Gale Warning 801, NWS Anchorage, AK

359 
FZAK52 PAFC 220010
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
310 PM AKST Mon Dec 21 2020

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.

PKZ199-221330-
310 PM AKST Mon Dec 21 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 948 mb low 180 nm west of Saint Paul remains nearly stationary 
through Tue morning then moves to 110 nm northwest of Cape
Newenham by Wed afternoon. Its associated front stalls along the 
Southwest Alaska coast Mon afternoon before moving inland Mon
night. A 962 mb low forms along the front Mon evening 85 nm 
southwest of Hooper Bay then moves to then to 200 nm northwest of
Gambell by Wed morning and dissipates inland Wed afternoon.

$$

PKZ150-221330-
South of the AK Peninsula Sitkinak to Castle Cape-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 45 kt becoming SW 30 kt after midnight. Seas
27 ft. Widespread rain showers.
.TUE...SW wind 20 kt. Seas 19 ft.
.TUE NIGHT...SW wind 30 kt. Seas 17 ft.
.WED...SW wind 30 kt. Seas 17 ft.
.WED NIGHT...SE wind 25 kt. Seas 14 ft.
.THU...NE wind 30 kt. Seas 17 ft.
.FRI...NW wind 20 kt. Seas 12 ft.
.SAT...S wind 30 kt. Seas 10 ft.

$$

PKZ155-221330-
South of the AK Peninsula Castle Cape to Cape Sarichef-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 35 kt. Seas 20 ft.
.TUE...SW wind 30 kt diminishing to 20 kt in the afternoon. Seas
20 ft.
.TUE NIGHT...SW wind 30 kt. From the Shumagin Islands E, SW wind
20 kt increasing to 30 kt after midnight. Seas 19 ft.
.WED...SW wind 35 kt. Seas 18 ft.
.WED NIGHT...NW wind 20 kt. Seas 13 ft.
.THU...N wind 30 kt. Seas 13 ft.
.FRI...N wind 15 kt. Seas 10 ft.
.SAT...SE wind 30 kt. Seas 14 ft.

$$

PKZ160-221330-
Bristol Bay-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...SE wind 35 kt. Seas 8 ft. Rain and snow.
.TUE...S wind 20 kt. Seas 5 ft.
.TUE NIGHT...SW wind 10 kt increasing to 15 kt after midnight.
Seas 6 ft.
.WED...SW wind 25 kt. Seas 9 ft.
.WED NIGHT...S wind 20 kt. Seas 8 ft.
.THU...N wind 30 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...E wind 30 kt. Seas 6 ft.

$$

PKZ165-221330-
Port Heiden to Cape Sarichef-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...S wind 30 kt. Seas 9 ft.
.TUE...S wind 30 kt. Seas 11 ft.
.TUE NIGHT...SW wind 35 kt except S 25 kt from Port Moller E. Seas
18 ft except 12 ft from Port Moller E.
.WED...SW wind 30 kt. Seas 16 ft.
.WED NIGHT...W wind 20 kt. Seas 10 ft.
.THU...NE wind 30 kt. Seas 8 ft.
.FRI...NE wind 20 kt. Seas 11 ft.
.SAT...E wind 30 kt. Seas 10 ft.

$$

PKZ170-221330-
Cape Sarichef to Nikolski Bering Side-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 10 ft.
.TUE...SW wind 40 kt. Seas 19 ft.
.TUE NIGHT...SW wind 35 kt. Seas 21 ft. Snow showers and rain
showers.
.WED...W wind 30 kt. Seas 16 ft.
.WED NIGHT...W wind 15 kt. Seas 11 ft.
.THU...SE wind 20 kt. Seas 11 ft.
.FRI...NE wind 25 kt. Seas 14 ft.
.SAT...SE wind 30 kt. Seas 14 ft.

$$

PKZ171-221330-
Unalaska Bay-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY NIGHT...

.TONIGHT...S wind 20 kt. Seas 3 ft. Snow showers.
.TUE...SW wind 25 kt. Seas 4 ft.
.TUE NIGHT...SW wind 35 kt. Seas 5 ft. Snow showers.
.WED...W wind 30 kt. Seas 5 ft.
.WED NIGHT...W wind 15 kt. Seas 2 ft.
.THU...SE wind 10 kt. Seas 3 ft.
.FRI...SW wind 15 kt. Seas 2 ft.
.SAT...SE wind 20 kt. Seas 3 ft.

$$

PKZ172-221330-
Cape Sarichef to Nikolski Pacific Side-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT AND TUESDAY NIGHT...

.TONIGHT...SW wind 35 kt. Seas 23 ft.
.TUE...SW wind 30 kt. Seas 22 ft.
.TUE NIGHT...SW wind 35 kt. Seas 20 ft.
.WED...W wind 35 kt. Seas 18 ft.
.WED NIGHT...W wind 20 kt. Seas 11 ft.
.THU...S wind 15 kt. Seas 11 ft.
.FRI...W wind 25 kt. Seas 13 ft.
.SAT...SE wind 30 kt. Seas 20 ft.

$$

PKZ173-221330-
Nikolski to Seguam Island Bering Side-
310 PM AKST Mon Dec 21 2020

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 35 kt. Seas 12 ft building to 17 ft after
midnight.
.TUE...W wind 40 kt. Seas 23 ft.
.TUE NIGHT...W wind 40 kt. Seas 24 ft. Snow showers.
.WED...W wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 20 kt. Seas 11 ft.
.THU...SW wind 20 kt. Seas 14 ft.
.FRI...S wind 25 kt. Seas 14 ft.
.SAT...SE wind 30 kt. Seas 19 ft.

$$

PKZ174-221330-
Nikolski to Seguam Island Pacific Side-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 22 ft.
.TUE...W wind 35 kt. Seas 21 ft.
.TUE NIGHT...W wind 35 kt. Seas 21 ft.
.WED...W wind 30 kt. Seas 17 ft.
.WED NIGHT...SW wind 20 kt. Seas 12 ft.
.THU THROUGH FRI...SW wind 30 kt. Seas 17 ft.
.SAT...S wind 30 kt. Seas 25 ft.

$$

PKZ175-221330-
Seguam Island to Adak Bering Side-
310 PM AKST Mon Dec 21 2020

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 40 kt. Seas 20 ft.
.TUE...W wind 45 kt. Seas 24 ft.
.TUE NIGHT...W wind 40 kt diminishing to 30 kt after midnight.
Seas 23 ft. Freezing spray.
.WED...W wind 30 kt. Seas 15 ft.
.WED NIGHT...SW wind 20 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 18 ft.
.FRI...SE wind 30 kt. Seas 14 ft.
.SAT...S wind 30 kt. Seas 24 ft.

