Alert archive / Alaska / Heavy Freezing Spray Warnings in 2021

Heavy Freezing Spray Warning 87, NWS Anchorage, AK

February 28, 2021

NWS Anchorage, AK issued this heavy freezing spray warning at Feb 28, 2021, 3:39 AM AKST. It was in force for 36 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 28, 2021, 3:39 AM AKST (12:39 UTC)
Expired
Mar 1, 2021, 3:51 PM AKST
In force
36 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

082 
FZAK52 PAFC 281239
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
339 AM AKST Sun Feb 28 2021

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.

PKZ199-010145-
339 AM AKST Sun Feb 28 2021

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...A deepening 962 mb low 
130 nm northwest of Shemya moves across the central Bering to 100 nm 
east of Saint Paul Island at 975 mb by Tue morning. Its front moves 
across the Aleutians and Bering Sea into Southwest Alaska through Mon
morning. 

$$

PKZ150-010145-
South of the AK Peninsula Sitkinak to Castle Cape-
339 AM AKST Sun Feb 28 2021

...STORM WARNING TODAY...
...HEAVY FREEZING SPRAY WARNING MONDAY...

.TODAY...NW wind 50 kt. Seas 20 ft. Freezing spray.
.TONIGHT...SW wind 30 kt increasing to 40 kt after midnight. Seas
16 ft. Freezing spray. Rain and snow.
.MON...W wind 45 kt diminishing to 35 kt in the afternoon. Seas
21 ft. Heavy freezing spray. Snow showers and rain.
.MON NIGHT...W wind 35 kt. Seas 22 ft.
.TUE...W wind 40 kt. Seas 25 ft.
.WED...NW wind 35 kt. Seas 17 ft.
.THU...W wind 30 kt. Seas 10 ft.

$$

PKZ155-010145-
South of the AK Peninsula Castle Cape to Cape Sarichef-
339 AM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY...

.TODAY...W wind 30 kt. From the Shumagin Islands E, NW wind 40 kt
becoming W 30 kt in the afternoon. Seas 14 ft.
.TONIGHT...S wind 40 kt. Seas 21 ft. Rain and snow.
.MON...W wind 40 kt. Seas 27 ft. Snow showers.
.MON NIGHT...W wind 50 kt. Seas 32 ft.
.TUE...NW wind 45 kt. Seas 31 ft.
.WED...NW wind 40 kt. Seas 20 ft.
.THU...W wind 25 kt. Seas 12 ft.

$$

PKZ160-010145-
Bristol Bay-
339 AM AKST Sun Feb 28 2021

...GALE WARNING THROUGH TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY...

.TODAY...NW wind 35 kt diminishing to 25 kt in the afternoon. Seas
in ice free waters 11 ft subsiding to 7 ft in the afternoon. Heavy
freezing spray.
.TONIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas
in ice free waters 6 ft. Heavy freezing spray. Snow.
.MON...W wind 30 kt. Seas in ice free waters 10 ft. Heavy freezing
spray. Snow.
.MON NIGHT...SW wind 30 kt. Seas in ice free waters 12 ft.
.TUE...NW wind 35 kt. Seas in ice free waters 11 ft.
.WED...NW wind 30 kt. Seas in ice free waters 10 ft.
.THU...E wind 15 kt. Seas in ice free waters 4 ft.

$$

PKZ165-010145-
Port Heiden to Cape Sarichef-
339 AM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY...
...HEAVY FREEZING SPRAY WARNING MONDAY...

.TODAY...W wind 20 kt becoming SE 35 kt in the afternoon. From
Port Moller E, NW wind 30 kt becoming SW 20 kt in the afternoon. 
Seas 11 ft subsiding to 7 ft in the afternoon. Freezing spray.
.TONIGHT...W wind 40 kt. From Port Moller E, SE wind 30 kt
becoming SW after midnight. Seas 10 ft building to 16 ft after 
midnight. Freezing spray. Snow and widespread rain showers.
.MON...SW wind 40 kt. Seas 23 ft building to 31 ft in the afternoon. 
From Port Moller E, seas 20 ft. Heavy freezing spray. Snow showers.
.MON NIGHT...SW wind 50 kt. Seas 37 ft.
.TUE...NW wind 40 kt. Seas 31 ft.
.WED...NW wind 40 kt. Seas 21 ft.
.THU...SW wind 20 kt. Seas 18 ft.

$$

PKZ170-010145-
Cape Sarichef to Nikolski Bering Side-
339 AM AKST Sun Feb 28 2021

...STORM WARNING MONDAY...

.TODAY...S wind 45 kt. From Unalaska E, S wind 20 kt increasing to
40 kt in the afternoon. Seas 8 ft building to 14 ft in the afternoon. 
Widespread rain showers and snow.
.TONIGHT...SW wind 35 kt increasing to 45 kt after midnight. Seas
15 ft building to 23 ft after midnight. Snow showers and rain showers.
.MON...SW wind 50 kt. Seas 32 ft building to 40 ft in the
afternoon. Snow showers.
.MON NIGHT...W wind 55 kt. Seas 44 ft.
.TUE...NW wind 45 kt. Seas 33 ft.
.WED...NW wind 40 kt. Seas 23 ft.
.THU...SW wind 30 kt. Seas 19 ft.

$$

PKZ171-010145-
Unalaska Bay-
339 AM AKST Sun Feb 28 2021

...STORM WARNING MONDAY...

.TODAY...S wind 20 kt increasing to 30 kt in the afternoon. Seas
3 ft building to 5 ft in the afternoon. Rain with snow.
.TONIGHT...SW wind 35 kt. Seas 5 ft. Widespread rain and snow
showers. 
.MON...SW wind 35 kt increasing to 50 kt in the afternoon. Seas 5
ft building to 8 ft in the afternoon. Widespread snow showers.
.MON NIGHT...W wind 55 kt. Seas 9 ft.
.TUE...NW wind 45 kt. Seas 20 ft.
.WED...NW wind 30 kt. Seas 16 ft.
.THU...SW wind 25 kt. Seas 4 ft.

$$

PKZ172-010145-
Cape Sarichef to Nikolski Pacific Side-
339 AM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY...

.TODAY...SW wind 30 kt becoming S 40 kt in the afternoon. Seas 10
ft building to 17 ft in the afternoon. Rain.
.TONIGHT...SW wind 45 kt. Seas 24 ft. Snow showers and rain.
.MON...SW wind 45 kt. Seas 33 ft. Snow showers.
.MON NIGHT...W wind 50 kt. Seas 35 ft.
.TUE...NW wind 45 kt. Seas 29 ft.
.WED...NW wind 40 kt. Seas 18 ft.
.THU...SW wind 25 kt. Seas 14 ft.

$$

PKZ173-010145-
Nikolski to Seguam Island Bering Side-
339 AM AKST Sun Feb 28 2021

...STORM WARNING TONIGHT AND MONDAY...

.TODAY...S wind 45 kt. Seas 20 ft. Rain.
.TONIGHT...SW wind 50 kt. Seas 20 ft building to 29 ft after
midnight. Snow showers.
.MON...W wind 55 kt. Seas 43 ft. Snow showers.
.MON NIGHT...W wind 50 kt. Seas 43 ft.
.TUE...NW wind 40 kt. Seas 29 ft.
.WED THROUGH THU...W wind 30 kt. Seas 19 ft.

$$

PKZ174-010145-
Nikolski to Seguam Island Pacific Side-
339 AM AKST Sun Feb 28 2021

...STORM WARNING MONDAY...

