Small Craft Advisory 972, NWS Anchorage, AK

120 
FZAK52 PAFC 191435 AAA
CWFALU

Coastal Waters Forecast...UPDATED
National Weather Service Anchorage AK
535 AM AKST Tue Dec 19 2017

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.

PKZ199-200415-
535 AM AKST Tue Dec 19 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 986 mb low will move to 180 nm west of Shemya this afternoon, 
then to 300 nm west of St. Paul at 979 mb Wed morning, then to 162 
nm southwest of Gambell at 973 mb Wed afternoon. A 991 mb low moves 
to 125 nm west of Shemya at 991 mb Wed afternoon then to 140 nm east 
of Shemya at 994 mb Thu morning.

$$

PKZ150-200415-
South of the AK Peninsula Sitkinak to Castle Cape-
535 AM AKST Tue Dec 19 2017

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 15 ft. 
.TONIGHT...SW wind 20 kt. Seas 14 ft. 
.WED...SW wind 15 kt. Seas 10 ft. 
.WED NIGHT...SE wind 30 kt. Seas 10 ft. 
.THU...E wind 50 kt. Seas 32 ft. 
.FRI...SE wind 40 kt. Seas 27 ft. 
.SAT...S wind 35 kt. Seas 20 ft.

$$

PKZ155-200415-
South of the AK Peninsula Castle Cape to Cape Sarichef-
535 AM AKST Tue Dec 19 2017

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 24 ft subsiding to 17 ft in the 
afternoon. 
.TONIGHT...SW wind 25 kt. Seas 15 ft. 
.WED...SE wind 25 kt except SW 15 kt from the Shumagin Islands E.
Seas 12 ft. 
.WED NIGHT...SE wind 30 kt. Seas 12 ft. 
.THU...E wind 50 kt. Seas 29 ft. 
.FRI...SE wind 30 kt. Seas 24 ft. 
.SAT...SW wind 30 kt. Seas 19 ft.

$$

PKZ160-200415-
Bristol Bay-
535 AM AKST Tue Dec 19 2017

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 10 ft. 
.TONIGHT...SW wind 30 kt. Seas 11 ft. 
.WED...S wind 25 kt. Seas 10 ft. 
.WED NIGHT...SE wind 35 kt. Seas 8 ft. 
.THU THROUGH FRI...E wind 50 kt. Seas 14 ft. 
.SAT...SE wind 35 kt. Seas 9 ft.

$$

PKZ165-200415-
Port Heiden to Cape Sarichef-
535 AM AKST Tue Dec 19 2017

...GALE WARNING TODAY AND WEDNESDAY...

.TODAY...SW wind 35 kt. Seas 19 ft. 
.TONIGHT...SW wind 30 kt. Seas 18 ft. 
.WED...S wind 35 kt. From Port Moller E, S wind 20 kt increasing
to 30 kt in the afternoon. Seas 16 ft. 
.WED NIGHT...SE wind 35 kt. Seas 13 ft. 
.THU...E wind 50 kt. Seas 14 ft. 
.FRI...SE wind 35 kt. Seas 15 ft. 
.SAT...SW wind 30 kt. Seas 18 ft.

$$

PKZ170-200415-
Cape Sarichef to Nikolski Bering Side-
535 AM AKST Tue Dec 19 2017

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...SW wind 35 kt. Seas 22 ft. 
.TONIGHT...S wind 35 kt. Seas 21 ft. 
.WED...S wind 45 kt. Seas 18 ft. 
.WED NIGHT...SE wind 35 kt. Seas 18 ft. 
.THU...E wind 30 kt. Seas 13 ft. 
.FRI THROUGH SAT...W wind 35 kt. Seas 19 ft.

$$

PKZ171-200415-
Unalaska Bay-
535 AM AKST Tue Dec 19 2017

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

.TODAY...SW wind 25 kt. Seas 4 ft. 
.TONIGHT...S wind 20 kt. Seas 2 ft. 
.WED...S wind 30 kt. Seas 3 ft building to 5 ft in the afternoon.
.WED NIGHT...SE wind 30 kt. Seas 5 ft. 
.THU...NE wind 30 kt. Seas 4 ft. 
.FRI...W wind 15 kt. Seas 3 ft. 
.SAT...W wind 20 kt. Seas 3 ft.

$$

PKZ172-200415-
Cape Sarichef to Nikolski Pacific Side-
535 AM AKST Tue Dec 19 2017

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 20 ft. 
.TONIGHT...SW wind 25 kt. Seas 16 ft. 
.WED...S wind 30 kt. Seas 15 ft. 
.WED NIGHT...SE wind 35 kt. Seas 18 ft. 
.THU...NE wind 30 kt. Seas 18 ft. 
.FRI THROUGH SAT...W wind 35 kt. Seas 17 ft.

$$

PKZ173-200415-
Nikloski to Seguam Island Bering Side-
535 AM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY...

