Gale Warning 25, NWS Anchorage, AK

568 
FZAK62 PAFC 270044
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
344 PM AKST Sun Jan 26 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-271400-
344 PM AKST Sun Jan 26 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 972 mb low at 49N 170E moves into the North Pacific at 1000 mb
by Tue afternoon. Its front over the Western Aleutians retreats
with the low through Tue afternoon. A ridge over the Central 
Bering moves to the Western Bering for Tue afternoon.

$$

PKZ411-271400-
Bering Sea Offshore West of 180 and East of the International
Dateline-
344 PM AKST Sun Jan 26 2020

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...E wind 30 to 40 kt. Seas 16 to 21 ft. Snow showers.
.MON...E wind 25 to 40 kt. Seas 13 to 21 ft. Snow showers.
.MON NIGHT...E wind 20 to 35 kt. Seas 10 to 18 ft.
.TUE...NE wind 10 to 25 kt. Seas 8 to 13 ft.
.TUE NIGHT...NW wind up to 20 kt. Seas 5 to 10 ft.
.WED...W wind 10 to 20 kt. Seas 4 to 8 ft.
.THU...SW wind 10 to 25 kt. Seas 4 to 9 ft.
.FRI...N wind up to 20 kt. Seas 5 to 10 ft.

$$

PKZ412-271400-
Bering Sea Offshore 171W to 180 and North of 56N-
344 PM AKST Sun Jan 26 2020

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 25 to 35 kt. Seas 9 to 14 ft. Freezing spray.
Snow showers.
.MON...NE wind 20 to 30 kt. Seas 8 to 13 ft. Freezing spray. Snow
showers.
.MON NIGHT...NE wind 15 to 30 kt. Seas 6 to 11 ft. Freezing spray.
.TUE...N wind 15 to 30 kt. Seas 6 to 10 ft.
.TUE NIGHT...N wind 15 to 30 kt. Seas 6 to 11 ft.
.WED...NW wind 15 to 30 kt. Seas 5 to 10 ft.
.THU THROUGH FRI...SW wind up to 20 kt. Seas 3 to 6 ft.

$$

PKZ413-271400-
Bering Sea Offshore 171W to 180 and South of 56N-
344 PM AKST Sun Jan 26 2020

...GALE WARNING THROUGH MONDAY NIGHT...

.TONIGHT...E wind 30 to 40 kt. Seas 13 to 19 ft. Freezing spray.
Snow showers.
.MON...NE wind 30 to 40 kt. Seas 13 to 19 ft. Freezing spray. Snow
showers.
.MON NIGHT...NE wind 20 to 35 kt. Seas 11 to 16 ft. Freezing
spray.
.TUE...N wind 20 to 30 kt. Seas 9 to 13 ft.
.TUE NIGHT...N wind 20 to 30 kt. Seas 9 to 14 ft.
.WED...NW wind 20 to 30 kt. Seas 8 to 13 ft.
.THU...W wind 10 to 20 kt. Seas 6 to 10 ft.
.FRI...S wind 15 to 25 kt. Seas 6 to 10 ft.

$$

PKZ414-271400-
Bering Sea Offshore East of 171W-
344 PM AKST Sun Jan 26 2020

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

.TONIGHT...N wind 30 kt. Seas 7 to 11 ft. Heavy freezing spray.
Snow showers.
.MON...N wind 35 kt. Seas 8 to 13 ft. Heavy freezing spray. 
Snow showers.
.MON NIGHT...N wind 25 to 35 kt. Seas 9 to 14 ft. 
Heavy freezing spray.
.TUE...N wind 35 kt. Seas 9 to 14 ft.
.TUE NIGHT...N wind 40 kt. Seas 10 to 18 ft.
.WED...NW wind 25 to 40 kt. Seas 10 to 18 ft.
.THU...NW wind 15 to 30 kt. Seas 5 to 10 ft.
.FRI...SW wind 10 to 25 kt. Seas 3 to 6 ft.

$$

077 
FZAK62 PAFC 271208
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
308 AM AKST Mon Jan 27 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-280400-
308 AM AKST Mon Jan 27 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 978 mb low at 49N 167E moves into the North Pacific at 1000 mb 
by Tue afternoon. Its front over the Western Aleutians retreats 
with the low through Tue afternoon. A ridge over the Central 
Bering moves to the Western Bering for Tue afternoon.

$$

PKZ411-280400-
Bering Sea Offshore West of 180 and East of the International
Dateline-
308 AM AKST Mon Jan 27 2020

...GALE WARNING TODAY...

