Gale Warning 301, NWS Anchorage, AK

280 
FZAK62 PAFC 012350
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
350 PM AKDT Wed Apr 1 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.

PKZ499-021430-
350 PM AKDT Wed Apr 1 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 1003 mb low at 58N 167E this afternoon will move to 63N 177W at
1006 mb Thursday afternoon. A second 981 mb low at 51N 165E early
Friday morning will move to 56N 173E at 989 mb Friday afternoon.

$$

PKZ411-021430-
Bering Sea Offshore West of 180 and East of the International
Dateline-
350 PM AKDT Wed Apr 1 2020

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

.TONIGHT...SW wind 25 increasing to 35 kt. Seas 9 to 17 ft.
.THU...SW wind 30 kt decreasing to 15 kt. Seas 9 to 17 ft. 
Rain and snow.
.THU NIGHT...SE wind 15 to 30 kt increasing to 25 to 40 kt after
midnight. Seas 8 to 16 ft. Rain and snow.
.FRI...S wind 30 to 45 kt. Seas 12 to 20 ft.
.FRI NIGHT...SW wind 30 to 45 kt. Seas 16 to 27 ft.
.SAT...SW wind 30 to 45 kt. Seas 16 to 24 ft.
.SUN...W wind 10 to 25 kt. Seas 5 to 10 ft.
.MON...SE wind 10 to 25 kt. Seas 5 ft.

$$

PKZ412-021430-
Bering Sea Offshore 171W to 180 and North of 56N-
350 PM AKDT Wed Apr 1 2020

...GALE WARNING THURSDAY...

.TONIGHT...SW wind 15 to 30 kt. Seas 7 to 12 ft. Rain showers and
snow showers.
.THU...W wind 25 to 35 kt. Seas 8 to 16 ft.
.THU NIGHT...SW wind 15 to 30 kt. Seas 9 to 14 ft. Rain.
.FRI...S wind 25 to 40 kt. Seas 11 to 19 ft.
.FRI NIGHT...S wind 30 to 40 kt. Seas 15 to 23 ft.
.SAT...SW wind 25 to 40 kt. Seas 16 to 24 ft.
.SUN THROUGH MON...W wind 10 to 25 kt. Seas 5 to 10 ft.

$$

PKZ413-021430-
Bering Sea Offshore 171W to 180 and South of 56N-
350 PM AKDT Wed Apr 1 2020

...GALE WARNING THURSDAY NIGHT...

.TONIGHT...SW wind 10 to 25 kt increasing to 20 to 30 kt after
midnight. Seas 5 to 10 ft.
.THU...SW wind 30 kt. Seas 9 to 14 ft.
.THU NIGHT...SW wind 20 to 35 kt becoming S 30 to 45 kt after
midnight. Seas 12 ft building to 11 to 18 ft after midnight. Rain.
.FRI...SW wind 35 to 50 kt. Seas 14 to 22 ft.
.FRI NIGHT...SW wind 35 to 45 kt. Seas 19 to 27 ft.
.SAT...SW wind 30 to 45 kt. Seas 13 to 27 ft.
.SUN THROUGH MON...SW wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ414-021430-
Bering Sea Offshore East of 171W-
350 PM AKDT Wed Apr 1 2020

.TONIGHT...W wind 10 to 25 kt. Seas 4 ft. Freezing spray.
.THU...SW wind 10 to 25 kt increasing to 20 to 30 kt in the
afternoon. Seas 4 to 9 ft. Freezing spray.
.THU NIGHT...W wind 25 kt becoming SW after midnight. Seas 6 to
11 ft. Freezing spray.
.FRI...SW wind 30 to 45 kt. Seas 9 to 14 ft.
.FRI NIGHT...SW wind 30 to 40 kt. Seas 9 to 17 ft.
.SAT...SW wind 25 to 35 kt. Seas 9 to 17 ft.
.SUN THROUGH MON...W wind 25 kt. Seas 6 to 11 ft.

$$

529 
FZAK62 PAFC 021154
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
354 AM AKDT Thu Apr 2 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.

PKZ499-030030-
354 AM AKDT Thu Apr 2 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A weakening frontal boundary will cross the northern Bering
through Thu afternoon. A strengthening front associated with a
970 mb Kamchatka low will enter the western Aleutians Thu morning
and then cover the remainder of the Aleutians and Bering Sea by
Fri afternoon as the 986 mb parent low enters the western Bering.

$$

PKZ411-030030-
Bering Sea Offshore West of 180 and East of the International
Dateline-
354 AM AKDT Thu Apr 2 2020

...GALE WARNING TONIGHT AND FRIDAY...

