Gale Warning 487, NWS Anchorage, AK

820 
FZAK52 PAFC 191157
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
357 AM AKDT Sat Sep 19 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.

PKZ199-200045-
357 AM AKDT Sat Sep 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 975 mb low 300 nm west of Shemya this morning will move to 170
nm southwest of Saint Paul at 982 mb Sunday morning. The low then
moves 160 nm south of Cold Bay at 982 mb Monday morning. 

$$

PKZ150-200045-
South of the AK Peninsula Sitkinak to Castle Cape-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY TODAY AND SUNDAY...

.TODAY...N wind 25 kt. Seas 8 ft.
.TONIGHT...W wind 20 kt. Seas 7 ft.
.SUN...SW wind 15 kt becoming S 25 kt in the afternoon. Seas 6 ft.
Rain.
.SUN NIGHT...SE wind 35 kt. Seas 9 ft.
.MON...NE wind 30 kt. Seas 12 ft.
.TUE...N wind 25 kt. Seas 11 ft.
.WED...NW wind 30 kt. Seas 11 ft.

$$

PKZ155-200045-
South of the AK Peninsula Castle Cape to Cape Sarichef-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...NW wind 20 kt. Seas 7 ft.
.TONIGHT...W wind 20 kt. Seas 7 ft. Rain.
.SUN...S wind 30 kt. From the Shumagin Islands E, S wind 20 kt
becoming SE 30 kt in the afternoon. Seas 9 ft. Rain.
.SUN NIGHT...S wind 30 kt. Seas 11 ft.
.MON...N wind 30 kt. Seas 13 ft.
.TUE...NW wind 35 kt. Seas 11 ft.
.WED...NW wind 30 kt. Seas 10 ft.

$$

PKZ160-200045-
Bristol Bay-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...W wind 20 kt. Seas 4 ft.
.TONIGHT...W wind 15 kt becoming SW after midnight. Seas 3 ft.
.SUN...SE wind 15 kt increasing to 25 kt in the afternoon. Seas
4 ft.
.SUN NIGHT...E wind 35 kt. Seas 8 ft.
.MON...NE wind 30 kt. Seas 8 ft.
.TUE...N wind 35 kt. Seas 9 ft.
.WED...NW wind 25 kt. Seas 6 ft.

$$

PKZ165-200045-
Port Heiden to Cape Sarichef-
357 AM AKDT Sat Sep 19 2020

...GALE WARNING SUNDAY...

.TODAY...W wind 20 kt. Seas 4 ft.
.TONIGHT...SE wind 20 kt except SW 15 kt from Port Moller E. Seas
4 ft. Rain.
.SUN...SE wind 35 kt. From Port Moller E, SE wind 20 kt increasing
to 30 kt in the afternoon. Seas 7 ft. Rain.
.SUN NIGHT...E wind 30 kt. Seas 7 ft.
.MON...N wind 35 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 14 ft.
.WED...NW wind 30 kt. Seas 10 ft.

$$

PKZ170-200045-
Cape Sarichef to Nikolski Bering Side-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY TONIGHT AND SUNDAY...

.TODAY...W wind 15 kt. Seas 5 ft. Rain.
.TONIGHT...S wind 30 kt. Seas 7 ft. Rain.
.SUN...S wind 30 kt. Seas 10 ft. Rain.
.SUN NIGHT...W wind 30 kt. Seas 12 ft.
.MON THROUGH TUE...NW wind 35 kt. Seas 15 ft.
.WED...NW wind 30 kt. Seas 10 ft.

$$

PKZ171-200045-
Unalaska Bay-
357 AM AKDT Sat Sep 19 2020

.TODAY...W wind 15 kt. Seas 3 ft.
.TONIGHT...SE wind 10 kt becoming S 20 kt after midnight. Seas 3
ft. Rain.
.SUN...S wind 20 kt. Seas 3 ft. Rain.
.SUN NIGHT...SW wind 15 kt. Seas 5 ft.
.MON...NW wind 35 kt. Seas 14 ft.
.TUE...NW wind 30 kt. Seas 13 ft.
.WED...NW wind 25 kt. Seas 8 ft.

$$

PKZ172-200045-
Cape Sarichef to Nikolski Pacific Side-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY TONIGHT AND SUNDAY...

.TODAY...W wind 15 kt. Seas 7 ft. Rain.
.TONIGHT...S wind 30 kt. Seas 8 ft. Widespread rain showers.
.SUN...S wind 30 kt. Seas 14 ft. Rain.
.SUN NIGHT...W wind 35 kt. Seas 18 ft.
.MON THROUGH TUE...NW wind 40 kt. Seas 15 ft.
.WED...NW wind 35 kt. Seas 9 ft.

$$

PKZ173-200045-
Nikolski to Seguam Island Bering Side-
357 AM AKDT Sat Sep 19 2020

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...SW wind 15 kt becoming S 25 kt in the afternoon. Seas 5
ft. Rain.
.TONIGHT...S wind 35 kt. Seas 10 ft. Rain.
.SUN...W wind 35 kt. Seas 15 ft. Rain.
.SUN NIGHT...NW wind 40 kt. Seas 16 ft.
.MON...NW wind 35 kt. Seas 17 ft.
.TUE...NW wind 30 kt. Seas 13 ft.
.WED...NW wind 25 kt. Seas 9 ft.

$$

PKZ174-200045-
Nikolski to Seguam Island Pacific Side-
357 AM AKDT Sat Sep 19 2020

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...S wind 20 kt. Seas 6 ft. Rain.
.TONIGHT...S wind 35 kt. Seas 13 ft. Rain.
.SUN...W wind 40 kt. Seas 17 ft building to 23 ft in the
afternoon. Rain.
.SUN NIGHT...W wind 45 kt. Seas 26 ft.
.MON...NW wind 40 kt. Seas 21 ft.
.TUE...NW wind 35 kt. Seas 12 ft.
.WED...NW wind 25 kt. Seas 8 ft.

$$

PKZ175-200045-
Seguam Island to Adak Bering Side-
357 AM AKDT Sat Sep 19 2020

...STORM WARNING SUNDAY...

.TODAY...S wind 20 kt increasing to 35 kt in the afternoon. Seas
7 ft. Rain showers.
.TONIGHT...S wind 40 kt becoming SW 30 kt after midnight. Seas
11 ft. Rain.
.SUN...W wind 30 kt increasing to 50 kt in the afternoon. Seas 13
ft building to 20 ft in the afternoon. Rain.
.SUN NIGHT...NW wind 45 kt. Seas 20 ft.
.MON...NW wind 30 kt. Seas 15 ft.
.TUE...NW wind 25 kt. Seas 10 ft.
.WED...NW wind 15 kt. Seas 7 ft.

$$

PKZ176-200045-
Seguam Island to Adak Pacific Side-
357 AM AKDT Sat Sep 19 2020

...STORM WARNING SUNDAY...

.TODAY...SW wind 20 kt increasing to 35 kt in the afternoon. Seas
5 ft building to 9 ft in the afternoon. Rain.
.TONIGHT...S wind 40 kt. Seas 18 ft. Rain.
.SUN...W wind 40 kt increasing to 50 kt in the afternoon. Seas
27 ft.
.SUN NIGHT...NW wind 50 kt. Seas 28 ft.
.MON...NW wind 35 kt. Seas 17 ft.
.TUE...NW wind 25 kt. Seas 8 ft.
.WED...N wind 15 kt. Seas 5 ft.

$$

PKZ177-200045-
Adak to Kiska-
357 AM AKDT Sat Sep 19 2020

...STORM WARNING SUNDAY...

.TODAY...S wind 30 kt increasing to 40 kt in the afternoon. Seas
6 ft building to 14 ft in the afternoon. Rain.
.TONIGHT...SW wind 45 kt. Seas 15 ft Bering side... 25 ft Pac
side. Rain.
.SUN...W wind 40 kt increasing to 50 kt in the afternoon. Seas 21
ft Bering side...25 ft Pac side.
.SUN NIGHT...NW wind 45 kt. Seas 20 ft.
.MON...NW wind 30 kt. Seas 11 ft.
.TUE...N wind 15 kt. Seas 7 ft.
.WED...NE wind 20 kt. Seas 6 ft.

$$

PKZ178-200045-
Kiska to Attu-
357 AM AKDT Sat Sep 19 2020

...STORM WARNING TONIGHT...

.TODAY...S wind 40 kt. Seas 13 ft building to 18 ft in the
afternoon. Rain.
.TONIGHT...W wind 50 kt becoming NW 40 kt after midnight. Seas 18
ft Bering side...27 ft Pac side.
.SUN...NW wind 35 kt. Seas 18 ft.
.SUN NIGHT...NW wind 30 kt. Seas 13 ft.
.MON...NW wind 15 kt. Seas 9 ft.
.TUE THROUGH WED...NE wind 20 kt. Seas 7 ft.

$$

PKZ179-200045-
Pribilof Islands Near Shore Waters-
357 AM AKDT Sat Sep 19 2020

...GALE WARNING SUNDAY...

