Gale Warning 531, NWS Anchorage, AK

630 
FZAK52 PAFC 192329
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
329 PM AKDT Thu Oct 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.

PKZ199-201200-
329 PM AKDT Thu Oct 19 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 981 mb low 130 nm southeast of Shemya moves to 195 nm southeast
of Dutch Harbor at a 978 mb low Fri afternoon. The low will 
weaken to 970 mb and continue into the Gulf into Sat night.  A 985 mb 
low near the Seward Peninsula Fri afternoon will move to 50 nm
west of Kipnuk by Sat afternoon at 985 mb. 

$$

PKZ150-201200-
South of the AK Peninsula Sitkinak to Castle Cape-
329 PM AKDT Thu Oct 19 2017

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...NW wind 20 kt. Seas 8 ft.
.FRI...Variable wind 10 kt becoming E 15 kt in the afternoon. Seas 4
ft. Rain showers.
.FRI NIGHT...E wind 25 kt. Seas 8 ft.
.SAT...N wind 25 kt. Seas 10 ft.
.SAT NIGHT...NW wind 25 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 8 ft.
.TUE...S wind 25 kt. Seas 13 ft.

$$

PKZ155-201200-
South of the AK Peninsula Castle Cape to Cape Sarichef-
329 PM AKDT Thu Oct 19 2017

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

.TONIGHT...SE wind 15 kt increasing to 25 kt after midnight. From
the Shumagin Islands E, W wind 15 kt. Seas 5 ft. Rain showers.
.FRI...E wind 25 kt. Seas 8 ft. Rain showers.
.FRI NIGHT...N wind 30 kt. Seas 13 ft.
.SAT...NW wind 25 kt. Seas 13 ft.
.SAT NIGHT...W wind 20 kt. Seas 10 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...W wind 25 kt. Seas 8 ft.
.TUE...S wind 25 kt. Seas 13 ft.

$$

PKZ160-201200-
Bristol Bay-
329 PM AKDT Thu Oct 19 2017

.TONIGHT...NW wind 10 kt becoming E after midnight. Seas 5 ft.
.FRI...E wind 15 kt. Seas 3 ft.
.FRI NIGHT...E wind 15 kt. Seas 3 ft.
.SAT...W wind 15 kt. Seas 4 ft.
.SAT NIGHT...W wind 20 kt. Seas 6 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...S wind 15 kt. Seas 4 ft.
.TUE...SE wind 25 kt. Seas 7 ft.

$$

PKZ165-201200-
Port Heiden to Cape Sarichef-
329 PM AKDT Thu Oct 19 2017

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

.TONIGHT...E wind 10 kt increasing to 20 kt after midnight. From 
Port Moller E, W wind 15 kt in the evening becoming variable 10 kt. 
Seas 6 ft.
.FRI...NE wind 25 kt except NE 15 kt from Port Moller E. Seas 4
ft.
.FRI NIGHT...N wind 25 kt except NW 20 kt from Port Moller E. Seas
6 ft building to 10 ft after midnight.
.SAT AND SAT NIGHT...W wind 25 kt. Seas 10 ft.
.SUN THROUGH MON...SW wind 20 kt. Seas 9 ft.
.TUE...SE wind 25 kt. Seas 8 ft.

$$

PKZ170-201200-
Cape Sarichef to Nikolski Bering Side-
329 PM AKDT Thu Oct 19 2017

...GALE WARNING FRIDAY...

.TONIGHT...E wind 25 kt. Seas 7 ft. Rain.
.FRI...NE wind 25 kt increasing to 35 kt late morning. Seas 11 ft. 
Rain showers.
.FRI NIGHT...N wind 30 kt. Seas 12 ft.
.SAT AND SAT NIGHT...NW wind 20 kt. Seas 9 ft.
.SUN...NW wind 20 kt. Seas 11 ft.
.MON...SW wind 20 kt. Seas 10 ft.
.TUE...SE wind 25 kt. Seas 8 ft.

$$

PKZ171-201200-
Unalaska Bay-
329 PM AKDT Thu Oct 19 2017

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

.TONIGHT...E wind 25 kt. Seas 3 ft. Rain.
.FRI...NE wind 20 kt becoming N 30 kt in the afternoon. Seas 8 ft.
Rain showers.
.FRI NIGHT...N wind 25 kt. Seas 10 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SAT NIGHT...NW wind 15 kt. Seas 5 ft.
.SUN...NW wind 15 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 2 ft.
.TUE...SE wind 20 kt. Seas 3 ft.

$$

PKZ172-201200-
Cape Sarichef to Nikolski Pacific Side-
329 PM AKDT Thu Oct 19 2017

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

.TONIGHT...SE wind 25 kt. Seas 7 ft. Widespread rain showers.
.FRI...W wind 20 kt becoming N 35 kt in the afternoon. Seas 9 ft
building to 15 ft in the afternoon. Rain showers.
.FRI NIGHT...N wind 35 kt. Seas 17 ft.
.SAT...NW wind 25 kt. Seas 13 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 20 kt. Seas 7 ft.
.MON...W wind 25 kt. Seas 10 ft.
.TUE...S wind 25 kt. Seas 12 ft.

$$

PKZ173-201200-
Nikloski to Seguam Island Bering Side-
329 PM AKDT Thu Oct 19 2017

...GALE WARNING FRIDAY...