$$

PKZ176-221330-
Seguam Island to Adak Pacific Side-
310 PM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 21 ft.
.TUE...W wind 30 kt. Seas 19 ft.
.TUE NIGHT...W wind 25 kt. Seas 16 ft.
.WED...W wind 30 kt. Seas 13 ft.
.WED NIGHT...SW wind 25 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 20 ft.
.FRI...S wind 25 kt. Seas 15 ft.
.SAT...S wind 30 kt. Seas 26 ft.

$$

PKZ177-221330-
Adak to Kiska-
310 PM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...NW wind 30 kt. Seas 18 ft.
.TUE...NW wind 30 kt. Seas 19 ft.
.TUE NIGHT...NW wind 30 kt. Seas 17 ft.
.WED...SW wind 30 kt. Seas 14 ft.
.WED NIGHT...SW wind 35 kt. Seas 17 ft.
.THU...W wind 40 kt. Seas 19 ft.
.FRI...SE wind 30 kt. Seas 16 ft.
.SAT...SW wind 30 kt. Seas 26 ft.

$$

PKZ178-221330-
Kiska to Attu-
310 PM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...N wind 30 kt. Seas 17 ft. Freezing spray.
.TUE...NW wind 30 kt. Seas 18 ft. Freezing spray.
.TUE NIGHT...NW wind 30 kt. Seas 16 ft. Freezing spray.
.WED...SW wind 30 kt. Seas 15 ft.
.WED NIGHT...NW wind 35 kt. Seas 17 ft.
.THU...W wind 30 kt. Seas 16 ft.
.FRI...SE wind 30 kt. Seas 15 ft.
.SAT...SW wind 30 kt. Seas 26 ft.

$$

PKZ179-221330-
Pribilof Islands Near Shore Waters-
310 PM AKST Mon Dec 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...SE wind 20 kt. Seas 11 ft.
.TUE...S wind 30 kt. Seas 14 ft.
.TUE NIGHT...NW wind 30 kt. Seas 14 ft. Freezing spray. Snow
showers.
.WED...W wind 30 kt. Seas 14 ft.
.WED NIGHT...SW wind 20 kt. Seas 10 ft.
.THU...SE wind 20 kt. Seas 11 ft.
.FRI...SE wind 25 kt. Seas 12 ft.
.SAT...E wind 30 kt. Seas 19 ft.

$$

PKZ180-221330-
Kuskokwim Delta and Etolin Strait-
310 PM AKST Mon Dec 21 2020

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY NIGHT...

.TONIGHT...SE wind 35 kt becoming S 25 kt after midnight. Seas in
ice free waters 11 ft. Snow with rain.
.TUE...SE wind 30 kt. Seas in ice free waters 9 ft.
.TUE NIGHT...SE wind 30 kt. Seas in ice free waters 12 ft. Heavy
freezing spray.
.WED...SW wind 35 kt. Seas in ice free waters 13 ft.
.WED NIGHT...SW wind 30 kt. Seas in ice free waters 11 ft.
.THU...NE wind 25 kt. Seas in ice free waters 6 ft.
.FRI...N wind 15 kt. Seas in ice free waters 6 ft.
.SAT...E wind 30 kt. Seas in ice free waters 10 ft.

$$

PKZ181-221330-
North and West of Nunivak Island-
310 PM AKST Mon Dec 21 2020

...BRISK WIND ADVISORY THROUGH TUESDAY NIGHT...

.TONIGHT...SE wind 30 kt. Snow.
.TUE...SE wind 30 kt.
.TUE NIGHT...SE wind 25 kt.
.WED...NE wind 30 kt.
.WED NIGHT...W wind 30 kt.
.THU THROUGH FRI...SE wind 15 kt.
.SAT...E wind 30 kt.

$$

PKZ185-221330-
Saint Matthew Island Waters-
310 PM AKST Mon Dec 21 2020

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

.TONIGHT...E wind 30 kt E of Saint Matthew Island...NE 45 kt W of
Saint Matthew Island. Seas 22 ft. Heavy freezing spray. Snow.
.TUE...S wind 25 kt E of Saint Matthew Island...N 40 kt W of Saint 
Matthew Island. Seas 18 ft. Heavy freezing spray. Snow.
.TUE NIGHT...E of Saint Matthew Island, SE wind 20 kt becoming N
after midnight. W of Saint Matthew Island, NW wind 35 kt
diminishing to 25 kt after midnight. Seas 18 ft. Heavy freezing 
spray.
.WED...W wind 30 kt. Seas 12 ft.
.WED NIGHT...SW wind 20 kt. Seas 7 ft.
.THU...S wind 20 kt. Seas 9 ft.
.FRI...SE wind 25 kt. Seas 10 ft.
.SAT...E wind 30 kt. Seas 26 ft.

$$

281 
FZAK52 PAFC 221221
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
321 AM AKST Tue Dec 22 2020

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.

PKZ199-230100-
321 AM AKST Tue Dec 22 2020

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...A 949 mb low 180 nm west
of St George moves to 80 nm east of St Paul and weakens to 962 mb 
Wed morning. This low moves inland near Kipnuk Wed night. There is a
new low of 976 mb 250 nm west of Attu Island. This low will move 
eastward and be 85 nm west of Amchitka Thu morning.

$$

PKZ150-230100-
South of the AK Peninsula Sitkinak to Castle Cape-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SE wind 30 kt early becoming SW, then diminishing to 20 kt 
in the afternoon. Seas 21 ft.
.TONIGHT...SW wind 25 kt. Seas 18 ft.
.WED...SW wind 25 kt. Seas 17 ft.
.WED NIGHT...SE wind 25 kt. Seas 14 ft.
.THU...E wind 30 kt. Seas 17 ft.
.FRI...N wind 15 kt. Seas 11 ft.
.SAT...SE wind 30 kt. Seas 9 ft.

$$

PKZ155-230100-
South of the AK Peninsula Castle Cape to Cape Sarichef-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 21 ft.
.TONIGHT...SW wind 30 kt except SW 25 kt from the Shumagin Islands
E. Seas 19 ft.
.WED...SW wind 30 kt. Seas 18 ft.
.WED NIGHT...NW wind 20 kt. Seas 13 ft.
.THU...NW wind 30 kt. Seas 14 ft.
.FRI...NW wind 25 kt. Seas 12 ft.
.SAT...SE wind 35 kt. Seas 16 ft.

$$

PKZ160-230100-
Bristol Bay-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY TODAY AND WEDNESDAY...