.TODAY...E wind 20 to 35 kt. Seas 11 to 19 ft.
.TONIGHT...NE wind 15 to 30 kt. Seas 9 to 17 ft.
.TUE...NE wind 10 to 25 kt. Seas 7 to 12 ft.
.TUE NIGHT...N wind up to 20 kt. Seas 5 to 10 ft.
.WED...W wind up to 20 kt. Seas 3 to 7 ft.
.THU THROUGH FRI...W wind 10 to 25 kt. Seas 4 to 9 ft.

$$

PKZ412-280400-
Bering Sea Offshore 171W to 180 and North of 56N-
308 AM AKST Mon Jan 27 2020

.TODAY...NE wind 15 to 30 kt. Seas 6 to 11 ft. Freezing spray.
.TONIGHT...NE wind 15 to 25 kt. Seas 5 to 10 ft. Freezing spray.
.TUE...N wind 25 kt becoming 15 to 30 kt in the afternoon. Seas 5
to 8 ft. Freezing spray.
.TUE NIGHT...N wind 15 to 30 kt. Seas 5 to 10 ft.
.WED...N wind 15 to 30 kt. Seas 4 to 9 ft.
.THU...E wind up to 15 kt. Seas 3 to 6 ft.
.FRI...S wind 10 to 20 kt. Seas 4 to 9 ft.

$$

PKZ413-280400-
Bering Sea Offshore 171W to 180 and South of 56N-
308 AM AKST Mon Jan 27 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...NE wind 35 kt. Seas 11 to 17 ft. Freezing spray. Snow
showers.
.TONIGHT...NE wind 20 to 35 kt. Seas 10 to 17 ft. Freezing spray.
.TUE...N wind 25 kt. Seas 9 to 14 ft. Freezing spray.
.TUE NIGHT...N wind 15 to 30 kt. Seas 7 to 12 ft.
.WED...NW wind 15 to 30 kt. Seas 7 to 12 ft.
.THU THROUGH FRI...SW wind 10 to 25 kt. Seas 5 to 10 ft.

$$

PKZ414-280400-
Bering Sea Offshore East of 171W-
308 AM AKST Mon Jan 27 2020

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

.TODAY...N wind 30 kt. Seas 7 to 12 ft. Heavy freezing spray. Snow
showers.
.TONIGHT...N wind 30 kt. Seas 7 to 12 ft. Heavy freezing spray. Snow
showers.
.TUE...N wind 35 kt. Seas 8 to 13 ft. Heavy freezing spray. Snow
showers.
.TUE NIGHT...N wind 30 to 40 kt. Seas 8 to 16 ft.
.WED THROUGH THU...NW wind 25 to 40 kt. Seas 7 to 12 ft.
.FRI...SE wind 10 to 20 kt. Seas 3 to 6 ft.

$$

190 
FZAK62 PAFC 272359
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
259 PM AKST Mon Jan 27 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-281400-
259 PM AKST Mon Jan 27 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

High pressure exits the Western Bering by Wed afternoon. A series
of low centers South of the Aleutians slip into the North Pacific
through Wed afternoon. A 1010 mb Chukchi Sea low extends a trough
into the Eastern bering for Wed afternoon.

$$

PKZ411-281400-
Bering Sea Offshore West of 180 and East of the International
Dateline-
259 PM AKST Mon Jan 27 2020

.TONIGHT...NE wind 15 to 30 kt. Seas 9 to 16 ft.
.TUE...NE wind 10 to 25 kt. Seas 7 to 12 ft.
.TUE NIGHT...N wind 10 to 20 kt. Seas 5 to 10 ft.
.WED...NW wind 10 to 20 kt. Seas 3 to 7 ft.
.WED NIGHT...W wind up to 20 kt. Seas 3 to 6 ft.
.THU THROUGH FRI...W wind 10 to 25 kt. Seas 4 to 9 ft.
.SAT...NE wind 30 to 45 kt. Seas 13 to 21 ft.

$$

PKZ412-281400-
Bering Sea Offshore 171W to 180 and North of 56N-
259 PM AKST Mon Jan 27 2020

.TONIGHT...NE wind 15 to 25 kt. Seas 5 to 10 ft. Freezing spray.
.TUE...N wind 25 kt becoming 15 to 30 kt in the afternoon. Seas 5
to 8 ft. Freezing spray.
.TUE NIGHT...N wind 15 to 30 kt. Seas 5 to 10 ft. Freezing spray.
.WED...N wind 15 to 30 kt. Seas 5 to 10 ft.
.WED NIGHT...N wind up to 20 kt. Seas 3 to 7 ft.
.THU...E wind up to 15 kt. Seas 3 to 6 ft.
.FRI...S wind 10 to 20 kt. Seas 4 to 9 ft.
.SAT...E wind 20 to 35 kt. Seas 9 to 14 ft.

$$

PKZ413-281400-
Bering Sea Offshore 171W to 180 and South of 56N-
259 PM AKST Mon Jan 27 2020

...GALE WARNING TONIGHT...