.TODAY...SW wind 40 kt diminishing to 30 kt in the afternoon.
Seas 24 ft. Rain and snow showers. Isolated Thunderstorms.
.TONIGHT...SW wind 30 kt becoming S 40 kt after midnight. Seas
21 ft. 
.WED...S wind 50 kt. Seas 23 ft. 
.WED NIGHT...SE wind 40 kt. Seas 20 ft. 
.THU...W wind 30 kt. Seas 22 ft. 
.FRI...NW wind 40 kt. Seas 22 ft. 
.SAT...W wind 35 kt. Seas 14 ft.

$$

PKZ174-200415-
Nikolski to Seguam Island Pacific Side-
535 AM AKST Tue Dec 19 2017

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...SW wind 30 kt. Seas 21 ft. 
.TONIGHT...SW wind 25 kt becoming S 35 kt after midnight. Seas
18 ft. 
.WED...S wind 45 kt. Seas 23 ft. 
.WED NIGHT...SE wind 35 kt. Seas 23 ft. 
.THU...NW wind 35 kt. Seas 25 ft. 
.FRI...NW wind 40 kt. Seas 25 ft. 
.SAT...W wind 35 kt. Seas 16 ft.

$$

PKZ175-200415-
Seguam Island to Adak Bering Side-
535 AM AKST Tue Dec 19 2017

...STORM WARNING TONIGHT AND WEDNESDAY...

.TODAY...W wind 40 kt. Seas 25 ft. Rain and snow showers. Isolated
Thunderstorms.
.TONIGHT...SW wind 45 kt becoming S 55 kt after midnight. Seas
21 ft. 
.WED...S wind 60 kt becoming SW 50 kt in the afternoon. Seas
25 ft subsiding to 18 ft in the afternoon. Rain. 
.WED NIGHT...W wind 30 kt. Seas 13 ft. 
.THU...NW wind 35 kt. Seas 22 ft. 
.FRI...NW wind 40 kt. Seas 21 ft. 
.SAT...W wind 30 kt. Seas 13 ft.

$$

PKZ176-200415-
Seguam Island to Adak Pacific Side-
535 AM AKST Tue Dec 19 2017

...STORM WARNING TONIGHT AND WEDNESDAY...

.TODAY...W wind 30 kt. Seas 23 ft. 
.TONIGHT...SW wind 35 kt becoming S 55 kt after midnight. Seas
17 ft building to 23 ft after midnight. 
.WED...S wind 55 kt diminishing to 45 kt in the afternoon. Seas
29 ft. Rain. 
.WED NIGHT...W wind 40 kt. Seas 26 ft. 
.THU...NW wind 35 kt. Seas 19 ft. 
.FRI...NW wind 40 kt. Seas 19 ft. 
.SAT...W wind 30 kt. Seas 14 ft.

$$

PKZ177-200415-
Adak to Kiska-
535 AM AKST Tue Dec 19 2017

...STORM WARNING TONIGHT AND WEDNESDAY...

.TODAY...SW wind 45 kt. Seas 25 ft. 
.TONIGHT...S wind 50 kt increasing to 60 kt after midnight. Seas
29 ft. Rain. 
.WED...SW wind 50 kt becoming W 30 kt in the morning. Seas 26 ft 
subsiding to 18 ft in the afternoon. Rain. 
.WED NIGHT...W wind 30 kt. Seas 17 ft. 
.THU...NW wind 35 kt. Seas 22 ft. 
.FRI...NW wind 25 kt. Seas 14 ft. 
.SAT...W wind 30 kt. Seas 10 ft.

$$

PKZ178-200415-
Kiska to Attu-
535 AM AKST Tue Dec 19 2017

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 35 kt increasing to 50 kt in the afternoon. Seas
26 ft. Rain. 
.TONIGHT...W wind 50 kt becoming NW 30 kt after midnight. Seas
26 ft subsiding to 20 ft after midnight. Rain. 
.WED...W wind 25 kt becoming SW 35 kt in the afternoon. Seas
18 ft. Snow showers. 
.WED NIGHT...NW wind 40 kt. Seas 22 ft. 
.THU...W wind 40 kt. Seas 21 ft. 
.FRI THROUGH SAT...W wind 30 kt. Seas 10 ft.

$$

PKZ179-200415-
Pribilof Islands Near Shore Waters-
535 AM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY...

.TODAY...SW wind 40 kt. Seas 25 ft. Snow showers. 
.TONIGHT...SW wind 30 kt becoming S 45 kt after midnight. Seas
24 ft. 
.WED...S wind 50 kt. Seas 29 ft. 
.WED NIGHT...S wind 45 kt. Seas 27 ft. 
.THU...E wind 35 kt. Seas 19 ft. 
.FRI THROUGH SAT...W wind 30 kt. Seas 15 ft.

$$

PKZ180-200415-
Kuskokwim Delta and Etolin Strait-
535 AM AKST Tue Dec 19 2017

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...SW wind 35 kt. Seas 16 ft. 
.TONIGHT...SW wind 30 kt increasing to 40 kt after midnight. Seas
17 ft. 
.WED...S wind 45 kt. Seas 16 ft. 
.WED NIGHT...S wind 45 kt. Seas 17 ft. 
.THU THROUGH FRI...SE wind 55 kt. Seas 19 ft. 
.SAT...S wind 35 kt. Seas 13 ft.

$$

PKZ181-200415-
North and West of Nunivak Island-
535 AM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY...

