. Thus,
forecast confidence across the Aleutians and Bering is lower than
average for the end of the week into this weekend.

&&

.AVIATION...
PANC...Snow and low ceilings will continue to lead to MVFR to IFR
conditions through this morning. Conditions should improve to
mainly MVFR by around midday as snow gradually lets up, eventually
improving to IFR by this evening as colder and drier air work in
from the northwest and scour out any lingering low stratus and
falling snow.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2...Thu and
Fri)...Our snow event is upon us. Plenty of moisture over the
Northern Gulf of AK is pushing from east to west across
Southcentral this morning. An inverted trough at the surface is
helping to take advantage of the moisture and produce widespread
snow across most of the area. Over the past few days, we have been
closely watching to see exactly where the heaviest deformation band
of snow would set up. From radar trends and the hi-resolution
models overnight, it now appears that it will align over the
northern tip of the Kenai Peninsula stretching into the Southern
Susitna Valley. West Anchorage will be just on the periphery of
this feature, so expect continued steady snow over the Anchorage
Bowl through the day with a general 2 to 4 inches of accumulation.
The 12z Anchorage upper air sounding and satellite imagery do not
show any overly impressive instability, so models have backed off
on the intensity of the precipitation under the core of the band.
Regardless, any time there are mesoscale snow bands, there is
potential for some localized higher snow accumulations.

As cold air starts to move in tonight courtesy of a potent upper
level wave, this will serve to wring out any lingering moisture in
the atmosphere. Thus, expect snow to continue into the evening for
Anchorage up through the Matanuska Valley, holding on the longest
near the mountains. The orientation of the wave will allow for
very light, fluffy snow to continue over the Copper River Basin
into early Fri. As the cold air ushers in some gusty north to
northwest winds, this light snow could be easily blown around.

Attention then quickly shifts to the very cold airmass blasting
across the area. This will lead to rapidly clearing conditions for
most locations. However, it will also bring some gusty winds
through the typical gaps (Thompson Pass, Barren Islands,
Whittier). For some the marine areas (namely Shelikof and the
Western Barren Islands), heavy freezing spray will be a serious
threat by Fri morning. For inland areas, we will be keeping an eye
on wind chills as the gusty winds work in tandem with 850 mb air
of -20C. Cold and dry conditions look to hold as we head into the
weekend, with the exception of Kodiak seeing another round of snow
and rain.

&&

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

An upper level trough situated over Southwest gradually moves
eastward today. As a result, interior locations will see snowfall
waning through the day as residual showers clear out with the
trough. An upper level ridge over the central Bering will move
inland, trapping low level moisture and likely keeping stratus and
fog in place around the Bristol Bay region Friday morning. Farther
north, a much colder airmass will drop southward in the wake of
the trough, bringing temperatures down to sub zero values across
much of Southwest. Low temperatures tonight will drop to near 15
below (F) across the Kuskokwim Delta, while the Bristol Bay area
will see values right around 0. Attention quickly shifts to an
incoming front approaching the Southwest coast Friday afternoon.
Offshore winds will increase in response to a low forming along
the frontal boundary. Temperatures should be cold enough for
precipitation to fall as snow beginning along the southern Alaska
Peninsula Friday night. As the front pushes eastward Saturday
morning, it will keep a horizontal orientation, keeping
precipitation limited to the Bristol Bay region and Alaska
Peninsula. There is still some uncertainty with regard to snowfall
totals, however thinking around 2-4 inches at this time is likely,
with the greatest amounts across the Alaska Peninsula. By Saturday
night, the associated low tracks eastward across the Alaska
Peninsula. This could keep snowfall lingering longer along the
foothills of the Alaska Range through early Sunday.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...