.TODAY...W wind 15 kt. Seas 4 ft.
.TONIGHT...SE wind 25 kt. Seas 7 ft. Rain.
.SUN...E wind 30 kt increasing to 40 kt in the afternoon. Seas
12 ft. Rain.
.SUN NIGHT...NE wind 40 kt. Seas 15 ft.
.MON...N wind 35 kt. Seas 13 ft.
.TUE...NW wind 30 kt. Seas 10 ft.
.WED...NW wind 25 kt. Seas 7 ft.

$$

PKZ180-200045-
Kuskokwim Delta and Etolin Strait-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...W wind 15 kt. Seas 4 ft.
.TONIGHT...W wind 10 kt becoming S after midnight. Seas 3 ft.
.SUN...SE wind 20 kt becoming E 30 kt in the afternoon. Seas 7 ft.
.SUN NIGHT...NE wind 35 kt. Seas 10 ft.
.MON THROUGH WED...NW wind 30 kt. Seas 9 ft.

$$

PKZ181-200045-
North and West of Nunivak Island-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY...

.TODAY...W wind 15 kt. Seas 4 ft.
.TONIGHT...Variable wind 10 kt becoming SE 15 kt after midnight.
Seas 3 ft.
.SUN...E wind 25 kt. Seas 6 ft.
.SUN NIGHT...NE wind 25 kt. Seas 8 ft.
.MON...N wind 25 kt. Seas 8 ft.
.TUE...N wind 30 kt. Seas 8 ft.
.WED...N wind 25 kt. Seas 6 ft.

$$

PKZ185-200045-
Saint Matthew Island Waters-
357 AM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY TONIGHT AND SUNDAY...

.TODAY...Variable wind 10 kt becoming S 15 kt in the afternoon.
Seas 4 ft.
.TONIGHT...SE wind 20 kt E of Saint Matthew Island...E 25 kt W of
Saint Matthew Island. Seas 5 ft.
.SUN...NE wind 30 kt. Seas 11 ft.
.SUN NIGHT...NE wind 30 kt. Seas 11 ft.
.MON THROUGH TUE...NW wind 25 kt. Seas 8 ft.
.WED...NW wind 20 kt. Seas 5 ft.

$$

698 
FZAK52 PAFC 192350
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
350 PM AKDT Sat Sep 19 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.

PKZ199-201230-
350 PM AKDT Sat Sep 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 975 mb low 80 nm west of Shemya this afternoon will move to 160
nm north of Nikolski at 980 mb Sunday afternoon. The low then 
moves to 275 nm southeast of Sand Point at 983 mb Monday 
afternoon.

$$

PKZ150-201230-
South of the AK Peninsula Sitkinak to Castle Cape-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY TONIGHT AND SUNDAY NIGHT...

.TONIGHT...W wind 20 kt. Seas 7 ft.
.SUN...S wind 20 kt. Seas 6 ft.
.SUN NIGHT...SE wind 30 kt. Seas 9 ft. Rain.
.MON...E wind 30 kt. Seas 10 ft.
.MON NIGHT...NE wind 35 kt. Seas 12 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 12 ft.
.THU...NW wind 25 kt. Seas 10 ft.

$$

PKZ155-201230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY AND SUNDAY NIGHT...

.TONIGHT...W wind 20 kt. Seas 7 ft.
.SUN...S wind 30 kt. From the Shumagin Islands E, S wind 20 kt
becoming SE 30 kt in the afternoon. Seas 9 ft. Rain.
.SUN NIGHT...S wind 20 kt becoming variable 10 kt after midnight. 
From the Shumagin Islands E, S wind 30 kt becoming variable 10 kt 
after midnight. Seas 11 ft. Rain.
.MON...N wind 20 kt. Seas 14 ft.
.MON NIGHT...N wind 25 kt. Seas 13 ft.
.TUE...NW wind 35 kt. Seas 12 ft.
.WED...NW wind 30 kt. Seas 10 ft.
.THU...NW wind 25 kt. Seas 10 ft.

$$

PKZ160-201230-
Bristol Bay-
350 PM AKDT Sat Sep 19 2020

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...W wind 15 kt. Seas 3 ft.
.SUN...SE wind 15 kt increasing to 25 kt in the afternoon. Seas
4 ft.
.SUN NIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas 8
ft.
.MON AND MON NIGHT...NE wind 30 kt. Seas 8 ft.
.TUE...N wind 30 kt. Seas 8 ft.
.WED...NW wind 25 kt. Seas 6 ft.
.THU...NW wind 20 kt. Seas 5 ft.

$$

PKZ165-201230-
Port Heiden to Cape Sarichef-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...SW wind 15 kt becoming SE 25 kt after midnight. From Port
Moller E, SW wind 15 kt. Seas 4 ft.
.SUN...SE wind 30 kt. Seas 7 ft. Rain.
.SUN NIGHT...SE wind 25 kt becoming NE 15 kt after midnight. From
Port Moller E, E wind 30 kt. Seas 8 ft.
.MON AND MON NIGHT...N wind 30 kt. Seas 11 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 11 ft.
.THU...NW wind 20 kt. Seas 8 ft.

$$

PKZ170-201230-
Cape Sarichef to Nikolski Bering Side-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...S wind 20 kt increasing to 30 kt after midnight. Seas 7 
ft. Rain.
.SUN...S wind 30 kt. Seas 11 ft. Rain.
.SUN NIGHT...NW wind 30 kt. From Unalaska E, S wind 20 kt in the
evening becoming NE 10 kt. Seas 13 ft. Rain.
.MON AND MON NIGHT...N wind 35 kt. Seas 15 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 11 ft.
.THU...NW wind 15 kt. Seas 7 ft.

$$

PKZ171-201230-
Unalaska Bay-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY...

.TONIGHT...S wind 15 kt increasing to 20 kt after midnight. Seas 3 
ft. Rain.
.SUN...S wind 25 kt diminishing to 15 kt in the afternoon. Seas 4
ft subsiding to 2 ft in the afternoon. Rain.
.SUN NIGHT...S wind 10 kt becoming NW after midnight. Seas 3 ft. 
Rain.
.MON...NW wind 20 kt. Seas 7 ft.
.MON NIGHT...NW wind 30 kt. Seas 13 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.WED...NW wind 25 kt. Seas 8 ft.
.THU...NW wind 10 kt. Seas 2 ft.

$$

PKZ172-201230-
Cape Sarichef to Nikolski Pacific Side-
350 PM AKDT Sat Sep 19 2020

...GALE WARNING SUNDAY NIGHT...

.TONIGHT...S wind 20 kt increasing to 30 kt after midnight. Seas 8 
ft. Rain.
.SUN...SW wind 30 kt. Seas 14 ft. Rain.
.SUN NIGHT...SW wind 35 kt becoming NW 25 kt after midnight. Seas 18
ft. Rain.
.MON...NW wind 35 kt. Seas 18 ft.
.MON NIGHT...NW wind 40 kt. Seas 13 ft.
.TUE THROUGH WED...NW wind 35 kt. Seas 11 ft.
.THU...NW wind 20 kt. Seas 7 ft.

$$

PKZ173-201230-
Nikolski to Seguam Island Bering Side-
350 PM AKDT Sat Sep 19 2020

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...S wind 30 kt. Seas 11 ft. Rain.
.SUN...SW wind 35 kt. Seas 16 ft. Rain.
.SUN NIGHT...NW wind 40 kt. Seas 16 ft.
.MON...NW wind 35 kt. Seas 17 ft.
.MON NIGHT...NW wind 30 kt. Seas 13 ft.
.TUE...NW wind 30 kt. Seas 12 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.THU...Variable wind 10 kt. Seas 6 ft.

$$

PKZ174-201230-
Nikolski to Seguam Island Pacific Side-
350 PM AKDT Sat Sep 19 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...S wind 35 kt. Seas 8 ft building to 13 ft after
midnight. Rain.
.SUN...SW wind 35 kt becoming W 40 kt in the afternoon. Seas 16 ft
building to 23 ft in the afternoon. Rain.
.SUN NIGHT...NW wind 40 kt. Seas 27 ft.
.MON...NW wind 40 kt. Seas 22 ft.
.MON NIGHT...NW wind 35 kt. Seas 14 ft.
.TUE...NW wind 35 kt. Seas 12 ft.
.WED...NW wind 25 kt. Seas 8 ft.
.THU...Variable wind 10 kt. Seas 6 ft.