.TODAY...S wind 30 kt increasing to 45 kt. Seas 21 ft. Widespread 
rain showers.
.TONIGHT...SW wind 45 kt. Seas 23 ft building to 32 ft after
midnight. Snow showers.
.MON...SW wind 50 kt. Seas 39 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 37 ft.
.TUE...NW wind 40 kt. Seas 30 ft.
.WED...W wind 35 kt. Seas 19 ft.
.THU...W wind 30 kt. Seas 16 ft.

$$

PKZ175-010145-
Seguam Island to Adak Bering Side-
339 AM AKST Sun Feb 28 2021

...STORM WARNING THROUGH MONDAY...

.TODAY...S wind 50 kt. Seas 20 ft. Widespread rain showers and
snow.
.TONIGHT...SW wind 55 kt. Seas 27 ft building to 38 ft after
midnight. Snow showers.
.MON...W wind 55 kt. Seas 42 ft. Snow showers.
.MON NIGHT...W wind 50 kt. Seas 37 ft.
.TUE...NW wind 40 kt. Seas 24 ft.
.WED...S wind 35 kt. Seas 14 ft.
.THU...W wind 35 kt. Seas 19 ft.

$$

PKZ176-010145-
Seguam Island to Adak Pacific Side-
339 AM AKST Sun Feb 28 2021

...STORM WARNING THROUGH MONDAY...

.TODAY...S wind 55 kt becoming SW 45 kt in the afternoon. Seas
26 ft. Rain.
.TONIGHT...SW wind 50 kt. Seas 32 ft building to 40 ft after
midnight. Snow showers.
.MON...W wind 50 kt. Seas 40 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 32 ft.
.TUE...NW wind 40 kt. Seas 25 ft.
.WED...S wind 30 kt. Seas 13 ft.
.THU...W wind 30 kt. Seas 15 ft.

$$

PKZ177-010145-
Adak to Kiska-
339 AM AKST Sun Feb 28 2021

...STORM WARNING THROUGH MONDAY...

.TODAY...SW wind 55 kt. Seas 34 ft. Snow showers and widespread
rain showers.
.TONIGHT...SW wind 60 kt. Seas 46 ft. Snow showers.
.MON...W wind 55 kt. Seas 42 ft subsiding to 35 ft in the
afternoon. Snow showers.
.MON NIGHT...W wind 40 kt. Seas 27 ft.
.TUE...W wind 40 kt. Seas 22 ft.
.WED...S wind 35 kt. Seas 16 ft.
.THU...SW wind 35 kt. Seas 19 ft.

$$

PKZ178-010145-
Kiska to Attu-
339 AM AKST Sun Feb 28 2021

...HURRICANE FORCE WIND WARNING THROUGH TONIGHT...

.TODAY...SW wind 65 kt. Bering side, seas 30 ft building to 38 ft
in the afternoon. Pacific side, seas 35 ft building to 46 ft in the 
afternoon. Snow showers.
.TONIGHT...W wind 65 kt. Seas 49 ft. Snow showers.
.MON...W wind 55 kt diminishing to 40 kt in the afternoon. Seas
37 ft subsiding to 27 ft in the afternoon. Snow showers.
.MON NIGHT...W wind 40 kt. Seas 24 ft.
.TUE...SW wind 35 kt. Seas 21 ft.
.WED THROUGH THU...SW wind 40 kt. Seas 26 ft.

$$

PKZ179-010145-
Pribilof Islands Near Shore Waters-
339 AM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY...

.TODAY...SE wind 30 kt increasing to 40 kt in the afternoon. Seas
7 ft building to 15 ft in the afternoon. Freezing spray.
Widespread snow showers.
.TONIGHT...SW wind 35 kt. Seas 17 ft building to 23 ft after
midnight. Snow showers.
.MON...SW wind 40 kt. Seas 34 ft. Snow showers.
.MON NIGHT...NW wind 40 kt. Seas 37 ft.
.TUE...NW wind 35 kt. Seas 23 ft.
.WED...NW wind 30 kt. Seas 16 ft.
.THU...SW wind 30 kt. Seas 17 ft.

$$

PKZ180-010145-
Kuskokwim Delta and Etolin Strait-
339 AM AKST Sun Feb 28 2021

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY...

.TODAY...N wind 25 kt becoming E in the afternoon. Seas in ice
free waters 7 ft. Heavy freezing spray.
.TONIGHT...E wind 40 kt becoming S 30 kt after midnight. Seas in
ice free waters 10 ft. Heavy freezing spray. Snow.
.MON...SW wind 30 kt. Seas in ice free waters 15 ft. Heavy
freezing spray. Snow.
.MON NIGHT...SW wind 30 kt. Seas in ice free waters 17 ft.
.TUE...NW wind 40 kt. Seas in ice free waters 15 ft.
.WED...NW wind 40 kt. Seas in ice free waters 11 ft.
.THU...SE wind 25 kt. Seas in ice free waters 8 ft.

$$

PKZ181-010145-
North and West of Nunivak Island-
339 AM AKST Sun Feb 28 2021

...GALE WARNING TONIGHT...

.TODAY...N wind 15 kt becoming E 30 kt in the afternoon.
.TONIGHT...E wind 40 kt diminishing to 30 kt after midnight.
Snow.
.MON...E wind 25 kt. Snow showers.
.MON NIGHT...N wind 30 kt.
.TUE...NW wind 35 kt.
.WED...N wind 30 kt.
.THU...SE wind 30 kt.

$$

PKZ185-010145-
Saint Matthew Island Waters-
339 AM AKST Sun Feb 28 2021

...STORM WARNING THROUGH TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY...

.TODAY...E of Saint Matthew Island, E wind 30 kt increasing to 45
kt in the afternoon. W of Saint Matthew Island, E wind 50 kt 
increasing to 60 kt in the afternoon. Seas in ice free waters 12 ft 
building to 24 ft in the afternoon. Heavy freezing spray. Snow.
.TONIGHT...E of Saint Matthew Island, E wind 50 kt diminishing to
30 kt after midnight. W of Saint Matthew Island, E wind 55 kt
diminishing to 45 kt after midnight. Seas in ice free waters 24
ft. Heavy freezing spray. Widespread snow showers.
.MON...E wind 30 kt E of Saint Matthew Island...NE 45 kt W of
Saint Matthew Island. Seas in ice free waters 28 ft. Heavy freezing 
spray. Snow showers.
.MON NIGHT...N wind 35 kt. Seas in ice free waters 21 ft.
.TUE...NW wind 30 kt. Seas in ice free waters 12 ft.
.WED...E wind 40 kt. Seas in ice free waters 20 ft.
.THU...S wind 35 kt. Seas in ice free waters 22 ft.

$$
3 follow-up statements
580 
FZAK52 PAFC 010058
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
358 PM AKST Sun Feb 28 2021

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.

PKZ199-011415-
358 PM AKST Sun Feb 28 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 942 mb low 250 nm North of Attu moves to 55 nm Southeast of 
Chignik at 980 mb for Tue afternoon. Its front moves across the 
Bering and Southwest Alaska into the Gulf of Alaska through Tue 
afternoon. Several troughs move over the Bering by Tue afternoon. 

$$

PKZ150-011415-
South of the AK Peninsula Sitkinak to Castle Cape-
358 PM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING MONDAY...