.TODAY...SW wind 40 kt. Seas 19 ft. 
.TONIGHT...SW wind 35 kt becoming S 45 kt after midnight. Seas
18 ft. 
.WED...S wind 50 kt. Seas 23 ft. 
.WED NIGHT...S wind 50 kt. Seas 25 ft. 
.THU...SE wind 35 kt. Seas 17 ft. 
.FRI...SE wind 40 kt. Seas 14 ft. 
.SAT...S wind 30 kt. Seas 13 ft.

$$

PKZ185-200415-
Saint Matthew Island Waters-
535 AM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY...

.TODAY...SW wind 40 kt E of Saint Matthew Island... SW 45 kt W of
Saint Matthew Island. Seas 32 ft. Snow showers. 
.TONIGHT...S wind 45 kt. Seas 27 ft subsiding to 21 ft after
midnight. Snow. 
.WED...S wind 50 kt. Seas 22 ft building to 28 ft in the
afternoon. Snow with rain. 
.WED NIGHT...SW wind 50 kt. Seas 26 ft. 
.THU...NE wind 30 kt. Seas 16 ft. 
.FRI...NE wind 35 kt. Seas 14 ft. 
.SAT...W wind 30 kt. Seas 13 ft.

$$

566 
FZAK52 PAFC 200032
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
332 PM AKST Tue Dec 19 2017

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.

PKZ199-201315-
332 PM AKST Tue Dec 19 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 986 mb low will move to 180 nm west of Shemya this afternoon, 
then it will move to 300 nm west of St. Paul at 979 mb Wed 
morning, then it will move to 162 nm southwest of Gambell at 973 
mb Wed afternoon. A 991 mb low moves to 125 nm west of Shemya at 
991 mb Wed afternoon then it will move to 140 nm east of Shemya at
994 mb Thu morning.

$$

PKZ150-201315-
South of the AK Peninsula Sitkinak to Castle Cape-
332 PM AKST Tue Dec 19 2017

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

.TONIGHT...W wind 20 kt. Seas 13 ft.
.WED...SW wind 20 kt. Seas 10 ft.
.WED NIGHT...SE wind 30 kt. Seas 9 ft.
.THU...E wind 55 kt. Seas 23 ft.
.THU NIGHT...SE wind 55 kt. Seas 30 ft.
.FRI...SE wind 40 kt. Seas 25 ft.
.SAT...S wind 35 kt. Seas 20 ft.
.SUN...W wind 20 kt. Seas 14 ft.

$$

PKZ155-201315-
South of the AK Peninsula Castle Cape to Cape Sarichef-
332 PM AKST Tue Dec 19 2017

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

.TONIGHT...SW wind 25 kt. Seas 14 ft.
.WED...S wind 25 kt except SW 15 kt from the Shumagin Islands E.
Seas 12 ft.
.WED NIGHT...SE wind 30 kt. Seas 13 ft. Rain.
.THU AND THU NIGHT...SE wind 50 kt. Seas 25 ft.
.FRI...SE wind 30 kt. Seas 21 ft.
.SAT...SW wind 30 kt. Seas 19 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ160-201315-
Bristol Bay-
332 PM AKST Tue Dec 19 2017

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 10 ft.
.WED...S wind 25 kt. Seas 9 ft.
.WED NIGHT...SE wind 25 kt increasing to 35 kt after midnight.
Seas 8 ft.
.THU...E wind 45 kt. Seas 12 ft.
.THU NIGHT...E wind 60 kt. Seas 16 ft.
.FRI...E wind 50 kt. Seas 13 ft.
.SAT...SE wind 35 kt. Seas 9 ft.
.SUN...SW wind 15 kt. Seas 9 ft.

$$

PKZ165-201315-
Port Heiden to Cape Sarichef-
332 PM AKST Tue Dec 19 2017

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas 18 ft.
.WED...S wind 30 kt increasing to 40 kt in the afternoon. From
Port Moller E, S wind 20 kt increasing to 30 kt in the afternoon. 
Seas 15 ft.
.WED NIGHT...SE wind 35 kt. Seas 14 ft.
.THU...E wind 45 kt. Seas 12 ft.
.THU NIGHT...SE wind 55 kt. Seas 15 ft.
.FRI...SE wind 30 kt. Seas 15 ft.
.SAT...SW wind 30 kt. Seas 18 ft.
.SUN...SW wind 20 kt. Seas 14 ft.

$$

PKZ170-201315-
Cape Sarichef to Nikolski Bering Side-
332 PM AKST Tue Dec 19 2017

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 35 kt. Seas 21 ft.
.WED...S wind 45 kt. Seas 19 ft.
.WED NIGHT...SE wind 40 kt. Seas 19 ft.
.THU...SE wind 40 kt. Seas 14 ft.
.THU NIGHT...SW wind 25 kt. Seas 10 ft.
.FRI THROUGH SAT...W wind 35 kt. Seas 21 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ171-201315-
Unalaska Bay-
332 PM AKST Tue Dec 19 2017