.TODAY...SW wind 15 to 30 kt. Seas 10 to 15 ft. Rain and snow.
.TONIGHT...S wind 20 to 35 kt. Seas 8 to 16 ft. Rain and snow.
.FRI...S wind 20 to 35 kt increasing to 30 to 45 kt in the
afternoon. Seas 12 to 20 ft. Rain.
.FRI NIGHT...SW wind 30 to 45 kt. Seas 16 to 23 ft.
.SAT...W wind 25 to 40 kt. Seas 13 to 21 ft.
.SUN THROUGH MON...SW wind 15 to 30 kt. Seas 6 to 11 ft.

$$

PKZ412-030030-
Bering Sea Offshore 171W to 180 and North of 56N-
354 AM AKDT Thu Apr 2 2020

...GALE WARNING TODAY AND FRIDAY...

.TODAY...W wind 20 to 35 kt. Seas 9 to 14 ft.
.TONIGHT...S wind 15 to 30 kt. Seas 9 to 13 ft. Rain.
.FRI...S wind 25 to 40 kt. Seas 10 to 18 ft. Rain.
.FRI NIGHT...S wind 25 to 40 kt. Seas 15 to 22 ft.
.SAT...W wind 25 to 40 kt. Seas 17 to 22 ft.
.SUN...W wind 20 to 35 kt. Seas 9 to 14 ft.
.MON...W wind 10 to 20 kt. Seas 4 to 9 ft.

$$

PKZ413-030030-
Bering Sea Offshore 171W to 180 and South of 56N-
354 AM AKDT Thu Apr 2 2020

...STORM WARNING FRIDAY...

.TODAY...SW wind 30 kt. Seas 7 to 12 ft.
.TONIGHT...SW wind 25 to 40 kt. Seas 10 to 17 ft. Rain.
.FRI...SW wind 35 to 50 kt. Seas 15 to 22 ft. Rain.
.FRI NIGHT...SW wind 35 to 45 kt. Seas 17 to 22 ft.
.SAT...W wind 25 to 40 kt. Seas 14 to 22 ft.
.SUN THROUGH MON...W wind 10 to 25 kt. Seas 7 to 12 ft.

$$

PKZ414-030030-
Bering Sea Offshore East of 171W-
354 AM AKDT Thu Apr 2 2020

...GALE WARNING FRIDAY...

.TODAY...SW wind 10 to 25 kt increasing to 20 to 30 kt in the
afternoon. Seas 3 to 8 ft. Freezing spray.
.TONIGHT...W wind 25 kt becoming SW after midnight. Seas 5 to 10
ft.
.FRI...SW wind 20 to 35 kt increasing to 30 to 40 kt in the
afternoon. Seas 8 to 13 ft. Snow.
.FRI NIGHT...SW wind 30 to 40 kt. Seas 10 to 18 ft.
.SAT...SW wind 25 to 35 kt. Seas 12 to 20 ft.
.SUN...W wind 15 to 30 kt. Seas 7 to 12 ft.
.MON...NW wind 15 to 25 kt. Seas 6 to 11 ft.

$$

782 
FZAK62 PAFC 022345
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
345 PM AKDT Thu Apr 2 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.

PKZ499-031300-
345 PM AKDT Thu Apr 2 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 981 mb low at 52N 165E tonight will move to 58N 172E at 990 mb
Friday afternoon. The low then moves to 64N 174W at 987 mb
Saturday afternoon. 

$$

PKZ411-031300-
Bering Sea Offshore West of 180 and East of the International
Dateline-
345 PM AKDT Thu Apr 2 2020

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 20 to 35 kt. Seas 9 to 17 ft. Rain and snow.
.FRI...S wind 20 to 35 kt increasing to 30 to 45 kt in the
afternoon. Seas 12 to 20 ft. Rain.
.FRI NIGHT...SW wind 30 to 45 kt. Seas 16 to 24 ft. Rain and snow.
.SAT...NW wind 25 to 40 kt. Seas 17 to 22 ft.
.SAT NIGHT...W wind 15 to 30 kt. Seas 12 to 19 ft.
.SUN THROUGH MON...SW wind 15 to 30 kt. Seas 6 to 11 ft.
.TUE...SE wind 10 to 20 kt. Seas 6 to 10 ft.

