Alert archive / Alaska / Small Craft Advisories in 2021

Small Craft Advisory 1030, NWS Anchorage, AK

December 23, 2021

NWS Anchorage, AK issued this small craft advisory at Dec 23, 2021, 3:45 PM AKST. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued
Dec 23, 2021, 3:45 PM AKST (00:45 UTC)
Expired
Dec 25, 2021, 3:45 AM AKST
In force
36 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

474 
FZAK51 PAFC 240045
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
345 PM AKST Thu Dec 23 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.

PKZ197-241315-
345 PM AKST Thu Dec 23 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
High pressure over the eastern Bering Sea and an elongated low over 
the eastern Gulf will persist into Fri afternoon. A weak trough will 
the develop across the Northern Gulf through Sat afternoon. 

$$

PKZ119-241315-
Cape Suckling to Cape Cleare-
345 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt. Gusts up to 55 kt out of the Copper River
Delta. Seas 14 ft, except 6 ft near the coast.
.FRI...N wind 30 kt. Gusts up to 50 kt out of the Copper River Delta
diminishing to 30 kt in the afternoon. Seas 10 ft, except 4 ft near
the coast.
.FRI NIGHT...N wind 25 kt becoming NE 15 kt after midnight. Seas 7 
ft.
.SAT...NE wind 15 kt. Seas 4 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 4 ft.
.SUN...E wind 15 kt. Seas 5 ft.
.MON...Variable wind 10 kt. Seas 9 ft.
.TUE...S wind 15 kt. Seas 8 ft.

$$

PKZ120-241315-
Cape Cleare to Gore Point-
345 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 40 kt. Seas 15 ft, except 7 ft near the coast.
.FRI...NW wind 30 kt. Seas 8 ft.
.FRI NIGHT...Variable wind 15 kt. Seas 6 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 4 ft.
.SUN...W wind 20 kt. Seas 9 ft.
.MON...NW wind 25 kt. Seas 11 ft.
.TUE...W wind 15 kt. Seas 7 ft.

$$

PKZ121-241315-
Resurrection Bay-
345 PM AKST Thu Dec 23 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...N wind 35 kt. Seas 7 ft. 
.FRI...N wind 35 kt diminishing to 25 kt in the afternoon. Seas
7 ft.
.FRI NIGHT...N wind 15 kt becoming variable less than 10 kt after 
midnight. Seas 3 ft.
.SAT AND SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN THROUGH MON...N wind 15 kt. Seas 3 ft.
.TUE...Variable wind 10 kt. Seas 2 ft.

$$

PKZ125-241315-
Prince William Sound-
345 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...N wind 30 kt. Seas 7 ft.
.FRI...NW wind 25 kt. Seas 4 ft.
.FRI NIGHT...NE wind 15 kt. Seas 3 ft.
.SAT...NE wind 10 kt. Seas 2 ft.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...E wind 10 kt. Seas 2 ft.
.MON...Variable wind less than 10 kt. Seas 2 ft.
.TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ126-241315-
Port Valdez-
345 PM AKST Thu Dec 23 2021

.TONIGHT...NE wind increasing to 20 kt with gusts to 30 kt after 
midnight. Seas building to 3 ft after midnight. Freezing spray after
midnight.
.FRI...NE wind 20 kt with gusts to 35 kt. Wind diminishing to 15 kt 
in the afternoon. Seas 3 ft.
.FRI NIGHT...E wind 10 kt. Seas 2 ft.
.SAT AND SAT NIGHT...E wind 10 kt. Seas 2 ft.
.SUN...Variable wind less than 10 kt. Seas 2 ft.
.MON THROUGH TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ127-241315-
Valdez Narrows-
345 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...NE wind increasing to 35 kt. Seas 4 ft. Freezing spray.
.FRI...NE wind 30 kt. Seas 3 ft. Freezing spray.
.FRI NIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray.
.SAT AND SAT NIGHT...NE wind 15 kt. Seas 3 ft.
.SUN...NE wind 20 kt. Seas 3 ft.
.MON...NE wind 25 kt. Seas 3 ft.
.TUE...NE wind 30 kt. Seas 3 ft.

$$

PKZ128-241315-
Valdez Arm-
345 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...NE wind increasing to 30 kt. Seas 6 ft. 
.FRI...NE wind 25 kt. Seas 5 ft. 
.FRI NIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray.
.SAT...NE wind 15 kt. Seas 3 ft.
.SAT NIGHT...NE wind 10 kt. Seas 2 ft.
.SUN...Variable wind 15 kt. Seas 3 ft.
.MON THROUGH TUE...NE wind 20 kt. Seas 4 ft.

$$

PKZ129-241315-
Passage Canal-
345 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Gusts up to 50 kt near Whittier. Seas 5 ft.
Freezing spray after midnight.
.FRI...W wind 25 kt. Gusts up to 40 kt near Whittier in the morning.
Seas 5 ft. Freezing spray.
.FRI NIGHT...W wind 20 kt diminishing to 10 kt after midnight. Seas 
2 ft. Freezing spray during the evening.
.SAT AND SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...E wind 20 kt. Seas 3 ft.
.MON...W wind 20 kt. Seas 3 ft.
.TUE...E wind 10 kt. Seas 2 ft.

$$

PKZ130-241315-
West of Barren Islands including Kamishak Bay-
345 PM AKST Thu Dec 23 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...W wind 40 kt. Seas 13 ft.
.FRI...NW wind 40 kt diminishing to 25 kt in the afternoon. Seas
13 ft subsiding to 7 ft in the afternoon.
.FRI NIGHT...NW wind 15 kt. Seas 5 ft.
.SAT...N wind 20 kt. Seas 5 ft.
.SAT NIGHT...NW wind 15 kt. Seas 4 ft.
.SUN...W wind 25 kt. Seas 7 ft.
.MON...W wind 20 kt. Seas 5 ft.
.TUE...N wind 15 kt. Seas 5 ft.