$$

PKZ175-201230-
Seguam Island to Adak Bering Side-
350 PM AKDT Sat Sep 19 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SW wind 35 kt. Seas 14 ft. Rain.
.SUN...W wind 35 kt increasing to 45 kt in the afternoon. Seas
20 ft. Rain.
.SUN NIGHT...NW wind 40 kt diminishing to 30 kt after midnight.
Seas 20 ft.
.MON...NW wind 30 kt. Seas 15 ft.
.MON NIGHT...NW wind 25 kt. Seas 11 ft.
.TUE...NW wind 25 kt. Seas 10 ft.
.WED THROUGH THU...NW wind 15 kt. Seas 7 ft.

$$

PKZ176-201230-
Seguam Island to Adak Pacific Side-
350 PM AKDT Sat Sep 19 2020

...STORM WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 14 ft building to 20 ft after
midnight. Rain.
.SUN...W wind 40 kt increasing to 50 kt in the afternoon. Seas 27 
ft.
.SUN NIGHT...W wind 50 kt becoming NW 40 kt after midnight. Seas
28 ft subsiding to 22 ft after midnight.
.MON...NW wind 35 kt. Seas 16 ft.
.MON NIGHT...NW wind 30 kt. Seas 10 ft.
.TUE...NW wind 25 kt. Seas 9 ft.
.WED THROUGH THU...N wind 15 kt. Seas 6 ft.

$$

PKZ177-201230-
Adak to Kiska-
350 PM AKDT Sat Sep 19 2020

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SW wind 45 kt. Bering side, seas 19 ft. Pacific side, 
seas 21 ft building to 28 ft after midnight.
.SUN...W wind 45 kt. Seas 19 ft Bering side...27 ft Pacific side.
.SUN NIGHT...NW wind 40 kt diminishing to 30 kt after midnight.
Seas
19 ft subsiding to 14 ft after midnight.
.MON...NW wind 25 kt. Seas 11 ft.
.MON NIGHT...NW wind 20 kt. Seas 9 ft.
.TUE...N wind 15 kt. Seas 7 ft.
.WED...NE wind 20 kt. Seas 6 ft.
.THU...NW wind 15 kt. Seas 9 ft.

$$

PKZ178-201230-
Kiska to Attu-
350 PM AKDT Sat Sep 19 2020

...STORM WARNING TONIGHT...

.TONIGHT...W wind 50 kt becoming NW 40 kt after midnight. Seas 19 ft
Bering side...28 ft Pacific side.
.SUN...NW wind 40 kt diminishing to 30 kt in the afternoon. Seas 19 
ft.
.SUN NIGHT...NW wind 20 kt. Seas 12 ft.
.MON...NW wind 20 kt. Seas 9 ft.
.MON NIGHT...N wind 15 kt. Seas 8 ft.
.TUE THROUGH WED...NE wind 20 kt. Seas 7 ft.
.THU...W wind 20 kt. Seas 10 ft.

$$

PKZ179-201230-
Pribilof Islands Near Shore Waters-
350 PM AKDT Sat Sep 19 2020

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...S wind 15 kt becoming SE 25 kt after midnight. Seas 8 ft.
Rain.
.SUN...E wind 35 kt. Seas 12 ft. Rain.
.SUN NIGHT...NE wind 35 kt. Seas 14 ft. Rain.
.MON...N wind 35 kt. Seas 13 ft.
.MON NIGHT...N wind 25 kt. Seas 10 ft.
.TUE THROUGH WED...NW wind 25 kt. Seas 8 ft.
.THU...Variable wind 10 kt. Seas 6 ft.

$$

PKZ180-201230-
Kuskokwim Delta and Etolin Strait-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY AND SUNDAY NIGHT...

.TONIGHT...Variable wind 10 kt. Seas 3 ft.
.SUN...SE wind 20 kt becoming E 30 kt in the afternoon. Seas 6 ft.
.SUN NIGHT...E wind 30 kt. Seas 9 ft.
.MON...NE wind 30 kt. Seas 10 ft.
.MON NIGHT...N wind 25 kt. Seas 7 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 8 ft.
.THU...N wind 20 kt. Seas 6 ft.

$$

PKZ181-201230-
North and West of Nunivak Island-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY SUNDAY AND SUNDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming SE 20 kt after midnight S of
Nunivak Island. Seas 3 ft.
.SUN...E wind 25 kt. Seas 6 ft.
.SUN NIGHT...NE wind 25 kt. Seas 8 ft.
.MON AND MON NIGHT...N wind 25 kt. Seas 8 ft.
.TUE THROUGH WED...N wind 25 kt. Seas 7 ft.
.THU...N wind 20 kt. Seas 6 ft.

$$

PKZ185-201230-
Saint Matthew Island Waters-
350 PM AKDT Sat Sep 19 2020

...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT...

.TONIGHT...E wind 25 kt. Seas 6 ft. Rain.
.SUN...E wind 30 kt. Seas 11 ft.
.SUN NIGHT...NE wind 30 kt. Seas 11 ft.
.MON AND MON NIGHT...N wind 25 kt. Seas 8 ft.
.TUE THROUGH WED...NW wind 20 kt. Seas 6 ft.
.THU...N wind 15 kt. Seas 4 ft.

$$

633 
FZAK52 PAFC 201132
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
332 AM AKDT Sun Sep 20 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.

PKZ199-210045-
332 AM AKDT Sun Sep 20 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 979 mb low 200 nm southwest of Saint Paul this morning will 
move into the Gulf Monday afternoon. 

$$

PKZ150-210045-
South of the AK Peninsula Sitkinak to Castle Cape-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING TONIGHT...

.TODAY...SW wind 15 kt becoming S 25 kt in the afternoon. Seas 6 ft.
.TONIGHT...SE wind 35 kt. Seas 10 ft. Rain.
.MON...E wind 30 kt. Seas 11 ft.
.MON NIGHT...NE wind 35 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 12 ft.
.WED THROUGH THU...NW wind 25 kt. Seas 11 ft.

$$

PKZ155-210045-
South of the AK Peninsula Castle Cape to Cape Sarichef-
332 AM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...S wind 30 kt. From the Shumagin Islands E, S wind 20 kt
becoming SE 30 kt in the afternoon. Seas 9 ft. Rain.
.TONIGHT...S wind 20 kt becoming variable 10 kt after midnight. 
From the Shumagin Islands E, S wind 30 kt becoming variable 10 kt 
after midnight. Seas 13 ft. Rain.
.MON...N wind 15 kt. From the Shumagin Islands E, E wind 15 kt
becoming N 25 kt in the afternoon. Seas 14 ft.
.MON NIGHT...N wind 30 kt. Seas 13 ft.
.TUE...NW wind 35 kt. Seas 11 ft.
.WED THROUGH THU...NW wind 30 kt. Seas 11 ft.

$$

PKZ160-210045-
Bristol Bay-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING TONIGHT...

.TODAY...S wind 15 kt becoming SE 25 kt in the afternoon. Seas 2
ft building to 5 ft in the afternoon.
.TONIGHT...E wind 35 kt. Seas 8 ft. Rain.
.MON...NE wind 30 kt. Seas 8 ft.
.MON NIGHT...NE wind 25 kt. Seas 6 ft.
.TUE...N wind 30 kt. Seas 7 ft.
.WED...N wind 25 kt. Seas 7 ft.
.THU...NW wind 20 kt. Seas 5 ft.

$$

PKZ165-210045-
Port Heiden to Cape Sarichef-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING TODAY...

.TODAY...SE wind 35 kt except SE 30 kt from Port Moller E. Seas
7 ft. Rain.
.TONIGHT...SE wind 20 kt except E 30 kt from Port Moller E. Seas
8 ft. Rain.
.MON...NE wind 20 kt becoming N 30 kt in the afternoon. From Port
Moller E, NE wind 30 kt. Seas 11 ft.
.MON NIGHT...N wind 30 kt. Seas 12 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 12 ft.
.THU...NW wind 25 kt. Seas 8 ft.

$$

PKZ170-210045-
Cape Sarichef to Nikolski Bering Side-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING TODAY...

.TODAY...S wind 35 kt. Seas 12 ft. Rain.
.TONIGHT...SW wind 30 kt becoming N after midnight. From Unalaska E, 
S wind 20 kt in the evening becoming NE 10 kt. Seas 14 ft. Rain.
.MON...NW wind 30 kt. Seas 15 ft. Rain.
.MON NIGHT...NW wind 30 kt. Seas 14 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 12 ft.
.THU...NW wind 25 kt. Seas 7 ft.

$$

PKZ171-210045-
Unalaska Bay-
332 AM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY TODAY AND MONDAY...