.TONIGHT...NE wind 20 to 35 kt. Seas 10 to 16 ft. Freezing spray.
.TUE...N wind 25 kt. Seas 9 to 13 ft. Freezing spray.
.TUE NIGHT...N wind 15 to 30 kt. Seas 8 to 12 ft. Freezing spray.
.WED...N wind 15 to 30 kt. Seas 7 to 12 ft.
.WED NIGHT...NW wind 10 to 20 kt. Seas 6 to 9 ft.
.THU THROUGH FRI...SW wind 10 to 25 kt. Seas 5 to 10 ft.
.SAT...E wind 20 to 35 kt. Seas 10 to 18 ft.

$$

PKZ414-281400-
Bering Sea Offshore East of 171W-
259 PM AKST Mon Jan 27 2020

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

.TONIGHT...N wind 30 kt. Seas 7 to 12 ft. Heavy freezing spray.
.TUE...N wind 35 kt. Seas 8 to 13 ft. Heavy freezing spray.
.TUE NIGHT...N wind 30 to 40 kt. Seas 9 to 16 ft. Heavy freezing
spray.
.WED...N wind 30 to 40 kt. Seas 9 to 17 ft.
.WED NIGHT...N wind 25 to 40 kt. Seas 8 to 13 ft.
.THU...NW wind 20 to 35 kt. Seas 5 to 10 ft.
.FRI THROUGH SAT...SE wind 15 to 30 kt. Seas 4 to 9 ft.

$$

097 
FZAK62 PAFC 281226
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
326 AM AKST Tue Jan 28 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-290415-
326 AM AKST Tue Jan 28 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

High pressure exits the western Bering by Wed afternoon. A series of
low centers south of the Aleutians move into the North Pacific 
through Wed afternoon. 

$$

PKZ411-290415-
Bering Sea Offshore West of 180 and East of the International
Dateline-
326 AM AKST Tue Jan 28 2020

.TODAY...NE wind 10 to 25 kt. Seas 7 to 12 ft.
.TONIGHT...N wind 10 to 20 kt. Seas 5 to 10 ft.
.WED...NW wind 10 to 20 kt. Seas 4 to 7 ft. Snow and rain showers.
.WED NIGHT...W wind up to 20 kt. Seas 3 to 6 ft.
.THU THROUGH FRI...SW wind 10 to 25 kt. Seas 4 to 9 ft.
.SAT...E wind 20 to 35 kt. Seas 11 to 19 ft.

$$

PKZ412-290415-
Bering Sea Offshore 171W to 180 and North of 56N-
326 AM AKST Tue Jan 28 2020

...HEAVY FREEZING SPRAY WARNING TONIGHT AND WEDNESDAY...

.TODAY...N wind 25 kt becoming 15 to 30 kt in the afternoon. Seas
5 to 8 ft. Freezing spray.
.TONIGHT...N wind 15 to 30 kt. Seas 5 to 10 ft. Heavy freezing 
spray E of 174W.
.WED...N wind 15 to 30 kt. Seas 4 to 9 ft. Heavy freezing spray E of
174W in the morning.
.WED NIGHT...N wind up to 20 kt. Seas 3 to 6 ft.
.THU...E wind 10 to 25 kt. Seas 3 to 6 ft.
.FRI...S wind 10 to 25 kt. Seas 4 to 8 ft.
.SAT...SE wind 25 to 40 kt. Seas 10 to 18 ft.

$$

PKZ413-290415-
Bering Sea Offshore 171W to 180 and South of 56N-
326 AM AKST Tue Jan 28 2020

.TODAY...N wind 25 kt. Seas 9 to 13 ft. Freezing spray.
.TONIGHT...N wind 15 to 30 kt. Seas 7 to 11 ft. Freezing spray.
.WED...N wind 15 to 30 kt. Seas 6 to 11 ft. Freezing spray.
.WED NIGHT...NW wind 10 to 20 kt. Seas 7 ft.
.THU THROUGH FRI...SW wind 10 to 20 kt. Seas 4 to 9 ft.
.SAT...SE wind 30 to 45 kt. Seas 12 to 20 ft.

$$

PKZ414-290415-
Bering Sea Offshore East of 171W-
326 AM AKST Tue Jan 28 2020

...GALE WARNING THROUGH WEDNESDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY...