$$

PKZ131-241315-
Barren Islands East-
345 PM AKST Thu Dec 23 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...NW wind 45 kt. Seas 16 ft.
.FRI...NW wind 35 kt diminishing to 25 kt in the afternoon. Seas
12 ft.
.FRI NIGHT...W wind 20 kt. Seas 7 ft.
.SAT AND SAT NIGHT...W wind 20 kt. Seas 7 ft.
.SUN...W wind 30 kt. Seas 11 ft.
.MON...W wind 25 kt. Seas 12 ft.
.TUE...W wind 20 kt. Seas 9 ft.

$$

PKZ132-241315-
Marmot Island to Sitkinak-
345 PM AKST Thu Dec 23 2021

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

.TONIGHT...W wind 30 kt. Seas 12 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.FRI NIGHT...W wind 25 kt, except variable 10 kt N of Dangerous Cape.
Seas 8 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SAT NIGHT...W wind 20 kt. Seas 7 ft.
.SUN THROUGH MON...W wind 30 kt. Seas 12 ft.
.TUE...SW wind 25 kt. Seas 9 ft.

$$

PKZ136-241315-
Chiniak Bay-
345 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Seas 3 ft.
.FRI...NW wind 20 kt becoming variable less than 10 kt in the
afternoon. Seas 3 ft.
.FRI NIGHT...Variable wind less than 10 kt. Seas 3 ft.
.SAT...SE wind 10 kt. Seas 3 ft.
.SAT NIGHT...SW wind 10 kt. Seas 2 ft.
.SUN...SW wind 20 kt. Seas 3 ft.
.MON...W wind 15 kt. Seas 2 ft.
.TUE...SW wind 10 kt. Seas 2 ft.

$$

PKZ137-241315-
Marmot Bay-
345 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Seas 6 ft.
.FRI...W wind 20 kt becoming NW 10 kt in the afternoon. Seas 3 ft.
.FRI NIGHT...W wind 10 kt. Seas 2 ft.
.SAT AND SAT NIGHT...W wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 4 ft.
.TUE...W wind 10 kt. Seas 2 ft.

$$

PKZ138-241315-
Shelikof Strait-
345 PM AKST Thu Dec 23 2021

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

.TONIGHT...W wind 30 kt. Seas 10 ft.
.FRI...NW wind 25 kt. Seas 8 ft.
.FRI NIGHT...W wind 25 kt. Seas 7 ft.
.SAT...W wind 25 kt. Seas 7 ft.
.SAT NIGHT...SW wind 20 kt. Seas 7 ft.
.SUN...SW wind 25 kt. Seas 7 ft.
.MON THROUGH TUE...SW wind 20 kt. Seas 6 ft.

$$

PKZ139-241315-
Cook Inlet Kalgin Island to Point Bede-
345 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 30 kt becoming NE 15 kt after midnight. Seas 9 ft 
subsiding to 5 ft after midnight. Freezing spray.
.FRI...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft.
.FRI NIGHT...NE wind 15 kt. Seas 3 ft.
.SAT AND SAT NIGHT...N wind 10 kt. Seas 3 ft.
.SUN...W wind 20 kt. Seas 5 ft.
.MON THROUGH TUE...N wind 15 kt. Seas 3 ft.

$$

PKZ140-241315-
Cook Inlet North of Kalgin Island-
345 PM AKST Thu Dec 23 2021

.TONIGHT...E wind 20 kt becoming variable less than 10 kt after 
midnight.
.FRI...Variable wind less than 10 kt.
.FRI NIGHT...NE wind 10 kt.
.SAT THROUGH TUE...N wind 10 kt.

$$

PKZ141-241315-
Kachemak Bay-
345 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 30 kt becoming N 15 kt after midnight. Seas 10 ft 
subsiding to 4 ft after midnight.
.FRI...Variable wind 10 kt. Seas 2 ft.
.FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 15 kt. Seas 4 ft.
.MON THROUGH TUE...W wind 10 kt. Seas 2 ft.

$$
3 follow-up statements
835 
FZAK51 PAFC 240749 AAA
CWFAER

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
1049 PM AKST Thu Dec 23 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.

PKZ197-242015-
1049 PM AKST Thu Dec 23 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...
High pressure over the eastern Bering Sea and an elongated low over 
the eastern Gulf will persist into Fri afternoon. A weak trough will 
the develop across the Northern Gulf through Sat afternoon. 

$$

PKZ119-242015-
Cape Suckling to Cape Cleare-
1049 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt. Gusts up to 55 kt out of the Copper
River Delta. Seas 14 ft, except 6 ft near the coast. 
.FRI...N wind 30 kt. Gusts up to 50 kt out of the Copper River
Delta diminishing to 30 kt in the afternoon. Seas 10 ft, except
4 ft near the coast. 
.FRI NIGHT...N wind 25 kt becoming NE 15 kt after midnight. Seas
7  ft. 
.SAT...NE wind 15 kt. Seas 4 ft. 
.SAT NIGHT...Variable wind 10 kt. Seas 4 ft. 
.SUN...E wind 15 kt. Seas 5 ft. 
.MON...Variable wind 10 kt. Seas 9 ft. 
.TUE...S wind 15 kt. Seas 8 ft.

$$

PKZ120-242015-
Cape Cleare to Gore Point-
1049 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 40 kt. Seas 15 ft, except 7 ft near the coast.
.FRI...NW wind 30 kt. Seas 8 ft. 
.FRI NIGHT...Variable wind 15 kt. Seas 6 ft. 
.SAT...E wind 15 kt. Seas 4 ft. 
.SAT NIGHT...Variable wind 10 kt. Seas 4 ft. 
.SUN...W wind 20 kt. Seas 9 ft. 
.MON...NW wind 25 kt. Seas 11 ft. 
.TUE...W wind 15 kt. Seas 7 ft.

$$

PKZ121-242015-
Resurrection Bay-
1049 PM AKST Thu Dec 23 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...N wind 35 kt. Seas 7 ft.  
.FRI...N wind 35 kt diminishing to 25 kt in the afternoon. Seas
7 ft. 
.FRI NIGHT...N wind 15 kt becoming variable less than 10 kt after
 midnight. Seas 3 ft. 
.SAT AND SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.SUN THROUGH MON...N wind 15 kt. Seas 3 ft. 
.TUE...Variable wind 10 kt. Seas 2 ft.

