Brisk Wind Advisory 67, NWS Anchorage, AK

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.

$$

738 
FZAK52 PAFC 240053
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
353 PM 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.

PKZ199-241345-
353 PM AKST Wed Dec 23 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...A 975 mb low 60 nm
southwest of Kipnuk moves onshore at 979 mb by Wed evening. A 980 mb
low with multiple centers 70 nm north of Attu moves to 170 nm north 
of Atka at 979 mb Thu afternoon then crosses the Aleutians at 990 mb 
near Unalaska Island Fri morning. A 980 mb North Pacific low 260 nm 
southeast of Chignik Thu afternoon moves north across the Alaska
Peninsula near Pilot Point at 985 mb by Fri afternoon.

$$

PKZ150-241345-
South of the AK Peninsula Sitkinak to Castle Cape-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...S wind 20 kt. Seas 14 ft.
.THU...NE wind 30 kt. Seas 13 ft. Rain with snow.
.THU NIGHT...N wind 30 kt becoming W after midnight. Seas 14 ft.
Rain.
.FRI...W wind 25 kt. Seas 11 ft.
.FRI NIGHT...W wind 20 kt. Seas 9 ft.
.SAT...SW wind 30 kt. Seas 13 ft.
.SUN...SE wind 30 kt. Seas 19 ft.
.MON...SE wind 20 kt. Seas 19 ft.

$$

PKZ155-241345-
South of the AK Peninsula Castle Cape to Cape Sarichef-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...W wind 25 kt except SW 15 kt from the Shumagin Islands
E. Seas 14 ft.
.THU...N wind 20 kt except N 30 kt from the Shumagin Islands E.
Seas 10 ft.
.THU NIGHT...N wind 20 kt. From the Shumagin Islands E, NW wind
30 kt diminishing to 20 kt after midnight. Seas 9 ft.
.FRI...NW wind 20 kt. Seas 11 ft.
.FRI NIGHT...NW wind 25 kt. Seas 13 ft.
.SAT...S wind 35 kt. Seas 20 ft.
.SUN...SE wind 30 kt. Seas 19 ft.
.MON...SE wind 20 kt. Seas 21 ft.

$$

PKZ160-241345-
Bristol Bay-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY TONIGHT AND THURSDAY NIGHT...

.TONIGHT...S wind 25 kt becoming SW 15 kt after midnight. Seas 8
ft. Freezing spray.
.THU...N wind 20 kt. Seas 7 ft.
.THU NIGHT...N wind 25 kt. Seas 5 ft. Freezing spray.
.FRI AND FRI NIGHT...W wind 20 kt. Seas 5 ft.
.SAT...S wind 30 kt. Seas 7 ft.
.SUN...E wind 30 kt. Seas 8 ft.
.MON...E wind 20 kt. Seas 8 ft.

$$

PKZ165-241345-
Port Heiden to Cape Sarichef-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...W wind 25 kt. Seas 13 ft.
.THU...NW wind 15 kt becoming NE in the afternoon. Seas 9 ft.
.THU NIGHT...NE wind 20 kt. Seas 6 ft. Freezing spray.
.FRI...NW wind 25 kt. Seas 12 ft.
.FRI NIGHT...NW wind 30 kt. Seas 12 ft.
.SAT...SE wind 30 kt. Seas 11 ft.
.SUN...SE wind 25 kt. Seas 10 ft.
.MON...E wind 20 kt. Seas 17 ft.

$$

PKZ170-241345-
Cape Sarichef to Nikolski Bering Side-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 13 ft.
.THU...SE wind 30 kt. Seas 8 ft. Snow.
.THU NIGHT...S wind 30 kt. Seas 8 ft building to 14 ft after
midnight.
.FRI...NE wind 25 kt. Seas 20 ft.
.FRI NIGHT...W wind 20 kt. Seas 18 ft.
.SAT...SE wind 45 kt. Seas 17 ft.
.SUN...S wind 25 kt. Seas 17 ft.
.MON...E wind 15 kt. Seas 19 ft.

$$

PKZ171-241345-
Unalaska Bay-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY...