.TODAY...N wind 35 kt. Seas 7 to 12 ft. Heavy freezing spray.
.TONIGHT...N wind 30 to 40 kt. Seas 9 to 14 ft. Heavy freezing
spray.
.WED...N wind 30 to 40 kt. Seas 8 to 16 ft. Heavy freezing spray.
.WED NIGHT...N wind 25 to 40 kt. Seas 8 to 13 ft.
.THU...N wind 20 to 35 kt. Seas 5 to 10 ft.
.FRI...E wind up to 20 kt. Seas 3 to 5 ft.
.SAT...SE wind 25 to 40 kt. Seas 9 to 14 ft.

$$

949 
FZAK62 PAFC 282344
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
244 PM AKST Tue Jan 28 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-291430-
244 PM AKST Tue Jan 28 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

High pressure exits the Western Bering Wed afternoon and moves 
South of the Aleutians by Thu afternoon. A 1016 mb Sea of Okhotsk
low moves to the North Kamchatka coast at 1000 mb by Thu 
afternoon. Its front pushes across the Western Aleutians and 
Bering through Thu afternoon.

$$

PKZ411-291430-
Bering Sea Offshore West of 180 and East of the International
Dateline-
244 PM AKST Tue Jan 28 2020

.TONIGHT...N wind 10 to 20 kt. Seas 5 to 10 ft.
.WED...NW wind 10 to 20 kt. Seas 3 to 7 ft.
.WED NIGHT...W wind 10 to 20 kt. Seas 3 to 6 ft. Snow showers.
.THU...SW wind 10 to 25 kt. Seas 3 to 8 ft.
.THU NIGHT...SW wind 10 to 25 kt. Seas 3 to 8 ft.
.FRI...SW wind 10 to 25 kt. Seas 4 to 8 ft.
.SAT...E wind 20 to 35 kt. Seas 11 to 19 ft.
.SUN...N wind 15 to 30 kt. Seas 16 to 24 ft.

$$

PKZ412-291430-
Bering Sea Offshore 171W to 180 and North of 56N-
244 PM AKST Tue Jan 28 2020

...HEAVY FREEZING SPRAY WARNING THROUGH WEDNESDAY...

.TONIGHT...N wind 15 to 30 kt. Seas 6 to 11 ft. Heavy freezing 
spray.
.WED...N wind 15 to 30 kt. Seas 5 to 10 ft. Heavy freezing spray.
.WED NIGHT...N wind 10 to 20 kt. Seas 3 to 6 ft. Freezing spray.
.THU...NW wind up to 15 kt. Seas 3 to 6 ft.
.THU NIGHT...SE wind 15 to 30 kt. Seas 3 to 7 ft.
.FRI...S wind 15 to 30 kt. Seas 5 to 9 ft.
.SAT...SE wind 25 to 40 kt. Seas 10 to 18 ft.
.SUN...NE wind 15 to 25 kt. Seas 13 to 21 ft.

$$

PKZ413-291430-
Bering Sea Offshore 171W to 180 and South of 56N-
244 PM AKST Tue Jan 28 2020

.TONIGHT...N wind 15 to 30 kt. Seas 8 to 13 ft. Freezing spray.
.WED...N wind 15 to 30 kt. Seas 7 to 12 ft. Freezing spray.
.WED NIGHT...NW wind 10 to 20 kt. Seas 5 to 8 ft. Snow showers.
.THU...W wind 10 to 20 kt. Seas 4 to 9 ft.
.THU NIGHT...SW wind 10 to 20 kt. Seas 3 to 7 ft.
.FRI...SW wind 10 to 20 kt. Seas 6 ft.
.SAT...SE wind 30 to 45 kt. Seas 12 to 20 ft.
.SUN...E wind 15 kt. Seas 11 to 14 ft.

$$

PKZ414-291430-
Bering Sea Offshore East of 171W-
244 PM AKST Tue Jan 28 2020

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

.TONIGHT...N wind 30 to 40 kt. Seas 9 to 17 ft. Heavy freezing
spray.
.WED...N wind 30 to 40 kt. Seas 10 to 18 ft. Heavy freezing spray.
.WED NIGHT...N wind 25 to 40 kt. Seas 8 to 13 ft. Heavy freezing
spray.
.THU...NW wind 20 to 35 kt. Seas 6 to 11 ft.
.THU NIGHT...N wind 15 to 30 kt. Seas 3 to 8 ft.
.FRI...E wind 10 to 25 kt. Seas 3 to 6 ft.
.SAT THROUGH SUN...SE wind 25 to 40 kt. Seas 10 to 18 ft.

$$

394 
FZAK62 PAFC 291206
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
306 AM AKST Wed Jan 29 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-300315-
306 AM AKST Wed Jan 29 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

High pressure remains over the western Bering Sea with a strong
low in the Gulf of Alaska. A trough of low pressure will
strengthen over the western and central Bering Wed night through 
Fri morning.