$$

PKZ412-031300-
Bering Sea Offshore 171W to 180 and North of 56N-
345 PM AKDT Thu Apr 2 2020

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...S wind 15 to 30 kt. Seas 9 to 13 ft. Rain and snow.
.FRI...S wind 25 to 40 kt. Seas 11 to 19 ft. Rain.
.FRI NIGHT...S wind 25 to 40 kt. Seas 16 to 22 ft. Rain and snow.
.SAT...W wind 25 to 40 kt. Seas 19 to 23 ft.
.SAT NIGHT...W wind 25 to 35 kt. Seas 18 to 21 ft.
.SUN...W wind 20 to 35 kt. Seas 9 to 14 ft.
.MON...W wind 10 to 20 kt. Seas 4 to 9 ft.
.TUE...S wind 15 kt. Seas 7 ft.

$$

PKZ413-031300-
Bering Sea Offshore 171W to 180 and South of 56N-
345 PM AKDT Thu Apr 2 2020

...STORM WARNING FRIDAY...

.TONIGHT...SW wind 25 to 40 kt. Seas 10 to 17 ft. Rain.
.FRI...SW wind 35 to 50 kt. Seas 15 to 23 ft. Rain.
.FRI NIGHT...SW wind 35 to 45 kt. Seas 18 to 23 ft.
.SAT...W wind 25 to 40 kt. Seas 18 to 23 ft.
.SAT NIGHT...W wind 15 to 30 kt. Seas 14 to 20 ft.
.SUN THROUGH MON...W wind 10 to 25 kt. Seas 7 to 12 ft.
.TUE...SE wind up to 20 kt. Seas 8 ft.

$$

PKZ414-031300-
Bering Sea Offshore East of 171W-
345 PM AKDT Thu Apr 2 2020

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...W wind 25 kt becoming SW after midnight. Seas 5 to 10
ft.
.FRI...SW wind 20 to 35 kt increasing to 30 to 40 kt in the
afternoon. Seas 8 to 13 ft. Rain and snow.
.FRI NIGHT...SW wind 30 to 40 kt. Seas 10 to 18 ft.
.SAT...SW wind 35 kt. Seas 12 to 20 ft.
.SAT NIGHT...W wind 25 to 35 kt. Seas 13 to 21 ft.
.SUN...W wind 15 to 30 kt. Seas 7 to 12 ft.
.MON...NW wind 15 to 25 kt. Seas 6 to 11 ft.
.TUE...W wind up to 15 kt. Seas 3 to 7 ft.

$$

125 
FZAK62 PAFC 031150
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
350 AM AKDT Fri Apr 3 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.

PKZ499-040145-
350 AM AKDT Fri Apr 3 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 978 mb low at 51N 165E will move to 59N 178E at 989 mb Sat
morning then moves into the Bering Strait by Sun morning. 

$$

PKZ411-040145-
Bering Sea Offshore West of 180 and East of the International
Dateline-
350 AM AKDT Fri Apr 3 2020

...GALE WARNING THROUGH SATURDAY...

.TODAY...S wind 20 to 35 kt increasing to 30 to 45 kt in the
afternoon. Seas 12 to 20 ft. Rain.
.TONIGHT...SW wind 30 to 45 kt. Seas 16 to 23 ft. Rain and snow.
.SAT...NW wind 25 to 40 kt. Seas 17 to 23 ft.
.SAT NIGHT...W wind 20 to 35 kt. Seas 12 to 20 ft.
.SUN...W wind 10 to 25 kt. Seas 8 to 13 ft.
.MON...SW wind 10 to 20 kt. Seas 4 to 9 ft.
.TUE...SE wind 10 to 25 kt. Seas 6 to 10 ft.

$$

PKZ412-040145-
Bering Sea Offshore 171W to 180 and North of 56N-
350 AM AKDT Fri Apr 3 2020

...GALE WARNING THROUGH SATURDAY...

.TODAY...S wind 25 to 40 kt. Seas 11 to 19 ft. Rain.
.TONIGHT...S wind 25 to 40 kt. Seas 16 to 22 ft. Rain and snow.
.SAT...W wind 25 to 40 kt. Seas 19 to 24 ft.
.SAT NIGHT...W wind 35 kt. Seas 18 to 23 ft.
.SUN...W wind 15 to 30 kt. Seas 10 to 18 ft.
.MON...W wind 10 to 20 kt. Seas 4 to 9 ft.
.TUE...S wind 15 kt. Seas 7 ft.

$$

PKZ413-040145-
Bering Sea Offshore 171W to 180 and South of 56N-
350 AM AKDT Fri Apr 3 2020

...STORM WARNING TODAY...