.TODAY...S wind 25 kt. Seas 6 ft.
.TONIGHT...S wind 20 kt. Seas 7 ft.
.WED...S wind 30 kt. Seas 10 ft.
.WED NIGHT...S wind 15 kt. Seas 9 ft.
.THU...N wind 30 kt. Seas 7 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT...E wind 30 kt. Seas 6 ft.

$$

PKZ165-230100-
Port Heiden to Cape Sarichef-
321 AM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...S wind 30 kt. Seas 11 ft.
.TONIGHT...S wind 35 kt except S 30 kt from Port Moller E. Seas
19 ft except 12 ft from Port Moller E.
.WED...SW wind 35 kt. Seas 18 ft.
.WED NIGHT...W wind 15 kt. Seas 11 ft.
.THU...N wind 30 kt. Seas 9 ft.
.FRI...NW wind 25 kt. Seas 11 ft.
.SAT...SE wind 35 kt. Seas 10 ft.

$$

PKZ170-230100-
Cape Sarichef to Nikolski Bering Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt. Seas 19 ft.
.TONIGHT...SW wind 40 kt. Seas 22 ft. Snow showers and rain
showers.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...W wind 20 kt. Seas 12 ft.
.THU...E wind 20 kt. Seas 8 ft.
.FRI...W wind 25 kt. Seas 11 ft.
.SAT...SE wind 40 kt. Seas 16 ft.

$$

PKZ171-230100-
Unalaska Bay-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 25 kt. Seas 4 ft.
.TONIGHT...SW wind 30 kt. Seas 5 ft. Snow showers.
.WED...W wind 25 kt. Seas 4 ft building to 7 ft in the afternoon.
Snow showers.
.WED NIGHT...W wind 20 kt. Seas 7 ft.
.THU...NE wind 10 kt. Seas 3 ft.
.FRI...W wind 15 kt. Seas 3 ft.
.SAT...SE wind 30 kt. Seas 5 ft.

$$

PKZ172-230100-
Cape Sarichef to Nikolski Pacific Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT...

.TODAY...SW wind 30 kt. Seas 22 ft.
.TONIGHT...SW wind 35 kt. Seas 20 ft.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...NW wind 20 kt. Seas 12 ft.
.THU...N wind 15 kt. Seas 13 ft.
.FRI...W wind 25 kt. Seas 14 ft.
.SAT...SE wind 35 kt. Seas 20 ft.

$$

PKZ173-230100-
Nikolski to Seguam Island Bering Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 45 kt. Seas 23 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 25 ft. Snow showers.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...SW wind 20 kt. Seas 12 ft.
.THU THROUGH FRI...SW wind 30 kt. Seas 18 ft.
.SAT...SE wind 40 kt. Seas 20 ft.

$$

PKZ174-230100-
Nikolski to Seguam Island Pacific Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 35 kt. Seas 21 ft.
.TONIGHT...W wind 35 kt. Seas 21 ft.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...SW wind 20 kt. Seas 13 ft.
.THU...SW wind 35 kt. Seas 23 ft.
.FRI...SW wind 30 kt. Seas 23 ft.
.SAT...S wind 40 kt. Seas 26 ft.

$$

PKZ175-230100-
Seguam Island to Adak Bering Side-
321 AM AKST Tue Dec 22 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 45 kt. Seas 25 ft.
.TONIGHT...W wind 40 kt becoming NW 30 kt after midnight. Seas
25 ft. Freezing spray.
.WED...W wind 30 kt. Seas 16 ft. Freezing spray.
.WED NIGHT...SW wind 20 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 22 ft.
.FRI...SE wind 30 kt. Seas 16 ft.
.SAT...SE wind 35 kt. Seas 19 ft.

$$

PKZ176-230100-
Seguam Island to Adak Pacific Side-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...W wind 30 kt. Seas 18 ft.
.TONIGHT...NW wind 30 kt. Seas 16 ft.
.WED...W wind 25 kt. Seas 13 ft.
.WED NIGHT...SW wind 25 kt. Seas 11 ft.
.THU...W wind 35 kt. Seas 20 ft.
.FRI...S wind 30 kt. Seas 20 ft.
.SAT...S wind 40 kt. Seas 35 ft.

$$

PKZ177-230100-
Adak to Kiska-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 19 ft.
.TONIGHT...NW wind 25 kt. Seas 19 ft.
.WED...W wind 25 kt. Seas 14 ft.
.WED NIGHT...SW wind 35 kt. Seas 17 ft.
.THU...W wind 40 kt. Seas 19 ft.
.FRI...SE wind 30 kt. Seas 17 ft.
.SAT...SW wind 40 kt. Seas 41 ft.

$$

PKZ178-230100-
Kiska to Attu-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...NW wind 30 kt. Seas 17 ft. Freezing spray.
.TONIGHT...W wind 30 kt. Seas 16 ft. Freezing spray.
.WED...SW wind 30 kt. Seas 14 ft. Freezing spray.
.WED NIGHT...NW wind 35 kt. Seas 15 ft.
.THU...W wind 30 kt. Seas 17 ft.
.FRI...SE wind 25 kt. Seas 15 ft.
.SAT...W wind 40 kt. Seas 30 ft.

$$

PKZ179-230100-
Pribilof Islands Near Shore Waters-
321 AM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...S wind 30 kt. Seas 13 ft.
.TONIGHT...SW wind 20 kt becoming NW 30 kt after midnight. Seas
13 ft. Freezing spray. Snow showers and rain showers.
.WED...NW wind 30 kt. Seas 14 ft. Freezing spray.
.WED NIGHT...SW wind 15 kt. Seas 9 ft.
.THU...SE wind 20 kt. Seas 7 ft.
.FRI...SE wind 25 kt. Seas 8 ft.
.SAT...E wind 35 kt. Seas 21 ft.

$$

PKZ180-230100-
Kuskokwim Delta and Etolin Strait-
321 AM AKST Tue Dec 22 2020

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

.TODAY...S wind 25 kt. Seas in ice free waters 8 ft.
.TONIGHT...SE wind 30 kt. Seas in ice free waters 12 ft. Heavy
freezing spray.
.WED...S wind 30 kt. Seas in ice free waters 13 ft.
.WED NIGHT...W wind 25 kt. Seas in ice free waters 11 ft.
.THU...N wind 25 kt. Seas in ice free waters 6 ft.
.FRI...NW wind 20 kt. Seas in ice free waters 7 ft.
.SAT...E wind 35 kt. Seas in ice free waters 13 ft.

$$

PKZ181-230100-
North and West of Nunivak Island-
321 AM AKST Tue Dec 22 2020

.TODAY...SE wind 20 kt.
.TONIGHT...SE wind 20 kt.
.WED...E wind 20 kt becoming NW in the afternoon.
.WED NIGHT...W wind 25 kt.
.THU...SE wind 15 kt.
.FRI...N wind 15 kt.
.SAT...E wind 35 kt.

$$

PKZ185-230100-
Saint Matthew Island Waters-
321 AM AKST Tue Dec 22 2020

...GALE WARNING TODAY...

