Alert archive / Alaska / Storm Warnings in 2017

Storm Warning 162, NWS Anchorage, AK

December 20, 2017

NWS Anchorage, AK issued this storm warning at Dec 20, 2017, 3:30 AM AKST. It was in force for 48 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
Dec 20, 2017, 3:30 AM AKST (12:30 UTC)
Expired
Dec 22, 2017, 3:41 AM AKST
In force
48 hr
Issued by
NWS Anchorage, AK

The text

As transmitted.

802 
FZAK61 PAFC 201230
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
330 AM AKST Wed Dec 20 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

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.

PKZ399-210130-
330 AM AKST Wed Dec 20 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A front enters the western Gulf Thu morning then it moves into the 
northeastern Gulf Fri morning.

$$

PKZ351-210130-
Gulf of Alaska Offshore North of 57N and West of 144W-
330 AM AKST Wed Dec 20 2017

...GALE WARNING THURSDAY...

.TODAY...W wind 10 to 20 kt. Seas 5 to 9 ft.
.TONIGHT...NW wind up to 15 kt becoming NE after midnight. Seas 5
to 8 ft.
.THU...E wind 20 to 35 kt. Seas 6 to 10 ft.
.THU NIGHT...SE wind 30 to 45 kt. Seas 11 to 19 ft.
.FRI THROUGH SAT...SE wind 30 to 45 kt. Seas 16 to 28 ft.
.SUN...S wind up to 20 kt. Seas 12 to 20 ft.

$$

PKZ352-210130-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
330 AM AKST Wed Dec 20 2017

...STORM WARNING THURSDAY...

.TODAY...NW wind 10 to 15 kt. Seas 7 to 12 ft.
.TONIGHT...NE wind up to 20 kt becoming E 15 to 30 kt after
midnight. Seas 7 to 10 ft.
.THU...E wind 25 to 40 kt increasing to 35 to 50 kt in the
afternoon. Seas 8 to 12 ft building to 10 to 18 ft in the
afternoon.
.THU NIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft.
.FRI THROUGH SAT...SE wind 30 to 45 kt. Seas 18 to 27 ft.
.SUN...S wind up to 15 kt. Seas 10 to 18 ft.

$$
4 follow-up statements
622 
FZAK61 PAFC 202352
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
252 PM AKST Wed Dec 20 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

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.

PKZ399-211415-
252 PM AKST Wed Dec 20 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A strong front moves into the western Gulf Thu morning and moves 
east through Fri afternoon.

$$

PKZ351-211415-
Gulf of Alaska Offshore North of 57N and West of 144W-
252 PM AKST Wed Dec 20 2017

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...NW wind up to 15 kt becoming NE after midnight. Seas 5
to 8 ft.
.THU...E wind 20 to 35 kt. Seas 5 to 10 ft.
.THU NIGHT...SE wind 30 to 45 kt. Seas 8 to 16 ft building to 14
to 22 ft after midnight.
.FRI...SE wind 35 to 45 kt. Seas 17 to 26 ft.
.FRI NIGHT...SE wind 40 kt. Seas 22 to 26 ft.
.SAT...SE wind 25 to 40 kt. Seas 19 to 23 ft.
.SUN...S wind up to 20 kt. Seas 12 to 20 ft.
.MON...NE wind up to 10 kt. Seas 5 to 8 ft.

$$

PKZ352-211415-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
252 PM AKST Wed Dec 20 2017

...STORM WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...NE wind up to 20 kt becoming E 15 to 30 kt after
midnight. Seas 9 ft.
.THU...E wind 25 to 40 kt increasing to 35 to 50 kt in the
afternoon. Seas 9 to 17 ft.
.THU NIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft. Rain.
.FRI...SE wind 35 to 45 kt. Seas 22 to 28 ft.
.FRI NIGHT...SE wind 25 to 40 kt. Seas 20 to 25 ft.
.SAT...SE wind 25 to 40 kt. Seas 18 to 22 ft.
.SUN...S wind up to 15 kt. Seas 10 to 18 ft.
.MON...NE wind up to 15 kt. Seas 7 ft.

$$
239 
FZAK61 PAFC 211234
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
334 AM AKST Thu Dec 21 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

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.

PKZ399-220200-
334 AM AKST Thu Dec 21 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A front in the western Gulf will move into the northern Gulf Fri 
morning and stay nearly stationary through Sat morning. 

$$

PKZ351-220200-
Gulf of Alaska Offshore North of 57N and West of 144W-
334 AM AKST Thu Dec 21 2017

...GALE WARNING THROUGH FRIDAY...

.TODAY...E wind 10 to 25 kt increasing to 20 to 35 kt in the
afternoon. Seas 5 to 10 ft.
.TONIGHT...E wind 30 to 45 kt. Seas 8 to 16 ft building to 14 to
22 ft after midnight.
.FRI...SE wind 35 to 45 kt. Seas 17 to 26 ft.
.FRI NIGHT...SE wind 35 to 45 kt. Seas 22 to 26 ft.
.SAT...SE wind 25 to 40 kt. Seas 16 to 26 ft.
.SUN...S wind 15 to 25 kt. Seas 11 to 16 ft.
.MON...W wind up to 15 kt. Seas 5 to 8 ft.

$$

PKZ352-220200-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
334 AM AKST Thu Dec 21 2017

...STORM WARNING TONIGHT...

