Gale Warning 282, NWS Anchorage, AK

327 
FZAK52 PAFC 182335
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
335 PM AKDT Wed Mar 18 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.

PKZ199-191245-
335 PM AKDT Wed Mar 18 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 969 mb low 370 nm north of Attu moves into the Gulf of Anadyr 
Thursday morning while slowly dissipating. Southwesterly flow 
develops across the Bering Thursday morning and continues through 
Saturday afternoon. 

$$

PKZ150-191245-
South of the AK Peninsula Sitkinak to Castle Cape-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...SW wind 20 kt. Seas 5 ft.
.THU...SW wind 25 kt. Seas 7 ft.
.THU NIGHT...W wind 20 kt. Seas 10 ft.
.FRI...Variable wind 10 kt. Seas 9 ft.
.FRI NIGHT...SW wind 20 kt. Seas 8 ft.
.SAT THROUGH SUN...NW wind 25 kt. Seas 8 ft.
.MON...W wind 15 kt. Seas 9 ft.

$$

PKZ155-191245-
South of the AK Peninsula Castle Cape to Cape Sarichef-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...S wind 25 kt except S 20 kt from the Shumagin Islands
E. Seas 9 ft. Rain.
.THU...SW wind 25 kt. Seas 15 ft. Rain.
.THU NIGHT...W wind 15 kt. Seas 15 ft.
.FRI...S wind 15 kt. Seas 11 ft.
.FRI NIGHT...SW wind 20 kt. Seas 7 ft.
.SAT...NW wind 15 kt. Seas 7 ft.
.SUN...W wind 15 kt. Seas 11 ft.
.MON...S wind 15 kt. Seas 11 ft.

$$

PKZ160-191245-
Bristol Bay-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...SE wind 20 kt. Seas in ice free waters 1 foot. Snow and
rain.
.THU...S wind 25 kt. Seas in ice free waters 3 ft. Rain and snow.
.THU NIGHT...SW wind 25 kt. Seas in ice free waters 3 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 2 ft.
.FRI NIGHT...SW wind 15 kt. Seas in ice free waters 3 ft.
.SAT...W wind 20 kt. Seas in ice free waters 2 ft.
.SUN THROUGH MON...SW wind 10 kt. Seas in ice free waters 1 foot.

$$

PKZ165-191245-
Port Heiden to Cape Sarichef-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...S wind 30 kt. Seas 7 ft. Rain.
.THU...SW wind 25 kt. Seas 12 ft. Rain.
.THU NIGHT...SW wind 25 kt. Seas 13 ft.
.FRI AND FRI NIGHT...SW wind 20 kt. Seas 9 ft.
.SAT...NW wind 20 kt. Seas 7 ft.
.SUN THROUGH MON...SE wind 15 kt. Seas 6 ft.

$$

PKZ170-191245-
Cape Sarichef to Nikolski Bering Side-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...S wind 30 kt. Seas 12 ft.
.THU...SW wind 30 kt. Seas 15 ft.
.THU NIGHT...SW wind 25 kt. Seas 13 ft.
.FRI...S wind 20 kt. Seas 10 ft.
.FRI NIGHT...SW wind 20 kt. Seas 8 ft.
.SAT...SE wind 15 kt. Seas 6 ft.
.SUN THROUGH MON...SE wind 20 kt. Seas 9 ft.

$$

PKZ171-191245-
Unalaska Bay-
335 PM AKDT Wed Mar 18 2020

.TONIGHT...S wind 20 kt. Seas 3 ft. Rain.
.THU...SW wind 15 kt. Seas 2 ft.
.THU NIGHT...SW wind 15 kt. Seas 2 ft.
.FRI...S wind 15 kt. Seas 2 ft.
.FRI NIGHT...SW wind 10 kt. Seas 2 ft.
.SAT...Variable wind less than 10 kt. Seas 2 ft.
.SUN THROUGH MON...SE wind 15 kt. Seas 2 ft.

$$

PKZ172-191245-
Cape Sarichef to Nikolski Pacific Side-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...S wind 30 kt. Seas 17 ft. Rain.
.THU...SW wind 25 kt. Seas 19 ft.
.THU NIGHT...SW wind 20 kt. Seas 17 ft.
.FRI...S wind 15 kt. Seas 9 ft.
.FRI NIGHT...SW wind 20 kt. Seas 7 ft.
.SAT...NE wind 15 kt. Seas 9 ft.
.SUN...SE wind 25 kt. Seas 14 ft.
.MON...SE wind 20 kt. Seas 14 ft.