.TODAY...E wind 20 kt E of Saint Matthew Island...N 35 kt W of
Saint Matthew Island. Seas 18 ft. Freezing spray. Snow.
.TONIGHT...E of Saint Matthew Island, S wind 20 kt becoming NW after 
midnight. W of Saint Matthew Island, NW wind 30 kt. Seas 16 ft. 
Freezing spray.
.WED...NW wind 25 kt. Seas 11 ft. Freezing spray.
.WED NIGHT...SW wind 20 kt. Seas 8 ft.
.THU...S wind 20 kt. Seas 8 ft.
.FRI...SE wind 30 kt. Seas 8 ft.
.SAT...E wind 40 kt. Seas 26 ft.

$$

987 
FZAK52 PAFC 230047
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
347 PM AKST Tue Dec 22 2020

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.

PKZ199-231400-
347 PM AKST Tue Dec 22 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...A 955 mb low 220 nm
north of Nikolski Tue afternoon moves over Kipnuk Wed afternoon at 
975 mb and moves inland Wed night. A 980 mb low with multiple centers
moves to 210 nm west of Shemya Tue afternoon then moves to 110 nm 
north of Atka Thu afternoon. A North Pacific low moves to 220 nm 
southeast of Sand Point at 982 mb by Thu afternoon.

$$

PKZ150-231400-
South of the AK Peninsula Sitkinak to Castle Cape-
347 PM AKST Tue Dec 22 2020

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

.TONIGHT...SW wind 25 kt. Seas 18 ft.
.WED...SW wind 25 kt. Seas 18 ft.
.WED NIGHT...E wind 20 kt. Seas 14 ft. Rain.
.THU...E wind 30 kt. Seas 19 ft.
.THU NIGHT...S wind 25 kt. Seas 18 ft.
.FRI...W wind 15 kt. Seas 11 ft.
.SAT THROUGH SUN...S wind 30 kt. Seas 11 ft.

$$

PKZ155-231400-
South of the AK Peninsula Castle Cape to Cape Sarichef-
347 PM AKST Tue Dec 22 2020

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind increasing to 35 kt except SW 25 kt 
from the Shumagin Islands E. Seas 19 ft.
.WED...SW wind 35 kt diminishing to 25 kt in the afternoon. 
From the Shumagin Islands E, SW wind 25 kt. Seas 18 ft.
.WED NIGHT...Variable wind 10 kt becoming N 20 kt after midnight.
Seas 13 ft.
.THU...N wind 30 kt. Seas 12 ft.
.THU NIGHT...NW wind 25 kt. Seas 12 ft.
.FRI...NW wind 20 kt. Seas 12 ft.
.SAT...SE wind 35 kt. Seas 16 ft.
.SUN...S wind 25 kt. Seas 17 ft.

$$

PKZ160-231400-
Bristol Bay-
347 PM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...S wind 20 kt. Seas 6 ft.
.WED...S wind 30 kt. Seas 10 ft.
.WED NIGHT...SW wind 20 kt in the evening becoming variable 
less than 10 kt. Seas 10 ft subsiding to 6 ft after midnight.
.THU...N wind 30 kt. Seas 6 ft.
.THU NIGHT...NE wind 25 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.
.SAT THROUGH SUN...SE wind 30 kt. Seas 6 ft.

$$

PKZ165-231400-
Port Heiden to Cape Sarichef-
347 PM AKST Tue Dec 22 2020

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...S wind increasing to 40 kt except S 30 kt from Port 
Moller E. Seas 19 ft except 12 ft from Port Moller E. Snow.
.WED...SW wind 35 kt. Seas 18 ft.
.WED NIGHT...W wind 20 kt in the evening becoming variable 10 kt.
Seas 10 ft.
.THU...N wind 30 kt. Seas 8 ft.
.THU NIGHT...N wind 25 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 11 ft.
.SAT...SE wind 35 kt. Seas 10 ft.
.SUN...SE wind 30 kt. Seas 10 ft.

$$

PKZ170-231400-
Cape Sarichef to Nikolski Bering Side-
347 PM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 40 kt. Seas 22 ft. Snow and rain.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...W wind 20 kt. Seas 12 ft.
.THU...SE wind 20 kt. Seas 8 ft.
.THU NIGHT...NE wind 15 kt. Seas 9 ft.
.FRI...NW wind 25 kt. Seas 13 ft.
.SAT...SE wind 40 kt. Seas 16 ft.
.SUN...S wind 30 kt. Seas 15 ft.

$$

PKZ171-231400-
Unalaska Bay-
347 PM AKST Tue Dec 22 2020

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TONIGHT...SW wind 15 kt in the evening increasing to 30 kt. 
Seas 3 ft building to 5 ft after midnight. Snow.
.WED...W wind 25 kt. Seas 5 ft. Snow showers.
.WED NIGHT...NW wind 20 kt becoming W 10 kt after midnight. 
Seas 5 ft subsiding to 2 ft after midnight.
.THU...SE wind 10 kt. Seas 2 ft.
.THU NIGHT...NE wind 10 kt. Seas 3 ft.
.FRI...W wind 20 kt. Seas 5 ft.
.SAT...SE wind 30 kt. Seas 5 ft.
.SUN...S wind 20 kt. Seas 3 ft.

$$

PKZ172-231400-
Cape Sarichef to Nikolski Pacific Side-
347 PM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind increasing to 40 kt. Seas 20 ft.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...NW wind 20 kt. Seas 12 ft.
.THU...S wind 20 kt. Seas 9 ft.
.THU NIGHT...NW wind 15 kt. Seas 13 ft.
.FRI...W wind 25 kt. Seas 16 ft.
.SAT...SE wind 35 kt. Seas 20 ft.
.SUN...S wind 30 kt. Seas 23 ft.

$$

PKZ173-231400-
Nikolski to Seguam Island Bering Side-
347 PM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 45 kt. Seas 25 ft. Snow and rain.
.WED...W wind 30 kt. Seas 19 ft.
.WED NIGHT...SW wind 20 kt. Seas 12 ft.
.THU...S wind 20 kt. Seas 10 ft.
.THU NIGHT...W wind 30 kt. Seas 20 ft.
.FRI...SW wind 30 kt. Seas 18 ft.
.SAT...SE wind 40 kt. Seas 20 ft.
.SUN...S wind 35 kt. Seas 17 ft.