$$

PKZ125-242015-
Prince William Sound-
1049 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...N wind 30 kt. Seas 7 ft. 
.FRI...NW wind 25 kt. Seas 4 ft. 
.FRI NIGHT...NE wind 15 kt. Seas 3 ft. 
.SAT...NE wind 10 kt. Seas 2 ft. 
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.SUN...E wind 10 kt. Seas 2 ft. 
.MON...Variable wind less than 10 kt. Seas 2 ft. 
.TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ126-242015-
Port Valdez-
1049 PM AKST Thu Dec 23 2021

.TONIGHT...NE wind increasing to 20 kt with gusts to 30 kt after 
midnight. Seas building to 3 ft after midnight. Freezing spray
after midnight. 
.FRI...NE wind 20 kt with gusts to 35 kt. Wind diminishing to
15 kt  in the afternoon. Seas 3 ft. 
.FRI NIGHT...E wind 10 kt. Seas 2 ft. 
.SAT AND SAT NIGHT...E wind 10 kt. Seas 2 ft. 
.SUN...Variable wind less than 10 kt. Seas 2 ft. 
.MON THROUGH TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ127-242015-
Valdez Narrows-
1049 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...NE wind increasing to 35 kt. Seas 4 ft. Freezing
spray. 
.FRI...NE wind 30 kt. Seas 3 ft. Freezing spray. 
.FRI NIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray. 
.SAT AND SAT NIGHT...NE wind 15 kt. Seas 3 ft. 
.SUN...NE wind 20 kt. Seas 3 ft. 
.MON...NE wind 25 kt. Seas 3 ft. 
.TUE...NE wind 30 kt. Seas 3 ft.

$$

PKZ128-242015-
Valdez Arm-
1049 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...NE wind increasing to 30 kt. Seas 6 ft.  
.FRI...NE wind 25 kt. Seas 5 ft.  
.FRI NIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray. 
.SAT...NE wind 15 kt. Seas 3 ft. 
.SAT NIGHT...NE wind 10 kt. Seas 2 ft. 
.SUN...Variable wind 15 kt. Seas 3 ft. 
.MON THROUGH TUE...NE wind 20 kt. Seas 4 ft.

$$

PKZ129-242015-
Passage Canal-
1049 PM AKST Thu Dec 23 2021

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Gusts up to 50 kt near Whittier. Seas
5 ft. Freezing spray after midnight. 
.FRI...W wind 25 kt. Gusts up to 40 kt near Whittier in the
morning. Seas 5 ft. Freezing spray. 
.FRI NIGHT...W wind 20 kt diminishing to 10 kt after midnight.
Seas  2 ft. Freezing spray during the evening. 
.SAT AND SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.SUN...E wind 20 kt. Seas 3 ft. 
.MON...W wind 20 kt. Seas 3 ft. 
.TUE...E wind 10 kt. Seas 2 ft.

$$

PKZ130-242015-
West of Barren Islands including Kamishak Bay-
1049 PM AKST Thu Dec 23 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...W wind 40 kt. Seas 13 ft. 
.FRI...NW wind 40 kt diminishing to 25 kt in the afternoon. Seas
13 ft subsiding to 7 ft in the afternoon. 
.FRI NIGHT...NW wind 15 kt. Seas 5 ft. 
.SAT...N wind 20 kt. Seas 5 ft. 
.SAT NIGHT...NW wind 15 kt. Seas 4 ft. 
.SUN...W wind 25 kt. Seas 7 ft. 
.MON...W wind 20 kt. Seas 5 ft. 
.TUE...N wind 15 kt. Seas 5 ft.

$$

PKZ131-242015-
Barren Islands East-
1049 PM AKST Thu Dec 23 2021

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...NW wind 45 kt. Seas 16 ft. 
.FRI...NW wind 35 kt diminishing to 25 kt in the afternoon. Seas
12 ft. 
.FRI NIGHT...W wind 20 kt. Seas 7 ft. 
.SAT AND SAT NIGHT...W wind 20 kt. Seas 7 ft. 
.SUN...W wind 30 kt. Seas 11 ft. 
.MON...W wind 25 kt. Seas 12 ft. 
.TUE...W wind 20 kt. Seas 9 ft.

$$

PKZ132-242015-
Marmot Island to Sitkinak-
1049 PM AKST Thu Dec 23 2021

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

.TONIGHT...W wind 30 kt. Seas 12 ft. 
.FRI...NW wind 25 kt. Seas 11 ft. 
.FRI NIGHT...W wind 25 kt, except variable 10 kt N of Dangerous
Cape. Seas 8 ft. 
.SAT...W wind 25 kt. Seas 8 ft. 
.SAT NIGHT...W wind 20 kt. Seas 7 ft. 
.SUN THROUGH MON...W wind 30 kt. Seas 12 ft. 
.TUE...SW wind 25 kt. Seas 9 ft.

$$

PKZ136-242015-
Chiniak Bay-
1049 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Gusts to 40 kt. Seas 3 ft. 
.FRI...NW wind 20 kt becoming variable less than 10 kt in the
afternoon. Seas 3 ft. 
.FRI NIGHT...Variable wind less than 10 kt. Seas 3 ft. 
.SAT...SE wind 10 kt. Seas 3 ft. 
.SAT NIGHT...SW wind 10 kt. Seas 2 ft. 
.SUN...SW wind 20 kt. Seas 3 ft. 
.MON...W wind 15 kt. Seas 2 ft. 
.TUE...SW wind 10 kt. Seas 2 ft.

$$

PKZ137-242015-
Marmot Bay-
1049 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 25 kt. Gusts to 40 kt. Seas 6 ft. 
.FRI...W wind 20 kt becoming NW 10 kt in the afternoon. Seas
3 ft. 
.FRI NIGHT...W wind 10 kt. Seas 2 ft. 
.SAT AND SAT NIGHT...W wind 15 kt. Seas 3 ft. 
.SUN THROUGH MON...W wind 20 kt. Seas 4 ft. 
.TUE...W wind 10 kt. Seas 2 ft.