$$

PKZ173-191245-
Nikolski to Seguam Island Bering Side-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...SW wind 30 kt. Seas 15 ft.
.THU...SW wind 30 kt. Seas 15 ft.
.THU NIGHT...SW wind 25 kt. Seas 12 ft.
.FRI...S wind 20 kt. Seas 9 ft.
.FRI NIGHT...W wind 15 kt. Seas 7 ft.
.SAT...E wind 20 kt. Seas 7 ft.
.SUN...SE wind 25 kt. Seas 12 ft.
.MON...SE wind 20 kt. Seas 10 ft.

$$

PKZ174-191245-
Nikolski to Seguam Island Pacific Side-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...SW wind 30 kt. Seas 23 ft.
.THU...SW wind 25 kt. Seas 23 ft.
.THU NIGHT...SW wind 20 kt. Seas 17 ft subsiding to 12 ft after
midnight.
.FRI...S wind 15 kt. Seas 9 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 8 ft.
.SAT...E wind 20 kt. Seas 9 ft.
.SUN...E wind 25 kt. Seas 14 ft.
.MON...SE wind 20 kt. Seas 14 ft.

$$

PKZ175-191245-
Seguam Island to Adak Bering Side-
335 PM AKDT Wed Mar 18 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 40 kt. Seas 20 ft.
.THU...SW wind 30 kt. Seas 16 ft.
.THU NIGHT...S wind 25 kt. Seas 11 ft.
.FRI...SW wind 20 kt. Seas 9 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 6 ft.
.SAT...SE wind 20 kt. Seas 6 ft.
.SUN...SE wind 25 kt. Seas 11 ft.
.MON...SE wind 15 kt. Seas 7 ft.

$$

PKZ176-191245-
Seguam Island to Adak Pacific Side-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...SW wind 30 kt. Seas 29 ft.
.THU...SW wind 30 kt. Seas 23 ft.
.THU NIGHT...S wind 25 kt. Seas 15 ft.
.FRI...SW wind 15 kt. Seas 10 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 6 ft.
.SAT...E wind 25 kt. Seas 9 ft.
.SUN...E wind 30 kt. Seas 14 ft.
.MON...SE wind 15 kt. Seas 10 ft.

$$

PKZ177-191245-
Adak to Kiska-
335 PM AKDT Wed Mar 18 2020

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 40 kt. Seas 31 ft. Rain showers and snow
showers.
.THU...SW wind 30 kt. Seas 20 ft subsiding to 15 ft in the
afternoon.
.THU NIGHT...SW wind 25 kt. Seas 13 ft.
.FRI...SW wind 15 kt. Seas 9 ft.
.FRI NIGHT...SE wind 20 kt. Seas 8 ft.
.SAT...SE wind 20 kt. Seas 8 ft.
.SUN...E wind 25 kt. Seas 11 ft.
.MON...SE wind 20 kt. Seas 9 ft.

$$

PKZ178-191245-
Kiska to Attu-
335 PM AKDT Wed Mar 18 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...SW wind 40 kt. Seas 29 ft subsiding to 23 ft after
midnight.
.THU...SW wind 35 kt. Seas 18 ft.
.THU NIGHT...SW wind 25 kt. Seas 14 ft.
.FRI...SW wind 25 kt. Seas 10 ft.
.FRI NIGHT...S wind 35 kt. Seas 10 ft.
.SAT...S wind 35 kt. Seas 14 ft.
.SUN THROUGH MON...SE wind 20 kt. Seas 10 ft.

$$

PKZ179-191245-
Pribilof Islands Near Shore Waters-
335 PM AKDT Wed Mar 18 2020

...GALE WARNING THROUGH THURSDAY...

.TONIGHT...S wind 35 kt. Seas 20 ft.
.THU...SW wind 35 kt. Seas 20 ft.
.THU NIGHT...SW wind 30 kt. Seas 17 ft.
.FRI...SW wind 25 kt. Seas 12 ft.
.FRI NIGHT...SW wind 15 kt. Seas 11 ft.
.SAT THROUGH SUN...SE wind 15 kt. Seas 8 ft.
.MON...SE wind 20 kt. Seas 9 ft.

$$

PKZ180-191245-
Kuskokwim Delta and Etolin Strait-
335 PM AKDT Wed Mar 18 2020

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

.TONIGHT...S wind 30 kt. Seas in ice free waters 3 ft. Rain and
snow.
.THU...SW wind 30 kt. Seas in ice free waters 3 ft.
.THU NIGHT...SW wind 30 kt. Seas in ice free waters 4 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 2 ft.
.FRI NIGHT...SW wind 20 kt. Seas in ice free waters 2 ft.
.SAT...W wind 15 kt. Seas in ice free waters 2 ft.
.SUN THROUGH MON...S wind 15 kt. Seas in ice free waters 2 ft.