.TODAY...S wind 30 kt diminishing to 20 kt in the afternoon. Seas
5 ft subsiding to 3 ft in the afternoon. Rain.
.TONIGHT...S wind 15 kt becoming NE after midnight. Seas 3 ft.
Rain.
.MON...NW wind 25 kt. Seas 10 ft. Rain.
.MON NIGHT...NW wind 30 kt. Seas 12 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.THU...NW wind 15 kt. Seas 3 ft.

$$

PKZ172-210045-
Cape Sarichef to Nikolski Pacific Side-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TODAY...SW wind 35 kt. Seas 16 ft. Rain.
.TONIGHT...SW wind 40 kt, From Unalaska E, W wind 25 kt in the 
evening diminishing to 15 kt. Seas 21 ft. Rain.
.MON...NW wind 35 kt, From Unalaska E, NW wind 20 kt. Seas 19 ft.
.MON NIGHT...NW wind 35 kt. Seas 13 ft.
.TUE...NW wind 35 kt. Seas 11 ft.
.WED...NW wind 30 kt. Seas 9 ft.
.THU...NW wind 25 kt. Seas 7 ft.

$$

PKZ173-210045-
Nikolski to Seguam Island Bering Side-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TODAY...SW wind 40 kt. Seas 17 ft. Rain.
.TONIGHT...W wind 40 kt. Seas 18 ft.
.MON...NW wind 35 kt. Seas 18 ft.
.MON NIGHT...NW wind 30 kt. Seas 12 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.THU...NW wind 15 kt. Seas 6 ft.

$$

PKZ174-210045-
Nikolski to Seguam Island Pacific Side-
332 AM AKDT Sun Sep 20 2020

...STORM WARNING TONIGHT...

.TODAY...W wind 45 kt. Seas 19 ft building to 25 ft in the
afternoon. Rain.
.TONIGHT...W wind 50 kt. Seas 28 ft.
.MON...NW wind 40 kt. Seas 22 ft.
.MON NIGHT...NW wind 30 kt. Seas 14 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.WED...NW wind 25 kt. Seas 8 ft.
.THU...SW wind 20 kt. Seas 8 ft.

$$

PKZ175-210045-
Seguam Island to Adak Bering Side-
332 AM AKDT Sun Sep 20 2020

...STORM WARNING TODAY...

.TODAY...W wind 40 kt increasing to 50 kt in the afternoon. Seas
22 ft. Rain.
.TONIGHT...W wind 45 kt. Seas 21 ft.
.MON...NW wind 35 kt diminishing to 25 kt in the afternoon. Seas 16 ft.
.MON NIGHT...NW wind 25 kt. Seas 11 ft.
.TUE...NW wind 25 kt. Seas 9 ft.
.WED...W wind 20 kt. Seas 7 ft.
.THU...NE wind 15 kt. Seas 6 ft.

$$

PKZ176-210045-
Seguam Island to Adak Pacific Side-
332 AM AKDT Sun Sep 20 2020

...STORM WARNING THROUGH TONIGHT...

.TODAY...W wind 50 kt. Seas 28 ft.
.TONIGHT...W wind 50 kt becoming NW 40 kt after midnight. Seas 28 ft.
.MON...NW wind 35 kt. Seas 16 ft.
.MON NIGHT...NW wind 30 kt. Seas 10 ft.
.TUE...NW wind 25 kt. Seas 8 ft.
.WED...W wind 20 kt. Seas 5 ft.
.THU...E wind 20 kt. Seas 8 ft.

$$

PKZ177-210045-
Adak to Kiska-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 45 kt. Seas 21 ft Bering side...27 ft Pacific side.
.TONIGHT...NW wind 40 kt diminishing to 30 kt after midnight. Seas 
19 ft subsiding to 14 ft after midnight.
.MON...NW wind 25 kt. Seas 11 ft.
.MON NIGHT...NW wind 20 kt. Seas 9 ft.
.TUE...N wind 15 kt. Seas 7 ft.
.WED...SE wind 15 kt. Seas 6 ft.
.THU...N wind 20 kt. Seas 9 ft.

$$

PKZ178-210045-
Kiska to Attu-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING TODAY...

.TODAY...NW wind 40 kt diminishing to 30 kt in the afternoon. Seas 
19 ft.
.TONIGHT...NW wind 25 kt diminishing to 15 kt after midnight. Seas 
12 ft.
.MON...NW wind 15 kt. Seas 9 ft.
.MON NIGHT...Variable wind 10 kt. Seas 7 ft.
.TUE...E wind 15 kt. Seas 6 ft.
.WED...SE wind 15 kt. Seas 7 ft.
.THU...NW wind 20 kt. Seas 10 ft.

$$

PKZ179-210045-
Pribilof Islands Near Shore Waters-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE wind 35 kt. Seas 11 ft. Rain.
.TONIGHT...NE wind 35 kt. Seas 14 ft. Rain.
.MON...N wind 30 kt. Seas 13 ft.
.MON NIGHT...N wind 25 kt. Seas 10 ft.
.TUE THROUGH WED...NW wind 25 kt. Seas 8 ft.
.THU...NW wind 15 kt. Seas 6 ft.

$$

PKZ180-210045-
Kuskokwim Delta and Etolin Strait-
332 AM AKDT Sun Sep 20 2020

...GALE WARNING TONIGHT...

.TODAY...SE wind 20 kt becoming E wind 30 kt in the afternoon. Seas 
8 ft.
.TONIGHT...E wind 35 kt. Seas 10 ft. Rain.
.MON...NE wind 30 kt. Seas 10 ft.
.MON NIGHT...N wind 25 kt. Seas 7 ft.
.TUE THROUGH WED...NW wind 30 kt. Seas 8 ft.
.THU...NW wind 25 kt. Seas 6 ft.

$$

PKZ181-210045-
North and West of Nunivak Island-
332 AM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...E wind 30 kt. Seas 7 ft.
.TONIGHT...NE wind 30 kt. Seas 8 ft.
.MON...NE wind 25 kt. Seas 8 ft.
.MON NIGHT...N wind 25 kt. Seas 7 ft.
.TUE THROUGH WED...NW wind 25 kt. Seas 7 ft.
.THU...N wind 20 kt. Seas 6 ft.

$$

PKZ185-210045-
Saint Matthew Island Waters-
332 AM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TODAY...E wind 30 kt. Seas 12 ft.
.TONIGHT...NE wind 30 kt. From Saint Matthew Island W, NE wind 30 kt
diminishing to 20 kt after midnight. Seas 12 ft.
.MON...N wind 25 kt. Seas 10 ft.
.MON NIGHT...N wind 20 kt. Seas 7 ft.
.TUE THROUGH WED...NW wind 20 kt. Seas 6 ft.
.THU...N wind 20 kt. Seas 5 ft.

$$

552 
FZAK52 PAFC 202316
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
316 PM AKDT Sun Sep 20 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.

PKZ199-211215-
316 PM AKDT Sun Sep 20 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 979 mb low at 55N 170W this afternoon will move into the Gulf 
Monday afternoon. 

$$

PKZ150-211215-
South of the AK Peninsula Sitkinak to Castle Cape-
316 PM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT...

.TONIGHT...SE wind 30 kt becoming S 15 kt W of Chirikof Island after
midnight. Seas 9 ft. Rain.
.MON...SE wind 30 kt, except variable 10 kt S of Chirikof Island. 
Seas 11 ft.
.MON NIGHT...NE wind 30 kt diminishing to 20 kt after midnight. S of
Chirikof Island, NE wind 15 kt. Seas 12 ft, subsiding to 8 ft near
the coast in the afternoon.
.TUE AND TUE NIGHT...N wind 35 kt. Seas 11 ft.
.WED...NW wind 30 kt. Seas 11 ft.
.THU...NW wind 25 kt. Seas 10 ft.
.FRI...NW wind 15 kt. Seas 8 ft.

$$

PKZ155-211215-
South of the AK Peninsula Castle Cape to Cape Sarichef-
316 PM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT...

.TONIGHT...S wind 25 kt diminishing to 15 kt after midnight. 
Seas 13 ft. Rain.
.MON...Variable wind 10 kt becoming N 20 kt in the afternoon. 
Seas 14 ft.
.MON NIGHT...N wind 25 kt. Seas 13 ft.
.TUE AND TUE NIGHT...NW wind 35 kt. Seas 12 ft.
.WED...NW wind 35 kt. Seas 11 ft.
.THU...NW wind 30 kt. Seas 10 ft.
.FRI...NW wind 15 kt. Seas 9 ft.

$$

PKZ160-211215-
Bristol Bay-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...E wind 35 kt. Seas 9 ft. Rain.
.MON...NE wind 35 kt diminishing to 25 kt in the afternoon. 
Seas 8 ft.
.MON NIGHT...NE wind 30 kt. Seas 7 ft.
.TUE...N wind 30 kt. Seas 7 ft.
.TUE NIGHT...N wind 25 kt. Seas 6 ft.
.WED...N wind 25 kt. Seas 6 ft.
.THU...NW wind 20 kt. Seas 5 ft.
.FRI...N wind 15 kt. Seas 3 ft.

$$

PKZ165-211215-
Port Heiden to Cape Sarichef-
316 PM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT...