.TONIGHT...SW wind 30 kt increasing to 40 kt after midnight. Seas
11 ft building to 17 ft after midnight. Freezing spray. Snow.
.MON...W wind 40 kt. Seas 20 ft. Heavy freezing spray. Snow.
.MON NIGHT...W wind 35 kt. Seas 21 ft. Snow showers.
.TUE...W wind 35 kt. Seas 21 ft.
.TUE NIGHT...NW wind 35 kt. Seas 19 ft.
.WED...NW wind 35 kt. Seas 16 ft.
.THU THROUGH FRI...W wind 30 kt. Seas 10 ft.

$$

PKZ155-011415-
South of the AK Peninsula Castle Cape to Cape Sarichef-
358 PM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 21 ft. Rain and snow.
.MON...W wind 40 kt. Seas 26 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 29 ft. Snow showers.
.TUE...W wind 45 kt. Seas 26 ft.
.TUE NIGHT...NW wind 40 kt. Seas 24 ft.
.WED...NW wind 40 kt. Seas 19 ft.
.THU THROUGH FRI...W wind 25 kt. Seas 12 ft.

$$

PKZ160-011415-
Bristol Bay-
358 PM AKST Sun Feb 28 2021

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY...

.TONIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas
in ice free waters 6 ft. Heavy freezing spray. Snow.
.MON...W wind 30 kt. Seas in ice free waters 11 ft. Heavy freezing
spray. Snow.
.MON NIGHT...SW wind 30 kt. Seas in ice free waters 13 ft.
Freezing spray. Snow showers.
.TUE...N wind 20 kt. Seas in ice free waters 12 ft.
.TUE NIGHT...NW wind 30 kt. Seas in ice free waters 10 ft.
.WED...NW wind 30 kt. Seas in ice free waters 9 ft.
.THU...E wind 15 kt. Seas in ice free waters 4 ft.
.FRI...NW wind 20 kt. Seas in ice free waters 6 ft.

$$

PKZ165-011415-
Port Heiden to Cape Sarichef-
358 PM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING MONDAY...

.TONIGHT...S wind 40 kt except SE 30 kt from Port Moller E. Seas
11 ft building to 16 ft after midnight. Freezing spray. Snow.
.MON...SW wind 40 kt. Seas 25 ft building to 33 ft in the
afternoon. From Port Moller E, seas 22 ft. Heavy freezing spray. 
Snow showers.
.MON NIGHT...SW wind 45 kt except SW 40 kt from Port Moller E.
Seas 35 ft except 25 ft from Port Moller E. Freezing spray. Snow 
showers.
.TUE...NW wind 45 kt. Seas 32 ft.
.TUE NIGHT...NW wind 40 kt. Seas 24 ft.
.WED...NW wind 40 kt. Seas 20 ft.
.THU...SW wind 20 kt. Seas 18 ft.
.FRI...W wind 25 kt. Seas 18 ft.

$$

PKZ170-011415-
Cape Sarichef to Nikolski Bering Side-
358 PM AKST Sun Feb 28 2021

...STORM WARNING MONDAY AND MONDAY NIGHT...

.TONIGHT...SW wind 45 kt. Seas 16 ft building to 24 ft after
midnight. Snow showers and rain showers.
.MON...SW wind 50 kt. Seas 41 ft. Snow showers.
.MON NIGHT...W wind 50 kt. Seas 41 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 33 ft.
.TUE NIGHT...NW wind 40 kt. Seas 25 ft.
.WED...NW wind 40 kt. Seas 20 ft.
.THU THROUGH FRI...W wind 30 kt. Seas 19 ft.

$$

PKZ171-011415-
Unalaska Bay-
358 PM AKST Sun Feb 28 2021

...STORM WARNING MONDAY NIGHT...

.TONIGHT...SW wind 40 kt. Seas 6 ft. Widespread rain and snow
showers.
.MON...SW wind 35 kt becoming W 45 kt in the afternoon. Seas 7 ft.
Widespread snow showers.
.MON NIGHT...W wind 50 kt. Seas 8 ft. Widespread snow showers.
.TUE...NW wind 45 kt. Seas 24 ft.
.TUE NIGHT...NW wind 40 kt. Seas 20 ft.
.WED...NW wind 35 kt. Seas 16 ft.
.THU THROUGH FRI...W wind 25 kt. Seas 4 ft.

$$

PKZ172-011415-
Cape Sarichef to Nikolski Pacific Side-
358 PM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SW wind 45 kt. Seas 25 ft. Snow showers and rain.
.MON...SW wind 45 kt. Seas 33 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 33 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 26 ft.
.TUE NIGHT...NW wind 40 kt. Seas 22 ft.
.WED...NW wind 40 kt. Seas 17 ft.
.THU...SW wind 25 kt. Seas 14 ft.
.FRI...W wind 30 kt. Seas 14 ft.

$$

PKZ173-011415-
Nikolski to Seguam Island Bering Side-
358 PM AKST Sun Feb 28 2021

...STORM WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SW wind 50 kt. Seas 21 ft building to 31 ft after
midnight. Snow showers.
.MON...SW wind 50 kt. Seas 42 ft. Snow showers.
.MON NIGHT...W wind 50 kt. Seas 40 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 29 ft.
.TUE NIGHT...NW wind 35 kt. Seas 22 ft.
.WED THROUGH FRI...SW wind 30 kt. Seas 18 ft.

$$

PKZ174-011415-
Nikolski to Seguam Island Pacific Side-
358 PM AKST Sun Feb 28 2021

...STORM WARNING MONDAY...

.TONIGHT...SW wind 45 kt. Seas 25 ft building to 33 ft after
midnight. Snow showers.
.MON...SW wind 50 kt. Seas 38 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 35 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 29 ft.
.TUE NIGHT...NW wind 40 kt. Seas 23 ft.
.WED THROUGH FRI...W wind 30 kt. Seas 15 ft.

$$

PKZ175-011415-
Seguam Island to Adak Bering Side-
358 PM AKST Sun Feb 28 2021

...STORM WARNING THROUGH MONDAY...

.TONIGHT...SW wind 55 kt. Seas 28 ft building to 39 ft after
midnight. Snow showers.
.MON...W wind 55 kt. Seas 42 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 33 ft subsiding to 26 ft after
midnight. Snow showers.
.TUE...NW wind 40 kt. Seas 24 ft.
.TUE NIGHT...NW wind 30 kt. Seas 18 ft.
.WED...S wind 35 kt. Seas 12 ft.
.THU THROUGH FRI...SW wind 35 kt. Seas 20 ft.

$$

PKZ176-011415-
Seguam Island to Adak Pacific Side-
358 PM AKST Sun Feb 28 2021

...STORM WARNING THROUGH MONDAY...

.TONIGHT...SW wind 50 kt. Seas 38 ft. Snow showers.
.MON...W wind 50 kt. Seas 39 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 30 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 26 ft.
.TUE NIGHT...NW wind 30 kt. Seas 18 ft.
.WED...S wind 30 kt. Seas 12 ft.
.THU THROUGH FRI...SW wind 30 kt. Seas 14 ft.

$$

PKZ177-011415-
Adak to Kiska-
358 PM AKST Sun Feb 28 2021

...STORM WARNING THROUGH MONDAY...

.TONIGHT...SW wind 60 kt. Seas 44 ft. Snow showers.
.MON...W wind 55 kt diminishing to 45 kt in the afternoon. Seas
40 ft subsiding to 33 ft in the afternoon. Snow showers.
.MON NIGHT...W wind 40 kt. Seas 26 ft.
.TUE...NW wind 40 kt. Seas 22 ft.
.TUE NIGHT...SW wind 25 kt. Seas 15 ft.
.WED...S wind 40 kt. Seas 16 ft.
.THU THROUGH FRI...SW wind 35 kt. Seas 20 ft.

$$

PKZ178-011415-
Kiska to Attu-
358 PM AKST Sun Feb 28 2021

...HURRICANE FORCE WIND WARNING TONIGHT...