.TONIGHT...NW wind 25 kt becoming SW 15 kt after midnight. Seas
5 ft.
.THU...S wind 20 kt becoming SE 30 kt in the afternoon. Seas 4 ft.
Snow.
.THU NIGHT...SW wind 15 kt. Seas 2 ft. Snow.
.FRI...NE wind 15 kt. Seas 5 ft.
.FRI NIGHT...W wind 15 kt. Seas 5 ft.
.SAT...SE wind 35 kt. Seas 5 ft.
.SUN...S wind 15 kt. Seas 2 ft.
.MON...SE wind 10 kt. Seas 2 ft.

$$

PKZ172-241345-
Cape Sarichef to Nikolski Pacific Side-
353 PM AKST Wed Dec 23 2020

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...NW wind 25 kt. Seas 12 ft.
.THU...S wind 30 kt. Seas 10 ft. Snow.
.THU NIGHT...SW wind 20 kt increasing to 35 kt after midnight.
Seas 13 ft.
.FRI...NW wind 35 kt. Seas 17 ft.
.FRI NIGHT...W wind 25 kt. Seas 15 ft.
.SAT...S wind 40 kt. Seas 25 ft.
.SUN...S wind 25 kt. Seas 25 ft.
.MON...S wind 20 kt. Seas 18 ft.

$$

PKZ173-241345-
Nikolski to Seguam Island Bering Side-
353 PM AKST Wed Dec 23 2020

...STORM WARNING THURSDAY NIGHT...

.TONIGHT...W wind 15 kt early becoming S wind 25 kt. Seas 12 ft. 
Snow.
.THU...S wind 35 kt. Seas 14 ft. Snow showers.
.THU NIGHT...W wind 50 kt. Seas 18 ft building to 24 ft after
midnight. Snow showers.
.FRI...NW wind 50 kt. Seas 23 ft.
.FRI NIGHT...SE wind 35 kt. Seas 17 ft.
.SAT...S wind 45 kt. Seas 26 ft.
.SUN...S wind 30 kt. Seas 23 ft.
.MON...W wind 15 kt. Seas 14 ft.

$$

PKZ174-241345-
Nikolski to Seguam Island Pacific Side-
353 PM AKST Wed Dec 23 2020

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...W wind 15 kt early becoming S wind 25 kt. Seas 12 ft. 
Snow.
.THU...S wind 30 kt. Seas 14 ft. Snow showers.
.THU NIGHT...W wind 45 kt. Seas 21 ft. Snow showers.
.FRI...W wind 50 kt. Seas 20 ft.
.FRI NIGHT...S wind 40 kt. Seas 14 ft.
.SAT...S wind 40 kt. Seas 32 ft.
.SUN...S wind 25 kt. Seas 28 ft.
.MON...W wind 25 kt. Seas 17 ft.

$$

PKZ175-241345-
Seguam Island to Adak Bering Side-
353 PM AKST Wed Dec 23 2020

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...S wind increasing to 30 kt. Seas 11 ft. Snow.
.THU...W wind 45 kt. Seas 13 ft building to 19 ft in the
afternoon. Snow.
.THU NIGHT...NW wind 45 kt. Seas 23 ft. Snow.
.FRI...W wind 45 kt. Seas 19 ft.
.FRI NIGHT...SE wind 50 kt. Seas 13 ft.
.SAT...S wind 50 kt. Seas 21 ft.
.SUN...SW wind 30 kt. Seas 21 ft.
.MON...SW wind 15 kt. Seas 17 ft.

$$

PKZ176-241345-
Seguam Island to Adak Pacific Side-
353 PM AKST Wed Dec 23 2020

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...SW wind 25 kt increasing to 40 kt after midnight. 
Seas 14 ft. Snow.
.THU...SW wind 35 kt. Seas 18 ft. Snow.
.THU NIGHT...W wind 45 kt. Seas 19 ft. Snow.
.FRI...W wind 40 kt. Seas 16 ft.
.FRI NIGHT...SE wind 40 kt. Seas 15 ft.
.SAT...S wind 40 kt. Seas 34 ft.
.SUN...SW wind 30 kt. Seas 28 ft.
.MON...SW wind 25 kt. Seas 18 ft.

$$

PKZ177-241345-
Adak to Kiska-
353 PM AKST Wed Dec 23 2020

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...SW wind 30 kt becoming W 40 kt after midnight. 
Seas 15 ft. Snow.
.THU...W wind 35 kt. Seas 19 ft. Snow.
.THU NIGHT...NW wind 35 kt. Seas 18 ft.
.FRI...SE wind 40 kt. Seas 11 ft.
.FRI NIGHT...E wind 55 kt. Seas 19 ft.
.SAT...S wind 50 kt. Seas 26 ft.
.SUN...S wind 30 kt. Seas 24 ft.
.MON...SW wind 25 kt. Seas 23 ft.