.TONIGHT...SE wind 25 kt becoming S 10 kt after midnight. Seas 8 ft.
Widespread rain showers.
.FRI...NE wind 35 kt. Seas 16 ft. Rain showers.
.FRI NIGHT...NW wind 30 kt. Seas 13 ft.
.SAT AND SAT NIGHT...NW wind 20 kt. Seas 9 ft.
.SUN...NW wind 25 kt. Seas 12 ft.
.MON...SW wind 20 kt. Seas 11 ft.
.TUE...SE wind 20 kt. Seas 10 ft.

$$

PKZ174-201200-
Nikolski to Seguam Island Pacific Side-
329 PM AKDT Thu Oct 19 2017

...GALE WARNING FRIDAY...

.TONIGHT...SW wind 25 kt. Seas 12 ft. Widespread rain showers.
.FRI...NW wind 20 kt becoming N 40 kt in the afternoon. Seas 21 ft. 
Rain showers.
.FRI NIGHT...NW wind 30 kt. Seas 20 ft.
.SAT...NW wind 20 kt. Seas 12 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 25 kt. Seas 11 ft.
.MON...SW wind 20 kt. Seas 10 ft.
.TUE...SE wind 20 kt. Seas 14 ft.

$$

PKZ175-201200-
Seguam Island to Adak Bering Side-
329 PM AKDT Thu Oct 19 2017

...GALE WARNING FRIDAY...

.TONIGHT...SW wind 20 kt becoming N after midnight. Seas 8 ft.
Rain showers.
.FRI...N wind 35 kt. Seas 15 ft.
.FRI NIGHT...NW wind 25 kt. Seas 12 ft. Rain showers.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 11 ft.
.SUN...NW wind 30 kt. Seas 13 ft.
.MON...SW wind 20 kt. Seas 11 ft.
.TUE...E wind 20 kt. Seas 9 ft.

$$

PKZ176-201200-
Seguam Island to Adak Pacific Side-
329 PM AKDT Thu Oct 19 2017

...GALE WARNING FRIDAY...

.TONIGHT...SW wind 30 kt. Seas 15 ft building to 23 ft after
midnight. Rain showers.
.FRI...N wind 35 kt. Seas 22 ft.
.FRI NIGHT...NW wind 25 kt. Seas 17 ft.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 9 ft.
.SUN...NW wind 25 kt. Seas 10 ft.
.MON...SW wind 20 kt. Seas 11 ft.
.TUE...NW wind 20 kt. Seas 16 ft.

$$

PKZ177-201200-
Adak to Kiska-
329 PM AKDT Thu Oct 19 2017

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...W wind 30 kt becoming N 40 kt after midnight. Seas 18 ft 
Bering side...25 ft Pacific side.
.FRI...N wind 40 kt becoming NW 25 kt in the afternoon. Seas 20 ft.
.FRI NIGHT...NW wind 25 kt. Seas 11 ft. Rain showers.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 11 ft.
.SUN...NW wind 30 kt. Seas 13 ft.
.MON...S wind 20 kt. Seas 14 ft.
.TUE...N wind 25 kt. Seas 16 ft.

$$

PKZ178-201200-
Kiska to Attu-
329 PM AKDT Thu Oct 19 2017

...GALE WARNING TONIGHT...

.TONIGHT...N wind 40 kt. Seas 21 ft.
.FRI...NW wind 30 kt. Seas 16 ft.
.FRI NIGHT...NW wind 30 kt. Seas 11 ft.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 11 ft.
.SUN...W wind 30 kt. Seas 12 ft.
.MON...SW wind 30 kt. Seas 15 ft.
.TUE...N wind 25 kt. Seas 15 ft.

$$

PKZ179-201200-
Pribilof Islands Near Shore Waters-
329 PM AKDT Thu Oct 19 2017

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

.TONIGHT...E wind increasing to 20 kt. Seas 5 ft.
.FRI...N wind 25 kt. Seas 9 ft.
.FRI NIGHT...NW wind 25 kt. Seas 10 ft. Snow showers.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 10 ft.
.SUN...NW wind 25 kt. Seas 9 ft.
.MON...W wind 20 kt. Seas 9 ft.
.TUE...E wind 25 kt. Seas 10 ft.