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 15 kt. Seas 2 ft.
.WED...S wind 25 kt increasing to 35 kt in the afternoon. Seas 5
ft.
.WED NIGHT...SE wind 35 kt. Seas 5 ft. Rain.
.THU...SE wind 30 kt. Seas 5 ft.
.THU NIGHT...NW wind 10 kt. Seas 3 ft.
.FRI THROUGH SAT...W wind 20 kt. Seas 3 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ172-201315-
Cape Sarichef to Nikolski Pacific Side-
332 PM AKST Tue Dec 19 2017

...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 25 kt. Seas 16 ft.
.WED...S wind 35 kt. Seas 16 ft.
.WED NIGHT...SE wind 40 kt. Seas 20 ft.
.THU...SE wind 35 kt. Seas 20 ft.
.THU NIGHT...W wind 30 kt. Seas 18 ft.
.FRI...W wind 35 kt. Seas 21 ft.
.SAT...W wind 35 kt. Seas 15 ft.
.SUN...SW wind 15 kt. Seas 10 ft.

$$

PKZ173-201315-
Nikloski to Seguam Island Bering Side-
332 PM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY...

.TONIGHT...SW wind 30 kt becoming S 40 kt after midnight. Seas
20 ft.
.WED...S wind 50 kt. Seas 23 ft.
.WED NIGHT...SE wind 40 kt. Seas 21 ft. Rain.
.THU...SW wind 40 kt. Seas 17 ft.
.THU NIGHT...W wind 45 kt. Seas 29 ft.
.FRI...W wind 40 kt. Seas 27 ft.
.SAT...W wind 35 kt. Seas 14 ft.
.SUN...W wind 15 kt. Seas 9 ft.

$$

PKZ174-201315-
Nikolski to Seguam Island Pacific Side-
332 PM AKST Tue Dec 19 2017

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 25 kt becoming S 35 kt after midnight. Seas
18 ft.
.WED...S wind 45 kt. Seas 24 ft.
.WED NIGHT...SE wind 40 kt. Seas 24 ft. Rain.
.THU AND THU NIGHT...NW wind 40 kt. Seas 25 ft.
.FRI...W wind 40 kt. Seas 25 ft.
.SAT...W wind 35 kt. Seas 16 ft.
.SUN...W wind 15 kt. Seas 9 ft.

$$

PKZ175-201315-
Seguam Island to Adak Bering Side-
332 PM AKST Tue Dec 19 2017

...STORM WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind 45 kt becoming S 55 kt after midnight. Seas
21 ft. Rain.
.WED...S wind 60 kt diminishing to 50 kt in the afternoon. Seas 24 
ft. Rain.
.WED NIGHT...NW wind 35 kt. Seas 13 ft. Rain.
.THU...NW wind 35 kt. Seas 14 ft.
.THU NIGHT...NW wind 45 kt. Seas 27 ft.
.FRI...NW wind 40 kt. Seas 25 ft.
.SAT...W wind 30 kt. Seas 13 ft.
.SUN...W wind 20 kt. Seas 9 ft.

$$

PKZ176-201315-
Seguam Island to Adak Pacific Side-
332 PM AKST Tue Dec 19 2017

...STORM WARNING THROUGH WEDNESDAY...

.TONIGHT...SW wind 35 kt becoming S 55 kt after midnight. Seas
23 ft.
.WED...S wind 55 kt diminishing to 45 kt in the afternoon. Seas
29 ft. Rain.
.WED NIGHT...W wind 40 kt. Seas 26 ft. Rain.
.THU...W wind 35 kt. Seas 18 ft.
.THU NIGHT...NW wind 40 kt. Seas 20 ft.
.FRI...NW wind 35 kt. Seas 19 ft.
.SAT...W wind 30 kt. Seas 14 ft.
.SUN...W wind 20 kt. Seas 9 ft.

$$

PKZ177-201315-
Adak to Kiska-
332 PM AKST Tue Dec 19 2017

...STORM WARNING THROUGH WEDNESDAY...

.TONIGHT...S wind 55 kt. Seas 27 ft. Rain.
.WED...Bering side, W wind 30 kt diminishing to 20 kt in the
afternoon, Seas 20 ft subsiding to 15 ft in the afternoon. Pacific side,
W wind 50 kt diminishing to 25 kt in the afternoon, Seas 28 ft 
subsiding to 20 ft in the afternoon. Snow.
.WED NIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
16 ft.
.THU...NW wind 45 kt. Seas 23 ft.
.THU NIGHT...NW wind 35 kt. Seas 18 ft.
.FRI...W wind 25 kt. Seas 14 ft.
.SAT...W wind 30 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 10 ft.

$$

PKZ178-201315-
Kiska to Attu-
332 PM AKST Tue Dec 19 2017

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...W wind 45 kt becoming NW 30 kt after midnight. Seas
23 ft. Rain.
.WED...W wind 25 kt becoming SW 35 kt in the afternoon. Seas 18
ft. Snow.
.WED NIGHT...W wind 40 kt. Seas 16 ft Bering side...23 ft Pacific 
side. Snow.
.THU...NW wind 40 kt. Seas 21 ft.
.THU NIGHT...W wind 20 kt. Seas 13 ft.
.FRI THROUGH SAT...W wind 30 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 11 ft.

$$

PKZ179-201315-
Pribilof Islands Near Shore Waters-
332 PM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY...