A low over Kamchatka continues to push a front eastward across
the Bering today. Warmer southerly flow has brought a rain/snow
mix to the western Aleutians this morning. As the front reaches
the central Bering Friday morning, a low spins up along this
frontal boundary just north of the central Aleutians. With enough
cold air in place over the northern Bering, the Pribilofs may see
a brief period of snow and blowing snow Saturday morning, however
this is largely dependent on the low track. A second low spins up
over the western Bering Saturday morning and quickly moves
southward toward the Aleutian Chain by Saturday afternoon. This
will keep cloud cover and snow showers in place across the
Aleutians through late Saturday. Cold air and northerly flow
return across much of the Bering by early Sunday.

&&

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

Bering Sea: An area of easterly gales over Bristol Bay will
diminish early Saturday morning. Heavy freezing spray will remain
possible through the day near the ice edge. Sub-gales and below 20
ft seas will continue through the weekend. Generally southerly
gales and greater than 20 ft seas will approach the western Bering
Monday, though the timing, strength and exact position remain
uncertain.

Gulf of Alaska: Brief easterly gales will possibly develop over
the Barren Islands and southern Cook Inlet Saturday evening,
though seas are not expected to exceed 20 ft. Model solutions
diverge thereafter, however westerly gales and greater than 20 ft
seas are possible in the southern Gulf on Sunday. Confidence is
actually greater on Monday as a low develops south of Prince
William Sound leading to potential high-end northwesterly gales
and building seas between the Kenai Peninsula and Kodiak.

&&

.LONG TERM FORECAST (Days 4 through 7: Sunday through Wednesday)...

A series of lows will move over the Gulf through Tuesday leading
to offshore flow and cooler temperatures across much of the
mainland and precipitation along the coast. Snow is possible
across the Copper River Basin as the GFS shows a relatively
strong upper low tracking over Southwest Alaska Sunday into
Monday. All models show an upper ridge moving over Southcentral on
Tuesday which would bring warmer temperatures, before a trailing
trough and its associated front lead to more precipitation chances
for Wednesday. A series of upper troughs and surface fronts are
likewise expected to persist across the Bering/Aleutians through
mid-week. Overall, model agreement is quite good. However, any
time there is a pattern shift, it takes some time for the models
to hone in on specific details and thus confidence remains
average.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Storm Warning: 130.
 		 Gale Warning: 120,125,131,132,137,138,351,352,165,
		 173-179,185.
		 Heavy Freezing Spray: 130,138,139,160,180,181,185.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...AS
SOUTHCENTRAL ALASKA...MSO
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KO
MARINE/LONG TERM...AP

In the hours before

Local storm report, Feb 18, 3:08 PM AKST, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
308 PM AKST THU FEB 18 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0308 PM     SNOW             UPPER POTTER VALLEY     61.06N 149.76W
02/18/2021  M2.2 INCH        ANCHORAGE          AK   TRAINED SPOTTER

            SPOTTER REPORTED 2.2 INCHES OF SNOW. STILL
            SNOWING LIGHTLY.

&&

MV

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 18, 4:03 PM AKSTBrisk Wind AdvisoryAFC36 hr
Feb 18, 4:03 PM AKSTGale WarningAFC36 hr
Feb 18, 4:03 PM AKSTSmall Craft AdvisoryAFC36 hr
Feb 18, 4:22 PM AKSTWinter Weather AdvisoryAFC29 hr
Feb 18, 9:13 PM AKSTDense Fog AdvisoryAFC8 hr
Feb 19, 4:04 AM AKSTSmall Craft AdvisoryAFC24 hr
Feb 19, 4:13 AM AKSTGale WarningAFC48 hr
Feb 19, 4:13 AM AKSTSmall Craft AdvisoryAFC35 hr
Feb 19, 4:13 AM AKSTStorm WarningAFC11 hr
Feb 19, 4:13 AM AKSTHeavy Freezing Spray WarningAFC35 hr
Feb 19, 4:23 AM AKSTWind Chill AdvisoryAFC35 hr

Nearby

Heavy Freezing Spray Warnings in Alaska, 2021Every heavy freezing spray warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.