$$

PKZ180-201200-
Kuskokwim Delta and Etolin Strait-
329 PM AKDT Thu Oct 19 2017

.TONIGHT...NW wind 10 kt. Seas 5 ft.
.FRI...NE wind 20 kt except variable wind less than 10 kt south of 
Cape Newenham. Seas 4 ft. Snow showers and rain showers.
.FRI NIGHT...N wind 20 kt. Seas 6 ft. Snow showers and rain
showers.
.SAT...NW wind 20 kt. Seas 7 ft.
.SAT NIGHT...NW wind 25 kt. Seas 9 ft.
.SUN...NW wind 20 kt. Seas 8 ft.
.MON...SW wind 15 kt. Seas 5 ft.
.TUE...SE wind 25 kt. Seas 8 ft.

$$

PKZ181-201200-
North and West of Nunivak Island-
329 PM AKDT Thu Oct 19 2017

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

.TONIGHT...N wind increasing to 20 kt. Seas 5 ft.
.FRI...NW wind 25 kt. Seas 7 ft. Snow showers.
.FRI NIGHT...NW wind 25 kt. Seas 9 ft. Snow showers.
.SAT AND SAT NIGHT...N wind 25 kt. Seas 10 ft.
.SUN...N wind 25 kt. Seas 8 ft.
.MON...SW wind 20 kt. Seas 8 ft.
.TUE...E wind 20 kt. Seas 7 ft.

$$

PKZ185-201200-
Saint Matthew Island Waters-
329 PM AKDT Thu Oct 19 2017

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

.TONIGHT...N wind 25 kt. Seas 8 ft.
.FRI...N wind 25 kt. Seas 11 ft. Snow showers.
.FRI NIGHT...N wind 30 kt. Seas 13 ft. Snow showers.
.SAT AND SAT NIGHT...N wind 30 kt. Seas 12 ft.
.SUN...N wind 30 kt. Seas 11 ft.
.MON...N wind 25 kt. Seas 9 ft.
.TUE...NE wind 25 kt. Seas 11 ft.

$$

392 
FZAK52 PAFC 201147
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
347 AM AKDT Fri Oct 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.

PKZ199-210115-
347 AM AKDT Fri Oct 20 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...
A 982 mb low 175 nm east of Adak moves to 300 nm southeast of 
Sitkinak and dissipates Fri night. A 988 mb low 50 nm northwest of
Nome moves 90 nm southwest of Bethel at 988 mb Sat night.

$$

PKZ150-210115-
South of the AK Peninsula Sitkinak to Castle Cape-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY...

.TODAY...Variable wind 10 kt becoming E 20 kt in the afternoon.
Seas 4 ft.
.TONIGHT...E wind 25 kt. Seas 8 ft. Rain showers.
.SAT...N wind 25 kt. Seas 10 ft.
.SAT NIGHT...NW wind 20 kt. Seas 9 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 8 ft.
.TUE...S wind 45 kt. Seas 29 ft.

$$

PKZ155-210115-
South of the AK Peninsula Castle Cape to Cape Sarichef-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...E wind 25 kt. Seas 8 ft. Rain showers.
.TONIGHT...N wind 30 kt. Seas 13 ft.
.SAT...NW wind 25 kt. Seas 13 ft.
.SAT NIGHT...W wind 20 kt. Seas 9 ft.
.SUN...W wind 15 kt. Seas 7 ft.
.MON...W wind 20 kt. Seas 5 ft.
.TUE...S wind 50 kt. Seas 29 ft.

$$

PKZ160-210115-
Bristol Bay-
347 AM AKDT Fri Oct 20 2017

.TODAY...E wind 15 kt. Seas 3 ft.
.TONIGHT...E wind 15 kt. Seas 4 ft.
.SAT...W wind 15 kt. Seas 5 ft.
.SAT NIGHT...W wind 20 kt. Seas 5 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.MON...SW wind 15 kt. Seas 4 ft.
.TUE...S wind 40 kt. Seas 10 ft.

$$

PKZ165-210115-
Port Heiden to Cape Sarichef-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NE wind 25 kt except variable 10 kt from Port Moller E.
Seas 5 ft.
.TONIGHT...N wind 25 kt except NW 20 kt from Port Moller E. Seas
9 ft.
.SAT...NW wind 25 kt. Seas 9 ft.
.SAT NIGHT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...W wind 15 kt. Seas 7 ft.
.TUE...SE wind 45 kt. Seas 14 ft.

$$

PKZ170-210115-
Cape Sarichef to Nikolski Bering Side-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING TODAY...