.TONIGHT...W wind 65 kt. Seas 46 ft. Snow showers.
.MON...W wind 50 kt diminishing to 40 kt in the afternoon. Seas
35 ft subsiding to 25 ft in the afternoon.
.MON NIGHT...W wind 40 kt. Seas 24 ft.
.TUE...W wind 30 kt. Seas 20 ft.
.TUE NIGHT...S wind 35 kt. Seas 13 ft.
.WED...S wind 45 kt. Seas 26 ft.
.THU THROUGH FRI...S wind 40 kt. Seas 25 ft.

$$

PKZ179-011415-
Pribilof Islands Near Shore Waters-
358 PM AKST Sun Feb 28 2021

...GALE WARNING THROUGH MONDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING MONDAY NIGHT...

.TONIGHT...SW wind 30 kt increasing to 40 kt after midnight. Seas
19 ft building to 26 ft after midnight. Snow showers.
.MON...SW wind 45 kt. Seas 38 ft. Snow showers.
.MON NIGHT...W wind 45 kt. Seas 35 ft. Heavy freezing spray. Snow
showers.
.TUE...NW wind 40 kt. Seas 25 ft.
.TUE NIGHT...NW wind 35 kt. Seas 18 ft.
.WED...NW wind 30 kt. Seas 13 ft.
.THU THROUGH FRI...SW wind 30 kt. Seas 19 ft.

$$

PKZ180-011415-
Kuskokwim Delta and Etolin Strait-
358 PM AKST Sun Feb 28 2021

...GALE WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY NIGHT...

.TONIGHT...SE wind 40 kt. Seas in ice free waters 10 ft. Heavy
freezing spray. Snow.
.MON...SW wind 30 kt. Seas in ice free waters 16 ft. Heavy
freezing spray. Snow.
.MON NIGHT...S wind 30 kt. Seas in ice free waters 17 ft. Heavy
freezing spray.
.TUE...NW wind 35 kt. Seas in ice free waters 15 ft.
.TUE NIGHT...NW wind 40 kt. Seas in ice free waters 12 ft.
.WED...NW wind 40 kt. Seas in ice free waters 11 ft.
.THU...SE wind 25 kt. Seas in ice free waters 7 ft.
.FRI...SW wind 20 kt. Seas in ice free waters 8 ft.

$$

PKZ181-011415-
North and West of Nunivak Island-
358 PM AKST Sun Feb 28 2021

...GALE WARNING TONIGHT...

.TONIGHT...E wind 40 kt diminishing to 30 kt after midnight.
Snow.
.MON...E wind 25 kt. Snow.
.MON NIGHT...NE wind 30 kt.
.TUE AND TUE NIGHT...NW wind 30 kt.
.WED...N wind 30 kt.
.THU...SE wind 30 kt.
.FRI...S wind 20 kt.

$$

PKZ185-011415-
Saint Matthew Island Waters-
358 PM AKST Sun Feb 28 2021

...STORM WARNING TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY NIGHT...

.TONIGHT...E of Saint Matthew Island, E wind 45 kt diminishing to
30 kt after midnight. W of Saint Matthew Island, E wind 55 kt
diminishing to 40 kt after midnight. Seas in ice free waters 25
ft. Heavy freezing spray. Widespread snow showers.
.MON...NE wind 35 kt E of Saint Matthew Island... NE 45 kt W of
Saint Matthew Island. Seas in ice free waters 29 ft. Heavy
freezing spray. Snow showers.
.MON NIGHT...N wind 40 kt. Seas in ice free waters 20 ft subsiding
to 15 ft after midnight. Heavy freezing spray.
.TUE AND TUE NIGHT...NW wind 30 kt. Seas in ice free waters 12 ft.
.WED...E wind 45 kt. Seas in ice free waters 20 ft.
.THU...S wind 35 kt. Seas in ice free waters 22 ft.
.FRI...SW wind 30 kt. Seas in ice free waters 22 ft.

$$
296 
FZAK52 PAFC 011229
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
329 AM AKST Mon Mar 1 2021

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.

PKZ199-020130-
329 AM AKST Mon Mar 1 2021

.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 959 mb complex low 180 nm southwest of Saint Matthew Island
moves to 90 nm west of Port Heiden at 975 mb by Tue morning, then
crosses the Alaska Peninsula into the North Pacific 330 nm 
southeast of Kodiak Island at 982 mb by early Wed morning. Its 
front moves across Southwest Alaska and the Gulf of Alaska through
Wed morning.

$$

PKZ150-020130-
South of the AK Peninsula Sitkinak to Castle Cape-
329 AM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...W wind 40 kt. Seas 20 ft. Heavy freezing spray. Snow and
rain.
.TONIGHT...W wind 35 kt. Seas 21 ft. Snow showers.
.TUE...W wind 35 kt. Seas 21 ft.
.TUE NIGHT...NW wind 30 kt. Seas 19 ft.
.WED...NW wind 35 kt. Seas 16 ft.
.THU...SW wind 30 kt. Seas 9 ft.
.FRI...W wind 30 kt. Seas 13 ft.

$$

PKZ155-020130-
South of the AK Peninsula Castle Cape to Cape Sarichef-
329 AM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...

.TODAY...W wind 40 kt. Seas 26 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 29 ft. Snow showers.
.TUE...W wind 45 kt except W 40 kt from the Shumagin Islands E.
Seas 26 ft. Snow showers.
.TUE NIGHT...NW wind 45 kt. Seas 24 ft.
.WED...NW wind 40 kt. Seas 19 ft.
.THU...W wind 30 kt. Seas 14 ft.
.FRI...W wind 35 kt. Seas 15 ft.

$$

PKZ160-020130-
Bristol Bay-
329 AM AKST Mon Mar 1 2021

...HEAVY FREEZING SPRAY WARNING TODAY...
...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TODAY...W wind 30 kt. Seas in ice free waters 11 ft. Heavy
freezing spray. Snow.
.TONIGHT...SW wind 30 kt. Seas in ice free waters 13 ft. Freezing
spray. Snow showers.
.TUE...E wind 20 kt becoming N in the afternoon. Seas in ice free
waters 12 ft.
.TUE NIGHT...NW wind 30 kt. Seas in ice free waters 10 ft.
.WED...N wind 30 kt. Seas in ice free waters 10 ft.
.THU...E wind 15 kt. Seas in ice free waters 7 ft.
.FRI...W wind 20 kt. Seas in ice free waters 8 ft.

$$

PKZ165-020130-
Port Heiden to Cape Sarichef-
329 AM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...SW wind 40 kt. Seas 25 ft building to 33 ft in the
afternoon. From Port Moller E, seas 22 ft. Heavy freezing spray.
Snow showers.
.TONIGHT...SW wind 45 kt except SW 40 kt from Port Moller E. Seas
35 ft except 25 ft from Port Moller E. Freezing spray. Snow
showers.
.TUE...W wind 45 kt. Seas 33 ft subsiding to 27 ft in the
afternoon.
From Port Moller E, seas 24 ft. Freezing spray. Snow showers.
.TUE NIGHT...NW wind 40 kt. Seas 24 ft.
.WED...NW wind 40 kt. Seas 21 ft.
.THU THROUGH FRI...W wind 30 kt. Seas 21 ft.