$$

PKZ138-242015-
Shelikof Strait-
1049 PM AKST Thu Dec 23 2021

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

.TONIGHT...W wind 30 kt. Gusts to 45 kt out of bays and passes. 
Seas 10 ft.
.FRI...NW wind 25 kt. Seas 8 ft. 
.FRI NIGHT...W wind 25 kt. Seas 7 ft. 
.SAT...W wind 25 kt. Seas 7 ft. 
.SAT NIGHT...SW wind 20 kt. Seas 7 ft. 
.SUN...SW wind 25 kt. Seas 7 ft. 
.MON THROUGH TUE...SW wind 20 kt. Seas 6 ft.

$$

PKZ139-242015-
Cook Inlet Kalgin Island to Point Bede-
1049 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 30 kt becoming NE 15 kt after midnight. 
Seas 9 ft subsiding to 5 ft after midnight. Freezing spray. 
.FRI...NE wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 3 ft. 
.FRI NIGHT...NE wind 15 kt. Seas 3 ft. 
.SAT AND SAT NIGHT...N wind 10 kt. Seas 3 ft. 
.SUN...W wind 20 kt. Seas 5 ft. 
.MON THROUGH TUE...N wind 15 kt. Seas 3 ft.

$$

PKZ140-242015-
Cook Inlet North of Kalgin Island-
1049 PM AKST Thu Dec 23 2021

.TONIGHT...E wind 20 kt becoming variable less than 10 kt after 
midnight. 
.FRI...Variable wind less than 10 kt. 
.FRI NIGHT...NE wind 10 kt. 
.SAT THROUGH TUE...N wind 10 kt.

$$

PKZ141-242015-
Kachemak Bay-
1049 PM AKST Thu Dec 23 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...W wind 30 kt becoming N 15 kt after midnight. Seas
10 ft  subsiding to 4 ft after midnight. 
.FRI...Variable wind 10 kt. Seas 2 ft. 
.FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.SAT...Variable wind less than 10 kt. Seas 2 ft. 
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft. 
.SUN...SW wind 15 kt. Seas 4 ft. 
.MON THROUGH TUE...W wind 10 kt. Seas 2 ft.

$$
903 
FZAK51 PAFC 241253
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
353 AM AKST Fri Dec 24 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.

PKZ197-250215-
353 AM AKST Fri Dec 24 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

High pressure over the eastern Bering Sea and an elongated 
low over the eastern Gulf will persist into Friday night. 
A weak trough will the develop across the northern Gulf 
through Saturday night.

$$

PKZ119-250215-
Cape Suckling to Cape Cleare-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Gusts to 50 kt out of the Copper River Delta.
Seas 9 ft, except 4 ft near the coast.
.TONIGHT...N wind 15 kt becoming Variable 15 kt after midnight. 
Gusts to 35 kt out of the Copper River Delta. Seas 7 ft, 
except 3 ft near the coast.
.SAT...E wind 15 kt. Seas 4 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 4 ft.
.SUN...SW wind 30 kt. Seas 7 ft.
.MON...N wind 15 kt. Seas 8 ft.
.TUE...W wind 15 kt. Seas 8 ft.

$$

PKZ120-250215-
Cape Cleare to Gore Point-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NW wind 30 kt. Gusts to 40 kt near Resurrection Bay 
in the morning. Seas 8 ft.
.TONIGHT...N wind 20 kt becoming Variable 15 kt after midnight. 
Seas 6 ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SAT NIGHT...SW wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...NW wind 35 kt. Seas 13 ft.
.TUE...W wind 20 kt. Seas 7 ft.

$$

PKZ121-250215-
Resurrection Bay-
353 AM AKST Fri Dec 24 2021

...GALE WARNING TODAY...

.TODAY...N wind 35 kt diminishing to 25 kt in the afternoon. 
Seas 7 ft subsiding to 4 ft in the afternoon.
.TONIGHT...N wind 20 kt diminishing to 10 kt after midnight. 
Seas 4 ft subsiding to 2 ft after midnight. 
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT THROUGH MON...N wind 15 kt. Seas 3 ft.
.TUE...Variable wind 10 kt. Seas 2 ft.

$$

PKZ125-250215-
Prince William Sound-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt diminishing to 15 kt in the afternoon. 
Gusts to 35 kt out of bays and passes in the morning. 
Seas 5 ft subsiding to 3 ft in the afternoon.
.TONIGHT...NE wind 15 kt becoming E 10 kt after midnight. 
Seas 2 ft.
.SAT...NE wind 10 kt. Seas 2 ft.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...E wind 15 kt. Seas 3 ft.
.MON THROUGH TUE...Variable wind less than 10 kt. Seas 2 ft.

$$

PKZ126-250215-
Port Valdez-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt diminishing to 15 kt in the afternoon. 
Gusts to 35 kt diminishing to 25 kt in the afternoon. 
Seas 5 ft subsiding to 3 ft in the afternoon.
.TONIGHT...E wind 10 kt. Seas 2 ft.
.SAT THROUGH SUN...Variable wind less than 10 kt. Seas 2 ft.
.MON THROUGH TUE...NE wind 10 kt. Seas 2 ft.

$$

PKZ127-250215-
Valdez Narrows-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NE wind 25 kt. Seas 3 ft. 
.TONIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray.
.SAT...NE wind 15 kt. Seas 3 ft. 
.SAT NIGHT AND SUN...NE wind 15 kt. Seas 3 ft.
.SUN...NE wind 15 kt. Seas 3 ft.
.MON...NE wind 25 kt. Seas 3 ft.
.TUE...NE wind 30 kt. Seas 3 ft.

$$

PKZ128-250215-
Valdez Arm-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...NE wind 25 kt. Seas 5 ft. 
.TONIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray. 
.SAT...NE wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 3 ft.
.SAT NIGHT...NE wind 10 kt. Seas 2 ft.
.SUN...NE wind 15 kt. Seas 3 ft.
.MON THROUGH TUE...NE wind 20 kt. Seas 4 ft.

$$

PKZ129-250215-
Passage Canal-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TODAY...

