Gale Warning 830, NWS Anchorage, AK

180 
FZAK52 PAFC 120000
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
300 PM AKST Thu Dec 11 2025

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent an average of the highest
one-third of the combined wind wave and swell height.

PKZ199-121245-
300 PM AKST Thu Dec 11 2025
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A strong area of high pressure remains over the Bering Sea 
through Sun morning.

$$

PKZ750-121245-
Sitkinak to Castle Cape out to 15 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 4 ft.
.FRI...NW wind 25 kt becoming N 35 kt in the afternoon. 
Seas 3 ft building to 7 ft in the afternoon.
.FRI NIGHT...N wind 35 kt becoming NW 45 kt after midnight. 
Seas 12 ft. Freezing spray.
.SAT...N wind 50 kt. Seas 12 ft.
.SAT NIGHT...N wind 45 kt. Seas 11 ft.
.SUN THROUGH MON...NW wind 40 kt. Seas 9 ft.
.TUE...NW wind 45 kt. Seas 10 ft.

$$

PKZ751-121245-
Sitkinak to Castle Cape from 15 to 100 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 8 ft.
.FRI...N wind 25 kt increasing to 35 kt in the afternoon. 
Seas 7 ft.
.FRI NIGHT...N wind 45 kt. Seas 17 ft.
.SAT AND SAT NIGHT...N wind 50 kt. Seas 19 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 16 ft.
.TUE...NW wind 40 kt. Seas 17 ft.

$$

PKZ752-121245-
Castle Cape to Cape Tolstoi out to 15 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 2 ft.
.FRI...N wind 20 kt increasing to 30 kt in the afternoon. 
Seas 3 ft.
.FRI NIGHT...N wind 35 kt. Seas 7 ft.
.SAT AND SAT NIGHT...N wind 45 kt. Seas 9 ft.
.SUN...N wind 45 kt. Seas 8 ft.
.MON...NW wind 40 kt. Seas 7 ft.
.TUE...NW wind 35 kt. Seas 4 ft.

$$

PKZ753-121245-
Castle Cape to Cape Tolstoi from 15 to 100 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 7 ft.
.FRI...NE wind 25 kt becoming N 35 kt in the afternoon. 
Seas 8 ft.
.FRI NIGHT...NE wind 40 kt. Seas 16 ft.
.SAT AND SAT NIGHT...N wind 50 kt. Seas 21 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 17 ft.
.TUE...NW wind 40 kt. Seas 13 ft.

$$

PKZ754-121245-
Cape Tolstoi to Cape Sarichef out to 15 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 2 ft.
.FRI...N wind 25 kt increasing to 35 kt in the afternoon. 
Seas 4 ft.
.FRI NIGHT...N wind 35 kt. Seas 6 ft.
.SAT AND SAT NIGHT...N wind 40 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 9 ft.
.TUE...NW wind 35 kt. Seas 5 ft.

$$

PKZ755-121245-
Cape Tolstoi to Cape Sarichef from 15 to 100 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...N wind 25 kt. Seas 6 ft.
.FRI...N wind 30 kt. Seas 8 ft.
.FRI NIGHT...NE wind 35 kt. Seas 12 ft.
.SAT AND SAT NIGHT...N wind 45 kt. Seas 17 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 16 ft.
.TUE...NW wind 40 kt. Seas 12 ft.

$$

PKZ756-121245-
Port Heiden to Nelson Lagoon out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 3 ft.
.FRI...N wind 20 kt increasing to 30 kt in the afternoon. 
Seas 6 ft.
.FRI NIGHT...NE wind 30 kt. Seas 9 ft.
.SAT AND SAT NIGHT...N wind 40 kt. Seas 12 ft.
.SUN THROUGH MON...N wind 45 kt. Seas 14 ft.
.TUE...NW wind 35 kt. Seas 12 ft.

$$

PKZ757-121245-
Port Heiden to Nelson Lagoon from 15 to 60 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 3 ft.
.FRI...N wind 20 kt increasing to 30 kt in the afternoon. 
Seas 7 ft.
.FRI NIGHT...N wind 30 kt. Seas 10 ft.
.SAT AND SAT NIGHT...N wind 35 kt. Seas 12 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 16 ft.
.TUE...NW wind 35 kt. Seas 13 ft.