$$

PKZ170-020130-
Cape Sarichef to Nikolski Bering Side-
329 AM AKST Mon Mar 1 2021

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 50 kt. Seas 41 ft. Snow showers.
.TONIGHT...W wind 50 kt. Seas 41 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 33 ft. Snow showers.
.TUE NIGHT...NW wind 40 kt. Seas 25 ft.
.WED...NW wind 35 kt. Seas 21 ft.
.THU THROUGH FRI...SW wind 35 kt. Seas 26 ft.

$$

PKZ171-020130-
Unalaska Bay-
329 AM AKST Mon Mar 1 2021

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 35 kt becoming W 50 kt in the afternoon. Seas 5
ft building to 8 ft in the afternoon. Widespread snow showers.
.TONIGHT...W wind 50 kt. Seas 8 ft. Widespread snow showers.
.TUE...W wind 45 kt. Seas 24 ft. Widespread snow showers.
.TUE NIGHT...NW wind 40 kt. Seas 20 ft.
.WED...NW wind 35 kt. Seas 16 ft.
.THU THROUGH FRI...W wind 30 kt. Seas 5 ft.

$$

PKZ172-020130-
Cape Sarichef to Nikolski Pacific Side-
329 AM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...

.TODAY...SW wind 45 kt. Seas 33 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 33 ft. Snow showers.
.TUE...W wind 45 kt. Seas 26 ft. Snow showers.
.TUE NIGHT...NW wind 45 kt. Seas 22 ft.
.WED...NW wind 40 kt. Seas 17 ft.
.THU THROUGH FRI...W wind 35 kt. Seas 15 ft.

$$

PKZ173-020130-
Nikolski to Seguam Island Bering Side-
329 AM AKST Mon Mar 1 2021

...STORM WARNING THROUGH TONIGHT...

.TODAY...SW wind 50 kt. Seas 42 ft. Snow showers.
.TONIGHT...W wind 50 kt. Seas 40 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 29 ft. Snow showers.
.TUE NIGHT...NW wind 35 kt. Seas 22 ft.
.WED...SW wind 35 kt. Seas 16 ft.
.THU THROUGH FRI...SW wind 35 kt. Seas 26 ft.

$$

PKZ174-020130-
Nikolski to Seguam Island Pacific Side-
329 AM AKST Mon Mar 1 2021

...STORM WARNING TODAY...

.TODAY...SW wind 50 kt. Seas 38 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 35 ft. Snow showers.
.TUE...W wind 45 kt. Seas 29 ft. Snow showers.
.TUE NIGHT...NW wind 40 kt. Seas 23 ft.
.WED THROUGH FRI...SW wind 35 kt. Seas 18 ft.

$$

PKZ175-020130-
Seguam Island to Adak Bering Side-
329 AM AKST Mon Mar 1 2021

...STORM WARNING TODAY...

.TODAY...W wind 55 kt. Seas 42 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 33 ft subsiding to 26 ft after
midnight. Snow showers.
.TUE...NW wind 40 kt. Seas 24 ft.
.TUE NIGHT...NW wind 30 kt. Seas 18 ft.
.WED...SW wind 40 kt. Seas 16 ft.
.THU...SW wind 40 kt. Seas 25 ft.
.FRI...SW wind 35 kt. Seas 25 ft.

$$

PKZ176-020130-
Seguam Island to Adak Pacific Side-
329 AM AKST Mon Mar 1 2021

...STORM WARNING TODAY...

.TODAY...W wind 50 kt. Seas 39 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 30 ft. Snow showers.
.TUE...W wind 45 kt becoming NW 35 kt in the afternoon. 
Seas 26 ft.
.TUE NIGHT...NW wind 30 kt. Seas 18 ft.
.WED...SW wind 40 kt. Seas 15 ft.
.THU...W wind 30 kt. Seas 16 ft.
.FRI...SW wind 35 kt. Seas 16 ft.

$$

PKZ177-020130-
Adak to Kiska-
329 AM AKST Mon Mar 1 2021

...STORM WARNING TODAY...

.TODAY...W wind 55 kt diminishing to 45 kt in the afternoon. Seas
40 ft subsiding to 33 ft in the afternoon. Snow showers.
.TONIGHT...W wind 40 kt. Seas 26 ft.
.TUE...W wind 40 kt becoming NW 30 kt in the afternoon. 
Seas 22 ft.
.TUE NIGHT...SW wind 25 kt. Seas 15 ft.
.WED...SW wind 45 kt. Seas 21 ft.
.THU THROUGH FRI...SW wind 40 kt. Seas 23 ft.

$$

PKZ178-020130-
Kiska to Attu-
329 AM AKST Mon Mar 1 2021

...STORM WARNING TODAY...

.TODAY...W wind 50 kt diminishing to 40 kt in the afternoon. Seas
35 ft subsiding to 25 ft in the afternoon.
.TONIGHT...W wind 40 kt. Seas 24 ft.
.TUE...W wind 30 kt diminishing to 20 kt in the afternoon. 
Seas 20 ft.
.TUE NIGHT...S wind 40 kt. Seas 14 ft.
.WED...SW wind 50 kt. Seas 27 ft.
.THU...SW wind 40 kt. Seas 27 ft.
.FRI...S wind 45 kt. Seas 26 ft.

$$

PKZ179-020130-
Pribilof Islands Near Shore Waters-
329 AM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...
...HEAVY FREEZING SPRAY WARNING TONIGHT AND TUESDAY...

.TODAY...SW wind 45 kt. Seas 38 ft. Snow showers.
.TONIGHT...W wind 45 kt. Seas 35 ft. Heavy freezing spray. 
Snow showers.
.TUE...NW wind 40 kt. Seas 25 ft. Heavy freezing spray. 
Snow showers.
.TUE NIGHT...NW wind 35 kt. Seas 18 ft.
.WED...S wind 40 kt. Seas 13 ft.
.THU...SW wind 40 kt. Seas 25 ft.
.FRI...SW wind 30 kt. Seas 25 ft.

$$

PKZ180-020130-
Kuskokwim Delta and Etolin Strait-
329 AM AKST Mon Mar 1 2021

...GALE WARNING TUESDAY...
...HEAVY FREEZING SPRAY WARNING TODAY AND TUESDAY...

.TODAY...SW wind 30 kt. Seas in ice free waters 16 ft. Heavy
freezing spray. Snow.
.TONIGHT...S wind 30 kt. Seas in ice free waters 17 ft. Freezing
spray.
.TUE...NW wind 35 kt. Seas in ice free waters 15 ft. Heavy
freezing spray.
.TUE NIGHT...NW wind 40 kt. Seas in ice free waters 12 ft.
.WED...N wind 40 kt. Seas in ice free waters 11 ft.
.THU...S wind 30 kt. Seas in ice free waters 10 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 12 ft.

$$

PKZ181-020130-
North and West of Nunivak Island-
329 AM AKST Mon Mar 1 2021

...BRISK WIND ADVISORY THROUGH TUESDAY...

.TODAY...E wind 25 kt. Snow.
.TONIGHT...NE wind 30 kt.
.TUE...N wind 30 kt.
.TUE NIGHT...NW wind 30 kt.
.WED...N wind 35 kt.
.THU...S wind 35 kt.
.FRI...S wind 20 kt.

$$

PKZ185-020130-
Saint Matthew Island Waters-
329 AM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TONIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY...