$$

PKZ411-300315-
Bering Sea Offshore West of 180 and East of the International
Dateline-
306 AM AKST Wed Jan 29 2020

.TODAY...N to W wind 10 to 20 kt. Seas 3 to 7 ft.
.TONIGHT...W wind 10 to 20 kt. Seas 3 to 6 ft.
.THU...SW wind 10 to 20 kt. Seas 4 to 8 ft.
.THU NIGHT...W wind 10 to 25 kt. Seas 3 to 8 ft.
.FRI...SW wind 15 to 30 kt. Seas 6 to 11 ft.
.SAT...E wind 20 to 35 kt. Seas 10 to 18 ft.
.SUN...N wind 15 to 30 kt. Seas 16 to 24 ft.

$$

PKZ412-300315-
Bering Sea Offshore 171W to 180 and North of 56N-
306 AM AKST Wed Jan 29 2020

...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...NW wind 10 to 25 kt. Seas 5 to 10 ft. Heavy freezing spray.
.TONIGHT...N wind 10 to 20 kt. Seas 3 to 6 ft. Freezing spray.
.THU...SE wind up to 15 kt. Seas 2 to 6 ft.
.THU NIGHT...SE wind 15 to 30 kt. Seas 3 to 7 ft.
.FRI...S wind 15 to 30 kt. Seas 5 to 9 ft.
.SAT...SE wind 25 to 40 kt. Seas 10 to 18 ft.
.SUN...NE wind 15 to 25 kt. Seas 13 to 21 ft.

$$

PKZ413-300315-
Bering Sea Offshore 171W to 180 and South of 56N-
306 AM AKST Wed Jan 29 2020

.TODAY...NW wind 15 to 25 kt. Seas 7 to 12 ft. Freezing spray.
.TONIGHT...NW wind 10 to 20 kt. Seas 5 to 8 ft. Freezing spray.
Snow showers.
.THU...W wind 10 to 20 kt. Seas 4 to 9 ft. Snow showers.
.THU NIGHT...SW wind 10 to 25 kt. Seas 3 to 7 ft.
.FRI...SW wind 15 to 30 kt. Seas 5 to 10 ft.
.SAT...SE wind 30 to 45 kt. Seas 10 to 18 ft.
.SUN...E wind 15 kt. Seas 11 to 14 ft.

$$

PKZ414-300315-
Bering Sea Offshore East of 171W-
306 AM AKST Wed Jan 29 2020

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

.TODAY...N wind 25 to 40 kt. Seas 7 to 12 ft. Heavy freezing
spray.
.TONIGHT...N wind 20 to 35 kt. Seas 5 to 10 ft. Heavy freezing
spray.
.THU...N wind 15 to 30 kt. Seas 4 to 9 ft. Heavy freezing spray.
.THU NIGHT...NE wind 10 to 25 kt. Seas 3 to 7 ft.
.FRI...E wind 10 to 25 kt. Seas 3 to 6 ft.
.SAT THROUGH SUN...SE wind 25 to 40 kt. Seas 8 to 13 ft.

$$

192 
FZAK62 PAFC 300050
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
350 PM AKST Wed Jan 29 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-301345-
350 PM AKST Wed Jan 29 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

High pressure exits the Western Aleutians and slides South of the
Aleutians for Fri afternoon. A 1012 mb North Kamchatka low 
complex merges to form a 998 mb low at 58N 176E by Fri afternoon.
Its front pushes into the Central Bering through Fri afternoon.

$$

PKZ411-301345-
Bering Sea Offshore West of 180 and East of the International
Dateline-
350 PM AKST Wed Jan 29 2020

.TONIGHT...W wind 10 to 20 kt. Seas 3 to 6 ft.
.THU...SW wind 10 to 20 kt. Seas 3 to 6 ft.
.THU NIGHT...W wind 10 to 20 kt. Seas 3 to 8 ft. Freezing spray.
.FRI...W wind up to 20 kt. Seas 5 to 8 ft.
.FRI NIGHT...NE wind 15 to 30 kt. Seas 6 to 11 ft.
.SAT...NE wind 25 to 40 kt. Seas 11 to 19 ft.
.SUN...N wind 15 to 30 kt. Seas 16 to 25 ft.
.MON...NW wind 20 to 30 kt. Seas 12 to 17 ft.

$$

PKZ412-301345-
Bering Sea Offshore 171W to 180 and North of 56N-
350 PM AKST Wed Jan 29 2020