.TODAY...N wind 35 kt. Seas 11 ft. Rain.
.TONIGHT...N wind 30 kt. Seas 12 ft.
.SAT...NW wind 25 kt diminishing to 15 kt in the afternoon. Seas
9 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 20 kt. Seas 8 ft.
.MON...W wind 25 kt. Seas 8 ft.
.TUE...S wind 45 kt. Seas 15 ft.

$$

PKZ171-210115-
Unalaska Bay-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NE wind 20 kt becoming N 30 kt in the afternoon. Seas 8
ft. Widespread rain showers.
.TONIGHT...N wind 25 kt. Seas 10 ft. Rain showers.
.SAT...NW wind 20 kt. Seas 7 ft subsiding to 2 ft in the
afternoon. Rain showers.
.SAT NIGHT...NW wind 15 kt. Seas 5 ft.
.SUN THROUGH MON...W wind 15 kt. Seas 4 ft.
.TUE...S wind 45 kt. Seas 6 ft.

$$

PKZ172-210115-
Cape Sarichef to Nikolski Pacific Side-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 15 kt becoming N 35 kt in the afternoon. Seas 9 ft
building to 16 ft in the afternoon.
.TONIGHT...N wind 35 kt. Seas 17 ft.
.SAT...NW wind 25 kt. Seas 12 ft.
.SAT NIGHT...NW wind 15 kt. Seas 7 ft.
.SUN...NW wind 20 kt. Seas 6 ft.
.MON...W wind 25 kt. Seas 5 ft.
.TUE...S wind 50 kt. Seas 28 ft.

$$

PKZ173-210115-
Nikloski to Seguam Island Bering Side-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING TODAY...

.TODAY...SW wind 20 kt becoming NE 35 kt in the morning. Seas 16 ft.
.TONIGHT...NW wind 30 kt. Seas 13 ft.
.SAT...NW wind 20 kt. Seas 10 ft. Rain showers.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 25 kt. Seas 10 ft.
.MON...W wind 35 kt. Seas 10 ft.
.TUE...S wind 40 kt. Seas 18 ft.

$$

PKZ174-210115-
Nikolski to Seguam Island Pacific Side-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING TODAY...

.TODAY...SW wind 25 kt becoming N 35 kt in the afternoon. Seas 21 
ft.
.TONIGHT...NW wind 30 kt. Seas 20 ft.
.SAT...NW wind 20 kt. Seas 12 ft. Rain showers.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft.
.SUN...NW wind 20 kt. Seas 9 ft.
.MON...W wind 40 kt. Seas 10 ft.
.TUE...S wind 45 kt. Seas 23 ft.

$$

PKZ175-210115-
Seguam Island to Adak Bering Side-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING TODAY...

.TODAY...N wind 35 kt. Seas 15 ft. Rain showers.
.TONIGHT...NW wind 25 kt. Seas 12 ft. Rain showers.
.SAT...NW wind 25 kt. Seas 10 ft. Rain showers.
.SAT NIGHT...NW wind 25 kt. Seas 12 ft.
.SUN...NW wind 30 kt. Seas 13 ft.
.MON...SW wind 40 kt. Seas 12 ft.
.TUE...SW wind 40 kt. Seas 18 ft.

$$

PKZ176-210115-
Seguam Island to Adak Pacific Side-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING TODAY...

.TODAY...N wind 35 kt. Seas 22 ft.
.TONIGHT...NW wind 25 kt. Seas 17 ft.
.SAT...NW wind 25 kt. Seas 10 ft. Rain showers.
.SAT NIGHT...NW wind 25 kt. Seas 9 ft.
.SUN...NW wind 30 kt. Seas 9 ft.
.MON THROUGH TUE...SW wind 40 kt. Seas 19 ft.

$$

PKZ177-210115-
Adak to Kiska-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING TODAY...

.TODAY...N wind 35 kt becoming NW 25 kt in the afternoon. Seas
20 ft.
.TONIGHT...NW wind 25 kt. Seas 11 ft.  and snow showers.
.SAT...NW wind 30 kt. Seas 10 ft. Rain showers.
.SAT NIGHT...NW wind 30 kt. Seas 13 ft.
.SUN...NW wind 30 kt. Seas 13 ft.
.MON...S wind 40 kt. Seas 17 ft.
.TUE...W wind 45 kt. Seas 26 ft.

$$

PKZ178-210115-
Kiska to Attu-
347 AM AKDT Fri Oct 20 2017

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt diminishing to 25 kt in the morning. Seas 16 
ft. Rain showers.
.TONIGHT...NW wind 30 kt. Seas 11 ft. Snow showers and rain
showers.
.SAT...NW wind 30 kt. Seas 11 ft. Rain showers and snow showers.
.SAT NIGHT...NW wind 30 kt. Seas 12 ft.
.SUN...W wind 30 kt. Seas 12 ft.
.MON...S wind 40 kt. Seas 17 ft.
.TUE...NW wind 50 kt. Seas 28 ft.