.TODAY...NE wind 35 kt E of Saint Matthew Island...NE 45 kt W of 
Saint Matthew Island. Seas in ice free waters 29 ft. Heavy freezing 
spray. Snow showers.
.TONIGHT...N wind 40 kt. Seas in ice free waters 20 ft subsiding
to 15 ft after midnight. Heavy freezing spray.
.TUE...N wind 30 kt. Seas in ice free waters 13 ft. Heavy freezing
spray.
.TUE NIGHT...NW wind 30 kt. Seas in ice free waters 10 ft.
.WED...SE wind 50 kt. Seas in ice free waters 23 ft.
.THU...SW wind 45 kt. Seas in ice free waters 28 ft.
.FRI...SW wind 35 kt. Seas in ice free waters 28 ft.

$$
606 
FZAK52 PAFC 020051
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
351 PM AKST Mon Mar 1 2021

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.

PKZ199-021400-
351 PM AKST Mon Mar 1 2021
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 967 mb low 190 nm Southwest of Saint Matthew Island moves to 240 
nm South of Chignik at 985 mb Tue afternoon continuing into the 
North Pacific. Its front extends through Southwest Alaska into the
Gulf of Alaska and dissipating Wed afternoon. A Kamchatka front 
moves into the Western Aleutians and Bering by Wed afternoon.

$$

PKZ150-021400-
South of the AK Peninsula Sitkinak to Castle Cape-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...W wind 35 kt. Seas 21 ft. Snow showers.
.TUE...W wind 25 kt increasing to 35 kt in the afternoon. Seas
20 ft.
.TUE NIGHT...NW wind 30 kt. Seas 17 ft. Freezing spray.
.WED...NW wind 35 kt. Seas 16 ft.
.WED NIGHT...NW wind 30 kt. Seas 13 ft.
.THU...SW wind 30 kt. Seas 8 ft.
.FRI THROUGH SAT...W wind 30 kt. Seas 12 ft.

$$

PKZ155-021400-
South of the AK Peninsula Castle Cape to Cape Sarichef-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 28 ft. Snow showers.
.TUE...W wind 45 kt. From the Shumagin Islands E, W wind 30 kt
increasing to 40 kt in the afternoon. Seas 26 ft. Snow showers.
.TUE NIGHT...NW wind 45 kt. Seas 24 ft. Heavy freezing spray.
.WED...NW wind 40 kt. Seas 19 ft.
.WED NIGHT...NW wind 35 kt. Seas 13 ft.
.THU...W wind 30 kt. Seas 14 ft.
.FRI...W wind 35 kt. Seas 15 ft.
.SAT...W wind 30 kt. Seas 14 ft.

$$

PKZ160-021400-
Bristol Bay-
351 PM AKST Mon Mar 1 2021

...GALE WARNING TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas in ice free waters 13 ft. Freezing
spray. Snow showers.
.TUE...S wind 20 kt becoming NW in the afternoon. Seas in ice free
waters 10 ft.
.TUE NIGHT...NW wind 35 kt. Seas in ice free waters 10 ft. Heavy
freezing spray.
.WED...NW wind 30 kt. Seas in ice free waters 10 ft.
.WED NIGHT...N wind 20 kt. Seas in ice free waters 7 ft.
.THU...SE wind 20 kt. Seas in ice free waters 7 ft.
.FRI THROUGH SAT...SW wind 20 kt. Seas in ice free waters 7 ft.

$$

PKZ165-021400-
Port Heiden to Cape Sarichef-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY NIGHT...

.TONIGHT...SW wind 45 kt except SW 40 kt from Port Moller E. Seas
33 ft except 24 ft from Port Moller E. Freezing spray. Snow
showers.
.TUE...W wind 40 kt. From Port Moller E, W wind 30 kt becoming NW
40 kt in the afternoon. Seas 28 ft except 20 ft from Port Moller
E. Freezing spray. Snow showers.
.TUE NIGHT...NW wind 40 kt. Seas 24 ft. Heavy freezing spray. Snow
showers.
.WED...NW wind 40 kt. Seas 20 ft.
.WED NIGHT...NW wind 30 kt. Seas 13 ft.
.THU THROUGH SAT...SW wind 30 kt. Seas 21 ft.

$$

PKZ170-021400-
Cape Sarichef to Nikolski Bering Side-
351 PM AKST Mon Mar 1 2021

...STORM WARNING THROUGH TUESDAY...
...HEAVY FREEZING SPRAY WARNING TUESDAY NIGHT...

.TONIGHT...W wind 50 kt. Seas 39 ft. Snow showers.
.TUE...NW wind 50 kt diminishing to 40 kt in the afternoon. Seas
34 ft subsiding to 28 ft in the afternoon. Snow showers.
.TUE NIGHT...NW wind 40 kt. Seas 25 ft. Heavy freezing spray.
.WED...NW wind 35 kt. Seas 20 ft.
.WED NIGHT...SW wind 40 kt. Seas 11 ft.
.THU THROUGH SAT...SW wind 35 kt. Seas 24 ft.

$$

PKZ171-021400-
Unalaska Bay-
351 PM AKST Mon Mar 1 2021

...STORM WARNING TONIGHT...

.TONIGHT...W wind 50 kt. Gusts to 65 kt. Seas 8 ft. Widespread snow 
showers.
.TUE...W wind 45 kt. Seas 24 ft. Snow showers.
.TUE NIGHT...NW wind 40 kt. Seas 20 ft. Freezing spray. Snow
showers.
.WED...NW wind 35 kt. Seas 16 ft.
.WED NIGHT...SW wind 20 kt. Seas 5 ft.
.THU THROUGH SAT...SW wind 30 kt. Seas 5 ft.

$$

PKZ172-021400-
Cape Sarichef to Nikolski Pacific Side-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 32 ft. Snow showers.
.TUE...W wind 45 kt. Seas 29 ft. Snow showers.
.TUE NIGHT...NW wind 45 kt. Seas 22 ft. Freezing spray.
.WED...NW wind 40 kt. Seas 17 ft.
.WED NIGHT...W wind 30 kt. Seas 10 ft.
.THU THROUGH SAT...SW wind 35 kt. Seas 15 ft.

$$

PKZ173-021400-
Nikolski to Seguam Island Bering Side-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 38 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 32 ft.
.TUE NIGHT...NW wind 40 kt. Seas 23 ft. Freezing spray.
.WED...W wind 30 kt. Seas 16 ft.
.WED NIGHT...S wind 35 kt. Seas 14 ft.
.THU THROUGH SAT...SW wind 35 kt. Seas 24 ft.

$$

PKZ174-021400-
Nikolski to Seguam Island Pacific Side-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 35 ft. Snow showers.
.TUE...NW wind 45 kt. Seas 32 ft.
.TUE NIGHT...NW wind 40 kt. Seas 23 ft.
.WED...NW wind 30 kt. Seas 15 ft.
.WED NIGHT...SW wind 35 kt. Seas 14 ft.
.THU THROUGH FRI...SW wind 35 kt. Seas 18 ft.
.SAT...SW wind 30 kt. Seas 17 ft.

$$

PKZ175-021400-
Seguam Island to Adak Bering Side-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...W wind 45 kt. Seas 33 ft.
.TUE...NW wind 40 kt. Seas 26 ft.
.TUE NIGHT...NW wind 30 kt. Seas 18 ft.
.WED...SW wind 35 kt. Seas 11 ft.
.WED NIGHT...SW wind 40 kt. Seas 15 ft.
.THU THROUGH SAT...S wind 35 kt. Seas 23 ft.