$$

PKZ758-121245-
Nelson Lagoon to Cape Sarichef out to 15 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 4 ft.
.FRI...N wind 20 kt becoming NE 30 kt in the afternoon. 
Seas 7 ft.
.FRI NIGHT...NE wind 35 kt. Seas 9 ft.
.SAT AND SAT NIGHT...N wind 40 kt. Seas 13 ft.
.SUN...N wind 50 kt. Seas 17 ft.
.MON...NW wind 45 kt. Seas 16 ft.
.TUE...NW wind 35 kt. Seas 14 ft.

$$

PKZ759-121245-
Nelson Lagoon to Cape Sarichef from 15 to 70 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 4 ft.
.FRI...N wind 20 kt becoming NE 30 kt in the afternoon. 
Seas 7 ft.
.FRI NIGHT...NE wind 30 kt. Seas 10 ft.
.SAT AND SAT NIGHT...N wind 35 kt. Seas 13 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 18 ft.
.TUE...NW wind 35 kt. Seas 15 ft.

$$

PKZ770-121245-
Cape Sarichef to Nikolski Bering Side out to 15 NM-
300 PM AKST Thu Dec 11 2025

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas 5 ft.
.FRI...NE wind 25 kt increasing to 35 kt in the afternoon. 
Seas 7 ft.
.FRI NIGHT...NE wind 35 kt. Seas 10 ft.
.SAT...NE wind 30 kt. Seas 11 ft.
.SAT NIGHT...N wind 35 kt. Seas 11 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 16 ft.
.TUE...NW wind 35 kt. Seas 15 ft.

$$

PKZ772-121245-
Cape Sarichef to Nikolski Bering Side from 15 to 85 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 5 ft.
.FRI...NE wind 20 kt increasing to 30 kt in the afternoon. 
Seas 7 ft.
.FRI NIGHT...NE wind 30 kt. Seas 10 ft.
.SAT...NE wind 25 kt. Seas 10 ft.
.SAT NIGHT...N wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...NW wind 40 kt. Seas 17 ft.
.TUE...NW wind 35 kt. Seas 14 ft.

$$

PKZ771-121245-
Unalaska Bay-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N wind 10 kt increasing to 15 kt after midnight. 
Seas 4 ft.
.FRI...N wind 25 kt. Seas 6 ft.
.FRI NIGHT...NE wind 25 kt. Seas 9 ft.
.SAT...N wind 25 kt. Seas 9 ft.
.SAT NIGHT...N wind 30 kt. Seas 10 ft.
.SUN THROUGH MON...NW wind 35 kt. Seas 15 ft.
.TUE...NW wind 30 kt. Seas 10 ft.

$$

PKZ773-121245-
Cape Sarichef to Nikolski Pacific Side out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 3 ft.
.FRI...N wind 30 kt. Seas 5 ft.
.FRI NIGHT...NE wind 30 kt. Seas 7 ft.
.SAT...N wind 30 kt. Seas 8 ft.
.SAT NIGHT...N wind 35 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 50 kt. Seas 9 ft.
.TUE...NW wind 40 kt. Seas 6 ft.

$$

PKZ774-121245-
Cape Sarichef to Nikolski Pacific Side from 15 to 85 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 5 ft.
.FRI...NE wind 30 kt. Seas 8 ft.
.FRI NIGHT...NE wind 30 kt. Seas 11 ft.
.SAT...N wind 30 kt. Seas 14 ft.
.SAT NIGHT...N wind 35 kt. Seas 14 ft.
.SUN THROUGH MON...NW wind 45 kt. Seas 15 ft.
.TUE...NW wind 35 kt. Seas 12 ft.