.TONIGHT...SW wind 30 kt increasing to 40 kt after midnight. Seas
23 ft.
.WED...S wind 50 kt. Seas 29 ft. Rain.
.WED NIGHT...S wind 45 kt. Seas 27 ft. Rain.
.THU...SE wind 40 kt. Seas 19 ft.
.THU NIGHT...E wind 30 kt. Seas 14 ft.
.FRI...SW wind 30 kt. Seas 13 ft.
.SAT...W wind 30 kt. Seas 15 ft.
.SUN...SW wind 25 kt. Seas 12 ft.

$$

PKZ180-201315-
Kuskokwim Delta and Etolin Strait-
332 PM AKST Tue Dec 19 2017

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SW wind 35 kt. Seas 16 ft.
.WED...S wind 45 kt. Seas 16 ft.
.WED NIGHT...S wind 45 kt becoming SE 35 kt after midnight. Seas
17 ft.
.THU...SE wind 45 kt. Seas 16 ft.
.THU NIGHT...E wind 55 kt. Seas 20 ft.
.FRI...SE wind 55 kt. Seas 17 ft.
.SAT...S wind 35 kt. Seas 13 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ181-201315-
North and West of Nunivak Island-
332 PM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 18 ft.
.WED...S wind 50 kt. Seas 22 ft.
.WED NIGHT...S wind 50 kt diminishing to 40 kt after midnight.
Seas 23 ft.
.THU AND THU NIGHT...E wind 40 kt. Seas 16 ft.
.FRI...SE wind 40 kt. Seas 15 ft.
.SAT...S wind 30 kt. Seas 13 ft.
.SUN...SW wind 20 kt. Seas 12 ft.

$$

PKZ185-201315-
Saint Matthew Island Waters-
332 PM AKST Tue Dec 19 2017

...STORM WARNING WEDNESDAY AND WEDNESDAY NIGHT...

.TONIGHT...S wind 45 kt. Seas 25 ft. Snow.
.WED...S wind 50 kt. Seas 24 ft. Snow and rain.
.WED NIGHT...E of Saint Matthew Island, S wind 50 kt becoming SE
35 kt after midnight. W of Saint Matthew Island, W wind 25 kt
becoming variable 15 kt after midnight. Seas 22 ft subsiding to 16 
ft after midnight.
.THU AND THU NIGHT...NE wind 35 kt. Seas 16 ft.
.FRI...NE wind 35 kt. Seas 15 ft.
.SAT THROUGH SUN...SW wind 30 kt. Seas 13 ft.

$$

544 
FZAK52 PAFC 201253
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
353 AM AKST Wed Dec 20 2017

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.

PKZ199-210200-
353 AM AKST Wed Dec 20 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 985 mb low 230 nm northeast of Shemya will move to the northern
Bering tonight. A 994 mb low 290 nm southwest of Adak will move 
to 200 nm northeast of Adak at 980 mb Thu night, then dissipate 
Fri morning. A 982 mb low will move to the southwestern Gulf Thu 
afternoon then move to 110 nm north of Dutch Harbor at 976 mb Fri
morning.

$$

PKZ150-210200-
South of the AK Peninsula Sitkinak to Castle Cape-
353 AM AKST Wed Dec 20 2017

...STORM WARNING THURSDAY...

.TODAY...W wind 20 kt. Seas 10 ft.
.TONIGHT...SE wind 30 kt. Seas 10 ft.
.THU...E wind 45 kt increasing to 55 kt in the afternoon. Seas 15
ft building to 23 ft in the afternoon. Rain.
.THU NIGHT...SE wind 55 kt. Seas 31 ft.
.FRI...SE wind 40 kt. Seas 25 ft.
.SAT...S wind 30 kt. Seas 25 ft.
.SUN...W wind 20 kt. Seas 12 ft.

$$

PKZ155-210200-
South of the AK Peninsula Castle Cape to Cape Sarichef-
353 AM AKST Wed Dec 20 2017

...STORM WARNING THURSDAY...

.TODAY...S wind 25 kt except SW 15 kt from the Shumagin Islands E.
Seas 12 ft.
.TONIGHT...SE wind 30 kt. Seas 13 ft. Rain.
.THU...E wind 40 kt increasing to 50 kt in the afternoon. Seas 17
ft building to 23 ft in the afternoon. Rain.
.THU NIGHT...SE wind 50 kt. Seas 26 ft.
.FRI...SE wind 30 kt. Seas 21 ft.
.SAT...SW wind 30 kt. Seas 18 ft.
.SUN...W wind 20 kt. Seas 10 ft.

$$

PKZ160-210200-
Bristol Bay-
353 AM AKST Wed Dec 20 2017

...GALE WARNING TONIGHT AND THURSDAY...