$$

PKZ181-191245-
North and West of Nunivak Island-
335 PM AKDT Wed Mar 18 2020

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...S wind 40 kt.
.THU...S wind 35 kt.
.THU NIGHT...SW wind 35 kt.
.FRI...SW wind 30 kt.
.FRI NIGHT...SW wind 20 kt.
.SAT THROUGH MON...S wind 20 kt.

$$

PKZ185-191245-
Saint Matthew Island Waters-
335 PM AKDT Wed Mar 18 2020

...GALE WARNING THROUGH THURSDAY NIGHT...

.TONIGHT...S wind 40 kt. Seas in ice free waters 25 ft. Snow
showers.
.THU...SW wind 40 kt. Seas in ice free waters 24 ft. Snow.
.THU NIGHT...SW wind 35 kt. Seas in ice free waters 20 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 15 ft.
.FRI NIGHT...SW wind 20 kt. Seas in ice free waters 10 ft.
.SAT THROUGH SUN...S wind 25 kt. Seas in ice free waters 11 ft.
.MON...S wind 20 kt. Seas in ice free waters 9 ft.

$$

362 
FZAK52 PAFC 191202
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
402 AM AKDT Thu Mar 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.

PKZ199-200115-
402 AM AKDT Thu Mar 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

High pressure builds over the eastern Bering and Aleutians through
late Fri night. A weak front moves over the northern Bering and
into Southwest Alaska by late Fri night.

$$

PKZ150-200115-
South of the AK Peninsula Sitkinak to Castle Cape-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 7 ft.
.TONIGHT...W wind 20 kt. Seas 10 ft.
.FRI...Variable wind 10 kt. Seas 9 ft.
.FRI NIGHT...SW wind 20 kt. Seas 8 ft.
.SAT THROUGH SUN...NW wind 35 kt. Seas 10 ft.
.MON...W wind 25 kt. Seas 7 ft.

$$

PKZ155-200115-
South of the AK Peninsula Castle Cape to Cape Sarichef-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 15 ft. Rain.
.TONIGHT...W wind 15 kt. Seas 15 ft.
.FRI...S wind 15 kt. Seas 11 ft.
.FRI NIGHT...SW wind 20 kt. Seas 7 ft.
.SAT...NW wind 25 kt. Seas 10 ft.
.SUN...N wind 20 kt. Seas 9 ft.
.MON...SE wind 25 kt. Seas 9 ft.

$$

PKZ160-200115-
Bristol Bay-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...S wind 25 kt. Seas in ice free waters 3 ft. Rain and
snow.
.TONIGHT...SW wind 25 kt. Seas in ice free waters 3 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 2 ft.
.FRI NIGHT...S wind 15 kt. Seas in ice free waters 3 ft.
.SAT...W wind 30 kt. Seas in ice free waters 4 ft.
.SUN...NW wind 25 kt. Seas in ice free waters 3 ft.
.MON...E wind 10 kt. Seas in ice free waters 1 foot.

$$

PKZ165-200115-
Port Heiden to Cape Sarichef-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 12 ft. Rain.
.TONIGHT...SW wind 25 kt. Seas 13 ft.
.FRI...S wind 20 kt. Seas 10 ft.
.FRI NIGHT...SW wind 20 kt. Seas 8 ft.
.SAT...NW wind 25 kt. Seas 7 ft.
.SUN...N wind 20 kt. Seas 6 ft.
.MON...SE wind 20 kt. Seas 5 ft.

$$

PKZ170-200115-
Cape Sarichef to Nikolski Bering Side-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 15 ft.
.TONIGHT...SW wind 25 kt. Seas 13 ft.
.FRI...S wind 20 kt. Seas 10 ft.
.FRI NIGHT...W wind 20 kt. Seas 8 ft.
.SAT...N wind 15 kt. Seas 6 ft.
.SUN...E wind 30 kt. Seas 7 ft.
.MON...SE wind 30 kt. Seas 7 ft.