$$

PKZ174-231400-
Nikolski to Seguam Island Pacific Side-
347 PM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Seas 21 ft. Snow.
.WED...W wind 30 kt. Seas 18 ft.
.WED NIGHT...W wind 20 kt. Seas 13 ft. Snow.
.THU...SW wind 20 kt. Seas 14 ft.
.THU NIGHT...W wind 35 kt. Seas 26 ft.
.FRI...SW wind 30 kt. Seas 24 ft.
.SAT...S wind 40 kt. Seas 26 ft.
.SUN...S wind 35 kt. Seas 29 ft.

$$

PKZ175-231400-
Seguam Island to Adak Bering Side-
347 PM AKST Tue Dec 22 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 45 kt becoming NW 30 kt after midnight. 
Seas 24 ft. Snow.
.WED...W wind 25 kt. Seas 16 ft.
.WED NIGHT...S wind 25 kt. Seas 11 ft. Snow.
.THU...W wind 40 kt. Seas 15 ft.
.THU NIGHT...W wind 40 kt. Seas 24 ft.
.FRI...S wind 30 kt. Seas 18 ft.
.SAT...SE wind 35 kt. Seas 19 ft.
.SUN...SW wind 35 kt. Seas 22 ft.

$$

PKZ176-231400-
Seguam Island to Adak Pacific Side-
347 PM AKST Tue Dec 22 2020

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

.TONIGHT...W wind 30 kt. Seas 16 ft.
.WED...W wind 25 kt. Seas 13 ft.
.WED NIGHT...SW wind 25 kt. Seas 12 ft. Snow.
.THU...W wind 35 kt. Seas 18 ft.
.THU NIGHT...W wind 40 kt. Seas 22 ft.
.FRI...S wind 30 kt. Seas 20 ft.
.SAT THROUGH SUN...SW wind 40 kt. Seas 36 ft.

$$

PKZ177-231400-
Adak to Kiska-
347 PM AKST Tue Dec 22 2020

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...NW wind 30 kt. Seas 18 ft.
.WED...W wind 25 kt. Seas 13 ft. Snow.
.WED NIGHT...S wind 35 kt. Seas 17 ft. Snow.
.THU AND THU NIGHT...W wind 40 kt. Seas 20 ft.
.FRI...SE wind 30 kt. Seas 17 ft.
.SAT THROUGH SUN...SW wind 40 kt. Seas 41 ft.

$$

PKZ178-231400-
Kiska to Attu-
347 PM AKST Tue Dec 22 2020

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

.TONIGHT...W wind 30 kt. Seas 16 ft. Freezing spray. Snow.
.WED...SW wind 30 kt. Seas 14 ft. Freezing spray. Snow.
.WED NIGHT...W wind 30 kt. Seas 17 ft. Freezing spray. Snow.
.THU...NW wind 30 kt. Seas 17 ft.
.THU NIGHT...S wind 25 kt. Seas 13 ft.
.FRI...SE wind 30 kt. Seas 17 ft.
.SAT THROUGH SUN...W wind 40 kt. Seas 30 ft.

$$

PKZ179-231400-
Pribilof Islands Near Shore Waters-
347 PM AKST Tue Dec 22 2020

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

.TONIGHT...SE wind 20 kt becoming NW 30 kt after midnight. 
Seas 13 ft. Freezing spray after midnight. Snow and rain...
then snow after midnight.
.WED...NW wind 30 kt. Seas 13 ft. Freezing spray.
.WED NIGHT...W wind 20 kt. Seas 10 ft.
.THU...SE wind 25 kt. Seas 8 ft.
.THU NIGHT...E wind 20 kt. Seas 8 ft.
.FRI...N wind 25 kt. Seas 9 ft.
.SAT...E wind 35 kt. Seas 21 ft.
.SUN...SE wind 30 kt. Seas 17 ft.

$$

PKZ180-231400-
Kuskokwim Delta and Etolin Strait-
347 PM AKST Tue Dec 22 2020

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

.TONIGHT...SE wind 30 kt. Seas in ice free waters 10 ft.
.WED...S wind 30 kt. Seas in ice free waters 13 ft. Snow.
.WED NIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Seas in ice free waters 11 ft subsiding to 7 ft after midnight.
.THU AND THU NIGHT...N wind 25 kt. Seas in ice free waters 6 ft.
.FRI...NW wind 20 kt. Seas in ice free waters 6 ft.
.SAT...E wind 35 kt. Seas in ice free waters 13 ft.
.SUN...SE wind 30 kt. Seas in ice free waters 13 ft.

$$

PKZ181-231400-
North and West of Nunivak Island-
347 PM AKST Tue Dec 22 2020

...BRISK WIND ADVISORY WEDNESDAY NIGHT...

.TONIGHT...SE wind 20 kt.
.WED...E wind 20 kt becoming NW in the afternoon.
Snow.
.WED NIGHT...W wind 25 kt diminishing to 15 kt after midnight.
Freezing spray.
.THU...S wind 15 kt.
.THU NIGHT...NE wind 15 kt.
.FRI...N wind 20 kt.
.SAT...E wind 35 kt.
.SUN...E wind 30 kt.

$$

PKZ185-231400-
Saint Matthew Island Waters-
347 PM AKST Tue Dec 22 2020

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

.TONIGHT...NW wind 25 kt E of Saint Matthew Island...NW 30 kt 
W of Saint Matthew Island. Seas 16 ft. Freezing spray. Snow.
.WED...NW wind 25 kt. Seas 11 ft. Freezing spray.
.WED NIGHT...SW wind 20 kt. Seas 8 ft. Freezing spray.
.THU...S wind 20 kt. Seas 6 ft.
.THU NIGHT...SE wind 15 kt. Seas 8 ft.
.FRI...NE wind 30 kt. Seas 8 ft.
.SAT THROUGH SUN...NE wind 40 kt. Seas 25 ft.

$$

059 
FZAK52 PAFC 231256
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
356 AM AKST Wed Dec 23 2020

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.

PKZ199-240145-
356 AM AKST Wed Dec 23 2020

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 965 mb low 70 nm southeast of Saint Paul moves onshore over Kipnuk
at 979 mb by Wed evening. A 974 mb Kamchatka low 360 nm west of Attu
develops into a broad, complex 978 mb centered 165 nm east of Attu 
by Thu morning then moves to 50 nm west of Nikolski at 990 mb by Fri 
morning. A 981 mb low moves north across the AKPEN and enters Bristol
Bay for Fri morning.

$$

PKZ150-240145-
South of the AK Peninsula Sitkinak to Castle Cape-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...SW wind 10 kt early increasing to 20 kt. Seas 16 ft.
.TONIGHT...S wind 20 kt. Seas 14 ft. Rain and snow.
.THU...E wind 30 kt. W of Chirikof Island, NE wind 30 kt becoming NW
in the afternoon. Seas 14 ft. Widespread rain and snow showers.
.THU NIGHT...SW wind 30 kt. Seas 15 ft.
.FRI...SW wind 25 kt. Seas 12 ft.
.SAT...SW wind 30 kt. Seas 13 ft.
.SUN...SE wind 30 kt. Seas 19 ft.

$$

PKZ155-240145-
South of the AK Peninsula Castle Cape to Cape Sarichef-
356 AM AKST Wed Dec 23 2020

...GALE WARNING THURSDAY...