.TODAY...S wind 25 kt. Seas 9 ft.
.TONIGHT...SE wind 25 kt increasing to 35 kt after midnight. Seas
9 ft.
.THU...E wind 45 kt. Seas 12 ft. Rain.
.THU NIGHT...E wind 60 kt. Seas 17 ft.
.FRI...E wind 50 kt. Seas 14 ft.
.SAT...SE wind 30 kt. Seas 10 ft.
.SUN...SW wind 20 kt. Seas 8 ft.

$$

PKZ165-210200-
Port Heiden to Cape Sarichef-
353 AM AKST Wed Dec 20 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...S wind 30 kt increasing to 40 kt in the afternoon. From
Port Moller E, S wind 20 kt increasing to 30 kt in the afternoon.
Seas 15 ft.
.TONIGHT...SE wind 35 kt. Seas 14 ft.
.THU...SE wind 40 kt. From Port Moller E, E wind 35 kt increasing
to 45 kt in the afternoon. Seas 12 ft. Rain.
.THU NIGHT...E wind 55 kt. Seas 15 ft.
.FRI...SE wind 30 kt. Seas 11 ft.
.SAT...SW wind 30 kt. Seas 12 ft.
.SUN...SW wind 25 kt. Seas 11 ft.

$$

PKZ170-210200-
Cape Sarichef to Nikolski Bering Side-
353 AM AKST Wed Dec 20 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...S wind 30 kt increasing to 45 kt in the afternoon. Seas
building to 19 ft.
.TONIGHT...SE wind 40 kt. Seas 19 ft.
.THU...SE wind 40 kt becoming E 30 kt in the afternoon. Seas 15
ft. Rain.
.THU NIGHT...NW wind 25 kt. Seas 9 ft.
.FRI THROUGH SAT...W wind 35 kt. Seas 22 ft.
.SUN...W wind 20 kt. Seas 10 ft.

$$

PKZ171-210200-
Unalaska Bay-
353 AM AKST Wed Dec 20 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 20 kt increasing to 35 kt in the afternoon. Seas 5 
ft.
.TONIGHT...SE wind 35 kt. Seas 5 ft. Rain.
.THU...SE wind 30 kt. Seas 5 ft. Rain.
.THU NIGHT...NW wind 10 kt. Seas 3 ft.
.FRI...W wind 25 kt. Seas 4 ft.
.SAT...W wind 30 kt. Seas 4 ft.
.SUN...SW wind 10 kt. Seas 2 ft.

$$

PKZ172-210200-
Cape Sarichef to Nikolski Pacific Side-
353 AM AKST Wed Dec 20 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...S wind 25 kt increasing to 35 kt in the afternoon. Seas 16 
ft.
.TONIGHT...SE wind 40 kt. Seas 20 ft. Rain.
.THU...SE wind 35 kt. Seas 19 ft. Rain.
.THU NIGHT...W wind 25 kt. Seas 18 ft.
.FRI THROUGH SAT...W wind 35 kt. Seas 19 ft.
.SUN...W wind 20 kt. Seas 8 ft.

$$

PKZ173-210200-
Nikloski to Seguam Island Bering Side-
353 AM AKST Wed Dec 20 2017

...STORM WARNING TODAY...

.TODAY...S wind increasing to 50 kt. Seas 23 ft.
.TONIGHT...SE wind 40 kt. Seas 21 ft. Rain.
.THU...S wind 40 kt becoming W 30 kt in the afternoon. Seas 18 ft.
Rain.
.THU NIGHT...NW wind 45 kt. Seas 28 ft.
.FRI...NW wind 40 kt. Seas 26 ft.
.SAT...W wind 35 kt. Seas 19 ft.
.SUN...W wind 15 kt. Seas 10 ft.

$$

PKZ174-210200-
Nikolski to Seguam Island Pacific Side-
353 AM AKST Wed Dec 20 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...S wind increasing to 45 kt. Seas 24 ft.
.TONIGHT...SE wind 40 kt. Seas 24 ft. Rain.
.THU...SW wind 40 kt becoming W 30 kt in the afternoon. Seas 22
ft. Rain.
.THU NIGHT...NW wind 45 kt. Seas 27 ft.
.FRI...NW wind 40 kt. Seas 26 ft.
.SAT...W wind 35 kt. Seas 18 ft.
.SUN...W wind 20 kt. Seas 11 ft.

$$

PKZ175-210200-
Seguam Island to Adak Bering Side-
353 AM AKST Wed Dec 20 2017

...STORM WARNING TODAY...

.TODAY...S wind 55 kt. Seas 24 ft. Rain.
.TONIGHT...NW wind 35 kt. Seas 14 ft. Rain.
.THU...NW wind 35 kt. Seas 14 ft.
.THU NIGHT...NW wind 45 kt. Seas 26 ft.
.FRI...NW wind 40 kt. Seas 24 ft.
.SAT...W wind 30 kt. Seas 15 ft.
.SUN...W wind 20 kt. Seas 12 ft.

$$

PKZ176-210200-
Seguam Island to Adak Pacific Side-
353 AM AKST Wed Dec 20 2017

...STORM WARNING TODAY...