$$

PKZ176-021400-
Seguam Island to Adak Pacific Side-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...W wind 45 kt. Seas 31 ft. Snow showers.
.TUE...NW wind 45 kt diminishing to 35 kt in the afternoon. Seas
26 ft.
.TUE NIGHT...NW wind 30 kt. Seas 18 ft.
.WED...SW wind 30 kt. Seas 10 ft.
.WED NIGHT...SW wind 40 kt. Seas 16 ft.
.THU...W wind 30 kt. Seas 16 ft.
.FRI...SW wind 35 kt. Seas 16 ft.
.SAT...S wind 30 kt. Seas 14 ft.

$$

PKZ177-021400-
Adak to Kiska-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...W wind 40 kt. Seas 28 ft.
.TUE...NW wind 40 kt diminishing to 30 kt in the afternoon. Seas
22 ft.
.TUE NIGHT...W wind 25 kt. Seas 15 ft.
.WED...S wind 45 kt. Seas 16 ft.
.WED NIGHT...W wind 45 kt. Seas 19 ft.
.THU...W wind 45 kt. Seas 24 ft.
.FRI THROUGH SAT...S wind 40 kt. Seas 20 ft.

$$

PKZ178-021400-
Kiska to Attu-
351 PM AKST Mon Mar 1 2021

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

.TONIGHT...W wind 40 kt. Seas 25 ft.
.TUE...W wind 30 kt diminishing to 20 kt in the afternoon. Seas
19 ft.
.TUE NIGHT...SW wind 25 kt becoming S 40 kt after midnight. Seas
14 ft.
.WED...S wind 50 kt. Seas 23 ft.
.WED NIGHT...W wind 40 kt. Seas 25 ft.
.THU THROUGH FRI...S wind 45 kt. Seas 28 ft.
.SAT...S wind 40 kt. Seas 21 ft.

$$

PKZ179-021400-
Pribilof Islands Near Shore Waters-
351 PM AKST Mon Mar 1 2021

...GALE WARNING THROUGH TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...W wind 45 kt. Seas 34 ft. Heavy freezing spray. Snow 
showers.
.TUE...NW wind 40 kt. Seas 23 ft. Heavy freezing spray. Snow 
showers.
.TUE NIGHT...NW wind 35 kt. Seas 18 ft. Heavy freezing spray.
.WED...NW wind 25 kt. Seas 12 ft.
.WED NIGHT...S wind 40 kt. Seas 15 ft.
.THU...W wind 35 kt. Seas 25 ft.
.FRI THROUGH SAT...SW wind 30 kt. Seas 23 ft.

$$

PKZ180-021400-
Kuskokwim Delta and Etolin Strait-
351 PM AKST Mon Mar 1 2021

...GALE WARNING TUESDAY AND TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...SW wind 30 kt. Seas in ice free waters 17 ft. Freezing
spray.
.TUE...NW wind 35 kt. Seas in ice free waters 13 ft. Heavy
freezing spray.
.TUE NIGHT...NW wind 40 kt. Seas in ice free waters 13 ft. Heavy
freezing spray.
.WED...NW wind 40 kt. Seas in ice free waters 11 ft.
.WED NIGHT...NE wind 30 kt. Seas in ice free waters 7 ft.
.THU...SW wind 30 kt. Seas in ice free waters 10 ft.
.FRI...SW wind 25 kt. Seas in ice free waters 12 ft.
.SAT...SW wind 30 kt. Seas in ice free waters 10 ft.

$$

PKZ181-021400-
North and West of Nunivak Island-
351 PM AKST Mon Mar 1 2021

...GALE WARNING TUESDAY...

.TONIGHT...NE wind 30 kt. Snow showers.
.TUE...N wind 35 kt.
.TUE NIGHT...NW wind 30 kt.
.WED...NW wind 25 kt.
.WED NIGHT...E wind 40 kt.
.THU...SW wind 40 kt.
.FRI...S wind 20 kt.
.SAT...S wind 25 kt.

$$

PKZ185-021400-
Saint Matthew Island Waters-
351 PM AKST Mon Mar 1 2021

...GALE WARNING TONIGHT AND TUESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...N wind 40 kt. Seas in ice free waters 18 ft. Heavy
freezing spray.
.TUE...N wind 30 kt. Seas in ice free waters 11 ft. Heavy freezing
spray.
.TUE NIGHT...E of Saint Matthew Island, NW wind 35 kt. W of Saint
Matthew Island, NW wind 30 kt becoming N 20 kt after midnight.
Seas in ice free waters 8 ft. Heavy freezing spray.
.WED...E wind 45 kt. Seas in ice free waters 13 ft.
.WED NIGHT...SE wind 50 kt. Seas in ice free waters 20 ft.
.THU...SW wind 40 kt. Seas in ice free waters 28 ft.
.FRI...SW wind 35 kt. Seas in ice free waters 28 ft.
.SAT...S wind 30 kt. Seas in ice free waters 26 ft.

$$

What forecasters said that day

The local office's own words before this heavy freezing spray warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before this heavy freezing spray warning went out at Feb 27, 5:30 PM AKST, 10 hours 9 minutes earlier.

Area forecast discussion, Feb 27, 5:30 PM AKST, 10 hours 9 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
530 PM AKST Sat Feb 27 2021

.ANALYSIS AND UPPER LEVELS...

Continuing to watch multiple areas. An upper level low and
deepening trough currently stretches southward across central and
south central Alaska. An upper level jet max extends from the
western Gulf northeastward. Where these interact, the surface low
is strengthening. This has brought an end to much of the precip
over south-central.

The next system to watch is the very strong low pressure system
moving into the western Aleutians and Bering.

&&

.MODEL DISCUSSION...

Models are in pretty good synoptic agreement through at least
Tuesday. The general easterly trend of the Gulf low and its
associated front will maintain strong westerlies over the Gulf and
intensified pressure gradients through the weekend, weakening by
Monday. The main impact from this pattern is winds elevating to
gales and storm force over Prince William Sound, Shelikof Strait
and Cook Inlet, while winds west of Barren Islands including
Kamishak Bay may reach hurricane force gusts by tonight and
Sunday.

The latest models runs are in better agreement now through the
middle of next week. The strong surface low approaching the
western Aleutians and Bering will move east across the Bering
through the beginning of the work week. This system is expected to
bring a wide swath of storm force winds and seas over 45 ft along
the Aleutian chain.

&&

.AVIATION...

PANC...IFR conditions will likely persist through this evening and
possibly into the overnight, before improving to MVFR later
tonight through the rest of the period.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3: Today
through Tuesday afternoon)...

An upper level low will strengthen over Kodiak Island this
evening. Rain will gradually taper off this evening as the
associated surface front tracks northward. Northwest winds will
rapidly increase behind the front. A High Wind Warning remains in
effect for Sunday morning. The strongest winds are expected to
remain south of Kodiak City.

The surface low has continued to trend slightly south and as
such, highest snow amounts have followed suit. The current track
leads to more westerly cross barrier flow across Southcentral
which will inhibit much precipitation from reaching the area. If
the track slightly shifts, minor accumulations are possible but
will likely remain under an inch across Anchorage and the
Matanuska Valley. Light snow will also continue across the Kenai
Peninsula through Sunday morning, leading to a couple inches. The
majority of the snowfall is expected over the Southern Copper
River Basin and a Winter Weather Advisory has been issued there
through Sunday evening. Travel may be difficult along the
Richardson Highway between Tonsina and Valdez with gusty winds
through Thompson Pass leading to reduced visibility in blowing
snow.