.TODAY...E wind 30 to 45 kt. Seas 9 to 17 ft.
.TONIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft. Rain.
.FRI...SE wind 35 to 45 kt. Seas 22 to 28 ft. Rain.
.FRI NIGHT...SE wind 30 to 45 kt. Seas 20 to 25 ft.
.SAT...S wind 20 to 35 kt. Seas 16 to 24 ft.
.SUN...SW wind 15 to 25 kt. Seas 11 to 19 ft.
.MON...SW wind up to 15 kt. Seas 4 to 8 ft.

$$
820 
FZAK61 PAFC 212351
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
251 PM AKST Thu Dec 21 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

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.

PKZ399-221400-
251 PM AKST Thu Dec 21 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 976 mb low at 50N 160W moves north into the eastern Bering
tonight. A front in the western Gulf will move into the northern 
Gulf Fri afternoon and stay nearly stationary through Sat 
afternoon. A 977 mb low at 48N 155W Fri afternoon moves to 54N 
157W at 985 mb Sat afternoon.

$$

PKZ351-221400-
Gulf of Alaska Offshore North of 57N and West of 144W-
251 PM AKST Thu Dec 21 2017

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...E wind 30 to 45 kt. Seas 10 to 18 ft.
.FRI...SE wind 35 to 45 kt. Seas 16 to 24 ft.
.FRI NIGHT...E wind 35 to 45 kt. Seas 18 to 23 ft.
.SAT...SE wind 25 to 40 kt. Seas 19 to 26 ft.
.SAT NIGHT...SE wind 20 to 35 kt. Seas 16 to 23 ft.
.SUN...S wind 15 to 25 kt. Seas 11 to 16 ft.
.MON THROUGH TUE...SW wind up to 15 kt. Seas 3 to 8 ft.

$$

PKZ352-221400-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
251 PM AKST Thu Dec 21 2017

...STORM WARNING TONIGHT...

.TONIGHT...SE wind 35 to 50 kt. Seas 15 to 29 ft. Rain.
.FRI...SE wind 35 to 45 kt. Seas 21 to 28 ft. Rain.
.FRI NIGHT...SE wind 45 kt diminishing to 30 to 40 kt after
midnight. Seas 22 to 25 ft. Rain.
.SAT...SE wind 25 to 40 kt. Seas 18 to 26 ft.
.SAT NIGHT...S wind 15 to 25 kt. Seas 16 to 19 ft.
.SUN...SW wind 25 kt. Seas 11 to 19 ft.
.MON THROUGH TUE...SE wind up to 15 kt. Seas 4 to 9 ft.

$$
718 
FZAK61 PAFC 221241
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
341 AM AKST Fri Dec 22 2017

Offshore waters forecast for the Gulf of Alaska West of 144W

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.

PKZ399-230145-
341 AM AKST Fri Dec 22 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A front enters the Western Gulf Sat afternoon and moves across 
the Gulf through Sun morning. A 990 mb low slides along the 
front to 55N 154W by Sun morning.

$$

PKZ351-230145-
Gulf of Alaska Offshore North of 57N and West of 144W-
341 AM AKST Fri Dec 22 2017

...GALE WARNING THROUGH SATURDAY...

.TODAY...SE wind 35 to 45 kt. Seas 15 to 25 ft.
.TONIGHT...E wind 35 to 45 kt. Seas 18 to 23 ft.
.SAT...E wind 30 to 45 kt. Seas 18 to 24 ft. Rain.
.SAT NIGHT...SE wind 20 to 35 kt. Seas 16 to 22 ft.
.SUN...S wind 15 to 25 kt. Seas 13 to 17 ft.
.MON...W wind up to 20 kt. Seas 8 to 13 ft.
.TUE...S wind up to 10 kt. Seas 3 to 5 ft.

$$

PKZ352-230145-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
341 AM AKST Fri Dec 22 2017

...GALE WARNING THROUGH SATURDAY...

.TODAY...SE wind 35 to 45 kt. Seas 21 to 29 ft. Rain.
.TONIGHT...SE wind 45 kt. Seas 21 to 25 ft. Rain.
.SAT...SE wind 30 to 45 kt diminishing to 20 to 35 kt 
in the afternoon. Seas 20 to 24 ft. Rain.
.SAT NIGHT...S wind 15 to 25 kt. Seas 15 to 20 ft.
.SUN...SW wind 15 to 30 kt. Seas 13 to 21 ft.
.MON...SW wind up to 20 kt. Seas 8 to 13 ft.
.TUE...SE wind up to 20 kt. Seas 4 to 9 ft.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 19, 3:32 PM AKSTGale WarningAFC60 hr
Dec 19, 3:38 PM AKSTHigh Wind WatchAFC37 hr
Dec 20, 3:30 AM AKSTGale WarningAFC4 days
Dec 20, 3:40 AM AKSTGale WarningAFC72 hr
Dec 20, 3:40 AM AKSTStorm WarningAFC48 hr
Dec 20, 3:53 AM AKSTStorm WarningAFC3 days
Dec 20, 2:52 PM AKSTGale WarningAFC61 hr
Dec 20, 2:52 PM AKSTSmall Craft AdvisoryAFC61 hr
Dec 20, 2:52 PM AKSTStorm WarningAFC61 hr

Nearby

Storm Warnings in Alaska, 2017Every storm warning in 2017

Sources

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