.TODAY...S wind 55 kt diminishing to 45 kt in the afternoon. Seas
29 ft. Rain.
.TONIGHT...W wind 40 kt. Seas 26 ft. Rain.
.THU...NW wind 35 kt. Seas 18 ft.
.THU NIGHT...NW wind 40 kt. Seas 20 ft.
.FRI...NW wind 40 kt. Seas 19 ft.
.SAT...W wind 25 kt. Seas 12 ft.
.SUN...W wind 20 kt. Seas 11 ft.

$$

PKZ177-210200-
Adak to Kiska-
353 AM AKST Wed Dec 20 2017

...STORM WARNING TODAY...

.TODAY...SW wind 50 kt becoming NW 30 kt in the afternoon. Seas 20 ft
subsiding to 15 ft in the afternoon, except Seas 28 ft subsiding to 
20 ft in the afternoon Pacific side.
.TONIGHT...W wind 25 kt increasing to 35 kt after midnight. Seas
16 ft. Snow.
.THU...W wind 45 kt. Seas 15 ft Bering side...25 ft Pacific side.
.THU NIGHT...NW wind 35 kt. Seas 18 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas 14 ft.
.SUN...SW wind 20 kt. Seas 13 ft.

$$

PKZ178-210200-
Kiska to Attu-
353 AM AKST Wed Dec 20 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...W wind 25 kt becoming SW 35 kt in the afternoon. Seas
18 ft. Snow.
.TONIGHT...W wind 40 kt. Seas 21 ft. Freezing spray. Snow.
.THU...NW wind 40 kt. Seas 21 ft. Freezing spray.
.THU NIGHT...W wind 20 kt. Seas 13 ft.
.FRI THROUGH SUN...W wind 25 kt. Seas 13 ft.

$$

PKZ179-210200-
Pribilof Islands Near Shore Waters-
353 AM AKST Wed Dec 20 2017

...STORM WARNING TODAY...

.TODAY...S wind 40 kt increasing to 50 kt in the afternoon. Seas 29 
ft.
.TONIGHT...S wind 45 kt. Seas 27 ft. Rain.
.THU...SE wind 40 kt. Seas 20 ft. Rain.
.THU NIGHT...E wind 30 kt. Seas 14 ft.
.FRI...SW wind 30 kt. Seas 17 ft.
.SAT...NW wind 35 kt. Seas 17 ft.
.SUN...W wind 25 kt. Seas 11 ft.

$$

PKZ180-210200-
Kuskokwim Delta and Etolin Strait-
353 AM AKST Wed Dec 20 2017

...GALE WARNING THROUGH THURSDAY...

.TODAY...S wind 45 kt. Seas 16 ft.
.TONIGHT...S wind 45 kt becoming SE 35 kt after midnight. Seas
17 ft.
.THU...SE wind 45 kt. Seas 17 ft. Rain and snow.
.THU NIGHT...E wind 60 kt. Seas 20 ft.
.FRI...SE wind 55 kt. Seas 18 ft.
.SAT...SE wind 30 kt. Seas 12 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ181-210200-
North and West of Nunivak Island-
353 AM AKST Wed Dec 20 2017

...STORM WARNING THROUGH TONIGHT...

.TODAY...S wind 50 kt. Seas 22 ft. Rain.
.TONIGHT...S wind 50 kt diminishing to 40 kt after midnight. Seas
23 ft.
.THU...SE wind 40 kt. Seas 17 ft. Snow and rain.
.THU NIGHT...E wind 40 kt. Seas 15 ft.
.FRI...SE wind 40 kt. Seas 14 ft.
.SAT...SE wind 25 kt. Seas 11 ft.
.SUN...SW wind 25 kt. Seas 9 ft.

$$

PKZ185-210200-
Saint Matthew Island Waters-
353 AM AKST Wed Dec 20 2017

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 50 kt. Seas 24 ft. Snow and rain.
.TONIGHT...E of Saint Matthew Island, S wind 50 kt becoming SE 35
kt after midnight. W of Saint Matthew Island, W wind 25 kt becoming 
S 15 kt after midnight. Seas 22 ft.
.THU...SE wind 35 kt E of Saint Matthew Island... N 30 kt W of
Saint Matthew Island. Seas 18 ft. Snow and rain.
.THU NIGHT...NE wind 35 kt. Seas 15 ft.
.FRI...NE wind 35 kt. Seas 15 ft.
.SAT...NW wind 30 kt. Seas 16 ft.
.SUN...W wind 30 kt. Seas 12 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion...CORRECTED
National Weather Service Anchorage AK
552 PM AKST Mon Dec 18 2017

.ANALYSIS AND UPPER LEVELS...
The main storm is over the western Bering Sea with a front arcing
just west of the Pribilof Islands then south into the North
Pacific. A stout 140 KT jet is wrapping around this low north
along the front into the Bering Sea with low level warm advection
resulting in the snow changing to rain along the Bering Sea coast
today. This low moves to the Bering Strait region Tuesday under a
large upper level low and trough essentially over the entire
Bering Sea. Trailing in behind this low is yet another low on tap
to move into the central Bering Sea Wednesday. This will be
discussed more in the extended portion.