Snow will gradually taper off Sunday afternoon as an upper ridge
builds to the west, with offshore flow bringing much cooler
temperatures and clearing skies overnight Sunday into Monday
morning. A front associated with a deep low in the Bering will
quickly overspread the region Monday morning. An embedded upper
level shortwave will develop a surface low near Kodiak Island,
which looks to take a similar track as the current low. It is
difficult to determine at this point as to how the cross-barrier
component will affect the placement of the precipitation.
However, widespread light snow over much of Southcentral and the
Copper River Basin appears likely. This will gradually taper off
Monday night into Tuesday as the low departs to the east.

&&

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

An upper level trough in place over the Kuskokwim has brought
light snow showers to the area this afternoon. Additionally,
precipitation continues to diminish over the northern Alaska
Peninsula as the upper level wave moves east. Attention then
quickly shifts to an incoming front associated with a strong
Bering low. The front will arrive to the southwest coast by Sunday
night. Easterly winds will ramp up along the coastal locations of
Southwest in response to the front pushing onshore. Snow is
expected to arrive Sunday night across the area and will last
through Monday. With winds still elevated during this time,
a brief period of blowing snow conditions are possible, especially
along the coastal areas. A triple point along the front forms over
the Alaska Peninsula Monday morning, and will allow for continued
snowfall, especially along the foothills of the Alaska Range.
Additionally, westerly flow on the backside of the front will keep
snow showers in place across Southwest through Monday afternoon.
By Monday night, the parent low center will move into the eastern
Bering, keeping chances for snow in the forecast. Additionally,
gusty north to northwesterly winds are likely for the southern
Alaska Peninsula Tuesday.

&&

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

Cold northerly flow will persist across the eastern half of the
Bering. All attention then shifts to a strong low over the
western Bering that will progress eastward through the weekend and
into early next week. The leading front will pack stout southerly
winds, arriving over the Pribilofs by midday Sunday. A Winter
Weather Advisory for blowing snow has been issued for Saint Paul
and Saint George as high winds and snow will limit visibility to
one half mile at times on Sunday. This frontal passage will be
quick, and conditions are expected to improve Sunday evening with
more showery conditions likely.

As cold air wraps in behind the low, southwesterly to westerly
winds will follow, with hurricane force gusts likely across much
of the western Bering Sunday into Monday. As a result, a High Wind
Warning has been issued for the western Chain, including Shemya
for Sunday into Monday. Additionally, as this front pushes east,
gusty southerly winds will arrive over Adak, and a High Wind
Warning has been issued there as well for late Sunday through the
majority of Monday. Given some uncertainty with where this low
center will track, a High Wind Watch has been issued for the
central Aleutians, including Unalaska, where there is potential
for gusty westerly winds Monday into Tuesday. Additionally,
depending on the track of this low, there may be a brief period of
blizzard conditions across the Pribilofs Monday night into
Tuesday, as the low center may pass just to the east, keeping the
Pribilofs in gusty northerly flow. We will continue to monitor
the track of this low, as the wind fields could change.

By Tuesday, this low center will have weakened, and is expected
to be centered over the eastern Bering/Alaska Peninsula area. This
will allow a much colder airmass to fill in across the Bering,
with gusty northerly flow likely to remain through midweek.

&&

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

Bering: A well developed low and front tracks into Southwest
Alaska for Tue. Model confidence is good. Widespread high end gale
force winds and waves with areas of storm force winds over the
Eastern Bering, Aleutians and Alaska Peninsula, diminishing Thu.
Waves to 40 feet on the Bering side of the Eastern Aleutians and
Alaska Peninsula, subsiding. A new low and front moves across into
the Central Aleutians and Bering by Thu. Widespread high end gale
force winds with storm force gusts spread into the Central
Aleutians and Bering through Thu. Wave building to 25 feet over
the Western Bering by Thu.

Gulf of Alaska: A low exits the Southern Gulf Wed. Models vary,
but confidence is good. Widespread small craft winds and waves
with areas of gale force winds mostly south and west of Kodiak
Island. Waves 18 feet building to 22 feet for Wed. Outflow winds
from the Alaska Peninsula spread from the Shumagin Islands to the
Barren Islands into the Western Gulf. Widespread gale force winds
diminish to small craft winds for Thu.

&&

.LONG TERM FORECAST (Days 4 through 7: Wednesday through Saturday)...

The long term forecast period continues to look quieter overall
with most of the active weather remaining out over the Bering Sea
with an occasional front moving into Southwest for potential light snow.
The period from Wednesday through Saturday continues to suggest
(and there is great model agreement on this) that an upper level
Arctic/Siberian low will move southward through southern Alaska on
Wednesday as an upper level ridge builds in across the Bering
Sea. This upper level ridge is expected to move over Southwest
Alaska on Thursday bringing the potential for some light snow
though it seems with each new model run, these upper level
features are being shifted slightly westward. Potential exists
this front may never move onshore Southwest Thursday afternoon
into early Friday timeframe. The main thing to take away from the
pattern going forward during the forecast period above is colder
than normal temperatures for southern Alaska along with below
normal precipitation. Winds through gaps and passes appear to be
the main theme with the cold air expected to generally move from
a northwest to southeast orientation. This continues to not be the
ideal setup for very strong winds out of the gaps and passes
across Southcentral, except for possibly Whittier. Winds will be
on the uptick, however, during this timeframe but the extent as to
how strong they would get will be limited due to the way the cold
air will be pushing through. Another stronger front may try to
move into Southwest Alaska at the end of the forecast period
Friday night into Saturday bringing more snow to Southwest and
some slightly warmer temperatures, though, still remaining below
normal.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Weather Advisory 131 145 155 195.
	     High Wind Warning 171 187 191.
		 High Wind Watch 185.
MARINE...Hurricane Force Wind Warning 130 178.
	     Storm Warning 131 132 138 150 173 175-177 185 351 352
					   411-414.
		 Gale Warning 120 121 125 127 129 136 137 139 155 160 165
				      170-172 174 179-181.
		 Heavy Freezing Spray Warning 121 126 127 130 137-139 160
									  165 179 180 185.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...NR
SOUTHCENTRAL ALASKA...AP
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KO
MARINE/LONG TERM...MK/MV

The office that day

Everything else NWS Anchorage, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 27, 3:56 PM AKSTGale WarningAFC6 days
Feb 27, 3:56 PM AKSTStorm WarningAFC48 hr
Feb 27, 4:01 PM AKSTHeavy Freezing Spray WarningAFC12 hr
Feb 27, 4:07 PM AKSTWinter Weather AdvisoryAFC26 hr
Feb 27, 5:06 PM AKSTHigh Wind WatchAFC8 hr
Feb 27, 5:29 PM AKSTWinter Weather AdvisoryAFC28 hr
Feb 28, 3:39 AM AKSTStorm WarningAFC48 hr
Feb 28, 3:39 AM AKSTStorm WarningAFC60 hr
Feb 28, 11:07 AM AKSTHigh Wind WarningAFC3 hr
Feb 28, 2:53 PM AKSTGale WarningAFC36 hr
Feb 28, 2:53 PM AKSTGale WarningAFC4 days
Feb 28, 2:53 PM AKSTSmall Craft AdvisoryAFC48 hr

Nearby

Heavy Freezing Spray Warnings in Alaska, 2021Every heavy freezing spray warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.