.TODAY...W wind 30 kt diminishing to 20 kt in the afternoon. 
Gusts to 40 kt near Whittier diminishing to 30 kt in the afternoon. 
Seas 5 ft. 
.TONIGHT...W wind 20 kt diminishing to 10 kt after midnight. 
Gusts to 30 kt near Whittier in the evening. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT...W wind 15 kt. Seas 2 ft.
.SUN...Variable wind 10 kt. Seas 2 ft.
.MON...W wind 20 kt. Seas 3 ft.
.TUE...E wind 10 kt. Seas 2 ft.

$$

PKZ130-250215-
West of Barren Islands including Kamishak Bay-
353 AM AKST Fri Dec 24 2021

...GALE WARNING TODAY...

.TODAY...NW wind 40 kt diminishing to 25 kt in the afternoon. 
Seas 15 ft subsiding to 8 ft in the afternoon.
.TONIGHT...NW wind 15 kt. Seas 4 ft.
.SAT...NW wind 15 kt in the morning becoming variable 10 kt. 
Seas 3 ft.
.SAT NIGHT...W wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...W wind 30 kt. Seas 9 ft.
.TUE...W wind 20 kt. Seas 4 ft.

$$

PKZ131-250215-
Barren Islands East-
353 AM AKST Fri Dec 24 2021

...GALE WARNING TODAY...

.TODAY...NW wind 40 kt diminishing to 25 kt by afternoon. 
Seas 12 ft.
.TONIGHT...NW wind 20 kt. Seas 6 ft.
.SAT...W wind 20 kt. Seas 5 ft.
.SAT NIGHT...W wind 25 kt. Seas 5 ft.
.SUN THROUGH MON...W wind 35 kt. Seas 11 ft.
.TUE...W wind 25 kt. Seas 9 ft.

$$

PKZ132-250215-
Marmot Island to Sitkinak-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NW wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 12 ft.
.TONIGHT...SW wind increasing to 25 kt, except Variable 15 kt 
N of Dangerous Cape. Seas 7 ft.
.SAT...W wind 25 kt, except W 15 kt N of Dangerous Cape. 
Seas 8 ft.
.SAT NIGHT...W wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...W wind 30 kt. Seas 13 ft.
.TUE...W wind 25 kt. Seas 10 ft.

$$

PKZ136-250215-
Chiniak Bay-
353 AM AKST Fri Dec 24 2021

.TODAY...NW wind 15 kt. Seas 3 ft.
.TONIGHT AND SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT...S wind 10 kt. Seas 2 ft.
.SUN...SW wind 25 kt. Seas 4 ft.
.MON...W wind 20 kt. Seas 3 ft.
.TUE...W wind 15 kt. Seas 2 ft.

$$

PKZ137-250215-
Marmot Bay-
353 AM AKST Fri Dec 24 2021

.TODAY...NW wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 3 ft.
.TONIGHT...W wind 10 kt. Seas 2 ft.
.SAT...W wind 10 kt increasing to 15 kt in the afternoon. 
Seas 3 ft.
.SAT NIGHT...W wind 15 kt. Seas 3 ft.
.SUN...W wind 30 kt. Seas 6 ft.
.MON...W wind 25 kt. Seas 4 ft.
.TUE...W wind 15 kt. Seas 2 ft.

$$

PKZ138-250215-
Shelikof Strait-
353 AM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TODAY AND SATURDAY...

.TODAY...W wind 25 kt becoming SW 15 kt in the afternoon. 
Gusts to 40 kt out of bays and passes early. Seas 5 ft.
.TONIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...SW wind 25 kt. Seas 7 ft.
.SAT NIGHT...SW wind 25 kt. Seas 8 ft.
.SUN...SW wind 30 kt. Seas 9 ft.
.MON THROUGH TUE...SW wind 25 kt. Seas 8 ft.

$$

PKZ139-250215-
Cook Inlet Kalgin Island to Point Bede-
353 AM AKST Fri Dec 24 2021

.TODAY...N wind to 15 kt. Seas 4 ft.
.TONIGHT...N wind 15 kt. Seas 4 ft.
.SAT...N wind 15 kt becoming NE 10 kt in the afternoon. 
Seas 3 ft.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 30 kt. Seas 8 ft.
.MON...N wind 25 kt. Seas 4 ft.
.TUE...W wind 15 kt. Seas 3 ft.

$$

PKZ140-250215-
Cook Inlet North of Kalgin Island-
353 AM AKST Fri Dec 24 2021

.TODAY...N wind 10 kt in the morning becoming 
variable less than 10 kt.
.TONIGHT AND SAT...NE wind 10 kt.
.SAT NIGHT...Variable wind less than 10 kt.
.SUN...S wind 25 kt.
.MON THROUGH TUE...NE wind 10 kt.

$$

PKZ141-250215-
Kachemak Bay-
353 AM AKST Fri Dec 24 2021

.TODAY...NE wind 15 kt diminishing to 10 kt in the afternoon. 
Seas 2 ft, except 4 ft outer bay.
.TONIGHT...NE wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.SAT...W wind 10 kt in the morning becoming variable less than
10 kt. Seas 2 ft.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN...SW wind 25 kt. Seas 8 ft.
.MON...NW wind 15 kt. Seas 4 ft.
.TUE...W wind 10 kt. Seas 2 ft.

$$
634 
FZAK51 PAFC 250002
CWFAER

Coastal Waters Forecast
National Weather Service Anchorage Alaska
302 PM AKST Fri Dec 24 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.

PKZ197-251245-
302 PM AKST Fri Dec 24 2021
.SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+
COOK INLET...

High pressure will continue across the western Gulf. A weak low 
will the develop across the northern Gulf Sat night and move into 
the eastern Gulf and weaken Sun afternoon. Another weak low will 
develop Sun afternoon across the northern Gulf.

$$

PKZ119-251245-
Cape Suckling to Cape Cleare-
302 PM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 25 kt becoming E 15 kt after midnight. Seas 7
ft.
.SAT...NE wind 15 kt. Seas 4 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 5 ft.
.SUN...SW wind 20 kt except E 15 kts along the coast E of Montague
Island. Seas 6 ft.
.SUN NIGHT...NW wind 30 kt. Seas 8 ft.
.MON...N wind 20 kt. Seas 11 ft.
.TUE...W wind 15 kt. Seas 8 ft.
.WED...W wind 30 kt. Seas 15 ft.