.TODAY...SW wind 35 to 50 kt. Seas 15 to 23 ft. Rain.
.TONIGHT...SW wind 35 to 45 kt. Seas 18 to 23 ft.
.SAT...W wind 25 to 40 kt. Seas 18 to 24 ft.
.SAT NIGHT...W wind 20 to 30 kt. Seas 14 to 21 ft.
.SUN...W wind 15 to 25 kt. Seas 9 to 17 ft.
.MON...W wind 10 to 20 kt. Seas 5 to 10 ft.
.TUE...S wind 10 to 20 kt. Seas 8 ft.

$$

PKZ414-040145-
Bering Sea Offshore East of 171W-
350 AM AKDT Fri Apr 3 2020

...GALE WARNING THROUGH SATURDAY...

.TODAY...SW wind 20 to 35 kt increasing to 30 to 40 kt in the
afternoon. Seas 9 to 14 ft. Rain and snow.
.TONIGHT...SW wind 30 to 40 kt. Seas 10 to 18 ft.
.SAT...SW wind 35 kt. Seas 12 to 20 ft.
.SAT NIGHT...W wind 25 to 35 kt. Seas 14 to 22 ft.
.SUN THROUGH TUE...W wind 15 to 30 kt. Seas 6 to 11 ft.

$$

323 
FZAK62 PAFC 032331
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
331 PM AKDT Fri Apr 3 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.

PKZ499-041315-
331 PM AKDT Fri Apr 3 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 988 mb low at 58N 172E this afternoon will move to 64N 174W at
987 mb Saturday afternoon. A front will enter the western Bering
Sunday morning and move into the central Bering Sunday afternoon.

$$

PKZ411-041315-
Bering Sea Offshore West of 180 and East of the International
Dateline-
331 PM AKDT Fri Apr 3 2020

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...SW wind 25 to 40 kt becoming NW. Seas 16 to 23 ft. Rain.
.SAT...NW wind 25 to 40 kt becoming W in the afternoon. Seas 17 to
21 ft.
.SAT NIGHT...W wind 15 to 30 kt. Seas 11 to 19 ft. Freezing spray.
.SUN...W wind 10 to 25 kt. Seas 8 to 13 ft.
.SUN NIGHT...NW wind 10 to 20 kt. Seas 6 to 9 ft.
.MON...SW wind up to 20 kt. Seas 4 to 9 ft.
.TUE THROUGH WED...E wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ412-041315-
Bering Sea Offshore 171W to 180 and North of 56N-
331 PM AKDT Fri Apr 3 2020

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...S wind 30 to 40 kt. Seas 16 to 21 ft. Rain showers.
.SAT...S wind 25 to 40 kt becoming W. Seas 19 to 25 ft.
.SAT NIGHT...W wind 35 kt. Seas 17 to 24 ft. Freezing spray.
.SUN...W wind 15 to 30 kt. Seas 11 to 18 ft.
.SUN NIGHT...W wind 10 to 20 kt. Seas 8 to 13 ft.
.MON...W wind 10 to 20 kt. Seas 4 to 9 ft.
.TUE...S wind 15 kt. Seas 7 ft.
.WED...SE wind 15 to 25 kt. Seas 5 to 10 ft.

$$

PKZ413-041315-
Bering Sea Offshore 171W to 180 and South of 56N-
331 PM AKDT Fri Apr 3 2020

...GALE WARNING THROUGH SATURDAY...

.TONIGHT...S wind 40 kt. Seas 17 to 23 ft.
.SAT...S wind 25 to 40 kt becoming W. Seas 18 to 24 ft.
.SAT NIGHT...W wind 15 to 30 kt. Seas 13 to 21 ft.
.SUN...W wind 10 to 25 kt. Seas 9 to 15 ft.
.SUN NIGHT...W wind 20 kt. Seas 8 to 11 ft.
.MON...NW wind 10 to 20 kt. Seas 4 to 9 ft.
.TUE...S wind 10 to 20 kt. Seas 8 ft.
.WED...SE wind 15 to 25 kt. Seas 7 to 12 ft.

$$

PKZ414-041315-
Bering Sea Offshore East of 171W-
331 PM AKDT Fri Apr 3 2020

...GALE WARNING THROUGH SATURDAY NIGHT...