.TONIGHT...S wind 15 kt in the evening becoming variable less 
than 10 kt. From Port Moller E, SE wind 30 kt. Seas 8 ft.
.MON...N wind 15 kt increasing to 25 kt in the afternoon. 
From Port Moller E, NE wind 30 kt. Seas 10 ft.
.MON NIGHT...N wind 25 kt. Seas 11 ft.
.TUE AND TUE NIGHT...NW wind 30 kt. Seas 11 ft.
.WED...NW wind 30 kt. Seas 10 ft.
.THU...NW wind 25 kt. Seas 8 ft.
.FRI...N wind 15 kt. Seas 7 ft.

$$

PKZ170-211215-
Cape Sarichef to Nikolski Bering Side-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING MONDAY AND MONDAY NIGHT...

.TONIGHT...SW wind 25 kt becoming N after midnight. From Dutch Harbor
E, SW wind 20 kt becoming N 15 kt after midnight. Seas 13 ft. Rain.
.MON...NW wind 35 kt. Seas 17 ft. Rain.
.MON NIGHT...NW wind 35 kt. Seas 16 ft. Rain.
.TUE...NW wind 30 kt. Seas 13 ft.
.TUE NIGHT...NW wind 25 kt. Seas 11 ft.
.WED THROUGH THU...NW wind 25 kt. Seas 9 ft.
.FRI...N wind 15 kt. Seas 8 ft.

$$

PKZ171-211215-
Unalaska Bay-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING MONDAY AND MONDAY NIGHT...

.TONIGHT...SW wind 10 kt becoming NW 15 kt after midnight. 
Seas 3 ft. Rain.
.MON...NW wind 20 kt increasing to 35 kt in the afternoon. 
Seas 7 ft building to 15 ft in the afternoon. Rain.
.MON NIGHT...NW wind 35 kt. Seas 15 ft. Rain.
.TUE...NW wind 30 kt. Seas 11 ft.
.TUE NIGHT...NW wind 25 kt. Seas 10 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.THU...NW wind 15 kt. Seas 3 ft.
.FRI...N wind 10 kt. Seas 3 ft.

$$

PKZ172-211215-
Cape Sarichef to Nikolski Pacific Side-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SW wind 35 kt. From Dutch Harbor E, SW wind 25 kt
becoming NW 15 kt after midnight. Seas 20 ft. Rain.
.MON...NW wind increasing to 40 kt. Seas 18 ft.
.MON NIGHT...NW wind 40 kt. Seas 15 ft. Rain.
.TUE...NW wind 35 kt. Seas 12 ft.
.TUE NIGHT...NW wind 30 kt. Seas 10 ft.
.WED...NW wind 30 kt. Seas 9 ft.
.THU...NW wind 25 kt. Seas 7 ft.
.FRI...N wind 15 kt. Seas 9 ft.

$$

PKZ173-211215-
Nikolski to Seguam Island Bering Side-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...NW wind 40 kt. Seas 17 ft.
.MON...NW wind 40 kt diminishing to 30 kt in the afternoon. 
Seas 18 ft.
.MON NIGHT...NW wind 30 kt. Seas 14 ft.
.TUE...NW wind 30 kt. Seas 12 ft.
.TUE NIGHT...NW wind 20 kt. Seas 9 ft.
.WED...NW wind 20 kt. Seas 8 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 7 ft.

$$

PKZ174-211215-
Nikolski to Seguam Island Pacific Side-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...W wind 45 kt. Seas 27 ft.
.MON...NW wind 45 kt diminishing to 35 kt in the afternoon. 
Seas 22 ft.
.MON NIGHT...NW wind 30 kt. Seas 14 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.TUE NIGHT...NW wind 25 kt. Seas 8 ft.
.WED...NW wind 20 kt. Seas 7 ft.
.THU...SW wind 20 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 10 ft.

$$

PKZ175-211215-
Seguam Island to Adak Bering Side-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 40 kt. Seas 19 ft.
.MON...NW wind 25 kt. Seas 15 ft.
.MON NIGHT...NW wind 20 kt. Seas 11 ft.
.TUE...NW wind 25 kt. Seas 9 ft.
.TUE NIGHT...NW wind 20 kt. Seas 8 ft.
.WED...NW wind 15 kt. Seas 6 ft.
.THU...NE wind 15 kt. Seas 6 ft.
.FRI...NW wind 20 kt. Seas 6 ft.

$$

PKZ176-211215-
Seguam Island to Adak Pacific Side-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...W wind 45 kt. Seas 27 ft.
.MON...NW wind 35 kt diminishing to 25 kt in the afternoon. Seas 16 
ft.
.MON NIGHT...NW wind 25 kt. Seas 9 ft.
.TUE...NW wind 25 kt. Seas 7 ft.
.TUE NIGHT...N wind 20 kt. Seas 6 ft.
.WED...N wind 15 kt. Seas 5 ft.
.THU...E wind 20 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 8 ft.

$$

PKZ177-211215-
Adak to Kiska-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 40 kt diminishing to 30 kt after midnight. 
Seas 18 ft subsiding to 13 ft after midnight.
.MON...NW wind 25 kt diminishing to 15 kt in the afternoon. 
Seas 11 ft.
.MON NIGHT...NW wind 15 kt. Seas 8 ft.
.TUE AND TUE NIGHT...NE wind 15 kt. Seas 6 ft.
.WED...E wind 15 kt. Seas 6 ft.
.THU...N wind 20 kt. Seas 9 ft.
.FRI...W wind 25 kt. Seas 7 ft.

$$

PKZ178-211215-
Kiska to Attu-
316 PM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TONIGHT...NW wind 25 kt diminishing to 15 kt after midnight. 
Seas 12 ft.
.MON...Variable wind 10 kt. Seas 8 ft.
.MON NIGHT...Variable wind 10 kt. Seas 7 ft.
.TUE AND TUE NIGHT...E wind 15 kt. Seas 6 ft.
.WED...E wind 15 kt. Seas 7 ft.
.THU...NW wind 20 kt. Seas 10 ft.
.FRI...W wind 25 kt. Seas 8 ft.

$$

PKZ179-211215-
Pribilof Islands Near Shore Waters-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...NE wind 35 kt. Seas 15 ft.
.MON...N wind 35 kt. Seas 14 ft.
.MON NIGHT...NW wind 30 kt. Seas 11 ft.
.TUE AND TUE NIGHT...NW wind 25 kt. Seas 9 ft.
.WED...NW wind 20 kt. Seas 7 ft.
.THU...NW wind 15 kt. Seas 6 ft.
.FRI...Variable wind 10 kt. Seas 7 ft.

$$

PKZ180-211215-
Kuskokwim Delta and Etolin Strait-
316 PM AKDT Sun Sep 20 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...E wind 35 kt. Seas 11 ft. Rain.
.MON...NE wind 35 kt diminishing to 25 kt in the afternoon. Seas
11 ft.
.MON NIGHT...NE wind 25 kt. Seas 7 ft.
.TUE AND TUE NIGHT...N wind 30 kt. Seas 8 ft.
.WED...N wind 30 kt. Seas 8 ft.
.THU...NW wind 25 kt. Seas 6 ft.
.FRI...N wind 15 kt. Seas 5 ft.

$$

PKZ181-211215-
North and West of Nunivak Island-
316 PM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT...

.TONIGHT...NE wind 25 kt. Seas 8 ft.
.MON...N wind 25 kt. Seas 8 ft.
.MON NIGHT...N wind 25 kt. Seas 8 ft.
.TUE AND TUE NIGHT...N wind 25 kt. Seas 7 ft.
.WED...N wind 25 kt. Seas 6 ft.
.THU THROUGH FRI...N wind 20 kt. Seas 6 ft.

$$

PKZ185-211215-
Saint Matthew Island Waters-
316 PM AKDT Sun Sep 20 2020

...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT...

.TONIGHT...NE wind 30 kt. Seas 12 ft.
.MON...N wind 30 kt E of Saint Matthew Island...N 20 kt W of Saint
Matthew Island. Seas 10 ft.
.MON NIGHT...N wind 25 kt. Seas 8 ft.
.TUE AND TUE NIGHT...NW wind 20 kt. Seas 6 ft.
.WED THROUGH THU...N wind 20 kt. Seas 5 ft.
.FRI...N wind 25 kt. Seas 6 ft.

$$

082 
FZAK52 PAFC 211143
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
343 AM AKDT Mon Sep 21 2020

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

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

PKZ199-220045-
343 AM AKDT Mon Sep 21 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 982 mb low 260 nm southeast of Cold Bay this morning will move 
into the North Pacific Tuesday morning. 

$$

PKZ150-220045-
South of the AK Peninsula Sitkinak to Castle Cape-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...SE wind 30 kt, except variable 10 kt S of Chirikof Island. 
Seas 11 ft.
.TONIGHT...NE wind 30 kt diminishing to 20 kt after midnight. S of
Chirikof Island, NE wind 15 kt. Seas 12 ft, subsiding to 8 ft near
the coast in the afternoon.
.TUE...N wind 30 kt, except N wind 15 kt SE of Chirikof Island. Seas
10 ft.
.TUE NIGHT...N wind 35 kt. Seas 12 ft.
.WED...NW wind 30 kt. Seas 11 ft.
.THU...NW wind 25 kt. Seas 10 ft.
.FRI...NW wind 15 kt. Seas 8 ft.

$$

PKZ155-220045-
South of the AK Peninsula Castle Cape to Cape Sarichef-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING TUESDAY...