$$

PKZ179-210115-
Pribilof Islands Near Shore Waters-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NE wind 15 kt becoming NW 25 kt in the afternoon. Seas 9 
ft.
.TONIGHT...NW wind 25 kt. Seas 10 ft.
.SAT...NW wind 25 kt. Seas 9 ft. Snow showers.
.SAT NIGHT...NW wind 20 kt. Seas 9 ft.
.SUN...NW wind 20 kt. Seas 8 ft.
.MON...W wind 20 kt. Seas 8 ft.
.TUE...SE wind 40 kt. Seas 21 ft.

$$

PKZ180-210115-
Kuskokwim Delta and Etolin Strait-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...NE wind 10 kt increasing to 20 kt in the afternoon. Seas
4 ft. Snow showers.
.TONIGHT...N wind 20 kt. Seas 7 ft. Snow showers.
.SAT...NW wind 25 kt. Seas 7 ft. Snow showers.
.SAT NIGHT...NW wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 6 ft.
.TUE...SE wind 40 kt. Seas 15 ft.

$$

PKZ181-210115-
North and West of Nunivak Island-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY TONIGHT AND SATURDAY...

.TODAY...N wind 20 kt. Seas 7 ft. Snow showers.
.TONIGHT...NW wind 25 kt. Seas 10 ft. Snow showers.
.SAT...N wind 25 kt. Seas 9 ft. Snow showers.
.SAT NIGHT...N wind 25 kt. Seas 8 ft.
.SUN...N wind 25 kt. Seas 8 ft.
.MON...W wind 20 kt. Seas 6 ft.
.TUE...SE wind 35 kt. Seas 13 ft.

$$

PKZ185-210115-
Saint Matthew Island Waters-
347 AM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...N wind 25 kt. Seas 11 ft. Snow showers.
.TONIGHT...N wind 30 kt. Seas 13 ft. Snow showers.
.SAT...N wind 30 kt. Seas 13 ft. Snow showers.
.SAT NIGHT...N wind 30 kt. Seas 12 ft.
.SUN...NW wind 30 kt. Seas 12 ft.
.MON...NW wind 20 kt. Seas 8 ft.
.TUE...E wind 35 kt. Seas 17 ft.

$$

046 
FZAK52 PAFC 202310
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
310 PM AKDT Fri Oct 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.

PKZ199-211200-
310 PM AKDT Fri Oct 20 2017
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 979 mb low 150 nm southwest of Cold Bay will strengthen and move
into the Gulf by late Fri night. A 986 mb low 55 nm southeast of 
Nome will maintain intensity and move to near Hooper Bay Sat 
afternoon and then weaken to 995 mb 70 nm east of Mekoryuk Sun 
afternoon.

$$

PKZ150-211200-
South of the AK Peninsula Sitkinak to Castle Cape-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...NE wind increasing to 25 kt. Seas 8 ft.
.SAT...N wind 20 kt. Seas 10 ft.
.SAT NIGHT...NW wind 20 kt. Seas 10 ft.
.SUN...SW wind 20 kt. Seas 7 ft.
.SUN NIGHT...W wind 15 kt. Seas 8 ft.
.MON...W wind 20 kt. Seas 6 ft.
.TUE THROUGH WED...S wind 45 kt. Seas 29 ft.

$$

PKZ155-211200-
South of the AK Peninsula Castle Cape to Cape Sarichef-
310 PM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TONIGHT...NE wind 25 kt. Seas 12 ft.
.SAT...NW wind 25 kt. Seas 12 ft.
.SAT NIGHT...W wind 20 kt. Seas 9 ft.
.SUN AND SUN NIGHT...W wind 15 kt. Seas 6 ft.
.MON...W wind 20 kt. Seas 5 ft.
.TUE...S wind 50 kt. Seas 29 ft.
.WED...S wind 40 kt. Seas 29 ft.

$$

PKZ160-211200-
Bristol Bay-
310 PM AKDT Fri Oct 20 2017

.TONIGHT...E wind 15 kt diminishing to 10 kt after midnight. Seas
3 ft.
.SAT...Variable wind 10 kt becoming W in the afternoon. Seas 3 ft.
.SAT NIGHT...W wind 15 kt. Seas 5 ft.
.SUN...SW wind 20 kt. Seas 5 ft.
.SUN NIGHT...SW wind 15 kt. Seas 4 ft.
.MON...SW wind 15 kt. Seas 4 ft.
.TUE THROUGH WED...SE wind 40 kt. Seas 10 ft.

$$

PKZ165-211200-
Port Heiden to Cape Sarichef-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...N wind 25 kt. From Port Moller E...E wind 15 kt becoming
NW after midnight. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 8 ft.
.SAT NIGHT...W wind 20 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.SUN NIGHT...W wind 15 kt. Seas 6 ft.
.MON...W wind 15 kt. Seas 6 ft.
.TUE...SE wind 45 kt. Seas 14 ft.
.WED...S wind 30 kt. Seas 10 ft.