$$

PKZ171-200115-
Unalaska Bay-
402 AM AKDT Thu Mar 19 2020

.TODAY...SW wind 15 kt. Seas 2 ft.
.TONIGHT...SW wind 15 kt. Seas 2 ft.
.FRI...S wind 15 kt. Seas 2 ft. Rain.
.FRI NIGHT...SW wind 10 kt. Seas 2 ft.
.SAT...N wind 10 kt. Seas 3 ft.
.SUN...E wind 15 kt. Seas 3 ft.
.MON...SE wind 20 kt. Seas 3 ft.

$$

PKZ172-200115-
Cape Sarichef to Nikolski Pacific Side-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 19 ft.
.TONIGHT...SW wind 20 kt. Seas 17 ft.
.FRI...S wind 15 kt. Seas 9 ft. Rain.
.FRI NIGHT...SW wind 20 kt. Seas 7 ft.
.SAT...N wind 25 kt. Seas 10 ft.
.SUN...E wind 30 kt. Seas 11 ft.
.MON...SE wind 30 kt. Seas 12 ft.

$$

PKZ173-200115-
Nikolski to Seguam Island Bering Side-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 15 ft.
.TONIGHT...SW wind 25 kt. Seas 12 ft.
.FRI...S wind 20 kt. Seas 9 ft.
.FRI NIGHT...NW wind 15 kt. Seas 7 ft.
.SAT...NE wind 20 kt. Seas 7 ft.
.SUN THROUGH MON...SE wind 30 kt. Seas 13 ft.

$$

PKZ174-200115-
Nikolski to Seguam Island Pacific Side-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 25 kt. Seas 23 ft.
.TONIGHT...SW wind 20 kt. Seas 17 ft subsiding to 12 ft after
midnight.
.FRI...SE wind 15 kt. Seas 9 ft. Rain.
.FRI NIGHT...N wind 15 kt. Seas 8 ft.
.SAT...NE wind 25 kt. Seas 11 ft.
.SUN...E wind 35 kt. Seas 15 ft.
.MON...SE wind 30 kt. Seas 15 ft.

$$

PKZ175-200115-
Seguam Island to Adak Bering Side-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 16 ft.
.TONIGHT...S wind 25 kt. Seas 11 ft.
.FRI...SW wind 20 kt in the morning becoming variable 10 kt. Seas
9 ft.
.FRI NIGHT...Variable wind 10 kt. Seas 6 ft.
.SAT...E wind 20 kt. Seas 5 ft.
.SUN THROUGH MON...E wind 30 kt. Seas 12 ft.

$$

PKZ176-200115-
Seguam Island to Adak Pacific Side-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 23 ft.
.TONIGHT...S wind 25 kt. Seas 15 ft.
.FRI...S wind 15 kt. Seas 10 ft.
.FRI NIGHT...NE wind 15 kt. Seas 7 ft.
.SAT...NE wind 25 kt. Seas 11 ft.
.SUN...NE wind 30 kt. Seas 15 ft.
.MON...SE wind 25 kt. Seas 14 ft.

$$

PKZ177-200115-
Adak to Kiska-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas 20 ft subsiding to 15 ft in the
afternoon.
.TONIGHT...SW wind 25 kt. Seas 13 ft.
.FRI...SW wind 15 kt. Seas 9 ft.
.FRI NIGHT...S wind 20 kt. Seas 8 ft.
.SAT...SE wind 25 kt. Seas 9 ft.
.SUN...NE wind 30 kt. Seas 12 ft.
.MON...E wind 20 kt. Seas 12 ft.

$$

PKZ178-200115-
Kiska to Attu-
402 AM AKDT Thu Mar 19 2020

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 18 ft.
.TONIGHT...SW wind 25 kt. Seas 14 ft.
.FRI...S wind 25 kt. Seas 10 ft.
.FRI NIGHT...S wind 30 kt. Seas 10 ft.
.SAT...SE wind 30 kt. Seas 13 ft.
.SUN...E wind 30 kt. Seas 12 ft.
.MON...NE wind 20 kt. Seas 9 ft.

$$

PKZ179-200115-
Pribilof Islands Near Shore Waters-
402 AM AKDT Thu Mar 19 2020

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 20 ft.
.TONIGHT...SW wind 30 kt. Seas 17 ft.
.FRI...SW wind 25 kt. Seas 12 ft.
.FRI NIGHT...W wind 15 kt. Seas 11 ft.
.SAT...Variable wind 10 kt. Seas 6 ft.
.SUN...SE wind 20 kt. Seas 7 ft.
.MON...SE wind 25 kt. Seas 8 ft.