.TODAY...Variable wind 10 kt becoming N 20 kt in the afternoon. 
Seas 14 ft.
.TONIGHT...N wind 30 kt, From the Shumagin Islands E, N wind 20 kt. 
Seas 13 ft.
.TUE...NW wind 35 kt. From the Shumagin Islands E, N wind 25 kt. 
Seas 11 ft.
.TUE NIGHT...NW wind 35 kt. Seas 12 ft.
.WED...NW wind 35 kt. Seas 11 ft.
.THU...NW wind 25 kt. Seas 10 ft.
.FRI...NW wind 20 kt. Seas 9 ft.

$$

PKZ160-220045-
Bristol Bay-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING TODAY...

.TODAY...NE wind 35 kt. Seas 8 ft.
.TONIGHT...NE wind 30 kt. Seas 7 ft.
.TUE...N wind 30 kt. Seas 7 ft.
.TUE NIGHT...N wind 25 kt. Seas 6 ft.
.WED THROUGH FRI...NW wind 20 kt. Seas 5 ft.

$$

PKZ165-220045-
Port Heiden to Cape Sarichef-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 20 kt increasing to 30 kt in the afternoon. From
Port Moller E, NE wind 30 kt. Seas 12 ft.
.TONIGHT...N wind 30 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 10 ft.
.TUE NIGHT...NW wind 30 kt. Seas 12 ft.
.WED...NW wind 30 kt. Seas 10 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 9 ft.

$$

PKZ170-220045-
Cape Sarichef to Nikolski Bering Side-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 16 ft. Rain.
.TONIGHT...NW wind 30 kt. Seas 15 ft. Rain.
.TUE...NW wind 30 kt. Seas 12 ft.
.TUE NIGHT...NW wind 25 kt. Seas 11 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.THU THROUGH FRI...N wind 20 kt. Seas 8 ft.

$$

PKZ171-220045-
Unalaska Bay-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...NW wind 25 kt increasing to 35 kt in the afternoon. Seas
8 ft building to 14 ft in the afternoon. Rain.
.TONIGHT...NW wind 35 kt. Seas 14 ft. Rain showers.
.TUE...NW wind 30 kt. Seas 11 ft. Rain showers.
.TUE NIGHT...NW wind 25 kt. Seas 10 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 3 ft.

$$

PKZ172-220045-
Cape Sarichef to Nikolski Pacific Side-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING THROUGH TUESDAY...

.TODAY...NW wind increasing to 40 kt. Seas 18 ft.
.TONIGHT...NW wind 40 kt. Seas 14 ft. Rain.
.TUE...NW wind 35 kt. Seas 12 ft.
.TUE NIGHT...NW wind 35 kt. Seas 10 ft.
.WED...NW wind 30 kt. Seas 8 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 8 ft.

$$

PKZ173-220045-
Nikolski to Seguam Island Bering Side-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 17 ft.
.TONIGHT...NW wind 30 kt. Seas 14 ft.
.TUE...NW wind 25 kt. Seas 11 ft.
.TUE NIGHT...NW wind 20 kt. Seas 9 ft.
.WED...NW wind 20 kt. Seas 8 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 7 ft.

$$

PKZ174-220045-
Nikolski to Seguam Island Pacific Side-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING TODAY...

.TODAY...NW wind 40 kt diminishing to 30 kt in the afternoon. Seas 
21 ft.
.TONIGHT...NW wind 30 kt. Seas 13 ft.
.TUE...NW wind 25 kt. Seas 10 ft.
.TUE NIGHT...NW wind 25 kt. Seas 8 ft.
.WED...N wind 20 kt. Seas 6 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 9 ft.

$$

PKZ175-220045-
Seguam Island to Adak Bering Side-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...NW wind 30 kt diminishing to 20 kt in the afternoon. Seas 
14 ft.
.TONIGHT...NW wind 20 kt. Seas 10 ft.
.TUE...NW wind 20 kt. Seas 9 ft.
.TUE NIGHT...N wind 15 kt. Seas 8 ft.
.WED...Variable wind 10 kt. Seas 6 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 6 ft.

$$

PKZ176-220045-
Seguam Island to Adak Pacific Side-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 30 kt. Seas 16 ft.
.TONIGHT...NW wind 25 kt. Seas 9 ft.
.TUE...NW wind 20 kt. Seas 7 ft.
.TUE NIGHT...N wind 20 kt. Seas 6 ft.
.WED...NE wind 15 kt. Seas 4 ft.
.THU...N wind 20 kt. Seas 8 ft.
.FRI...NW wind 20 kt. Seas 8 ft.

$$

PKZ177-220045-
Adak to Kiska-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 25 kt diminishing to 15 kt in the afternoon. Seas 
10 ft.
.TONIGHT...NW wind 15 kt. Seas 8 ft.
.TUE...NE wind 15 kt. Seas 6 ft.
.TUE NIGHT...E wind 15 kt. Seas 5 ft.
.WED...E wind 15 kt. Seas 5 ft.
.THU...N wind 20 kt. Seas 9 ft.
.FRI...NW wind 25 kt. Seas 7 ft.

$$

PKZ178-220045-
Kiska to Attu-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...Variable wind 10 kt. Seas 8 ft.
.TONIGHT...Variable wind 10 kt. Seas 7 ft.
.TUE...E wind 15 kt. Seas 6 ft.
.TUE NIGHT...E wind 15 kt. Seas 5 ft.
.WED...E wind 15 kt. Seas 6 ft.
.THU...NW wind 20 kt. Seas 10 ft.
.FRI...NW wind 25 kt. Seas 8 ft.

$$

PKZ179-220045-
Pribilof Islands Near Shore Waters-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 30 kt. Seas 14 ft.
.TONIGHT...NW wind 25 kt. Seas 11 ft.
.TUE...N wind 25 kt. Seas 9 ft.
.TUE NIGHT...NW wind 25 kt. Seas 8 ft.
.WED...NW wind 20 kt. Seas 6 ft.
.THU THROUGH FRI...N wind 15 kt. Seas 7 ft.

$$

PKZ180-220045-
Kuskokwim Delta and Etolin Strait-
343 AM AKDT Mon Sep 21 2020

...GALE WARNING TODAY...

.TODAY...NE wind 35 kt becoming N 25 kt in the afternoon. Seas
11 ft.
.TONIGHT...N wind 25 kt. Seas 7 ft.
.TUE...N wind 30 kt. Seas 8 ft.
.TUE NIGHT...N wind 30 kt. Seas 8 ft.
.WED...N wind 30 kt. Seas 8 ft.
.THU THROUGH FRI...N wind 20 kt. Seas 6 ft.

$$

PKZ181-220045-
North and West of Nunivak Island-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...N wind 25 kt. Seas 8 ft.
.TONIGHT...N wind 25 kt. Seas 7 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.TUE NIGHT...N wind 25 kt. Seas 7 ft.
.WED THROUGH FRI...NW wind 20 kt. Seas 6 ft.

$$

PKZ185-220045-
Saint Matthew Island Waters-
343 AM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY TODAY...