.TONIGHT...SW wind 35 kt. Seas 10 to 18 ft.
.SAT...SW wind 35 kt. Seas 12 to 20 ft.
.SAT NIGHT...W wind 20 to 35 kt. Seas 13 to 21 ft. Freezing spray.
.SUN...W wind 15 to 30 kt. Seas 9 to 16 ft.
.SUN NIGHT...W wind 10 to 25 kt. Seas 6 to 11 ft.
.MON THROUGH TUE...W wind up to 20 kt. Seas 4 to 9 ft.
.WED...SE wind up to 20 kt. Seas 3 to 7 ft.

$$

038 
FZAK62 PAFC 041200
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
400 AM AKDT Sat Apr 4 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.

PKZ499-050045-
400 AM AKDT Sat Apr 4 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 988 mb low at 58N 178E will move ashore near 64N 167W at 983 mb
Sun morning. A 1017 mb low develops near 56W 179E Sun evening then
moves to 57N 174W at 1013 mb Mon morning.

$$

PKZ411-050045-
Bering Sea Offshore West of 180 and East of the International
Dateline-
400 AM AKDT Sat Apr 4 2020

...GALE WARNING TODAY...

.TODAY...NW wind 25 to 40 kt becoming W in the afternoon. Seas 17
to 23 ft.
.TONIGHT...W wind 15 to 30 kt. Seas 11 to 19 ft. Freezing spray.
.SUN...W wind 10 to 25 kt. Seas 8 to 13 ft. Freezing spray.
.SUN NIGHT...NW wind 15 to 25 kt. Seas 6 to 9 ft.
.MON...W wind up to 20 kt. Seas 4 to 8 ft.
.TUE...SE wind 10 to 25 kt. Seas 5 to 10 ft.
.WED...E wind 25 kt. Seas 8 to 11 ft.

$$

PKZ412-050045-
Bering Sea Offshore 171W to 180 and North of 56N-
400 AM AKDT Sat Apr 4 2020

...GALE WARNING THROUGH TONIGHT...

.TODAY...W wind 25 to 40 kt. Seas 19 to 24 ft.
.TONIGHT...W wind 35 kt. Seas 18 to 24 ft. Freezing spray.
.SUN...W wind 15 to 30 kt. Seas 11 to 19 ft. Freezing spray.
.SUN NIGHT...W wind up to 20 kt. Seas 8 to 13 ft.
.MON...NW wind up to 20 kt. Seas 4 to 8 ft.
.TUE...SW wind up to 20 kt. Seas 5 to 8 ft.
.WED...SE wind 15 to 25 kt. Seas 5 to 10 ft.

$$

PKZ413-050045-
Bering Sea Offshore 171W to 180 and South of 56N-
400 AM AKDT Sat Apr 4 2020

...GALE WARNING TODAY...

.TODAY...W wind 25 to 40 kt. Seas 19 to 24 ft.
.TONIGHT...W wind 15 to 30 kt. Seas 13 to 21 ft.
.SUN...W wind 10 to 25 kt. Seas 10 to 15 ft.
.SUN NIGHT...W wind 10 to 25 kt. Seas 8 to 11 ft.
.MON...NW wind 10 to 25 kt. Seas 6 to 11 ft.
.TUE...S wind 10 to 25 kt. Seas 5 to 9 ft.
.WED...SE wind 20 to 30 kt. Seas 7 to 12 ft.

$$

PKZ414-050045-
Bering Sea Offshore East of 171W-
400 AM AKDT Sat Apr 4 2020

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

.TODAY...SW wind 35 kt. Seas 13 to 21 ft.
.TONIGHT...W wind 20 to 35 kt. Seas 13 to 21 ft. Heavy freezing 
spray north of 58N.
.SUN...W wind 15 to 30 kt. Seas 9 to 17 ft. Freezing spray.
.SUN NIGHT...W wind 10 to 25 kt. Seas 7 to 12 ft.
.MON...SW wind 10 to 25 kt. Seas 4 to 9 ft.
.TUE...NW wind 10 to 25 kt. Seas 4 to 9 ft.
.WED...S wind 10 to 20 kt. Seas 3 to 7 ft.

$$

471 
FZAK62 PAFC 042343
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
343 PM AKDT Sat Apr 4 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.