$$

PKZ180-200115-
Kuskokwim Delta and Etolin Strait-
402 AM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TODAY...SW wind 30 kt. Seas in ice free waters 3 ft.
.TONIGHT...SW wind 30 kt. Seas in ice free waters 4 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 2 ft.
.FRI NIGHT...SW wind 20 kt. Seas in ice free waters 2 ft.
.SAT...W wind 25 kt. Seas in ice free waters 4 ft.
.SUN...W wind 20 kt. Seas in ice free waters 2 ft.
.MON...SE wind 20 kt. Seas in ice free waters 2 ft.

$$

PKZ181-200115-
North and West of Nunivak Island-
402 AM AKDT Thu Mar 19 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 35 kt.
.TONIGHT...SW wind 35 kt.
.FRI...SW wind 30 kt.
.FRI NIGHT...SW wind 20 kt.
.SAT...W wind 20 kt.
.SUN...S wind 20 kt.
.MON...S wind 25 kt.

$$

PKZ185-200115-
Saint Matthew Island Waters-
402 AM AKDT Thu Mar 19 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 40 kt. Seas in ice free waters 24 ft. Snow.
.TONIGHT...SW wind 35 kt. Seas in ice free waters 20 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 15 ft.
.FRI NIGHT...SW wind 20 kt. Seas in ice free waters 10 ft.
.SAT THROUGH SUN...S wind 30 kt. Seas in ice free waters 11 ft.
.MON...S wind 25 kt. Seas in ice free waters 9 ft.

$$

859 
FZAK52 PAFC 192256
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
256 PM AKDT Thu Mar 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.

PKZ199-201145-
256 PM AKDT Thu Mar 19 2020
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

High pressure build over the eastern Bering through Fri afternoon.
A front associated with a North Pacific low approaches the central
Aleutians Sat afternoon.

$$

PKZ150-201145-
South of the AK Peninsula Sitkinak to Castle Cape-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...W wind 20 kt becoming variable less than 10 kt after 
midnight. Seas 9 ft.
.FRI...Variable wind less than 10 kt becoming S 10 kt in the
afternoon. Seas 8 ft.
.FRI NIGHT...S wind 15 kt increasing to 25 kt after midnight. Seas
7 ft. Rain.
.SAT...W wind 30 kt. Seas 9 ft.
.SAT NIGHT...NW wind 35 kt. Seas 11 ft.
.SUN...NW wind 35 kt. Seas 10 ft.
.MON...W wind 25 kt. Seas 7 ft.
.TUE...SW wind 20 kt. Seas 7 ft.

$$

PKZ155-201145-
South of the AK Peninsula Castle Cape to Cape Sarichef-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...W wind 10 kt. Seas 14 ft.
.FRI...S wind increasing to 20 kt. Seas 11 ft. Rain.
.FRI NIGHT...S wind 20 kt. Seas 8 ft. Rain.
.SAT...NW wind 30 kt. Seas 8 ft.
.SAT NIGHT...N wind 25 kt. Seas 9 ft.
.SUN...N wind 15 kt. Seas 8 ft.
.MON...SE wind 25 kt. Seas 9 ft.
.TUE...SW wind 20 kt. Seas 9 ft.

$$

PKZ160-201145-
Bristol Bay-
256 PM AKDT Thu Mar 19 2020

.TONIGHT...SW wind 15 kt. Seas in ice free waters 2 ft.
.FRI...SW wind 15 kt becoming SE after midnight. Seas in ice free 
waters 2 ft.
.FRI NIGHT...S wind 20 kt. Seas in ice free waters 2 ft. Rain and
snow.
.SAT...W wind 30 kt. Seas in ice free waters 3 ft.
.SAT NIGHT...NW wind 25 kt. Seas in ice free waters 3 ft.
.SUN...NW wind 15 kt. Seas in ice free waters 1 foot.
.MON...E wind 10 kt. Seas in ice free waters 1 foot.
.TUE...W wind 10 kt. Seas in ice free waters 1 foot.

$$

PKZ165-201145-
Port Heiden to Cape Sarichef-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...SW wind 20 kt. Seas 12 ft.
.FRI...SE wind 20 kt. Seas 10 ft. Rain.
.FRI NIGHT...SE wind 20 kt becoming SW after midnight. Seas 8 ft. 
Rain and snow.
.SAT AND SAT NIGHT...N wind 25 kt. Seas 7 ft.
.SUN...NE wind 20 kt. Seas 4 ft.
.MON...SE wind 20 kt. Seas 5 ft.
.TUE...SW wind 15 kt. Seas 4 ft.