$$

PKZ775-121245-
Nikolski to Seguam Bering Side out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 4 ft.
.FRI...NE wind 25 kt. Seas 7 ft.
.FRI NIGHT...NE wind 30 kt. Seas 10 ft.
.SAT AND SAT NIGHT...N wind 25 kt. Seas 9 ft.
.SUN THROUGH MON...NW wind 40 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 12 ft.

$$

PKZ776-121245-
Nikolski to Seguam Bering Side from 15 to 85 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 4 ft.
.FRI...NE wind 25 kt. Seas 6 ft.
.FRI NIGHT...NE wind 25 kt. Seas 10 ft.
.SAT...NE wind 20 kt. Seas 10 ft.
.SAT NIGHT...N wind 20 kt. Seas 7 ft.
.SUN...N wind 35 kt. Seas 12 ft.
.MON THROUGH TUE...N wind 30 kt. Seas 12 ft.

$$

PKZ777-121245-
Nikolski to Seguam Pacfic Side out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N wind 15 kt. Seas 4 ft.
.FRI...NE wind 25 kt. Seas 8 ft.
.FRI NIGHT...NE wind 30 kt. Seas 10 ft.
.SAT...NE wind 20 kt. Seas 9 ft.
.SAT NIGHT...N wind 25 kt. Seas 8 ft.
.SUN THROUGH MON...NW wind 40 kt. Seas 10 ft.
.TUE...NW wind 30 kt. Seas 9 ft.

$$

PKZ778-121245-
Nikolski to Seguam Pacific Side from 15 to 75 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 15 kt. Seas 5 ft.
.FRI...NE wind 20 kt. Seas 8 ft.
.FRI NIGHT...NE wind 25 kt. Seas 11 ft.
.SAT AND SAT NIGHT...N wind 25 kt. Seas 12 ft.
.SUN THROUGH MON...NW wind 40 kt. Seas 13 ft.
.TUE...NW wind 30 kt. Seas 11 ft.

$$

PKZ780-121245-
Seguam to Adak Bering Side out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...SE wind 20 kt. Seas 3 ft.
.FRI...E wind 20 kt. Seas 4 ft.
.FRI NIGHT...NE wind 25 kt. Seas 6 ft.
.SAT...E wind 20 kt. Seas 7 ft.
.SAT NIGHT...NE wind 15 kt. Seas 6 ft.
.SUN...N wind 30 kt. Seas 8 ft.
.MON...NW wind 25 kt. Seas 9 ft.
.TUE...N wind 20 kt. Seas 9 ft.

$$

PKZ781-121245-
Seguam to Adak Bering Side from 15 to 85 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...SE wind 15 kt. Seas 5 ft.
.FRI...E wind 20 kt. Seas 4 ft.
.FRI NIGHT...E wind 25 kt. Seas 7 ft.
.SAT...E wind 20 kt. Seas 8 ft.
.SAT NIGHT...E wind 15 kt. Seas 7 ft.
.SUN THROUGH MON...NW wind 25 kt. Seas 10 ft.
.TUE...NE wind 20 kt. Seas 10 ft.

$$

PKZ782-121245-
Seguam to Adak Pacific Side out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...E wind 20 kt. Seas 6 ft.
.FRI...NE wind 20 kt. Seas 9 ft.
.FRI NIGHT...NE wind 25 kt. Seas 9 ft.
.SAT AND SAT NIGHT...NE wind 20 kt. Seas 8 ft.
.SUN...N wind 30 kt. Seas 7 ft.
.MON...NW wind 25 kt. Seas 6 ft.
.TUE...N wind 20 kt. Seas 5 ft.

$$

PKZ783-121245-
Seguam to Adak Pacific Side from 15 to 75 NM-
300 PM AKST Thu Dec 11 2025

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

.TONIGHT...E wind 20 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 10 ft.
.FRI NIGHT...NE wind 25 kt. Seas 10 ft.
.SAT...E wind 25 kt. Seas 10 ft.
.SAT NIGHT...NE wind 20 kt. Seas 11 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 12 ft.
.TUE...N wind 25 kt. Seas 9 ft.