$$

PKZ120-251245-
Cape Cleare to Gore Point-
302 PM AKST Fri Dec 24 2021

.TONIGHT...NE wind 15 kt becoming W after midnight. Seas 6 ft.
.SAT...E wind 15 kt. Seas 4 ft.
.SAT NIGHT...Variable wind 10 kt becoming SW 15 kt after midnight.
Seas 5 ft.
.SUN...SW wind 30 kt. Seas 7 ft.
.SUN NIGHT...W wind 35 kt. Seas 11 ft.
.MON...NW wind 35 kt. Seas 12 ft.
.TUE...W wind 20 kt. Seas 7 ft.
.WED...W wind 30 kt. Seas 11 ft.

$$

PKZ121-251245-
Resurrection Bay-
302 PM AKST Fri Dec 24 2021

.TONIGHT...N wind 20 kt diminishing to 10 kt after midnight. Seas
4 ft subsiding to 2 ft after midnight. Freezing spray.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT...N wind 10 kt. Seas 2 ft.
.SUN...Variable wind 15 kt. Seas 3 ft.
.SUN NIGHT...N wind 15 kt. Seas 3 ft.
.MON...N wind 15 kt. Seas 3 ft.
.TUE...Variable wind 10 kt. Seas 2 ft.
.WED...N wind 15 kt. Seas 3 ft.

$$

PKZ125-251245-
Prince William Sound-
302 PM AKST Fri Dec 24 2021

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

$$

PKZ126-251245-
Port Valdez-
302 PM AKST Fri Dec 24 2021

.TONIGHT...E wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN AND SUN NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.MON THROUGH WED...NE wind 10 kt. Seas 2 ft.

$$

PKZ127-251245-
Valdez Narrows-
302 PM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NE wind 25 kt. Seas 3 ft. Freezing spray.
.SAT...NE wind 15 kt. Seas 3 ft. Freezing spray.
.SAT NIGHT...NE wind 15 kt. Seas 3 ft.
.SUN AND SUN NIGHT...NE wind 20 kt. Seas 3 ft.
.MON...NE wind 25 kt. Seas 3 ft.
.TUE THROUGH WED...NE wind 30 kt. Seas 3 ft.

$$

PKZ128-251245-
Valdez Arm-
302 PM AKST Fri Dec 24 2021

.TONIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray.
.SAT...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas
3 ft.
.SAT NIGHT...NE wind 10 kt. Seas 2 ft.
.SUN...NE wind 10 kt. Seas 2 ft.
.SUN NIGHT...NE wind 15 kt. Seas 3 ft.
.MON THROUGH WED...NE wind 20 kt. Seas 4 ft.

$$

PKZ129-251245-
Passage Canal-
302 PM AKST Fri Dec 24 2021

.TONIGHT...W wind 20 kt. Seas 2 ft. Freezing spray.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT...W wind 10 kt. Seas 2 ft. Snow.
.SUN...E wind 15 kt. Seas 2 ft.
.SUN NIGHT...W wind 20 kt. Seas 2 ft.
.MON...W wind 20 kt. Seas 3 ft.
.TUE...E wind 10 kt. Seas 2 ft.
.WED...W wind 10 kt. Seas 2 ft.

$$

PKZ130-251245-
West of Barren Islands including Kamishak Bay-
302 PM AKST Fri Dec 24 2021

.TONIGHT...Variable wind 10 kt. Seas 3 ft.
.SAT...NE wind 15 kt. Seas 3 ft.
.SAT NIGHT...W wind 15 kt. Seas 4 ft.
.SUN AND SUN NIGHT...W wind 30 kt. Seas 8 ft.
.MON...W wind 30 kt. Seas 8 ft.
.TUE...W wind 20 kt. Seas 4 ft.
.WED...W wind 30 kt. Seas 7 ft.

$$

PKZ131-251245-
Barren Islands East-
302 PM AKST Fri Dec 24 2021

.TONIGHT...W wind 20 kt. Seas 6 ft.
.SAT...NW wind 20 kt in the morning becoming variable 10 kt. Seas
5 ft.
.SAT NIGHT...NW wind 15 kt. Seas 5 ft.
.SUN...SW wind 30 kt. Seas 7 ft.
.SUN NIGHT...W wind 30 kt. Seas 11 ft.
.MON...W wind 30 kt. Seas 10 ft.
.TUE...W wind 25 kt. Seas 9 ft.
.WED...W wind 30 kt. Seas 13 ft.

$$

PKZ132-251245-
Marmot Island to Sitkinak-
302 PM AKST Fri Dec 24 2021

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

.TONIGHT...W wind 25 kt. Seas 8 ft.
.SAT...W wind 25 kt. Seas 8 ft.
.SAT NIGHT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 30 kt. Seas 10 ft.
.SUN NIGHT...W wind 35 kt. Seas 13 ft.
.MON...W wind 30 kt. Seas 13 ft.
.TUE...W wind 25 kt. Seas 10 ft.
.WED...W wind 30 kt. Seas 12 ft.

$$

PKZ136-251245-
Chiniak Bay-
302 PM AKST Fri Dec 24 2021

.TONIGHT...Variable wind less than 10 kt. Seas 3 ft.
.SAT...SE wind 10 kt in the morning becoming variable less than
10 kt. Seas 3 ft.
.SAT NIGHT...Variable less than 10 kt. Seas 3 ft.
.SUN...S wind 25 kt. Seas 3 ft.
.SUN NIGHT...W wind 25 kt. Seas 4 ft.
.MON...W wind 20 kt. Seas 3 ft.
.TUE...W wind 15 kt. Seas 2 ft.
.WED...W wind 20 kt. Seas 3 ft.

$$

PKZ137-251245-
Marmot Bay-
302 PM AKST Fri Dec 24 2021

.TONIGHT...Variable wind less than 10 kt becoming W 10 kt after
midnight. Seas 2 ft.
.SAT...W wind 15 kt. Seas 3 ft.
.SAT NIGHT...W wind 15 kt diminishing to 10 kt after midnight.
Seas 3 ft.
.SUN AND SUN NIGHT...W wind 30 kt. Seas 6 ft.
.MON...W wind 25 kt. Seas 5 ft.
.TUE...W wind 15 kt. Seas 2 ft.
.WED...W wind 20 kt. Seas 4 ft.

$$

PKZ138-251245-
Shelikof Strait-
302 PM AKST Fri Dec 24 2021

...SMALL CRAFT ADVISORY SATURDAY AND SATURDAY NIGHT...