$$

PKZ170-201145-
Cape Sarichef to Nikolski Bering Side-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...SW wind 20 kt. Seas 13 ft.
.FRI...S wind 25 kt, except 20 kt W of Dutch Harbor. Seas 10 ft. 
Rain.
.FRI NIGHT...SW wind 20 kt becoming NW 15 kt after midnight. Seas 8 
ft.
.SAT...N wind 15 kt. Seas 6 ft.
.SAT NIGHT...NE wind 15 kt. Seas 5 ft.
.SUN THROUGH MON...SE wind 30 kt. Seas 7 ft.
.TUE...SW wind 15 kt. Seas 5 ft.

$$

PKZ171-201145-
Unalaska Bay-
256 PM AKDT Thu Mar 19 2020

.TONIGHT...Variable wind less than 10 kt becoming S 10 kt after
midnight. Seas 2 ft.
.FRI...SE wind 15 kt. Seas 2 ft. Rain.
.FRI NIGHT...S wind 15 kt becoming NW after midnight. Seas 2 ft
building to 5 ft after midnight. Rain.
.SAT...NW wind 15 kt. Seas 5 ft.
.SAT NIGHT...NE wind 10 kt. Seas 3 ft.
.SUN...E wind 15 kt. Seas 2 ft.
.MON...SE wind 20 kt. Seas 3 ft.
.TUE...SW wind 10 kt. Seas 2 ft.

$$

PKZ172-201145-
Cape Sarichef to Nikolski Pacific Side-
256 PM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...SW wind 15 kt. Seas 16 ft.
.FRI...SE wind 20 kt. Seas 11 ft. Rain.
.FRI NIGHT...S wind 20 kt becoming NW 15 kt after midnight. Seas 7 
ft. Rain.
.SAT...N wind 20 kt. Seas 10 ft.
.SAT NIGHT...NE wind 20 kt. Seas 10 ft.
.SUN THROUGH MON...SE wind 30 kt. Seas 12 ft.
.TUE...SW wind 20 kt. Seas 9 ft.

$$

PKZ173-201145-
Nikolski to Seguam Island Bering Side-
256 PM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...S wind 20 kt. Seas 11 ft.
.FRI...S wind 20 kt becoming variable 10 kt in the afternoon. Seas 8
ft. Rain showers.
.FRI NIGHT...NW wind 15 kt. Seas 7 ft.
.SAT...N wind 15 kt. Seas 7 ft.
.SAT NIGHT...E wind 25 kt. Seas 7 ft.
.SUN THROUGH MON...SE wind 30 kt. Seas 13 ft.
.TUE...SW wind 15 kt. Seas 7 ft.

$$

PKZ174-201145-
Nikolski to Seguam Island Pacific Side-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...SE wind 20 kt. Seas 16 ft.
.FRI...SE wind 20 kt. Seas 10 ft. Rain showers.
.FRI NIGHT...Variable wind 10 kt becoming N 20 kt after midnight. 
Seas 8 ft.
.SAT...NE wind 20 kt. Seas 10 ft.
.SAT NIGHT...E wind 30 kt. Seas 12 ft.
.SUN...E wind 35 kt. Seas 15 ft.
.MON...SE wind 30 kt. Seas 15 ft.
.TUE...SW wind 15 kt. Seas 9 ft.

$$

PKZ175-201145-
Seguam Island to Adak Bering Side-
256 PM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...S wind 25 kt. Seas 11 ft.
.FRI...SW wind 20 kt becoming NW 15 kt in the afternoon. Seas 8 ft.
.FRI NIGHT...NW wind 15 kt becoming variable less than 10 kt after
midnight. Seas 6 ft.
.SAT...E wind 15 kt. Seas 5 ft.
.SAT NIGHT...E wind 25 kt. Seas 6 ft.
.SUN THROUGH MON...E wind 30 kt. Seas 12 ft.
.TUE...SW wind 15 kt. Seas 5 ft.

$$

PKZ176-201145-
Seguam Island to Adak Pacific Side-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...S wind 20 kt. Seas 14 ft.
.FRI...Variable wind 10 kt becoming NW 15 kt in the afternoon. Seas 
9 ft.
.FRI NIGHT...NE wind 15 kt. Seas 8 ft.
.SAT...NE wind 20 kt. Seas 9 ft.
.SAT NIGHT...E wind 30 kt. Seas 13 ft.
.SUN...E wind 35 kt. Seas 17 ft.
.MON...SE wind 25 kt. Seas 14 ft.
.TUE...SW wind 15 kt. Seas 9 ft.