$$

PKZ170-211200-
Cape Sarichef to Nikolski Bering Side-
310 PM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TONIGHT...N wind 30 kt. Seas 11 ft.
.SAT...NW wind 20 kt. Seas 9 ft. Snow showers.
.SAT NIGHT...NW wind 15 kt. Seas 7 ft. Snow showers.
.SUN...NW wind 20 kt. Seas 7 ft.
.SUN NIGHT...NW wind 15 kt. Seas 8 ft.
.MON...W wind 25 kt. Seas 8 ft.
.TUE...S wind 45 kt. Seas 15 ft.
.WED...W wind 30 kt. Seas 17 ft.

$$

PKZ171-211200-
Unalaska Bay-
310 PM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 25 kt. Gusts to 35 kt. Seas 9 ft. Rain showers.
.SAT...NW wind 20 kt becoming W 10 kt in the afternoon. Seas 7 ft
subsiding to 2 ft in the afternoon. Snow showers and rain showers.
.SAT NIGHT...NW wind 15 kt. Seas 5 ft. Snow showers.
.SUN...W wind 15 kt. Seas 2 ft.
.SUN NIGHT...NW wind 10 kt. Seas 3 ft.
.MON...W wind 15 kt. Seas 3 ft.
.TUE...S wind 45 kt. Seas 6 ft.
.WED...W wind 20 kt. Seas 4 ft.

$$

PKZ172-211200-
Cape Sarichef to Nikolski Pacific Side-
310 PM AKDT Fri Oct 20 2017

...GALE WARNING TONIGHT...

.TONIGHT...N wind 35 kt. Seas 17 ft.
.SAT...NW wind 25 kt. Seas 12 ft.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft. Rain showers.
.SUN AND SUN NIGHT...NW wind 15 kt. Seas 5 ft.
.MON...W wind 25 kt. Seas 5 ft.
.TUE...S wind 50 kt. Seas 28 ft.
.WED...W wind 30 kt. Seas 24 ft.

$$

PKZ173-211200-
Nikloski to Seguam Island Bering Side-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...N wind 30 kt. Seas 12 ft.
.SAT...W wind 20 kt. Seas 9 ft. Snow showers and rain showers.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft. Snow showers.
.SUN...NW wind 20 kt. Seas 10 ft.
.SUN NIGHT...NW wind 25 kt. Seas 10 ft.
.MON...SW wind 35 kt. Seas 9 ft.
.TUE...S wind 40 kt. Seas 18 ft.
.WED...NW wind 40 kt. Seas 25 ft.

$$

PKZ174-211200-
Nikolski to Seguam Island Pacific Side-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...N wind 30 kt. Seas 20 ft subsiding to 15 ft after
midnight.
.SAT...W wind 20 kt. Seas 12 ft. Rain showers and snow showers.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft. Snow showers.
.SUN AND SUN NIGHT...NW wind 20 kt. Seas 9 ft.
.MON...W wind 40 kt. Seas 10 ft.
.TUE...S wind 45 kt. Seas 23 ft.
.WED...W wind 40 kt. Seas 29 ft.

$$

PKZ175-211200-
Seguam Island to Adak Bering Side-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...NW wind 20 kt. Seas 10 ft. Rain showers and snow
showers.
.SAT...NW wind 25 kt. Seas 10 ft. Snow showers and rain showers.
.SAT NIGHT...NW wind 25 kt. Seas 11 ft. Snow showers.
.SUN AND SUN NIGHT...NW wind 30 kt. Seas 13 ft.
.MON...S wind 40 kt. Seas 12 ft.
.TUE...SW wind 40 kt. Seas 18 ft.
.WED...NW wind 40 kt. Seas 27 ft.

$$

PKZ176-211200-
Seguam Island to Adak Pacific Side-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...NW wind 25 kt. Seas 16 ft.
.SAT...NW wind 25 kt. Seas 9 ft. Rain showers and snow showers.
.SAT NIGHT...NW wind 25 kt. Seas 9 ft. Snow showers.
.SUN AND SUN NIGHT...NW wind 30 kt. Seas 9 ft.
.MON THROUGH TUE...SW wind 40 kt. Seas 19 ft.
.WED...NW wind 40 kt. Seas 27 ft.

$$

PKZ177-211200-
Adak to Kiska-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...NW wind 25 kt. Seas 11 ft. Rain showers and snow
showers.
.SAT...NW wind 30 kt. Seas 10 ft. Snow showers and rain showers.
.SAT NIGHT...NW wind 25 kt. Seas 12 ft. Snow showers.
.SUN...NW wind 30 kt. Seas 13 ft.
.SUN NIGHT...NW wind 25 kt. Seas 13 ft.
.MON...S wind 40 kt. Seas 17 ft.
.TUE...W wind 45 kt. Seas 26 ft.
.WED...NW wind 45 kt. Seas 26 ft.