&&

.MODEL DISCUSSION...
In the short term the models have a good handle on the situation,
but as has been the theme most of this winter, model agreement
rapidly decreases as we move beyond the 48 hour mark. The next
storm heading into the Bering Sea does not have good consensus
amongst the models. However, we are more confidant in strong
winds with this storm.

&&

.AVIATION...
PANC...Low clouds and fog will continue IFR-LIFR conditions
through late tonight. Southeast wind may move in from Turnagain
Arm over the terminal Tuesday morning. Snow will then move over
the terminal Tuesday morning and will likely result in marginal to
IFR conditions over the terminal by late Tuesday afternoon.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
A strong front marching from west to east across the eastern
Bering Sea will begin to elongate and weaken as it reaches
Southcentral and the Gulf on Tuesday. However, deep and moist
southerly upslope flow will focus heavy snow over the Susitna
Valley, with a foot or more of accumulation expected from
Talkeetna northward by the time snow diminishes Tuesday evening.

The forecast for areas to the south of the Susitna Valley (from
the Western Kenai Peninsula to Anchorage and the Matanuska Valley)
is complicated by a surface wave moving northward along the front.
The exact track of this low will determine whether a shallow layer
of southeast winds across the Kenai and Chugach Mountains moves
westward from the mountains. If so, this will warm surface
temperatures to around or above freezing and really cut down on
precipitation amounts right in the lee of the mountains. Even if
the southeast flow does develop, deep south to southwest flow
above this should provide periods of light precipitation during
the day Tuesday.

As the front continues eastward in the late afternoon low level
flow will shift to southwest, ushering in a burst of cold air
advection. Thus, the best chance for accumulating snow will be
right as this shift occurs. The extent of southeast flow earlier
in the day will determine how much surface temperatures warm and
how effectively the snow will accumulate. For now, have introduced
some minor snow accumulation. It does look like the best chance
for snowfall will coincide with the late afternoon/early evening
rush hour for Anchorage and the Matanuska Valley. The southwest
flow will enhance snow amounts along the Talkeetna Mountains,
including the Hatcher Pass area.

Other areas favored by the flow with this front include eastern
Prince William Sound and along the Alaska Range/Wrangell Mountains
in the Copper River Basin. Thus, expect a period of moderate to
heavy snow, except rain or rain/snow mixed in the Cordova area.

A trailing upper level short-wave will bring a chance of showers
Tuesday night and Wednesday, mainly along the mountains.
Otherwise, high pressure will build in from the west, leading to
a cooling and drying trend Wednesday night.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
A front attached to a low in Bering will continue to bring
unsettled weather to the region. The Kuskokwim Delta will see the
worst of it tonight and into tomorrow morning. Strong Southerly
winds ahead of the front will end up blowing the precipitation
around. Current analysis shows snow from Bethel west to the
coast, as well as inland areas of the lower Kuskokwim Valley. With
warming temperatures and a phase change noted on radar moving
east, expect that conditions will transition over to rain into the
overnight hours. This front should move onshore around midnight
near Bethel and a few hours later for Dillingham and areas East.
Winds will transition from a south to southeasterly regime, to
more of a west to southwesterly. Its within this time frame that
the showers should also dwindle. Weather will become benign and
above normal for the next few days before the region slowly cools
down again.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
The active weather pattern continues for the next few days.
Scattered snow showers will remain across the Bering and Aleutian
Chain in the wake of the front that has moved onto the mainland.
A mix of rain and snow is expected along the next front moving to
the western and central Aleutians late Tuesday night into
Wednesday as another low lifts North. This system will have a
colder core as it taps into a cooler air mass from the Kamchatka
Peninsula on its northward track.

&&

.LONG TERM FORECAST (Wednesday through Saturday)...

By Wednesday, the mainland will be experiencing a brief break in
the weather as the North Pacific Ridge builds in, while yet
another storm force low moves into the Bering Sea. Temperatures
over the mainland will cool off, as colder air moves in aloft and
clearing will allow the air mass to cool overnight. Meanwhile, in
the Bering, the storm force low will bring another slug of warm
air aloft and precipitation will be mixed.

After this quick break, the ridge will settle in, forcing the jet
stream southward. The next low pressure systems we see will
approach the state from the south beginning Thursday afternoon,
which will provide a connection to some very moist air from
further south. Models continue to bring two lows across the
Alaska Peninsula, focusing the brunt of the weather first on
Kodiak, then on the southern Kenai Peninsula. There has been some
variation in the model runs on whether the heaviest precipitation
will fall in Kodiak, or later on the coastal Kenai, or even as far
east as Yakutat. Right now the thinking focuses the heaviest rain
on Kodiak for next weekend, but we'll continue to watch these
systems carefully, keeping concerns for holiday travelers in mind.
&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Heavy Snow 145. Special Weather Statement 155.
MARINE...Storms 175-178 412 413. Gales 150 155 160 165 170-174
179-181 185 411 414.

&&

SYNOPSIS AND MODEL DISCUSSION...SA
SOUTHCENTRAL ALASKA...SEB
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...SS
LONG TERM...LF