$$

PKZ178-241345-
Kiska to Attu-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 17 ft. Freezing spray. Snow showers.
.THU...NW wind 30 kt. Seas 17 ft. Freezing spray.
.THU NIGHT...S wind 25 kt. Seas 12 ft. Freezing spray.
.FRI...SE wind 45 kt. Seas 11 ft.
.FRI NIGHT...E wind 50 kt. Seas 25 ft.
.SAT...SE wind 55 kt. Seas 26 ft.
.SUN...SW wind 35 kt. Seas 29 ft.
.MON...SW wind 25 kt. Seas 26 ft.

$$

PKZ179-241345-
Pribilof Islands Near Shore Waters-
353 PM AKST Wed Dec 23 2020

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...W wind 25 kt. Seas 10 ft.
.THU...S wind 20 kt becoming SE 30 kt in the afternoon. 
Seas 10 ft. Freezing spray.
.THU NIGHT...E wind 35 kt. Seas 11 ft.
.FRI...NE wind 25 kt. Seas 13 ft.
.FRI NIGHT...E wind 15 kt. Seas 10 ft.
.SAT...SE wind 40 kt. Seas 22 ft.
.SUN...SE wind 25 kt. Seas 22 ft.
.MON...E wind 15 kt. Seas 13 ft.

$$

PKZ180-241345-
Kuskokwim Delta and Etolin Strait-
353 PM AKST Wed Dec 23 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 35 kt. Along the coast, S wind 35 kt diminishing 
to 25 kt after midnight. Seas 11 ft. Freezing spray and areas of 
freezing fog.
.THU...W wind 15 kt becoming E in the afternoon. Seas 7 ft.
.THU NIGHT...N wind 30 kt. Seas 5 ft. Freezing spray.
.FRI AND FRI NIGHT...NW wind 30 kt. Seas 8 ft.
.SAT...SE wind 35 kt. Seas 14 ft.
.SUN...SE wind 30 kt. Seas 14 ft.
.MON...E wind 20 kt. Seas 11 ft.

$$

PKZ181-241345-
North and West of Nunivak Island-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 30 kt...except NE along the coast in the evening.
Seas in ice free waters 6 ft. Freezing spray.
.THU...SW wind 15 kt. Seas in ice free waters 3 ft.
.THU NIGHT...E wind 15 kt. Seas in ice free waters 3 ft.
.FRI AND FRI NIGHT...N wind 25 kt. Seas in ice free waters 4 ft.
.SAT THROUGH SUN...E wind 35 kt. Seas in ice free waters 2 ft.
.MON...E wind 20 kt. Seas in ice free waters 2 ft.

$$

PKZ185-241345-
Saint Matthew Island Waters-
353 PM AKST Wed Dec 23 2020

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

.TONIGHT...E of Saint Matthew Island, NW wind 25 kt. W of Saint
Matthew Island, SW wind 20 kt becoming SE 30 kt after midnight.
Seas 7 ft. Freezing spray.
.THU...S wind 30 kt. Seas 8 ft. Freezing spray.
.THU NIGHT...SE wind 20 kt E of Saint Matthew Island...N 30 kt 
W of Saint Matthew Island. Seas 11 ft. Freezing spray.
.FRI...N wind 25 kt. Seas 11 ft.
.FRI NIGHT...NE wind 30 kt. Seas 9 ft.
.SAT...E wind 45 kt. Seas 26 ft.
.SUN...E wind 40 kt. Seas 26 ft.
.MON...E wind 20 kt. Seas 16 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
519 AM AKST Tue Dec 22 2020

.ANALYSIS AND UPPER LEVELS...

The longwave pattern features a broad trough over the Bering and a
ridge axis bisecting SE Alaska and the Yukon Territory. There are
numerous shortwaves riding up the back side of the ridge and
distinct upper level closed lows near the Pribilof Islands and
over NE Russia. The leading edge of the jet is entering the Gulf
Of Alaska while the jet core of 170 knot is south of the
Aleutians. At the surface there is a an mature front over the
Bering and another mature front making headway across the Gulf.
On satellite imagery, there is a distinct tropical connection with
the low in the Gulf. The deep fetch of moisture extents from just
east of Kodiak to an area north of Hawaii.

&&

.MODEL DISCUSSION...

Synoptically, models are in good agreement through 36 hrs. There
are some minor difference with the onset and end time of
precipitation. As usual, the thermodynamic parameters of the
models are slightly off which could have implications for p-type
(snow vs. rain). This is most noticeable over Cook Inlet and
Prince William Sound. In the past 4 days, the model agreement has
improved significantly over the Bering, the North Pacific and in
the Gulf Of Alaska.

&&

.AVIATION...
PANC...There is a frontal boundary moving across the aerodrome.
Expect several decks of cloud layers. Even though the cigs will
decrease, the current thinking is that the cloud coverage will
stay above VFR minimums. The main impact to the airfield will be
low level wind shear today.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2: Today
through Wednesday Night)...