$$

PKZ178-211200-
Kiska to Attu-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...NW wind 30 kt. Seas 11 ft. Snow showers.
.SAT...NW wind 30 kt. Seas 10 ft. Snow showers.
.SAT NIGHT...NW wind 30 kt. Seas 11 ft. Snow showers.
.SUN...NW wind 30 kt. Seas 12 ft.
.SUN NIGHT...SW wind 30 kt. Seas 11 ft.
.MON...S wind 45 kt. Seas 21 ft.
.TUE...NW wind 50 kt. Seas 28 ft.
.WED...NW wind 40 kt. Seas 27 ft.

$$

PKZ179-211200-
Pribilof Islands Near Shore Waters-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...NW wind 25 kt. Seas 9 ft. Snow showers.
.SAT...NW wind 20 kt. Seas 8 ft. Snow showers.
.SAT NIGHT...NW wind 20 kt. Seas 8 ft. Snow showers.
.SUN...NW wind 20 kt. Seas 8 ft.
.SUN NIGHT...NW wind 15 kt. Seas 8 ft.
.MON...W wind 20 kt. Seas 7 ft.
.TUE...SE wind 40 kt. Seas 21 ft.
.WED...N wind 35 kt. Seas 19 ft.

$$

PKZ180-211200-
Kuskokwim Delta and Etolin Strait-
310 PM AKDT Fri Oct 20 2017

...SMALL CRAFT ADVISORY SATURDAY NIGHT...

.TONIGHT...N wind 20 kt. Seas 5 ft. Snow showers.
.SAT...NW wind 20 kt. Seas 6 ft. Snow showers.
.SAT NIGHT...W wind 25 kt. Seas 7 ft. Snow showers.
.SUN...NW wind 20 kt. Seas 7 ft.
.SUN NIGHT...W wind 15 kt. Seas 5 ft.
.MON...W wind 15 kt. Seas 5 ft.
.TUE THROUGH WED...E wind 40 kt. Seas 15 ft.

$$

PKZ181-211200-
North and West of Nunivak Island-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...NW wind 25 kt. Seas 9 ft. Snow showers.
.SAT...NW wind 25 kt. Seas 9 ft. Snow showers.
.SAT NIGHT...N wind 25 kt. Seas 9 ft. Snow showers.
.SUN AND SUN NIGHT...NW wind 20 kt. Seas 7 ft.
.MON...W wind 15 kt. Seas 6 ft.
.TUE...SE wind 35 kt. Seas 13 ft.
.WED...NE wind 35 kt. Seas 13 ft.

$$

PKZ185-211200-
Saint Matthew Island Waters-
310 PM AKDT Fri Oct 20 2017

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

.TONIGHT...N wind 30 kt. Seas 13 ft. Snow showers.
.SAT...N wind 30 kt. Seas 12 ft. Snow showers.
.SAT NIGHT...N wind 30 kt. Seas 12 ft. Snow showers.
.SUN...N wind 30 kt. Seas 12 ft.
.SUN NIGHT...NW wind 25 kt. Seas 11 ft.
.MON...NW wind 20 kt. Seas 9 ft.
.TUE...E wind 35 kt. Seas 17 ft.
.WED...N wind 35 kt. Seas 17 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
420 PM AKDT Wed Oct 18 2017

.ANALYSIS AND UPPER LEVELS...
The main feature on water vapor satellite is a complex upper low
spinning in the eastern Gulf of Alaska. A very zonal jet stream
lies south of the Aleutian Chain, driving the predominant storm
track from the northwest Pacific straight eastward into the Gulf.
While most of the active weather associated with the Gulf system
is out of our area, the main impact on the mainland has been to
draw a colder air mass in from the interior of the state, while
increasing winds along the Gulf coast through favored gaps in the
mountains. Much of Southcentral Alaska is clear as cold advection
dries the air mass out, but the upper trough is currently keeping
a mid-level deck on the west side of the Alaska/Aleutian Range.
Much of the Bering Sea is engulfed in instability showers as
arctic air streams over the warmer water. The next system to
progress across the Chain is beginning to affect the Western
Aleutians.

&&

.MODEL DISCUSSION...
Guidance in the short term is in great agreement with the
evolution of the synoptic flow. There are differences with low
positions within the complex Gulf circulation but effects on our
forecast are the same in any solution. The biggest differences in
the models come late Thursday into Friday as the upper level
trough captures some energy from the Gulf over the eastern portion
of the Copper River Basin. Some guidance shows a prolonged light
snow for the McCarthy area while other are much drier. High
resolution guidance will be utilized for this forecast package to
capture outflow winds along the north Gulf coast a little better.