$$

PKZ784-121245-
Adak to Kiska Bering Side-
300 PM AKST Thu Dec 11 2025

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

.TONIGHT...SE wind 25 kt. Seas 8 ft.
.FRI...SE wind 30 kt. Seas 11 ft.
.FRI NIGHT...SE wind 25 kt. Seas 10 ft.
.SAT AND SAT NIGHT...SE wind 20 kt. Seas 8 ft.
.SUN...NE wind 15 kt. Seas 8 ft.
.MON...NE wind 20 kt. Seas 7 ft.
.TUE...E wind 30 kt. Seas 9 ft.

$$

PKZ785-121245-
Adak to Kiska Pacific Side-
300 PM AKST Thu Dec 11 2025

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

.TONIGHT...SE wind 30 kt. Seas 10 ft building to 15 ft 
after midnight.
.FRI...SE wind 30 kt. Seas 16 ft.
.FRI NIGHT...E wind 20 kt. Seas 13 ft.
.SAT...E wind 25 kt. Seas 9 ft.
.SAT NIGHT...SE wind 20 kt. Seas 9 ft.
.SUN...NE wind 20 kt. Seas 13 ft.
.MON...NE wind 25 kt. Seas 10 ft.
.TUE...E wind 30 kt. Seas 12 ft.

$$

PKZ786-121245-
Kiska to Attu Bering Side-
300 PM AKST Thu Dec 11 2025

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SE wind 35 kt. Seas 9 ft building to 15 ft 
after midnight.
.FRI...SE wind 40 kt. Seas 22 ft.
.FRI NIGHT...SE wind 35 kt. Seas 21 ft.
.SAT...SE wind 30 kt. Seas 14 ft.
.SAT NIGHT...SE wind 25 kt. Seas 12 ft.
.SUN...SE wind 20 kt. Seas 12 ft.
.MON...E wind 35 kt. Seas 8 ft.
.TUE...SE wind 35 kt. Seas 15 ft.

$$

PKZ787-121245-
Kiska to Attu Pacific Side-
300 PM AKST Thu Dec 11 2025

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SE wind 30 kt increasing to 40 kt after midnight. 
Seas 15 ft building to 21 ft after midnight.
.FRI...SE wind 45 kt. Seas 28 ft.
.FRI NIGHT...SE wind 35 kt. Seas 24 ft.
.SAT...SE wind 30 kt. Seas 16 ft.
.SAT NIGHT...SE wind 25 kt. Seas 15 ft.
.SUN...SE wind 20 kt. Seas 14 ft.
.MON...E wind 40 kt. Seas 10 ft.
.TUE...SE wind 40 kt. Seas 17 ft.

$$

PKZ766-121245-
Pribilof Islands Nearshore Waters-
300 PM AKST Thu Dec 11 2025

.TONIGHT...SW wind 15 kt becoming NW 10 kt after midnight. 
Seas 7 ft.
.FRI AND FRI NIGHT...NE wind 20 kt. Seas 6 ft.
.SAT...NE wind 15 kt. Seas 6 ft.
.SAT NIGHT...NW wind 25 kt. Seas 6 ft.
.SUN THROUGH TUE...NW wind 30 kt. Seas 9 ft.

$$

PKZ760-121245-
Bristol Bay greater than 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...N wind 10 kt becoming NW 15 kt after midnight. 
Seas 2 ft.
.FRI...N wind 25 kt. Seas 5 ft. Freezing spray.
.FRI NIGHT...N wind 30 kt. Seas 7 ft. Freezing spray.
.SAT AND SAT NIGHT...N wind 35 kt. Seas 9 ft.
.SUN...N wind 40 kt. Seas 10 ft.
.MON...N wind 35 kt. Seas 10 ft.
.TUE...NW wind 30 kt. Seas 10 ft.

$$

PKZ761-121245-
Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NE wind 10 kt in the evening becoming variable 
less than 10 kt. Seas 2 ft.
.FRI...NW wind 15 kt becoming N 25 kt late. Seas 3 ft. 
Freezing  spray.
.FRI NIGHT...N wind 30 kt. Seas 6 ft. Freezing spray.
.SAT...N wind 40 kt. Seas 8 ft.
.SAT NIGHT...N wind 35 kt. Seas 9 ft.
.SUN THROUGH MON...N wind 40 kt. Seas 10 ft.
.TUE...N wind 25 kt. Seas 9 ft.