.TODAY...N wind 25 kt. Seas 9 ft.
.TONIGHT...N wind 20 kt. Seas 7 ft.
.TUE...NW wind 20 kt. Seas 6 ft.
.TUE NIGHT...NW wind 20 kt. Seas 5 ft.
.WED...N wind 15 kt. Seas 4 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 6 ft.

$$

517 
FZAK52 PAFC 212316
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
316 PM AKDT Mon Sep 21 2020

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

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

PKZ199-221230-
316 PM AKDT Mon Sep 21 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 983 mb low 160 nm east of Sand Point this afternoon will move 
into the North Pacific Tuesday morning. High pressure will persist 
over the Bering through Wednesday afternoon.

$$

PKZ150-221230-
South of the AK Peninsula Sitkinak to Castle Cape-
316 PM AKDT Mon Sep 21 2020

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...NE wind 35 kt, except 15 kt S of Chirikof Island. Seas 12
ft.
.TUE...N wind 35 kt. Seas 11 ft.
.TUE NIGHT...N wind 35 kt. Seas 11 ft.
.WED AND WED NIGHT...NW wind 25 kt. Seas 10 ft.
.THU...NW wind 25 kt. Seas 9 ft.
.FRI...NW wind 15 kt. Seas 8 ft.
.SAT...NW wind 20 kt. Seas 7 ft.

$$

PKZ155-221230-
South of the AK Peninsula Castle Cape to Cape Sarichef-
316 PM AKDT Mon Sep 21 2020

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

.TONIGHT...NW wind 30 kt. Seas 13 ft.
.TUE...NW wind 35 kt. Seas 11 ft.
.TUE NIGHT...NW wind 35 kt. Seas 11 ft.
.WED AND WED NIGHT...NW wind 30 kt. Seas 10 ft.
.THU...NW wind 25 kt. Seas 8 ft.
.FRI THROUGH SAT...NW wind 20 kt. Seas 8 ft.

$$

PKZ160-221230-
Bristol Bay-
316 PM AKDT Mon Sep 21 2020

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

.TONIGHT...NE wind 25 kt. Seas 6 ft.
.TUE...N wind 25 kt. Seas 6 ft.
.TUE NIGHT...N wind 25 kt. Seas 5 ft.
.WED...N wind 20 kt. Seas 5 ft.
.WED NIGHT...N wind 25 kt. Seas 5 ft.
.THU...NW wind 15 kt. Seas 5 ft.
.FRI THROUGH SAT...NW wind 20 kt. Seas 5 ft.

$$

PKZ165-221230-
Port Heiden to Cape Sarichef-
316 PM AKDT Mon Sep 21 2020

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

.TONIGHT...N wind 30 kt. Seas 12 ft.
.TUE...N wind 30 kt. Seas 10 ft.
.TUE NIGHT...NW wind 30 kt. Seas 11 ft.
.WED...NW wind 30 kt. Seas 10 ft.
.WED NIGHT...NW wind 25 kt. Seas 9 ft.
.THU THROUGH SAT...NW wind 20 kt. Seas 8 ft.

$$

PKZ170-221230-
Cape Sarichef to Nikolski Bering Side-
316 PM AKDT Mon Sep 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt. Seas 16 ft.
.TUE...NW wind 30 kt. Seas 12 ft.
.TUE NIGHT...NW wind 25 kt. Seas 11 ft.
.WED...NW wind 25 kt. Seas 9 ft.
.WED NIGHT...NW wind 20 kt. Seas 7 ft.
.THU...NW wind 15 kt. Seas 6 ft.
.FRI...N wind 20 kt. Seas 9 ft.
.SAT...NW wind 15 kt. Seas 9 ft.

$$

PKZ171-221230-
Unalaska Bay-
316 PM AKDT Mon Sep 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt. Seas 15 ft. Rain showers.
.TUE...NW wind 30 kt. Seas 11 ft. Rain showers.
.TUE NIGHT...NW wind 25 kt. Seas 10 ft.
.WED...NW wind 20 kt. Seas 7 ft.
.WED NIGHT...NW wind 15 kt. Seas 5 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 3 ft.
.SAT...NW wind 10 kt. Seas 3 ft.

$$

PKZ172-221230-
Cape Sarichef to Nikolski Pacific Side-
316 PM AKDT Mon Sep 21 2020

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...NW wind 40 kt. Seas 15 ft. Rain showers.
.TUE...NW wind 35 kt. Seas 12 ft.
.TUE NIGHT...NW wind 30 kt. Seas 9 ft.
.WED...NW wind 25 kt. Seas 7 ft.
.WED NIGHT...NW wind 20 kt. Seas 5 ft.
.THU THROUGH SAT...NW wind 20 kt. Seas 8 ft.

$$

PKZ173-221230-
Nikolski to Seguam Island Bering Side-
316 PM AKDT Mon Sep 21 2020

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

.TONIGHT...NW wind 30 kt. Seas 14 ft.
.TUE...NW wind 30 kt diminishing to 20 kt in the afternoon. Seas
12 ft.
.TUE NIGHT...NW wind 20 kt. Seas 8 ft.
.WED...N wind 15 kt. Seas 7 ft.
.WED NIGHT...Variable wind 10 kt. Seas 6 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 7 ft.
.SAT...Variable wind 10 kt. Seas 7 ft.

$$

PKZ174-221230-
Nikolski to Seguam Island Pacific Side-
316 PM AKDT Mon Sep 21 2020

...GALE WARNING TONIGHT...

.TONIGHT...NW wind 35 kt. Seas 14 ft.
.TUE...NW wind 30 kt. Seas 11 ft.
.TUE NIGHT...NW wind 20 kt. Seas 7 ft.
.WED...N wind 15 kt. Seas 5 ft.
.WED NIGHT...Variable wind 10 kt. Seas 4 ft.
.THU THROUGH SAT...NW wind 15 kt. Seas 8 ft.

$$

PKZ175-221230-
Seguam Island to Adak Bering Side-
316 PM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...NW wind 25 kt. Seas 11 ft.
.TUE...NW wind 20 kt. Seas 9 ft.
.TUE NIGHT...N wind 15 kt. Seas 7 ft.
.WED AND WED NIGHT...Variable wind 10 kt. Seas 5 ft.
.THU THROUGH FRI...NW wind 15 kt. Seas 6 ft.
.SAT...W wind 20 kt. Seas 8 ft.

$$

PKZ176-221230-
Seguam Island to Adak Pacific Side-
316 PM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 25 kt. Seas 9 ft.
.TUE...NW wind 20 kt. Seas 7 ft.
.TUE NIGHT...N wind 15 kt. Seas 5 ft.
.WED AND WED NIGHT...NE wind 15 kt. Seas 4 ft.
.THU THROUGH SAT...W wind 20 kt. Seas 7 ft.

$$

PKZ177-221230-
Adak to Kiska-
316 PM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...NW wind 15 kt. Seas 8 ft.
.TUE...E wind 15 kt. Seas 6 ft.
.TUE NIGHT...E wind 20 kt. Seas 6 ft.
.WED...E wind 20 kt. Seas 6 ft.
.WED NIGHT...E wind 15 kt. Seas 6 ft.
.THU...NW wind 20 kt. Seas 9 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas 8 ft.

$$

PKZ178-221230-
Kiska to Attu-
316 PM AKDT Mon Sep 21 2020

.TONIGHT...Variable wind 10 kt. Seas 7 ft.
.TUE...E wind 20 kt. Seas 6 ft.
.TUE NIGHT...SE wind 20 kt. Seas 7 ft.
.WED AND WED NIGHT...E wind 15 kt. Seas 7 ft.
.THU...NW wind 20 kt. Seas 10 ft.
.FRI THROUGH SAT...W wind 25 kt. Seas 8 ft.

$$

PKZ179-221230-
Pribilof Islands Near Shore Waters-
316 PM AKDT Mon Sep 21 2020

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

.TONIGHT...N wind 25 kt. Seas 11 ft.
.TUE...NW wind 25 kt. Seas 9 ft.
.TUE NIGHT...NW wind 25 kt. Seas 8 ft.
.WED...NW wind 20 kt. Seas 7 ft.
.WED NIGHT...NW wind 15 kt. Seas 5 ft.
.THU THROUGH FRI...N wind 15 kt. Seas 6 ft.
.SAT...Variable wind 10 kt. Seas 6 ft.

$$

PKZ180-221230-
Kuskokwim Delta and Etolin Strait-
316 PM AKDT Mon Sep 21 2020

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

.TONIGHT...N wind 25 kt. Seas 7 ft.
.TUE...N wind 30 kt. Seas 8 ft.
.TUE NIGHT...N wind 30 kt. Seas 8 ft.
.WED...N wind 30 kt. Seas 8 ft.
.WED NIGHT...N wind 25 kt. Seas 7 ft.
.THU...N wind 25 kt. Seas 6 ft.
.FRI THROUGH SAT...NW wind 20 kt. Seas 6 ft.

$$

PKZ181-221230-
North and West of Nunivak Island-
316 PM AKDT Mon Sep 21 2020

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

.TONIGHT...N wind 25 kt. Seas 8 ft.
.TUE...N wind 25 kt. Seas 7 ft.
.TUE NIGHT...N wind 25 kt. Seas 7 ft.
.WED...N wind 25 kt. Seas 6 ft.
.WED NIGHT...N wind 20 kt. Seas 5 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 5 ft.
.SAT...NW wind 15 kt. Seas 5 ft.

$$

PKZ185-221230-
Saint Matthew Island Waters-
316 PM AKDT Mon Sep 21 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...N wind 25 kt. Seas 8 ft.
.TUE...NW wind 20 kt. Seas 7 ft.
.TUE NIGHT...NW wind 15 kt. Seas 6 ft.
.WED AND WED NIGHT...NW wind 15 kt. Seas 4 ft.
.THU THROUGH FRI...NW wind 20 kt. Seas 6 ft.
.SAT...N wind 25 kt. Seas 9 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
502 AM AKDT Fri Sep 18 2020

.ANALYSIS AND UPPER LEVELS...