.TODAY...SW wind 30 kt diminishing to 20 kt in the afternoon. Seas
16 ft.
.TONIGHT...SW wind 20 kt in the evening becoming N 25 kt. Seas 14 
ft.
.THU...N wind 30 kt except N 35 kt from the Shumagin Islands E.
Seas 11 ft.
.THU NIGHT...NW wind 25 kt. Seas 10 ft.
.FRI...W wind 35 kt. Seas 13 ft.
.SAT...S wind 35 kt. Seas 20 ft.
.SUN...SE wind 30 kt. Seas 19 ft.

$$

PKZ160-240145-
Bristol Bay-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...S wind 20 kt early increasing to 30 kt. Seas 8 ft.
.TONIGHT...S wind 25 kt becoming NW 15 kt after midnight. Seas 8 ft.
.THU...N wind 25 kt. Seas 6 ft.
.THU NIGHT...N wind 25 kt. Seas 6 ft.
.FRI...SE wind 20 kt. Seas 7 ft.
.SAT THROUGH SUN...E wind 30 kt. Seas 8 ft.

$$

PKZ165-240145-
Port Heiden to Cape Sarichef-
356 AM AKST Wed Dec 23 2020

...GALE WARNING TODAY...

.TODAY...S wind 40 kt becoming W 30 kt. Seas 16 ft. Snow and rain 
showers.
.TONIGHT...NW wind 20 kt. Seas 13 ft.
.THU...NE wind 15 kt except N 25 kt from Port Moller E. Seas 9 ft.
.THU NIGHT...N wind 25 kt. Seas 7 ft.
.FRI...NW wind 40 kt. Seas 13 ft.
.SAT...SE wind 30 kt. Seas 11 ft.
.SUN...SE wind 25 kt. Seas 10 ft.

$$

PKZ170-240145-
Cape Sarichef to Nikolski Bering Side-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 30 kt. Seas 19 ft. Snow showers.
.TONIGHT...W wind 25 kt. Seas 14 ft.
.THU...SE wind 30 kt. Seas 8 ft.
.THU NIGHT...NE wind 25 kt. Seas 10 ft.
.FRI...W wind 35 kt. Seas 14 ft.
.SAT...SE wind 40 kt. Seas 17 ft.
.SUN...S wind 25 kt. Seas 17 ft.

$$

PKZ171-240145-
Unalaska Bay-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 25 kt. Seas 4 ft building to 10 ft in the afternoon.
Widespread snow showers.
.TONIGHT...NW wind 25 kt becoming W 10 kt after midnight. Seas 7 ft 
subsiding to 2 ft after midnight.
.THU...SE wind 20 kt. Seas 3 ft.
.THU NIGHT...E wind 25 kt. Seas 4 ft.
.FRI...W wind 30 kt. Seas 8 ft.
.SAT...SE wind 30 kt. Seas 5 ft.
.SUN...S wind 15 kt. Seas 2 ft.

$$

PKZ172-240145-
Cape Sarichef to Nikolski Pacific Side-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...W wind 30 kt. Seas 16 ft.
.TONIGHT...NW wind 25 kt. Seas 13 ft.
.THU...S wind 30 kt. Seas 9 ft.
.THU NIGHT...E wind 20 kt. Seas 14 ft.
.FRI...W wind 35 kt. Seas 17 ft.
.SAT...S wind 40 kt. Seas 25 ft.
.SUN...S wind 25 kt. Seas 25 ft.

$$

PKZ173-240145-
Nikolski to Seguam Island Bering Side-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt. Seas 19 ft.
.TONIGHT...S wind 25 kt. Seas 12 ft.
.THU...S wind 30 kt becoming SW 20 kt in the afternoon. Seas 11 ft. 
Snow.
.THU NIGHT...NW wind 30 kt. Seas 23 ft.
.FRI...S wind 35 kt. Seas 23 ft.
.SAT...S wind 40 kt. Seas 26 ft.
.SUN...S wind 30 kt. Seas 23 ft.

$$

PKZ174-240145-
Nikolski to Seguam Island Pacific Side-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt. Seas 18 ft. Snow showers.
.TONIGHT...W wind 15 kt becoming S 30 kt after midnight. Seas 12 ft.
Snow.
.THU...S wind 30 kt. Seas 14 ft. Snow.
.THU NIGHT...NW wind 35 kt. Seas 23 ft.
.FRI...SW wind 40 kt. Seas 23 ft.
.SAT...S wind 40 kt. Seas 32 ft.
.SUN...S wind 25 kt. Seas 28 ft.

$$

PKZ175-240145-
Seguam Island to Adak Bering Side-
356 AM AKST Wed Dec 23 2020

...GALE WARNING THURSDAY...

.TODAY...W wind 30 kt. Seas 17 ft.
.TONIGHT...S wind 30 kt. Seas 10 ft. Snow.
.THU...SW wind 30 kt becoming W 40 kt in the afternoon. Seas 11 ft
building to 18 ft in the afternoon. Snow.
.THU NIGHT...NW wind 50 kt. Seas 23 ft.
.FRI THROUGH SAT...S wind 35 kt. Seas 21 ft.
.SUN...SW wind 30 kt. Seas 21 ft.

$$

PKZ176-240145-
Seguam Island to Adak Pacific Side-
356 AM AKST Wed Dec 23 2020

...GALE WARNING THURSDAY...

.TODAY...W wind 25 kt. Seas 13 ft.
.TONIGHT...SW wind 30 kt. Seas 14 ft. Snow.
.THU...SW wind 30 kt becoming W 45 kt in the afternoon. Seas 19 ft. 
Snow.
.THU NIGHT...NW wind 50 kt. Seas 20 ft.
.FRI...S wind 40 kt. Seas 18 ft.
.SAT...S wind 40 kt. Seas 34 ft.
.SUN...SW wind 30 kt. Seas 28 ft.

$$

PKZ177-240145-
Adak to Kiska-
356 AM AKST Wed Dec 23 2020

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...W wind 25 kt. Seas 13 ft.
.TONIGHT...SW wind 35 kt. Seas 11 ft Bering side... 18 ft Pacific 
side. Snow.
.THU...W wind 45 kt. Seas 16 ft Bering side...20 ft Pacific side. 
Snow showers.
.THU NIGHT...W wind 45 kt. Seas 18 ft.
.FRI...S wind 40 kt. Seas 17 ft.
.SAT...S wind 40 kt. Seas 26 ft.
.SUN...S wind 30 kt. Seas 24 ft.

$$

PKZ178-240145-
Kiska to Attu-
356 AM AKST Wed Dec 23 2020

...GALE WARNING THROUGH THURSDAY...