PKZ499-051300-
343 PM AKDT Sat Apr 4 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A 985 mb low at 63N 175W moves into the Northern Bering Sea Sun. A 
low moves to 57N 170W at 1015 mb Mon afternoon. High pressure builds
across the western Aleutians and Bering Mon afternoon.

$$

PKZ411-051300-
Bering Sea Offshore West of 180 and East of the International
Dateline-
343 PM AKDT Sat Apr 4 2020

.TONIGHT...W wind 15 to 30 kt. Seas 11 to 19 ft. Freezing spray.
.SUN...SW wind 10 to 25 kt. Seas 9 to 14 ft. Freezing spray.
.SUN NIGHT...NW wind 10 to 25 kt. Seas 6 to 9 ft. Freezing spray.
.MON...NW wind up to 20 kt. Seas 5 to 8 ft.
.MON NIGHT...W wind up to 20 kt. Seas 5 ft.
.TUE...S wind 10 to 25 kt. Seas 4 to 9 ft.
.WED THROUGH THU...E wind 25 kt. Seas 7 to 11 ft.

$$

PKZ412-051300-
Bering Sea Offshore 171W to 180 and North of 56N-
343 PM AKDT Sat Apr 4 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 30 to 40 kt. Seas 18 to 24 ft. Freezing spray.
.SUN...W wind 15 to 30 kt. Seas 11 to 19 ft. Freezing spray.
.SUN NIGHT...SW wind 10 to 25 kt. Seas 9 to 14 ft. Freezing spray.
.MON...NW wind 10 to 25 kt. Seas 5 to 10 ft.
.MON NIGHT...NW wind up to 20 kt. Seas 5 to 8 ft.
.TUE...SW wind up to 20 kt. Seas 5 to 8 ft.
.WED THROUGH THU...SE wind 15 to 25 kt. Seas 7 to 12 ft.

$$

PKZ413-051300-
Bering Sea Offshore 171W to 180 and South of 56N-
343 PM AKDT Sat Apr 4 2020

.TONIGHT...W wind 15 to 30 kt. Seas 13 to 21 ft.
.SUN...W wind 10 to 25 kt becoming 15 kt in the afternoon. Seas 9
to 16 ft.
.SUN NIGHT...SW wind 10 to 25 kt. Seas 8 to 11 ft.
.MON...NW wind 10 to 25 kt. Seas 7 to 11 ft.
.MON NIGHT...NW wind 10 to 20 kt. Seas 6 to 10 ft.
.TUE...SW wind 10 to 25 kt. Seas 4 to 9 ft.
.WED THROUGH THU...SE wind 20 to 30 kt. Seas 7 to 12 ft.

$$

PKZ414-051300-
Bering Sea Offshore East of 171W-
343 PM AKDT Sat Apr 4 2020

...GALE WARNING TONIGHT...

.TONIGHT...W wind 25 to 35 kt. Seas 14 to 22 ft. Freezing spray.
.SUN...W wind 15 to 30 kt. Seas 10 to 16 ft. Freezing spray.
.SUN NIGHT...W wind 10 to 25 kt. Seas 7 to 12 ft. Freezing spray.
.MON...S wind 10 to 25 kt. Seas 5 to 10 ft.
.MON NIGHT...W wind 10 to 25 kt. Seas 6 to 11 ft.
.TUE...W wind up to 20 kt. Seas 4 to 9 ft.
.WED...S wind 10 to 20 kt. Seas 3 to 7 ft.
.THU...SE wind 20 kt. Seas 7 to 11 ft.

$$

631 
FZAK62 PAFC 051209
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
409 AM AKDT Sun Apr 5 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.

PKZ499-060045-
409 AM AKDT Sun Apr 5 2020
.SYNOPSIS FOR CENTRAL BERING SEA...

A frontal boundary from a 982 mb low in the Bering Strait will
impact the eastern Bering through Sun evening. A 1016 mb low
develops near 56N 176W early Mon morning then moves to 56N 163W 
by Tue morning at 1008 mb.

$$

PKZ411-060045-
Bering Sea Offshore West of 180 and East of the International
Dateline-
409 AM AKDT Sun Apr 5 2020

.TODAY...SW wind 10 to 25 kt. Seas 9 to 14 ft. Freezing spray.
.TONIGHT...NW wind 10 to 25 kt. Seas 6 to 10 ft. Freezing spray.
.MON...NW wind 10 to 20 kt. Seas 7 ft.
.MON NIGHT...SW wind up to 20 kt. Seas 5 ft.
.TUE...S wind 10 to 25 kt. Seas 4 to 7 ft.
.WED THROUGH THU...E wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ412-060045-
Bering Sea Offshore 171W to 180 and North of 56N-
409 AM AKDT Sun Apr 5 2020