The very active storm pattern across Southcentral continues into
Wednesday, with a much needed and well-deserved break in the
weather expected starting Wednesday night.

For the Anchorage area, the High Wind Warning remains in effect
until 6pm this evening. While winds have been slow to come up so
far this morning, there are already indications upwind across the
eastern Kenai Peninsula that the period of highest winds is
arriving with Portage Glacier recently reporting an 82 mph gust.
Nevertheless, the model guidance has backed off a little bit on
the peak winds, and as such the expected peak wind gusts have also
been refined down as well. Nevertheless, this still is expected
to be a very impactful event with frequent gusts well over
hurricane force for Turnagain Arm and higher elevations, with even
a few hurricane force gusts possible over the Lower Hillside. The
peak winds still look to be between now and noon, as the front
causing the winds barrels north across Southcentral. This
afternoon into tonight, the winds will diminish a bit, but will
still remain strong with gusts approaching 75 mph still possible
at higher elevations.

The gusty winds are also expected to increase across much of the
Matanuska Valley today. Palmer has already had a peak wind gust
earlier this morning of 50 mph. The gusts here too will peak
later on this morning, but will remain gusty into tonight.

The High Wind Warning also remains in effect for the Eastern Kenai
Peninsula, specifically through Portage Valley and Eastern
Turnagain Arm, with Portage Glacier already getting hurricane
force gusts with the peak winds still to come later this morning.
The Blizzard Warning has been an interesting story. It remains in
effect, but has been trimmed back to 9am. Most of the observing
stations along the Seward Highway were well above freezing
earlier yesterday evening, suggesting rain was occurring far
sooner. However, since then temperatures have been dropping and
Portage Glacier has changed back over to snow. Nevertheless,
warmer air is making its way towards the area behind the front
causing the strong winds, and since temperatures along nearly all
of the Seward Highway are at least at, and in many cases still are
above freezing, it stands to reason the warmer air coming in with
the front later this morning should turn all of the precipitation
over to rain up through Pass level. That said, it's likely there
will be localized changes back and forth between rain and snow
through this morning, and the blizzard conditions are still likely
occurring through Turnagain Pass, so travel remains strongly
discouraged through this morning.

A secondary area of low pressure still well south of the Gulf will
race northward towards Southcentral, reaching the coast of the
Kenai Peninsula somewhere between Seldovia and Seward this
evening. The low center will then hug the coast and move into
Prince William Sound late tonight, then move inland and dissipate
Wednesday morning. This will have a number of effects as it
happens: First, the High Wind Warning for the Cordova area remains
in effect, because that low will push the hurricane force barrier
jet inland for a few hours before the strongest winds rapidly
diminish. This is likely to occur within a few hours of midnight
tonight. Second, this low track will keep the Cook Inlet region
on the "cold" side of the low. However, by tonight there will be
very little in the way of cold air to work with, as the warming
flow expected all day today will scour it all out.

Therefore, as with a few storms already this winter season,
temperatures will be right near freezing tonight into Wednesday
morning with a good likelihood of occasionally heavy
precipitation. However, what form that precipitation takes is
still very much in doubt, as a degree or two will make all the
difference between blowing snow and a driving cold rain. The
eastward trend in the low track does favor a colder solution
and snow, and thus, the forecast reflects the still highly
uncertain expectation that most of the precipitation tonight into
Wednesday morning falls as snow across the Cook Inlet region.
1 to 3 inches of snow are possible for a few hours, but due to
the fast moving and heavy nature of the snow band producing the
accumulation, they will come down quickly. Below freezing
temperatures will also likely cause many slick areas, due to
refreeze from today's melt combined with the snow.

The snow rapidly shifts north through the day, such that by
lunchtime Wednesday, most of the snow should be up in the Susitna
Valley with Anchorage and points south drying out and maybe
clearing the skies a bit Wednesday afternoon. The low may produce
periods of heavy snow through Thompson Pass and the mountains
north of Cordova tonight through Wednesday as well, with the
upslope persisting into Wednesday night in those areas. For the
rest of Southcentral, Wednesday night and beyond is looking pretty
quiet, with seasonable to slightly above average temperatures
heading into Christmas.