.TONIGHT...SW wind 20 kt. Seas 4 ft.
.SAT...SW wind 25 kt. Seas 5 ft.
.SAT NIGHT...SW wind 25 kt. Seas 8 ft.
.SUN...SW wind 35 kt. Seas 11 ft.
.SUN NIGHT...SW wind 30 kt. Seas 9 ft.
.MON...W wind 25 kt. Seas 8 ft.
.TUE THROUGH WED...W wind 25 kt. Seas 5 ft.

$$

PKZ139-251245-
Cook Inlet Kalgin Island to Point Bede-
302 PM AKST Fri Dec 24 2021

.TONIGHT...NE wind 10 kt becoming N 15 kt after midnight. Seas 3
ft.
.SAT...N wind 15 kt. Seas 4 ft.
.SAT NIGHT...Variable wind less than 10 kt becoming NE 10 kt after
midnight. Seas 2 ft.
.SUN AND SUN NIGHT...SW wind 30 kt. Seas 9 ft.
.MON...N wind 20 kt. Seas 4 ft.
.TUE...W wind 15 kt. Seas 3 ft.
.WED...W wind 20 kt. Seas 5 ft.

$$

PKZ140-251245-
Cook Inlet North of Kalgin Island-
302 PM AKST Fri Dec 24 2021

.TONIGHT...NE wind 10 kt increasing to 15 kt after midnight.
.SAT...NE wind 10 kt.
.SAT NIGHT...NE wind 10 kt in the evening becoming variable less
than 10 kt.
.SUN...NE wind 20 kt.
.SUN NIGHT...SW wind 20 kt.
.MON THROUGH TUE...NE wind 10 kt.
.WED...SW wind 10 kt.

$$

PKZ141-251245-
Kachemak Bay-
302 PM AKST Fri Dec 24 2021

.TONIGHT...NE wind 10 kt in the evening becoming variable less
than 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SAT NIGHT...Variable wind less than 10 kt. Seas 2 ft.
.SUN AND SUN NIGHT...SW wind 20 kt. Seas 6 ft.
.MON...NW wind 15 kt. Seas 4 ft.
.TUE...W wind 10 kt. Seas 2 ft.
.WED...W wind 20 kt. Seas 6 ft.

$$

What forecasters said that day

The local office's own words before this small craft advisory 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 small craft advisory went out at Dec 23, 5:16 AM AKST, 10 hours 29 minutes earlier.

Area forecast discussion, Dec 23, 5:16 AM AKST, 10 hours 29 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
516 AM AKST Thu Dec 23 2021

.ANALYSIS AND UPPER LEVELS...

A ridge of high pressure remains draped across the western
Aleutians extending into Southcentral. A 155 kt westerly jet
streak is placed over the Southwest Alaska, while a 120 kt
northerly jet streak is located over the eastern Gulf. With the
main flow over Southwest Alaska being southwesterly, moisture and
warmer air is being pulled from the North Pacific to the
Southwest and Aleutians. The 00Z Anchorage sounding shows a very
dry layer in the lower to mid- levels of the atmosphere, with a
small fully saturated layer remaining next to ground level. This
accounts for the lower-level clouds in the area this morning as
the moisture is trapped in the lower levels. Over Southcentral, a
lee- side trough has developed and a low has positioned itself in
the Gulf. This aforementioned lee- side low is beginning to pull
winds from the north and cause small craft winds through the
Barren Islands as seen on the Scatterometer this morning. The draw
of northerly winds along with cold air advection is beginning to
dry and scour out low-level clouds over Southcentral. Satellite
imagery is starting to show clearing over Palmer, Homer, and
Kodiak. Radar is showing returns over eastern Prince william Sound
and Cordova as this fast moving precipitation moves farther southeast
this morning.

&&

.MODEL DISCUSSION...

The models remain in good agreement on the large-scale features
impacting southern Alaska. The primary point of disagreement
continues to be precipitation type with the next front expected
to move into Southwest Alaska as early as Friday afternoon. Any
mixed precipitation type for this next system should be a short
transition as the atmospheric column of air is not as cold as the
last system, and the turning of winds becoming more southerly
will draw warmer air to the areas. Another forecast challenge is
the timing of when snow may begin in Anchorage. Snow will have to
saturate a dry atmosphere and forecasting when this could exactly
happen is difficult. However, overall forecast confidence is
good.

&&

.AVIATION...
PANC...VFR to MVFR conditions are expected to persist as
lingering moisture will result in a period of lower ceilings.
However, as strong northwesterly winds develop aloft behind the
low, that should help to start clearing the terminal and return
the area to VFR conditions.

&&.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3/Today
through Saturday night)...

Very strong west to northwest flow over top of a strong subtropical
ridge sitting over the North Pacific combined with surface pressure
gradients will lead to widespread gales across the Gulf coastal
waters through this evening, with smaller areas of embedded storm
force winds. The more westerly direction (as opposed to the more
frequent northwesterlies so far this winter) will allow winds to
move into much of southern Cook Inlet and continue eastward along
Kachemak Bay and the Homer area. The upper level ridge will
rapidly amplify over the Bering Sea today through tonight.
This will shift flow over Southcentral from westerly to north-
northwest, helping to drive arctic air from Interior Alaska
southward across Southcentral and into the Gulf of Alaska. Thus,
also expect strengthening gap winds along the north Gulf coast
and Prince William Sound. Short-waves riding over top of the upper
ridge will enhance subsidence and winds along the coast. Winds
will diminish Friday-Friday night as the upper ridge builds
eastward over Southcentral and the Gulf.

Meanwhile, the aforementioned upper level short-waves and westerly
flow will produce some localized areas of snow along west facing
mountains today. As the flow veers toward the north tonight,
subsidence and cold and dry air advection will bring an end to
the snow. The next chance for precipitation will come Friday night
through Saturday night as a series of short-waves track over the
ridge. At this point in time, none of these short-waves look
particularly strong and they will be moving quite fast. Therefore,
if it does precipitate, it will be brief and light in nature. As
the heights rise aloft, low level temperatures will warm - with
850 mb temperatures likely rising above freezing by Saturday night
for all except the Copper River Basin and northern Susitna Valley.
This is the perfect recipe for freezing rain if it were to
precipitate. Chances are though, it will remain dry for most of
the region for Christmas Day.