A large stacked low is continuing to work its way north into
Norton Sound and the Seward Peninsula this morning with a
weakening dry slot now approaching the AlCan border. Areas of
showers are working their way back into the the southwestern
mainland and Mat-Su Valleys behind the drier air that was potent
enough to temporarily clear out nearly all cloud cover over
Southcentral earlier on Thursday afternoon. The tap of tropical
moisture along and ahead of the low's front has now shifted to the
east over the AK Panhandle, and this will mark the end to the
heavier/steady precip that tracked through much of the area on
Thursday. Local effect winds are still going strong with up inlet
flow becoming solidly established. The gap winds through the Knik
and Turnagain Arms that were earlier gusting up to 60-70 mph in
mainly the far southeast Anchorage hillsides are gradually
beginning to decrease with the low pulling away and the pressure
gradient slowly relaxing.

A couple shortwaves are now moving along the Aleutians out west in
the broad cyclonic flow now in place around the low centered to
the north with limited impacts in the immediate term aside from a
few bands of lower clouds. Streaks of low clouds are also
drifting over much of the Bering around and south of the low
center. Overall, the most dominant impacts with the main system
appear to be well on the downswing this morning.

&&

.MODEL DISCUSSION...

Models are in good agreement that the low near the Seward
Peninsula will continue to weaken and drift northeast towards the
Beaufort Sea, though there are some subtle discrepancies with the
next couple shortwaves that will move from the Aleutians to the
AK Gulf Saturday to Sunday. Some models show a deformation band of
rain (with possible high elevation snow) develop along the
eastern Kenai Peninsula and western Chugach Mountains to the north
of a low that should be moving well into the Gulf by Sunday.
Determining precip placement and even precip type near mountain
peaks will be a potential forecast challenge for near the end of
the weekend. Additionally, another Western Bering low will come
into play from the west by Saturday that could produce gale to
storm force winds as it moves in.

&&

.AVIATION...

PANC...VFR conditions will mainly continue, though there could be
occasional MVFR conditions with passing showers until Friday
afternoon. LLWS around 20 kts may persist through midday Friday.
Gusty south to southeast winds will persist through the end of the
forecast period.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3: Today
through Sunday Night)...

Southcentral is on the southeast side of a large upper level low,
which formed following the passage of the strong low that caused
yesterday's winds. The low is directing southwesterly flow across
the area. This is allowing upslope flow to produce rain shower
activity from Anchorage east, as the winds run up against the
Chugach and Talkeetna Mountains. As this large-scale weather
scenario will be very slow to change, expect the best chances of
precipitation in areas near the mountains, especially in the Mat-
Su Valleys and the northern and eastern Prince William Sound. In
other areas, especially Anchorage and the Western Kenai
Peninsula, today will be a mostly dry day, though a stray shower
can't be ruled out. This will be mixed with a bit of sunshine as
well. Winds across the area persist this morning, but will
continue to gradually diminish through the day. This will remain
steady-state into Saturday morning.

Then on Saturday, a robust upper level trough will approach
Southcentral from the west, circulating around the upper low that
will be retreating to the Arctic coast. There is significant model
disagreement about how strong the upper level trough will be, and
how quickly it moves through the area. For the most part, the
models agree that the trough will be weakening as it moves across
the Cook Inlet region Saturday and Saturday night. Since the
trough will be negatively tilted, which supports the development
of precipitation, most of the models develop an area of
precipitation anywhere from Anchorage east to western Prince
William Sound Saturday evening through the overnight. That is
where the agreement ends. The westernmost models developing
precipitation over Anchorage would result in a period of cold rain
for the Bowl. The easternmost keep the band east of Girdwood. The
middle ground solution favored with this forecast package develops
the precipitation from the upper Hillside over Palmer, then up to
Hatcher Pass. Thus, lowered some of the precipitation chances for
the Bowl Saturday and Saturday night, while raising them along the
mountains. During the day, the precipitation will be all rain,
however, as slightly cooler air moves in overnight, snow levels
will drop to allow termination dust for higher elevation areas
from Glen Alps to Hatcher Pass. In Hatcher Pass, there is
potential for several inches of snow accumulation by Sunday
morning.

Shower activity will continue on Sunday across Prince
William Sound on through the Copper River Basin, while rain shower
activity continues in the mountains north and east of Anchorage.

&&

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

The low pressure system that brought the region widespread rain
yesterday is now over Norton Sound. This low will continue to
slowly drift northward over the next few days. As it continues to
meander near Nome while weakening the next few days, upper level
waves of energy will continue to rotate around the upper level
low through Southwest Alaska. This will keep the risk for rain
showers in the forecast each day of the forecast period. 850 mb
temperatures will slowly cool each day resulting in slightly
cooler morning temperatures for Saturday and Sunday morning.
Saturday morning low will drop into the mid 30s to near 40 degrees
in the Middle Kuskokwim Valley and Y-K Delta with mid to upper 40s
for the coastal regions. Sunday morning will be even cooler with
low to mid 30s across the inland areas and low 40s along the
coastal regions.

Breezy conditions will continue through today as the pressure
gradient remains in tact. This pressure gradient will begin to
lessen late today into this evening resulting in diminishing winds
across the area.

&&

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

A low pressure system continues to move quickly southeastward
across the southern Bering and the eastern Aleutian Chain bringing
a quick burst of rain to these areas as well as an area of small
crafts to the marine zones to the south of the Chain. This low
will be moving into the western Gulf by Saturday morning.

The next big weather maker will be a storm system that will be
developing off a 120-140 kt jet racing northward from the western
Pacific towards the western Aleutians. The warm front from this
system will begin to spread rain across the western Aleutian
Chain this afternoon and this evening with increasing winds. As
the baroclinicity strengthens, this storm will begin to rapidly
intensify overnight tonight into Saturday morning. The front end
of this system will mainly bring gale force winds to the region as
the air will be a little more stable resulting in less mixing of
the higher winds aloft to the surface. On the backside of the low,
storm force sustained winds and storm force gusts are expected for
the western to central Aleutian Chain beginning Saturday night and
continuing through the day Sunday. Cold air advection will take
over on the backside creating a more unstable atmospheric profile
resulting in the higher winds aloft being mixed down to the
surface. Widespread rain is expected for the western to central
Chain beginning late this afternoon through Saturday. This system
will continue moving eastward into the Bering Saturday night into
Sunday spreading rain to the Pribilofs and the eastern Aleutians
including Dutch Harbor. With the increasing winds, wave heights
will be on the rise Saturday afternoon into Sunday morning with
wave heights of 20-27 feet on the Pacific side of the Chain and
wave heights of 10-15 feet on the Bering side.

&&

.MARINE (Days 3 through 5: Sunday through Tuesday)...

A strong low entering the Bering Sea on Saturday seems to be
trending stronger with the newer model runs. Thus, expect gale
force winds will more widespread in nature across the Bering Sea
and Aleutians.Saturday night through Monday. There is also the
possibility of a brief period of storm force winds along the
Aleutian Chain as colder feeds into the back side of the
storm Saturday night into Sunday. By Tuesday the low crosses
over the Aleutians and moves into the Northeast Pacific/Gulf of
Alaska. There is disagreement on the track, but with the latest
models generally farther south, suspect the bulk of small
craft/gale force winds may be confined to the southern Gulf/Kodiak
Island.

&&

.LONG TERM FORECAST (Days 4 through 7: Monday through Thursday)...

A strong low in the vicinity of the Eastern Aleutians/Alaska
Peninsula on Monday will continue southeastward into the
Gulf/Northeast Pacific by Tuesday. Thus, rain and wind over
the central to eastern Bering will shift south and eastward to
Kodiak Island and the Gulf. Cold air advection behind the low
will maintain robust northerlies across the eastern Bering and
Southwest Alaska coastal waters all the way through Wednesday.
Much of Southwest and Southcentral look drier on the northern
periphery of the low Monday through Tuesday, with steady rain
likely confined to the Gulf coast. However, it may not be
completely dry over Southcentral, as most models indicate a
short-wave trough moving through sometime Monday.

The forecast for late next week looks potentially "winter-like".
Most models show a trough dropping out of the Arctic mid week,
though there is disagreement on how far south the trough will
make it. The GFS is most aggressive in driving cold air (down
to -10 degrees C at 850 mb) down across Southwest Alaska, then
potentially interacting with energy being pulled from the
Gulf/Northeast Pacific up to Southcentral. At a minimum, could
be a round of mountain snow. Stay tuned, as forecast confidence
is quite low at this point in time.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale Warning 177 178 411 413.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...AS
SOUTHCENTRAL ALASKA...JW
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MV
MARINE/LONG TERM...KM