$$

PKZ177-201145-
Adak to Kiska-
256 PM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...S wind 30 kt. Seas 13 ft. Rain showers.
.FRI...W wind 15 kt. Seas 9 ft.
.FRI NIGHT...W wind 15 kt becoming S after midnight. Seas 7 ft.
.SAT...SE wind 20 kt. Seas 7 ft.
.SAT NIGHT...E wind 25 kt. Seas 10 ft.
.SUN...E wind 30 kt. Seas 13 ft.
.MON...E wind 20 kt. Seas 12 ft.
.TUE...S wind 20 kt. Seas 9 ft.

$$

PKZ178-201145-
Kiska to Attu-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...SW wind 25 kt. Seas 13 ft.
.FRI...SW wind 20 kt. Seas 9 ft.
.FRI NIGHT...S wind 30 kt. Seas 9 ft.
.SAT AND SAT NIGHT...SE wind 30 kt. Seas 12 ft.
.SUN...SE wind 25 kt. Seas 10 ft.
.MON...NE wind 20 kt. Seas 9 ft.
.TUE...SE wind 20 kt. Seas 8 ft.

$$

PKZ179-201145-
Pribilof Islands Near Shore Waters-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...SW wind 25 kt. Seas 17 ft.
.FRI...S wind 25 kt. Seas 12 ft.
.FRI NIGHT...W wind 20 kt. Seas 10 ft.
.SAT...W wind 20 kt. Seas 8 ft.
.SAT NIGHT...Variable wind 10 kt. Seas 7 ft.
.SUN...SE wind 20 kt. Seas 7 ft.
.MON...SE wind 25 kt. Seas 8 ft.
.TUE...Variable wind 10 kt. Seas 6 ft.

$$

PKZ180-201145-
Kuskokwim Delta and Etolin Strait-
256 PM AKDT Thu Mar 19 2020

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SW wind 25 kt. Seas in ice free waters 3 ft.
.FRI...S wind 20 kt. Seas in ice free waters 2 ft.
.FRI NIGHT...S wind 20 kt. Seas in ice free waters 2 ft. Snow.
.SAT...NW wind 25 kt. Seas in ice free waters 3 ft.
.SAT NIGHT...W wind 20 kt. Seas in ice free waters 2 ft.
.SUN...SW wind 15 kt. Seas in ice free waters 1 foot.
.MON...SE wind 20 kt. Seas in ice free waters 2 ft.
.TUE...SW wind 15 kt. Seas in ice free waters 1 foot.

$$

PKZ181-201145-
North and West of Nunivak Island-
256 PM AKDT Thu Mar 19 2020

...BRISK WIND ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...SW wind 30 kt.
.FRI...S wind 25 kt. Snow showers.
.FRI NIGHT...SW wind 25 kt becoming W 15 kt after midnight. Snow.
.SAT...W wind 20 kt.
.SAT NIGHT...SW wind 20 kt.
.SUN...SW wind 20 kt.
.MON...S wind 25 kt.
.TUE...Variable wind 10 kt.

$$

PKZ185-201145-
Saint Matthew Island Waters-
256 PM AKDT Thu Mar 19 2020

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

.TONIGHT...SW wind 35 kt diminishing to 25 kt after midnight. Seas 
in ice free waters 21 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 14 ft.
.FRI NIGHT...W wind 20 kt. Seas in ice free waters 10 ft. Heavy
freezing spray.
.SAT...SW wind 20 kt. Seas in ice free waters 7 ft.
.SAT NIGHT...S wind 25 kt. Seas in ice free waters 9 ft.
.SUN THROUGH MON...S wind 25 kt. Seas in ice free waters 10 ft.
.TUE...S wind 15 kt. Seas in ice free waters 6 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
312 PM AKDT Tue Mar 17 2020

.ANALYSIS AND UPPER LEVELS...
Two low pressure systems are our focus today. The first is a weak
low pressure system moving northeast up Cook Inlet. Surface
observations show the barrier jet and turnagain winds beginning to
set up as expected with this system. RADAR also shows
precipitation moving up the Cook Inlet. The backside of this low
is moving through southwest AK, with RADAR and satellite showing
precipitation coming to an end. This system is being supported in
the upper levels by a 500MB shortwave trough currently over
Southwest AK and diving southeast. It should be noted that this
trough has a push of colder air behind it, depicted well at the
850MB level. The other system is a large low pressure system
just moving into the western Bering Sea. Satellite shows it is a
mature and has a well wrapped occlusion. Its front is currently
pushing through the western Aleutians.