&&

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

The Alaska Peninsula remains relatively calm this morning with
diminished winds and dry conditions extending from Port Heiden to
Cold Bay. Satellite imagery shows a band of low-level stratus and
fog stretching from Iliamna to Port Heiden due to southwest winds
pushing a warmer air mass into the Aleutian Range. Further north
and to the west, radar is showing an area of light snow from east
of Bethel into Aniak and down to Kilbuck. A subtle shortwave
disturbance is skirting the region within broad northwesterly flow
aloft. This activity is not expected to result in any meaningful
accumulations and should gradually diminish later this evening.

After an extended period of rain and freezing rain on Wednesday,
Thursday will prove less eventful across Southwest. However, a low
lifting across the Bering will bring another warm front into
Southwest on Friday with a warming trend and another chance for
freezing rain. There are some discrepancies within model guidance
as to timing of the warm front and precipitation into Southwest,
but general thinking is for precipitation to move into Southwest
Friday during the morning hours. Precipitation preceding the
arrival of warmer air will pose at least a small window for
potential freezing rain, and roads and surfaces could become slick
through the morning hours. Steady west to southwest winds
accompanying the front will help to push colder temperatures out
of the region and any freezing rain should transition to all rain
by late afternoon if not sooner. The best threat of freezing rain
will exist over the Kuskokwim Delta but the threat may also
present itself further south into Bristol Bay. A second round of
showers is then forecast on Friday night into Saturday morning as
shortwave trough digs southeastward and into the Gulf of Alaska.

&&

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

Generally benign conditions are ongoing across the Bering and the
Aleutian Chain this morning. A North Pacific High remains south
of the Eastern Aleutians and the Alaska Peninsula with a shortwave
ridge expected to translate across the Pribilof Islands into the
Kuskokwim Delta later this evening. As a result, southerly winds
will remain at or below 20 knots with minimal shower chances. A
steady stream of southwest flow across the Aleutians will help to
keep temperatures above freezing for the next few days. The next
shortwave trough will track through the Bering on Friday with a
swath of 30 to 35 knot winds forecast to lift over the Central and
Eastern Aleutians before diminishing near Nunivak Island Friday
night. A second, yet stronger upper low, will lift out of the
North Pacific and into the western Bering on Saturday. Widespread
gales are forecast to develop from the Aleutians northward toward
Saint Matthew Island. This area of winds should exit the Bering
Saturday night as the associated upper low moves into the Chukchi
Sea.

&&

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

Bering...A well developed North Pacific low intensifies as it
moves to North Kamchatka Sunday, then weakens as it continues into
the Chukchi Sea by Monday. A front extends across the Western
Aleutians through Monday. Forecast confidence is moderate for the
low tracks through Monday. Gusty winds increase to widespread high
end gales with areas of storm force winds across the Western and
Central Bering late Sunday, diminishing Monday as it moves into
the Chukchi Sea. Seas building to 22 feet over the Bering Sunday,
subsiding Monday. A new North Pacific low approaches the Western
Bering late Sunday. Widespread high end gales with areas of storm
force winds spread to the Central Bering by Monday. Seas building
to 34 feet over the Western Bering, and to 22 feet for the Pacific
side of the Aleutians through Monday.

Gulf of Alaska...Low pressure continues over the Eastern Gulf
through Monday. Forecast confidence is moderate with pressure
differences over the Gulf. Gusty Westerly winds spread across the
Southwestern Gulf through Monday. Gap winds from the Alaska
Peninsula increase to gales into the Gulf for Monday. Seas
building to 12 feet over the Southern Gulf by Monday.

&&

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

Global models share very similar large scale synoptic solutions
consisting of the Omega Blocking pattern and the onset of a few
strong Northwest Pacific and Siberian lows transiting across the
Bering into Southwest Alaska through the middle of next week.
Multiple fronts will bring gales and potentially near storm-force
winds across the Bering/Aleutians through much of the long term.
Considering the warm tropical moisture and warm southwest winds
pulling behind the fronts, the potential for rainfall is favorable
over the Aleutians/Bering, with rain/snow mix more inland of
Southwest Alaska from the expected frontal systems. P-type
forecast could be a challenge, but as solutions continue to
improve over time, perhaps we'll see better P-type agreements in
future model runs. Over the Gulf and Southcentral, latest solutions
suggest very light snow to an absolutely quiet pattern there
until Wednesday when a transitional front turned-into an open
trough shifts over the western Gulf, leading to increased NW winds
along the Shelikof Strait and Kamishak Bay through the Barren
Islands. The potential for gap winds is favorable as well over
Southcentral coastal areas should weakening fronts from Southwest
Alaska drives past the Alaska Range into Southcentral. For now,
will monitor these episodes closely.

The upper ridge axis will provide mostly clear skies and light
winds at night as it drifts from Southwest to Southcentral through
Wednesday. The potential for widespread foggy conditions should be
closely monitored as well especially when there's subsidence air
passing through the entirety of the forecast period.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Storm Warning: 131, 351.
	     Gale Warning: 119-125, 127, 129, 130, 132, 136-139, 141,
		 173, 175-177, 352, 413.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...NS
SOUTHCENTRAL ALASKA...SB
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...BL
MARINE/LONG TERM...MK/CB

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 23, 3:33 PM AKSTGale WarningAFC12 hr
Dec 23, 3:45 PM AKSTGale WarningAFC23 hr
Dec 23, 3:55 PM AKSTGale WarningAFC5 days
Dec 23, 3:57 PM AKSTWinter Weather AdvisoryAFC45 hr
Dec 24, 3:53 AM AKSTSmall Craft AdvisoryAFC24 hr
Dec 24, 3:55 AM AKSTSmall Craft AdvisoryAFC12 hr
Dec 24, 10:21 AM AKSTWinter Storm WatchAFC29 hr

Nearby

Small Craft Advisories in Alaska, 2021Every small craft advisory 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.