.TODAY...W wind 15 to 30 kt. Seas 11 to 19 ft. Freezing spray.
.TONIGHT...SW wind 10 to 25 kt. Seas 9 to 14 ft. Freezing spray.
.MON...NW wind 10 to 25 kt. Seas 6 to 10 ft. Freezing spray.
.MON NIGHT...NW wind up to 20 kt. Seas 6 ft.
.TUE...SW wind up to 20 kt. Seas 4 to 7 ft.
.WED THROUGH THU...SE wind 10 to 25 kt. Seas 7 to 12 ft.

$$

PKZ413-060045-
Bering Sea Offshore 171W to 180 and South of 56N-
409 AM AKDT Sun Apr 5 2020

.TODAY...W wind 10 to 25 kt becoming 15 kt in the afternoon. Seas
9 to 16 ft.
.TONIGHT...SW wind 10 to 25 kt. Seas 8 to 11 ft.
.MON...NW wind 15 to 25 kt. Seas 7 to 10 ft.
.MON NIGHT...NW wind up to 20 kt. Seas 5 to 9 ft.
.TUE...SW wind up to 20 kt. Seas 5 ft.
.WED THROUGH THU...SE wind 15 to 25 kt. Seas 7 to 12 ft.

$$

PKZ414-060045-
Bering Sea Offshore East of 171W-
409 AM AKDT Sun Apr 5 2020

.TODAY...W wind 15 to 30 kt. Seas 10 to 17 ft. Freezing spray.
.TONIGHT...W wind 10 to 25 kt. Seas 8 to 13 ft. Freezing spray.
.MON...SW wind 10 to 25 kt. Seas 5 to 10 ft. Freezing spray.
.MON NIGHT...NW wind 15 to 30 kt. Seas 6 to 11 ft.
.TUE...W wind 10 to 25 kt. Seas 4 to 9 ft.
.WED...SW wind 10 to 20 kt. Seas 3 to 7 ft.
.THU...SE wind 10 to 25 kt. Seas 7 to 11 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
444 PM AKDT Tue Mar 31 2020

.ANALYSIS AND UPPER LEVELS...
A short-wave ridge has moved over Southcentral Alaska, with
widespread sunny skies and generally light winds. A long-wave
trough encompasses the Bering Sea and western Alaska. The feature
of most interest is a surface low along the Alaska Peninsula,
which has been tracking very slowly northeastward. Rain is falling
across the southern Alaska Peninsula, and slowly spreading toward
Bristol Bay, where a colder air mass is in place and will mostly
lead to snow as precipitation first arrives this afternoon or
evening. Meanwhile, a short-wave trough is digging southeastward
across the western Bering Sea and into the North Pacific. This is
leading to amplification of the upper level flow, which will cause
the surface low along the Alaska Peninsula to take a more northerly
track across the Alaska Peninsula and toward Bristol Bay. There
are a few showers ahead of the upper short-wave crossing the
Bering, but overall weather conditions across the Bering and
Aleutians are benign.

&&

.MODEL DISCUSSION...
Models are in good agreement with large scale features through
Friday. The primary forecast challenge will be precipitation type
and snow accumulation, as these become more difficult late in the
season due to the increasing sun angle and solar radiation.

&&

.AVIATION...
PANC...VFR conditions and light winds will persist.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)...
(Tonight through Friday evening)

A return to a more unsettled pattern is in store for all of
southcentral Alaska and Kodiak Island, as a series of disturbances
cross the region. The first pair of disturbances is a jet streak
in the northern jet stream, currently lifting from the coastal
regions of the Yukon Delta towards the North Slope, and a
southern jet streak rounding the base of a ridge centered in the
north central Pacific. This southern disturbance is currently
south of Cold Bay and is heading for Kodiak Island.

This places Kodiak island, the Mat-Su Valleys, and the Anchorage
Bowl/Kenai Peninsula in a coupled jet region to some extent
(spacing between the northern and southern streams is a little
further than what you'd normally prefer to see), allowing
precipitation to continue to expand in coverage through at least
Wednesday morning. This is also evident on the latest infrared
satellite loop, as it shows cloud top cooling commencing.