.TONIGHT...N wind 10 to 20 kt. Seas 3 to 6 ft. Freezing spray.
.THU...SE wind up to 15 kt. Seas 4 ft.
.THU NIGHT...SE wind 15 to 30 kt. Seas 3 to 7 ft. Freezing spray.
Snow showers.
.FRI...S wind 15 to 30 kt. Seas 4 to 9 ft.
.FRI NIGHT...SW wind 10 to 25 kt. Seas 4 to 8 ft.
.SAT...E wind 25 to 40 kt. Seas 10 to 18 ft.
.SUN THROUGH MON...NE wind 15 to 25 kt. Seas 12 to 20 ft.

$$

PKZ413-301345-
Bering Sea Offshore 171W to 180 and South of 56N-
350 PM AKST Wed Jan 29 2020

.TONIGHT...NW wind 10 to 20 kt. Seas 5 to 9 ft. Snow showers.
.THU...W wind 10 to 20 kt. Seas 4 to 7 ft. Snow showers.
.THU NIGHT...SW wind 10 to 20 kt. Seas 3 to 7 ft. Snow showers.
.FRI...W wind up to 20 kt. Seas 4 to 8 ft.
.FRI NIGHT...S wind 10 to 25 kt. Seas 5 to 10 ft.
.SAT...SE wind 25 to 40 kt. Seas 11 to 19 ft.
.SUN...E wind 15 kt. Seas 10 to 14 ft.
.MON...NW wind up to 15 kt. Seas 9 to 13 ft.

$$

PKZ414-301345-
Bering Sea Offshore East of 171W-
350 PM AKST Wed Jan 29 2020

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

.TONIGHT...N wind 20 to 35 kt. Seas 5 to 10 ft. Heavy freezing
spray.
.THU...N wind 15 to 30 kt. Seas 3 to 8 ft. Heavy freezing spray.
.THU NIGHT...NE wind 10 to 25 kt. Seas 1 to 6 ft. Heavy freezing
spray.
.FRI...E wind 10 to 25 kt. Seas 3 to 6 ft.
.FRI NIGHT...SE wind 10 to 25 kt. Seas 3 to 6 ft.
.SAT THROUGH SUN...SE wind 25 to 40 kt. Seas 8 to 13 ft.
.MON...E wind 15 kt. Seas 3 to 7 ft.

$$

274 
FZAK62 PAFC 301240
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
340 AM AKST Thu Jan 30 2020

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-310215-
340 AM AKST Thu Jan 30 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 1004 mb low near 59N 170E moves to 59N 174E while deepening to 
999 mb early Friday morning, then slowly moves south and
dissipates Friday night. A 957 mb North Pacific low moves to 44N 
171E Friday evening, then deepens to 948 mb as it moves to 43N 
173E early Saturday morning.

$$

PKZ411-310215-
Bering Sea Offshore West of 180 and East of the International
Dateline-
340 AM AKST Thu Jan 30 2020

.TODAY...SW wind 10 to 20 kt. Seas 3 to 6 ft.
.TONIGHT...W wind 10 to 25 kt. Seas 3 to 8 ft. Freezing spray.
.FRI...W wind 10 to 20 kt. Seas 7 ft. Freezing spray.
.FRI NIGHT...NE wind 10 to 25 kt. Seas 5 to 10 ft.
.SAT...NE wind 25 to 40 kt. Seas 13 to 21 ft.
.SUN...N wind 30 to 40 kt. Seas 22 to 28 ft.
.MON...N wind 30 kt. Seas 14 to 20 ft.

$$

PKZ412-310215-
Bering Sea Offshore 171W to 180 and North of 56N-
340 AM AKST Thu Jan 30 2020

.TODAY...SE wind up to 15 kt. Seas 4 ft.
.TONIGHT...SE wind 15 to 30 kt. Seas 3 to 7 ft. Freezing spray.
Snow showers.
.FRI...S wind 15 to 30 kt. Seas 4 to 9 ft. Freezing spray.
.FRI NIGHT...SW wind 10 to 25 kt. Seas 5 to 8 ft.
.SAT...E wind 25 to 40 kt. Seas 10 to 18 ft.
.SUN THROUGH MON...N wind 25 to 40 kt. Seas 15 to 23 ft.

$$

PKZ413-310215-
Bering Sea Offshore 171W to 180 and South of 56N-
340 AM AKST Thu Jan 30 2020

.TODAY...SW wind 10 to 25 kt. Seas 4 to 7 ft.
.TONIGHT...SW wind 10 to 25 kt. Seas 3 to 7 ft. Snow showers.
.FRI...W wind 10 to 25 kt. Seas 4 to 8 ft.
.FRI NIGHT...S wind 10 to 20 kt. Seas 5 to 8 ft.
.SAT THROUGH SUN...NE wind 25 to 40 kt. Seas 13 to 21 ft.
.MON...N wind 15 to 30 kt. Seas 16 to 22 ft.

$$

PKZ414-310215-
Bering Sea Offshore East of 171W-
340 AM AKST Thu Jan 30 2020

...HEAVY FREEZING SPRAY WARNING THROUGH TONIGHT...