&&

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

The evolving progress of the mix rain/snow precipitation type
(P-type) is still valid as southerly winds continue to bring warm
temperatures over the area, leading rain across AKPEN, Bristol
Bay and farther inland but well south of Kuskokwim Valleys, and
portions of Kuskokwim Bay before noon today. Meanwhile, steady
light snow will continue north of Chuilnuk Mountains and around
Sparrevohn this morning. The cold air advection from the stacked
low over the Bering will reach the coastline by this evening if
not sooner. The snow trends into Wed as the freezing level
advances eastward and across Southwest Alaska, and the amount of
snow will decline after tonight. Essentially, the amount of snow
accumulation in the next two days will range from 1 to 4 inches
near surface, but a bit high at higher elevation between 6 to 8
inches today. Fresh to strong southerly winds and higher gusts
inland will gradually diminish by this afternoon, but not so for
AKPEN. A shortwave embedded within the westerly flow south of the
low from the Bering will maintain elevated winds and snow showers
over much of AKPEN through Wed night.

&&

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

No new news since yesterday about the steepening stacked low over
the Bering. Limited forward motion is expected of the low until
Wed morning when it finally picks up speed while moving toward
Kuskokwim Bay through Wed afternoon. A stubborn upper level ridge
northeast of Southcentral will stick around for another day until
it starts weakening by Wed morning, which leads the circulation to
pass right through Y-K Delta by Wed night. Light freezing spray
will cover much of central Bering and a portion of Kuskokwim Bay
through Wed night. Heavy freezing spray will likely be found
farther west of Nunivak and Pribilof Islands, with only a minimal
coverage south of Kipnuk in the next couple days.

&&

.Marine (Days 3 through 5: Thursday through Saturday)...

Gulf of Alaska
Models have come into better agreement on the track of low moving
out of the North Pacific and then towards the AKPEN on Thursday,
but there continues to be disagreement on the strength. There
remains upside risk to the southerly winds currently in the
forecast, with gales looking possible across the western Bering.
On Friday/Saturday fairly quiet conditions are expected with good
forecast confidence.

Bering Sea:
On Thursday models continue to struggle with the placement of a
compact storm force low, with the GFS bringing this low through
the central Aleutians, while other models track this system mostly
south of the Aleutians. Our forecast sides with the further south
track,keeping lighter winds in across the Aleutians. On Friday a
front pushes into the western Bering/Aleutians, and a few areas of
Gales appear possible. On Saturday a deepening storm system looks
to set up across the western Aleutians, but there are significant
model differences as to how quickly this storm strengthens. There
may be significant upside risk to winds across the eastern Bering
on Saturday if the stronger solutions work out.

&&

.Long Term (Days 4 through 7/: Friday through Monday)...

On Friday models have come into better agreement on the track of a
North Pacific low, with good agreement on this next storm system
heading towards the AKPEN, bringing another wintry mix to
southwest Alaska and Kodiak. A gale force front looks to push into
the western Aleutians at the same time. On Saturday the AKPEN low
mostly dissipates. Meanwhile, a storm system begins to rapidly
intensify across the western Aleutians with the potential for some
storm force winds setting up across the central Aleutians along
with plentiful rain. On Sunday most models show this
Bering/Aleutians storm becoming fully mature and retrograding
north and west towards the Kamchatka Peninsula while unsettled
weather continues across the Bering and Southwest Alaska.

Model consistency disintegrates heading into Monday, but the
general idea of an active pattern across the Bering and relatively
quiet weather across Southcentral should hold.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Blizzard Warning 125. High Wind Warning 101 125 135.

MARINE...Hurricane Force Wind 119 125. Storm 413 351 120. Gale 411
412 414 165 170 172 173 174 175 185 352 128 129 130 131 132 139
140 141. Heavy Freezing Spray 180.

&&

SYNOPSIS AND MODEL DISCUSSION...PJS
SOUTHCENTRAL ALASKA...JW
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...CB
MARINE/LONG TERM...BG

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1105 AM AKST TUE DEC 22 2020

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

1056 AM     NON-TSTM WND GST ELMENDORF AFB           61.25N 149.80W
12/22/2020  M64 MPH          ANCHORAGE          AK   AWOS

            PAED AWOS/ELMENDORF AFB.

&&

GJERDINGEN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1120 AM AKST TUE DEC 22 2020

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

1107 AM     NON-TSTM WND GST FORT RICHARDSON         61.26N 149.65W
12/22/2020  M66 MPH          ANCHORAGE          AK   AWOS

            REPORTED AT FORT RICHARDSON AWOS.

&&

GJERDINGEN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
235 PM AKST TUE DEC 22 2020

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

0920 AM     NON-TSTM WND GST 3 WNW WHITTIER          60.79N 148.82W
12/22/2020  M124 MPH         ANCHORAGE          AK   MESONET

            RWIS STATION WRTA2. WHITTIER ACCESS ROAD AT
            TUNNEL.

&&

GJERDINGEN