$$

PKZ762-121245-
Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...N wind 10 kt becoming NW 15 kt after midnight. 
Seas in ice free waters 2 ft.
.FRI...NW wind 20 kt. Seas in ice free waters 3 ft. Freezing spray.
.FRI NIGHT...N wind 25 kt. Seas in ice free waters 4 ft. Freezing 
spray.
.SAT AND SAT NIGHT...N wind 30 kt. Seas in ice free waters 4 ft.
.SUN...N wind 40 kt. Seas in ice free waters 5 ft.
.MON...N wind 35 kt. Seas in ice free waters 4 ft.
.TUE...NW wind 30 kt. Seas in ice free waters 4 ft.

$$

PKZ763-121245-
Kuskokwim Delta and Etolin Strait out to 15 NM-
300 PM AKST Thu Dec 11 2025

...BRISK WIND ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW wind 20 kt becoming NW after midnight.
.FRI AND FRI NIGHT...N wind 25 kt.
.SAT AND SAT NIGHT...N wind 30 kt.
.SUN...N wind 35 kt.
.MON...N wind 40 kt.
.TUE...NW wind 30 kt.

$$

PKZ764-121245-
Kuskokwim Delta from 15 to 80 NM-
300 PM AKST Thu Dec 11 2025

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...W wind 15 kt. Seas in ice free waters 5 ft.
.FRI...N wind increasing to 25 kt. Seas in ice free waters 6 ft.
.FRI NIGHT...N wind 30 kt. Seas in ice free waters 7 ft.
.SAT...N wind 30 kt. Seas in ice free waters 8 ft.
.SAT NIGHT...N wind 35 kt. Seas in ice free waters 8 ft.
.SUN THROUGH MON...NW wind 40 kt. Seas in ice free waters 12 ft.
.TUE...NW wind 35 kt. Seas in ice free waters 9 ft.

$$

PKZ765-121245-
North and West of Nunivak Island-
300 PM AKST Thu Dec 11 2025

.TONIGHT...SW wind 20 kt becoming NW after midnight. Rain and snow.
.FRI...NW wind 20 kt.
.FRI NIGHT...N wind 15 kt.
.SAT...Variable wind 10 kt.
.SAT NIGHT...NW wind 20 kt.
.SUN THROUGH MON...NW wind 30 kt.
.TUE...NW wind 25 kt.

$$

PKZ767-121245-
Saint Matthew Island Waters-
300 PM AKST Thu Dec 11 2025

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

.TONIGHT...W wind 25 kt. Seas 11 ft.
.FRI...N wind 15 kt E of Saint Matthew Island...SE 25 kt 
W of Saint Matthew Island. Seas 8 ft.
.FRI NIGHT...E wind 15 kt E of Saint Matthew Island...SE 25 kt 
W of Saint Matthew Island. Seas 9 ft.
.SAT...SW wind 20 kt. Seas 11 ft.
.SAT NIGHT...NW wind 20 kt. Seas 10 ft.
.SUN...NW wind 25 kt. Seas 8 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 9 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
430 PM AKST Wed Dec 10 2025

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

Key Messages:

- Gusty winds will continue through the extended forecast. The
  current round of winds will continue through Thu morning. Winds
  diminish for a brief period between Thu night through Fri
  morning. Winds increase again Fri night in Valdez, the Matanuska
  Valley, and the waters around Kodiak Island with lower
  confidence with how long those winds will remain elevated.

- Cold temperatures and wind chills are expected to persist until
  at least the end of this week. A Cold Weather Advisory is
  currently in effect through Fri afternoon for the Copper River
  Basin and through the Thompson Pass area.

- You can reduce your risk of hypothermia or frost bite by
  protecting your skin from exposure and wearing appropriate
  clothing while outdoors. Keep emergency supplies with you in
  your home and while traveling whenever possible. Consider
  wearing your cold weather gear while you are driving longer
  distances through frigid temperatures. Know the signs of
  hypothermia and check on others.