.TODAY...N wind 15 to 30 kt. Seas 3 to 8 ft. Heavy freezing spray.
.TONIGHT...NE wind 10 to 25 kt. Seas 3 to 6 ft. Heavy freezing
spray.
.FRI...E wind 10 to 25 kt. Seas 3 to 6 ft. Freezing spray. Snow.
.FRI NIGHT...SE wind 10 to 25 kt. Seas 3 to 6 ft.
.SAT THROUGH SUN...S wind 20 to 35 kt. Seas 6 to 11 ft.
.MON...W wind 10 to 25 kt. Seas 3 to 8 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
438 PM AKST Sat Jan 25 2020

.ANALYSIS AND UPPER LEVELS...
In the upper levels, a blocking ridge extends from the eastern
Bering Sea northwestward to eastern Russia. High amplitude troughs
are positioned either side of the ridge, one over mainland Alaska
and the Gulf of Alaska and another over the western Aleutians and
northwest Bering Sea. Arctic air is firmly entrenched over
mainland Alaska. Deep northerly flow between low pressure in the
Gulf and high pressure in the Bering Sea is driving the arctic air
southward across Southwest Alaska into the eastern Bering as well
as across the Alaska Peninsula into the western Gulf and down
into the Pacific. This is leading to gusty northerly winds across
southwest Alaska and nearby coastal waters, along with low wind
chills over land areas and heavy freezing spray over marine areas.
As is typical the strongest winds are being observed out of bays
and passes along the south side of the Alaska Peninsula.

A multi-centered low is spinning over the central Gulf, with a
nearly stationary front aligned north to south from the eastern
Gulf down into the east Pacific. Southerly flow aloft on the east
side of the trough is advecting moisture northward across the
eastern Gulf, with some snow showers in the vicinity of Cordova
and on up into the southeastern Copper River Basin. Strong gap
winds, largely supported by tight pressure gradients, are being
observed along the Gulf coast and Prince William Sound as well as
through mountain passes over interior Southcentral.

To the west of the ridge, an old surface front is strung out from
the central Aleutians to the northwest Bering Sea, with a fairly
narrow band of snow right along it. A much larger swathe of gale
force winds can be found north and east if this boundary. The
parent low is nearly stationary near the Kamchatka Peninsula while
a newly formed compact (but deep) low is tracking north-northwest
toward the western Aleutians.

&&

.MODEL DISCUSSION...
Models continue to struggle with the position of multiple weak
lows over the Gulf of Alaska. They are in better (but not great)
agreement on the track of a low tracking up the front across the
eastern Gulf this afternoon through tonight. This will finally
bring some level of confidence to the precipitation forecast for
the Cordova-Valdez-Copper River Basin areas tonight. Models then
break down after this with position and track of numerous lows
crossing the Gulf through Monday night. None of these lows looks
particularly strong. Despite the large model spread, they at least
all show the same general trend, with lows progressing farther
north with time and more precipitation pushing onshore into
Southcentral. Will strive to depict these trends in the latest
forecast.

Model guidance is in much better agreement out west with lows
passing south of the Aleutians and with arctic air spilling south
and west across the Bering Sea over the next few days. There are
some challenges on the local scale with strength of winds as well
as temperatures and wind chills over Southwest Alaska, bit
overall forecast confidence for Southwest Alaska and the Bering
Sea/Aleutians is high.

&&

.AVIATION...
PANC...Expect winds to begin to diminish beginning some time this
evening and continuing overnight as the lows over the Gulf
approach Southcentral and push the core of northerly winds off to
the west. It is looking more and more likely for a period of light
snow during the day Sunday as the upper low center over the Gulf
lifts northward over Southcentral, pulling some of the low level
moisture north and west toward Anchorage. Forcing is weak and any
snow that does fall will be quite light, which makes for a
difficult ceiling/visibility forecast. MVFR seems like worst case
scenario, so have gone on the high end of this category for now.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
The main challenges for the current forecast are winds, cold
temperatures, and increasing chances for snow.

Gusty winds continue through channeled terrain and across the Gulf
tonight. Temperatures are forecast to be slightly colder than the
previous night as the upper level low over the Gulf becomes
negatively tilted. This negative tilt of the trough aloft helps
to pull cold air around the core of the system which generally
cools the column of air. This supports colder surface temperatures
through Monday.