.TODAY...SW wind 35 kt. Seas 14 ft. Freezing spray. Snow showers.
.TONIGHT...W wind 35 kt. Seas 18 ft. Freezing spray. Snow.
.THU...NW wind 40 kt. Seas 17 ft. Freezing spray.
.THU NIGHT...S wind 35 kt. Seas 12 ft.
.FRI...SW wind 40 kt. Seas 17 ft.
.SAT THROUGH SUN...SW wind 35 kt. Seas 28 ft.

$$

PKZ179-240145-
Pribilof Islands Near Shore Waters-
356 AM AKST Wed Dec 23 2020

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 15 ft. Freezing spray. Snow showers.
.TONIGHT...S wind 25 kt. Seas 11 ft.
.THU...S wind 25 kt. Seas 9 ft. Freezing spray.
.THU NIGHT...E wind 20 kt. Seas 10 ft.
.FRI...NW wind 25 kt. Seas 10 ft.
.SAT...SE wind 40 kt. Seas 22 ft.
.SUN...SE wind 25 kt. Seas 22 ft.

$$

PKZ180-240145-
Kuskokwim Delta and Etolin Strait-
356 AM AKST Wed Dec 23 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 25 kt early increasing to 35 kt. Seas 12 ft.
.TONIGHT...W wind 35 kt diminishing to 25 kt after midnight. Seas
12 ft.
.THU...W wind 15 kt becoming E in the afternoon. Seas 7 ft.
.THU NIGHT...N wind 30 kt. Seas 7 ft.
.FRI...N wind 35 kt. Seas 8 ft.
.SAT...SE wind 35 kt. Seas 14 ft.
.SUN...SE wind 30 kt. Seas 14 ft.

$$

PKZ181-240145-
North and West of Nunivak Island-
356 AM AKST Wed Dec 23 2020

...BRISK WIND ADVISORY THROUGH TONIGHT...

.TODAY...SE wind 20 kt becoming NE 30 kt in the afternoon.
.TONIGHT...NW wind 25 kt. Freezing spray.
.THU...S wind 20 kt.
.THU NIGHT...E wind 20 kt.
.FRI...N wind 25 kt.
.SAT THROUGH SUN...E wind 35 kt.

$$

PKZ185-240145-
Saint Matthew Island Waters-
356 AM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TODAY...NW wind 30 kt E of Saint Matthew Island...NW 20 kt W of 
Saint Matthew Island. Seas 11 ft. Freezing spray.
.TONIGHT...W wind 25 kt E of Saint Matthew Island...S 20 kt W of
Saint Matthew Island. Seas 7 ft. Freezing spray.
.THU...S wind 25 kt. Seas 7 ft. Freezing spray.
.THU NIGHT...S wind 20 kt. Seas 10 ft.
.FRI...E wind 30 kt. Seas 9 ft.
.SAT...E wind 45 kt. Seas 26 ft.
.SUN...E wind 40 kt. Seas 26 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
516 PM AKST Sun Dec 20 2020

.ANALYSIS AND UPPER LEVELS...

A weak upper level wave is currently pushing into Southcentral
aiding in the development of a surface low just to the south and
east of the Kenai Peninsula. This weak system is generating
another round of snow showers across the area. These snow showers
are expected to produce only some light accumulations with not
nearly as strong of dynamics or moisture compared with yesterday's
storm system.

Further west, our next major storm system is already taking shape
with a storm force surface low moving through the central
Aleutians. This is all in advance of a deep upper level trough
currently moving just south of the western Aleutians, with a
powerful jet rounding its base. Water vapor imagery indicates a
steadily improving connection to tropical moisture with early
indications of a developing atmospheric river that will have major
implications on the forecast over the next couple of days.

This surface low will continue tracking north and east tonight
while deepening below 950 mb. Meanwhile its front will march to
the east, pushing into the eastern Bering/Aleutians/AKPEN by later
tonight.

&&

.MODEL DISCUSSION...

Models are better overall today as compared to yesterday, but some
very major issues remain. To start with, the complex low in the
Bering Sea remains a bit of a mess with the models varying by
hundreds of miles and 20+ mb with where the two low centers will
be by Tuesday afternoon. The good news is that they all pretty
much have whittled it down to there being only two main centers
and not possibly three or four as they showed yesterday. This
actually is an improvement and we hope they can converge on a
common solution soon.

Models are starting to converge on a more common solution for the
Gulf of Alaska and Southcentral Alaska for Monday through
Wednesday. That is unless you are the 12Z GFS model which is
spinning up a strong low (which the GEM and NAM both show as much
much weaker) and running it over the top of Homer Tuesday evening
which would be enough to turn a major storm in Southcentral into
an even more impactful event. The 18Z GFS still has this low but
about 10 mb weaker. The GFS ensemble also shows a number of
members with s fairly strong low tracking over lower Cook Inlet or
Kachemak Bay so, while the other models are still going with a
faster and weaker low, the GFS cannot be completely dismissed.

Precipitation type differences in the models is making the
forecast for the Kenai Peninsula particularly difficult. A
surprising aspect of this strong storm system is that the models
are showing surprisingly cold temperatures through the boundary
layer through 850 mb. This is a big reason for the Blizzard and
Heavy Snow conditions expected for the eastern Kenai Peninsula.
This is one of the biggest questions as just a little bit more
warming will significantly reduce these amounts and that is
something that will need to be watched closely over the next few
days.

&&

.AVIATION...
PANC...Some snow showers will persist through the evening bringing
some occasional IFR visibilities, but conditions will remain
mostly MVFR. The visibility should become all VFR after midnight
with the potential for some MVFR ceilings to persist. More light
snow with MVFR conditions is likely again by Monday afternoon.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2: Sunday
night through Tuesday)...

Very active and highly impactful weather is on the way for
Southcentral AK. Before its arrival, some light snowfall will
continue into the evening tonight. A brief break in the weather
will occur tomorrow during the day - the calm before the storm.