&&

.MODEL DISCUSSION...
Models are in good agreement through the short term forecast. As
mentioned in the previous discussion, there was a change in
driving cold air more southerly behind the passage of the low
currently working its way up the Cook Inlet. However, models all
agree on the change so we have adjusted the forecast. Since models
are agreeing even when trending towards new solutions, we have
high confidence in the forecast going forward.

&&

.AVIATION...
PANC...MVFR to IFR conditions in snow are expected into early
Wednesday morning, then should improve to VFR by late morning.
Light winds are expected.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
The upper level trough over southwest Alaska will continue to
track east. This should bring a shot of precipitation to
Southcentral Alaska as it moves east. The main upper low will
drop southeast from the Iliamna area across the Barren Islands to
the Gulf of Alaska overnight. The surface low forming in the base
of this upper trough will be near the southern Kenai Peninsula
this evening and track to the east and southeast overnight.
Conditions are expected to remain cold enough from the Susitna
Valley and Copper River Basin to support snow. South of these
areas enough warm air should move over the Kenai Peninsula and
Prince William Sound to result in a mix of rain and snow or all
rain. Colder air will flow back across the region tonight as the
upper trough moves southeast. An upper level ridge then builds
over the Bering Sea coast by Wednesday morning. How fast
conditions dry out is the concern. It is likely some snow showers
will persist into the early morning for the Cook Inlet to Susitna
Valley region. The Copper River Basin will be slower to dry, thus
we will hold on to snow showers through the morning, though these
should be scattered and have little accumulation.

The outflow returns Wednesday and we should see outflow wind in
the usual places of the Chugach Mountains, Whittier,
Valdez/Thompson Pass and the Copper River Delta. The wind is not
expected to be very strong, generally remaining below 30 mph.

The Ridge will slowly move across the southern mainland Wednesday
and be pushed east Thursday as another front moves into the
Bering Sea coast. As this front moves through, moisture returns
to the southern mainland along with snow or rain and snow likely.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3)...
A front is currently tracking across Southwest Alaska bringing
rain and snow to the Bristol Bay region and all snow to the
Kuskokwim Delta. As temperatures are near freezing, only minimal
accumulations are expected through the remainder of the afternoon.
A ridge will build in this evening in the wake of the front.
Thus, skies will clear overnight and winds will diminish, leading
to the potential of fog developing over much of the area into
Wednesday morning. Another front will move over Wednesday night
and light rain/snow is likely through Thursday.

A series of upper level shortwaves Thursday afternoon through
Friday morning will keep snow showers in the forecast for mainly
the areas of Bethel to Hooper Bay to Kipnuk. Weak upper level
ridging is expected to move into areas along the AKPEN and Bristol
Bay area keeping the area dry with the normal upslope regions of
the Alaska Range experiencing continued snowfall.

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3)...
A strong front is bringing gusty southwesterly winds and rain to
the western Aleutians. This will track west to east through
Wednesday, however as it will be relatively fast moving, impacts
should remain minimal. An upper level shortwave will move across
the Bering and Aleutian Chain Thursday afternoon through Friday
afternoon bringing a mix of rain and snow. An upper level ridge
will begin to move over the western Bering and western Aleutian
Chain Friday afternoon.

&&

.MARINE (Days 3 through 5 Fri through Sun)...
Due to a triple point low in the northern Gulf Friday, expect
gale force winds to occur through channels including Shelikof
Strait, the Barren Islands and through gaps and passes on the
Pacific side of the Alaska Peninsula through Saturday morning.
Following this, there are indications that another triple point
low will spin up. If this plays out, expect similar winds in the
aforementioned channels through Sunday.

A gale force front over the Bering will continue to push
northeastward before it exits the Bering Friday. There is
moderate confidence that another front will enter the western
Bering Friday night. Forecast challenges include timing and
strength. If the faster and stronger solution holds, gale force
winds will be possible in the western Bering through Sunday.

&&

.LONG TERM FORECAST (Days 3 through 7 Fri through Wed)...
On Friday, an upper level ridge looks to move across the Bering
and into southern Alaska. Similar to last week, warm temperatures
and moist conditions will advect into the Aleutians and the Bering
Sea following the backside of the ridge through Saturday. Behind
this, an upper level trough splits this upper level ridge with
another upstream. This looks to bring westerly flow to the
Southwest which will propagate precipitation into the region
through Sunday. This active weather pattern will continue through
the middle of the week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Storm Warning 177.
 Gale Warning 130>132 170 173>176 178 179 185.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...BB
SOUTHCENTRAL ALASKA...SA
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AP/MV
MARINE/LONG TERM...CK