As we head into Wednesday afternoon and Thursday morning, a lead
vorticity lobe (another type of disturbance aloft) will pivot
across the region that's attached to a Siberian mid-level low,
followed by a deepening trough that dives from the Kuskokwim Delta
towards the southwestern Gulf. This latter feature has shown a
deeper signature in the latest numerical runs, as energy in the
jet stream from the Siberian low gets infused into it as it
enters our neck of the woods. This places all of southcentral in a
favorable left exit region, with cyclogenesis (low pressure
development) occurring in the base of the trough over the Gulf by
Friday. These features will be good sources of lift in an
increasingly moist atmosphere.

The net affect of all this is precipitation will affect all of the
region at some point during the next few days, with snow being the
predominating precipitation type for the interior mainland, aside
from near the Cook Inlet where sufficient warming may allow for a
brief mix of rain and snow to occur during peak heating on
Thursday, and near the coastal locations of the Gulf.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2...Wed and Thu)...
A weak closed low is drifting across the Alaska Peninsula and
pushing a frontal system onto the coast of Bristol Bay this
evening. This will bring light snow and gusty winds to the area
through the evening. However, the system will also bring some
warmer air, especially in locations where winds shift out of the
southeast (King Salmon, Iliamna). This will allow rain to mix in
with the snow and limit potential accumulations for many
population centers. The other factors that will keep
accumulations in check will be the sun angle and length of day. As
we move into April, significant accumulating snows become harder
to come by. That said, the area north and west of King Salmon may
see several inches of snow.

This system now appears to hang up along the Alaska Range longer
into Thu. We have increased PoPs over those interior locations
Thu with a deep (albeit fast-moving) trough, cold air advection,
and moderate southwest flow. This feature holds on until a much
stronger shortwave plows into SW AK from the Bering Strait. This
final system won't have much moisture associated with it, but it
will bring a robust, reinforcing shot of cold air. After a final
passing shot of snow, there will be a short-lived lull in the
active pattern for Fri before another system arrives for the
weekend.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2...Wed and
Thu)...
A weak closed low will slide over the Alaska Peninsula while
weather remains relatively quiet over the Bering to start this
period. The low will continue to keep low ceilings and mostly rain
(mixed with some snow at higher elevations) along the Alaska
Peninsula tonight. A developing inverted trough will help to keep
light rain falling from Sand Point east Wed night into Thu. Active
weather will resume over the Bering courtesy of a potent shortwave
tracking east off the Kamchatka Peninsula. This should bring gale
force winds to much of the Bering Sea late Wed into Thu. The next
system will drive up from the North Pacific into the Western
Aleutians late Thu into Fri. We have introduced some storm force
gusts with this feature. It will also bring very warm air (850 mb
temperatures at 6C) and widespread moderate rain.

&&

.MARINE (Days 3 through 5/Friday through Sunday)...

Bering Sea/Aleutians...
A large and strong storm system approaches the Bering from the
North Pacific on Friday. There is a fairly large disagreement with
respect to how fast the system is moving, though there is
consistency with the system tracking northeastward from the
western Bering/Aleutians into the central Bering. Gale force winds
are expected Friday afternoon and evening across the western
Aleutians. There is low to moderate confidence that these gale
force sustained winds will reach the central Aleutians. Confidence
in the overall forecast rapidly degrades on Saturday as large
discrepancies exist between guidance. The forecast challenge
during this period will be the location of gale force sustained
winds as different solutions show gales, however they show these
gales are in different portions of the Bering.

Gulf of Alaska...
Uncertainty increases on Friday as solutions show a weak low
developing in the northern Gulf, though solutions vary with the
placement and intensity of the low center. There is a chance that
this low will produce gale force northwesterly gap winds at times
through the straits in the western Gulf on Friday. There is low
confidence in the wind forecast on Saturday, especially across the
western Gulf as solutions show significant differences in a low
over the central to eastern Bering.

&&

.LONG TERM FORECAST (Days 4 through 7/Saturday through Tuesday)...

The upper ridging over the Bering is expected to move over the
Alaskan mainland on Saturday which will result in quiet weather
across the area. This upper ridging will not last long as guidance
is consistent with a second upper trough moving over the Alaskan
mainland Sunday afternoon. There is a high degree of variation in
the magnitude of this incoming upper trough but we can infer this
will mean colder than normal temperatures for the region. Guidance
shows the upper trough remaining in place over the Alaskan mainland
on Monday and Tuesday which will allow for these cold temperatures
to continue across the area.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale 178. Heavy Freezing Spray 180.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...SEB
SOUTHCENTRAL ALASKA...PD
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MSO
MARINE/LONG TERM...ED