Discussion:

The forecast is characterized by a couple of key words: cold and
windy. An upper trough is currently passing through Southcentral
Alaska. This is allowing for gusty winds in gap areas including
Valdez, the waters around Kodiak Island, and the Matanuska Valley
near Palmer. However, due to the weaker nature of the trough,
these winds are not nearly as strong nor will they be as lengthy
as the prior event. Due to lighter winds and the presence of an
Arctic air mass, temperatures are dropping to the single digits
and negatives for inland areas. The Copper River Basin in
particular, is very cold with temperatures dropping to 40 to 50
below zero in some areas. As the trough moves out of the area to
the south, winds will gradually decrease by Thursday, becoming
mostly calm in the afternoon.

Friday morning continues the relatively calm, but very cold
conditions. However, by Friday afternoon, a strong upper trough
drops into Southcentral. The first effect of this trough is gusty
winds in Whittier and Seward, reaching over 40 mph through
Saturday. Then, gusty winds will return to the Matanuska Valley
and Valdez. The current thinking is that Valdez will have the
worst of the winds with gusts up to 50 to 60 mph by Saturday. The
Matanuska Valley will also see gusty winds, but these will likely
not be as severe nor as long lasting as the winds from last
weekend with gusts from 50 to 60 mph are expected. However, the
situation is still developing and could change on a dime. Another
round of cold air also arrives on Saturday. This air mass seems to
be colder than the previous one, so temperatures for next week
could be very cold. Another impact of this second round of Arctic
air is a larger temperature gradient between the ocean and land.
This means that gap winds especially in Valdez could linger on for
a longer period. The forecast could still change and conditions
could either look better or worse depending on the track of the
upper trough, so continue to monitor the forecast for updates.

JAR/Rux

&&

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

Conditions across Southwest Alaska and much of the Bering
Sea/Aleutians remains unchanged over the next few days. There
will be some warmer air moving over the Mainland Thursday
night/Friday, raising temperatures to mid 20's along the Kuskokwim
Delta and western Bristol Bay on Friday. The warming will be very
brief as the air mass passes through quickly and cold air filters
back in from the northeast to drop temperatures again over the
weekend. Mostly dry conditions will continue, the exception will
be inland Kuskokwim Delta and lower Kuskokwim Valley, as well as
along the Kilbuck/Kuskokwim Mountain ranges. Snow is expected
along the aforementioned areas Thursday night/Friday morning as a
shortwave skirts through. No significant snow accumulations are
expected. Gusty gap winds will continue south of the Alaska
Peninsula through tonight as cold air and a tighter pressure
gradient stays in place. Winds are expected to start letting up
Thursday afternoon with some warmer air moving in. Winds may pick
up again Friday night/Saturday once cold air returns. Further
west, a front moves over the Western Aleutians, bringing rounds of
gale force winds and rain Thursday night and Friday. The front
will not progress further eastwards due to high pressure holding
steady over the Bering Sea.

&&

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

This weekend, an expansive area of high pressure will be centered
over the northern Bering Sea and extend across the rest of the
Bering Sea. This high pressure will aid in pulling Arctic Air
south across the state, causing a trough to dig across the
southern mainland and around a low in the Gulf of Alaska. This
will create the potential for another round of prolonged high
winds through gaps and passes, cold temperatures, and wind
chills. A shortwave low will descend from eastern Russia Monday
afternoon, but remain offshore until it crosses the Alaska
Peninsula by Tuesday morning. A complex surface low in the Gulf of
Alaska could retrograde just enough early next week to bring some
light snow to the north Gulf coast and parts of the Copper River
Basin, but forecast confidence is still low. Otherwise, dry
conditions continue region-wide, which could persist for the next
several weeks as this general pattern of cold, dry weather looks
to stick around.

&&

.AVIATION...

PANC...VFR conditions will persist. Northerly winds are expected
to increase to 10 to 15 kt this evening through mid-day tomorrow
before decreasing tomorrow night.

&&