Late tonight, a broad area of low pressure that is currently
straddling the Aleutians will develop a low in the North Pacific.
This low and attached front will move quickly northeast into the
Western Gulf tomorrow, moving past Kodiak. It will arrive along
the Southcentral coast late in the day tomorrow. This system will
intensify as it moves into the gulf, which will create highly
impactful weather for the Southcentral coast when it arrives.
Weather associated with this system includes high winds due to a
hurricane force barrier jet setting up along the Southcentral
coast, including hurricane force winds in Prince William Sound.
Cross barrier flow and local effects means hurricane force winds
are also possible in passes, areas around Turnagain Arm, and the
upper hillside of Anchorage. So, high wind watches have been
issued for several locations, please see those statements for
details.

This system is expected to bring high amounts of moisture, or QPF.
This means heavy rain for areas along the coast that will get
above freezing, and heavy snow for higher elevations that will
stay above snow level. Temperatures will be warming with this
system and this still needs to be honed. However, there is enough
of a threat to issue a winter storm watch for the Eastern Kenai
Peninsula. Please see that statement for details.

Regarding the Kenai Peninsula, there was a significant change to
the forecast for Seward today, as we are now thinking Seward will
transition to rain overnight Monday into Tuesday. With high
precipitation amounts Tuesday, minor flooding is a concern due to
frozen culverts not being able to drain water. Tuesday into
Wednesday there is also a possibility of winter weather returning
to Homer with authority, due to colder air with snow/wind moving
into the southern Kenai. This is still under development so stay
tuned here...it will all depend on the low track and strength,
which is not locked in yet.

It should be noted there is still uncertainty to exactly how this
will play out, as there is considerable model disagreement on the
development of a secondary low along this front, that could
enhance weather impacts. The GFS is swinging for the fences with
the most intense system possible, while all other guidance has
impactful, but less intense weather. The GFS still cannot be
discounted though. Temperatures and precipitation type will also
be a factor in snowlevels, of which there is uncertainty as well.
So, expect further adjustments to the forecast. There is still
uncertainty with the forecast, but we have enough confidence to
say this will be a big event.

Lastly, while almost all focus is along the coast, inland ares
will see weather as well. The upper Susitna Valley can expect to
see up to 6 inches of snow along the Parks highway, but right now
it doesn't look like enough to issue an advisory. All in all, very
impactful weather coming up right as folks will starts to travel
for Christmas. So please stay tuned for forecast updates.

&&

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

The main challenge in this forecast package was to discern the
precipitation type (P-Type) for Bristol Bay in response to the
approaching frontal system from the Bering between Sunday night
and early Monday morning. Though warmer temperatures from the
front should remain near but mainly south of the Aleutians and
AKPEN through at least Monday night, the potential for snow
transitioning to rain for Bristol Bay is credible and it may be
brief too. At 850 mb, very cold temperatures near -16 degrees
Celsius dips right over Kuskokwim Bay from the northern Bering by
this afternoon. This cold air advection advances eastward and
across Southwest Alaska through tonight until the warm boundary of
the frontal system steps across the eastern Bering tonight, which
will cause the departure of the cold temperatures from the teens
to near single digits as early as Monday morning. The southerly
flow mainly over Bristol Bay will also cause warm air to move
farther inland, and downsloping will take place as well over the
leeward side of Chigmit Mountains. In the meantime, steady light
snow continues over much of the coastal area and farther inland,
south of the Kusko Valley and Nushagak Hills. Strong winds
associated with the frontal system will also move across AKPEN and
Bristol Bay between Monday and Tuesday. There's a good chance for
increased blowing snow to occur over portions of Bristol Bay and
Kuskokwim Bay by overnight Sunday night, and should conditions
worsen it could lead to diminishing visibility into the early
hours of Monday morning. Will keep an eye on this situation and
provide updates in the next forecast package.

&&

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

The onset of the North Pacific storm over the central
Aleutians/Bering around noon today will elevate winds, seas, and
precipitation for the rest of eastern Aleutians and Bering in the
coming days. This storm and its strong frontal boundary would most
likely boost winds over Cold Bay just a bit higher by Sunday
night and Monday than the forecasted winds. Strong southerly winds
from the front will trend upward especially along the Gaps and
Passes around Cold Bay. For this reason, will monitor the
observations closely and issue updates should winds worsen there.

&&

.Marine (Days 3 through 5: Wednesday through Friday)...

Gulf of Alaska
There is good agreement on steady improvement of conditions across
the Gulf on Wednesday as the major Monday/Tuesday storm begins to
track inland and weaken. Southerly winds will be found across
much of the Gulf, with all areas falling below small craft levels
by late morning. Wednesday night into Thursday there is
significant disagreement on the strength and track of a North
Pacific low lifting into the Gulf. If the stronger and further
west solution indicated by the GFS works out, southerly gales may
return to the western Gulf by late Thursday. By Friday there is
better agreement on all areas once again seeing winds fall to
small craft or weaker.

Bering Sea:
There is good agreement on a weakening broad low across the
Bering on Wednesday which should result in fairly tame winds. On
Thursday there is disagreement on the placement of a compact
surface low near or just south of the central Aleutians. A small
areas of gales or even briefly storm force winds appear possible,
but the exact placement is difficult to pin down at this point. On
Friday uncertainty increases even further with the potential for
a Gale force front pushing into the western Bering/Aleutians, but
the GFS is significantly weaker with this front versus other
models.

&&

.Long Term (Days 4 through 7/: Thursday through Sunday)...

Active weather looks to persist right into the long term. On
Thursday a broad upper level low looks to extend across much of
the Bering. A shortwave rounding the base of this trough looks to
support the development of a compact storm force low somewhere
near the central Aleutians. Further east, a negatively tilted
trough lifting out of the North Pacific will aid in the
development of another surface low that will lift into the western
Gulf of Alaska and spread another round of precipitation across
the AKPEN, Kodiak and eventually much of the Northern Gulf Coast.

For Friday the details become much more murky, but the general
idea is slightly less active weather taking over for Southcentral.
Meanwhile another gale or storm force front looks to push into the
western Bering, bringing wind/rain to the western Aleutians.

For Saturday and Sunday a deep upper trough looks to dig into the
western Bering/Aleutians with the development of a strong system
likely out ahead of it. The placement of said system remains a
huge question mark with solutions split towards this being a
wind/wave generator for the Bering, or yet another strong low
moving into the western Gulf.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...WSW 125 161 195. NPW 121 125.
MARINE...STORMS 130 155 170 172 351 352 411-413. GALES 119 120
125 131 132 138 139 150 165 171 173-177 179-181 185 414.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...BG/EZ
SOUTHCENTRAL ALASKA...BJB
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KM
MARINE/LONG TERM...BG