&&

.AVIATION...
PANC...VFR conditions and light winds will persist.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
Much of Southcentral AK will settle into a dry northwest flow
pattern through Thursday evening as a large low over the
southeastern Gulf departs towards the Panhandle and a weak upper
trough pushes across the region from the west. This will leave
gusty outflow winds as the primary short term forecast challenge
as most of the area remains precipitation free. Upper level
support for these winds looks to be somewhat lacking, leaving the
surface pressure gradient and cold air advection from the
interior as the primary drivers of this event. This should keep
outflow winds more on the modest side, although strong gusts can
still be expected through the typical coastal gap flow areas
including Valdez, Whittier, and Seward. Winds should begin to
diminish overnight Thursday as an upper low over the Beaufort Sea
pivots to the western mainland and upper level flow shifts around
to the southwest. Meanwhile, the exception to the dry conditions
expected across most of the area will be the eastern portion of
the Copper River Basin, where the combination of the upper trough
approaching from the west and a weak surface low over the
northeastern Gulf should be sufficient to produce a period of
light snow Thursday into Thursday night. Minor accumulations will
be possible within Wrangell-St. Elias National Park including the
McCarthy area through Friday morning.

&&

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

Northwesterly flow will continue to filter cold air into the
southwest mainland through the next couple of days. Gusty
northwesterly winds over the Alaska Peninsula will taper off
through tomorrow. The southwest mainland area will remain fairly
dry through Friday, with only a couple of exceptions. Unstable
northwesterly flow banking up against the Kuskokwim Mountains and
Alaska Range will squeeze out a few showers in the vicinity of the
mountains as the air is orographically forced upward. In
addition, cold air flowing over the relatively warm ocean waters
will continue to steepen lapse rates and support some isolated
showers along the Kuskokwim Coast and Nunivak Island. Otherwise,
expect mainly dry weather with a continual cooling trend to
slightly below normal temperatures by Friday. Slightly more active
weather will return Friday evening as an arctic low will push
southward into the Kuskokwim Delta, bringing a better focus for
some more organized precipitation.

&&

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

The main feature driving the weather over the Bering Sea and
Aleutians will be a northwest Pacific low tracking east towards
the western Aleutians tonight. As the low moves near Shemya
tomorrow morning, it will be caught up in the base of the
downstream longwave trough over mainland Alaska, preventing any
northward movement into the Bering Sea. As has been the pattern
for the last week or so with a zonal storm track over/south of the
Aleutians, the majority of the impacts of this low and it's
associated front will remain confined to the Aleutians and
southern Bering Sea. Expect a swath of small craft to gale force
winds and rain over the western/central Aleutians and southern
Bering Sea tonight through Friday. As the low departs to the
Northeast Pacific Friday, widespread northerly flow will resume
over the Bering Sea, with increased chances of showers as
instability increases.

Meanwhile further east, small craft force cold northwesterly
winds over the eastern Bering Sea will weaken overnight as
pressure gradients slacken. The area will remain relatively quiet
under a col Thursday before broad northerly flow quickly resumes
Friday.

&&

.LONG TERM FORECAST (Days 3 through 7: Friday night through
Wednesday)...

An active pattern is expected through the long range forecast
through the middle of next week. The main challenge surrounds a
storm system which slides east into the Gulf this weekend
bringing the potential for snow across Southcentral into early
next week.

For the start of the weekend, cold air advection keeps
temperatures below normal across the southern mainland into
Saturday morning under dry conditions as low pressure tracks south
of the Alaska Peninsula to the Gulf. Weak disturbances across the
Gulf will initiate rain showers along a surface low near the
northeast coast heading into Saturday morning, with a few snow
showers moving inland over the eastern Copper River. For locations
along the Bering, including the southwest coast, precipitation
chances increase through the upcoming weekend as an upper low
pressure system in the eastern Bering slowly propagates south
toward Bristol Bay. A colder air mass advecting from the northern
Bering changes precip type mainly to snow except along the
Aleutians where a mix of rain and snow prevail under moderate
temperatures.

The biggest challenge of the upcoming forecast is the storm system
which tracks into the gulf on Saturday. This system is currently
expected to lift a frontal boundary to the northern waters by
Saturday afternoon ahead of a surface low. This low moves across
the central Gulf Saturday night and deepens to 970 mb. This warm
core system will spread rain across the Gulf on Saturday, with
showers along the Gulf coast starting initially as snow mixing
with or changing over to rain through Saturday night. The upper
level low associated with this front begins to lift north towards
Sunday morning, which brings the potential for snow to develop
across inland areas of Southcentral. Models continue to struggle
from run to run on the timing and track of this system, therefore
only small changes were made to increase precipitation chances for
the latter part of the weekend. With high uncertainty during the
mid range forecast, kept changes minimal through the middle of
next week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gale 130-132 150 175-178 352 411 413.

&&

SYNOPSIS AND MODEL DISCUSSION...MTL
SOUTHCENTRAL ALASKA...CB
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...RD
LONG TERM...KH