For tonight, low pressure over the Gulf keeps ongoing narrow
bands of snow across the central and northern Gulf waters. Snow
spreads inland across Cordova and eastern areas of the Copper
River Valley during the overnight hours as a new surface low
develops and races north from the eastern Gulf. Models are in
better agreement with showing the western extent of frontal
boundary reaching Valdez after midnight. With cold air drainage
expected to continue, a blizzard warning was issued for Thompson
pass as white out conditions are expected during the frontal
passage. Valdez will experience blowing snow also with reduced
visibilities to one mile at times. The surface low driving the
front will quickly dissipate as it slams into the cold air mass
mid morning.

The most challenging question is how far north and west snow will
spread as the core of the upper low positions over the northern
Cook inlet early Sunday afternoon. Low to mid level moisture
streams across Prince William Sound to the Matanuska Valley.
Models were not showing any precipitation making it across the
Chugach Range yesterday, but are now starting to hint at snow
spreading toward Anchorage and the Matanuska Valley. Models
typically struggle on snow prediction when weak surface dynamics
are involved. Have trended the forecast to mention chances for
snow farther west on Sunday as the upper low moves significant
short waves northwestward across the Chugach and Talkeetna Ranges.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
The forecast for significant cold air spilling into Southwest
Alaska and the Kuskokwim Delta remains on track. The upper level
high pressure over the eastern Bering and the low in the Gulf of
Alaska are responsible for a tightening pressure gradient and the
resultant northerly winds that will bring dangerous wind chills to
the region on Sunday and Monday. Winds coming over the
southeastern Bering Sea waters will initiate snow showers across
much of the north side of the AKPEN Sunday into Monday.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
A north Pacific low will continue to generate windy conditions
across the western half of the Aleutian chain. A mix of rain and
snow showers will continue to impact the area as well through
Tuesday.

&&

.MARINE (Days 3 through 5: Tuesday through Thursday)...
Gulf of Alaska: Northerly outflow winds will continue through
bays and passes with areas of gales and heavy freezing spray
across Kamishak Bay and the Barren Islands early Tuesday. On
Tuesday, these winds will relax as a weak low and associated front
pushes inland along the Southcentral Coast. There is increasing
confidence that beginning late Tuesday a ~950mb low will develop
and lift north into the southern Gulf. This system will produce
widespread precipitation with easterly gales (perhaps some storm-
force winds as well) across the Gulf ahead of the low, reaching
the Southcentral Coast by Wednesday. Westerly gales will wrap
around the back side of the low. Waves in excess of 20 feet are
expected with this system.

Bering Sea and Aleutians: Gusty northerly winds will continue
across the eastern Bering through Tuesday with areas of gales and
heavy freezing spray along the Pacific side of the eastern
Aleutians and AKPEN. Gusts will increase along the AKPEN again
Wednesday as a low in the western Gulf strengthens.

&&

.LONG TERM FORECAST (Days 4 through 7)...
There is increasing confidence that a developing storm-force low
will push toward coastal Southcentral Alaska Wednesday. This will
usher in copious amounts of moisture in the form of snow over
much of the coast along with a southeasterly flow and warmer
temperatures. This system will weaken rapidly by late Wednesday as
it pushes onshore and runs into the arctic air entrenched over
interior portions of the Southern Mainland. Given the depth of the
colder air in place, there is still a fair bit of uncertainty
regarding how much of the precipitation makes it over interior
locations. There also remains the possibility that the
southeasterly flow initiates some downsloping over the Kenai and
Chugach and limits the potential for snow in the lee of these
mountains. Snow chances then increase for late Wednesday into
Thursday for the Kuskokwim Valley as the remaining energy from
this feature continues to trek inland and overruns the cold air in
place.

By the end of the week, confidence in the guidance wanes as
solutions diverge. Overall, the pattern remains an active and
unsettled one over Southcentral. The GFS keeps the upper-level
trough axis over the western Gulf, allowing a second deep low to
track north into the Gulf and toward the Southcentral Coast by
late Thursday into Friday. The EC, on the other hand, shifts the
trough axis to the east, shifting the brunt of this second surface
low toward the Alaska Panhandle.

Farther west, arctic air will remain in place over much of
Southwest Alaska, although there is the potential for a brief
period of moderation in the cold temperatures on Thursday as
clouds and light snow move across the region. For the Bering and
Aleutians, an area of low pressure will slide across the Bering
from west to east beginning late Thursday, reaching the AKPEN by
early Saturday. Models are then keying in on a deepening low
southwest of Shemya that looks to swing a front across the western
Bering for Saturday.

&&
.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Blizzard Warning 131 (T-Pass).
 Wind Chill Advisory 155 161.
MARINE...Gale Warning 121 127 128 130 131 138 139 150 175>178 185.
 Heavy Freezing Spray 121 127 129>131 137>139 141 150 155 165 179
                 185.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...SB
SOUTHCENTRAL ALASKA...KH
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...LB
MARINE/LONG TERM...TM