Gale Warning 296, NWS Anchorage, AK

448 
FZAK62 PAFC 262324
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
324 PM AKDT Thu Apr 26 2018

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.

PKZ499-271315-
324 PM AKDT Thu Apr 26 2018
.SYNOPSIS FOR CENTRAL BERING SEA...
A front associated with a Kamchatka low will move over the 
western Aleutians tonight. The associated 979 mb low will move 
to 57N 178W at 987 mb Fri afternoon then it will move inland over 
Bethel Sat morning. A 995 mb low develops at 50N 175E Sat morning 
then it will move to 54N 179W at 990 mb Sat afternoon.

$$

PKZ411-271315-
Bering Sea Offshore West of 180 and East of the International
Dateline-
324 PM AKDT Thu Apr 26 2018

...GALE WARNING TONIGHT...

.TONIGHT...S wind 20 to 35 kt. Seas 8 to 12 ft. Rain.
.FRI...SW wind 15 to 30 kt. Seas 9 to 14 ft. Rain.
.FRI NIGHT...W wind 15 to 30 kt becoming SW 10 to 20 kt 
after midnight. Seas 9 to 15 ft.
.SAT...SE wind 10 to 25 kt. Seas 8 to 11 ft.
.SAT NIGHT...SW wind 15 to 30 kt. Seas 8 to 13 ft.
.SUN...SW wind 15 to 30 kt. Seas 9 to 16 ft.
.MON...NW wind up to 20 kt. Seas 7 to 12 ft.
.TUE...SW wind up to 20 kt. Seas 5 to 8 ft.

$$

PKZ412-271315-
Bering Sea Offshore 171W to 180 and North of 56N-
324 PM AKDT Thu Apr 26 2018

.TONIGHT...SW wind 10 to 25 kt. Seas 10 ft.
.FRI...S wind 15 to 30 kt. Seas 7 to 12 ft. Rain and snow.
.FRI NIGHT...NW wind 15 to 30 kt. Seas 8 to 13 ft.
.SAT...E wind 10 to 25 kt. Seas 9 to 12 ft.
.SAT NIGHT...SE wind 25 to 40 kt. Seas 9 to 17 ft.
.SUN...SW wind 25 to 40 kt. Seas 9 to 17 ft.
.MON THROUGH TUE...W wind up to 20 kt. Seas 7 to 12 ft.

$$

PKZ413-271315-
Bering Sea Offshore 171W to 180 and South of 56N-
324 PM AKDT Thu Apr 26 2018

...GALE WARNING THROUGH FRIDAY...

.TONIGHT...SW wind 25 to 40 kt. Seas 11 ft. Rain.
.FRI...S wind 25 to 40 kt becoming SW in the afternoon. 
Seas 10 to 14 ft. Rain.
.FRI NIGHT...W wind 15 to 30 kt. Seas 14 ft.
.SAT...S wind 15 to 30 kt. Seas 8 to 12 ft.
.SAT NIGHT...SW wind 25 to 40 kt. Seas 10 to 18 ft.
.SUN...SW wind 25 to 40 kt. Seas 10 to 18 ft.
.MON THROUGH TUE...W wind 20 kt. Seas 9 to 14 ft.

$$

PKZ414-271315-
Bering Sea Offshore East of 171W-
324 PM AKDT Thu Apr 26 2018

...GALE WARNING FRIDAY...

.TONIGHT...SW wind 15 to 30 kt. Seas 9 to 12 ft.
.FRI...SW wind 15 to 30 kt becoming S 25 to 40 kt in the
afternoon. Seas 9 to 14 ft. Rain.
.FRI NIGHT...SW wind 15 to 30 kt. Seas 9 to 14 ft. Rain.
.SAT...SW wind 10 to 25 kt. Seas 8 to 13 ft.
.SAT NIGHT...S wind 20 to 35 kt. Seas 9 to 14 ft.
.SUN...SW wind 25 to 40 kt. Seas 10 to 18 ft.
.MON THROUGH TUE...SW wind 10 to 20 kt. Seas 7 to 12 ft.

$$

012 
FZAK62 PAFC 271204
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
404 AM AKDT Fri Apr 27 2018

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.

PKZ499-280130-
404 AM AKDT Fri Apr 27 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 998 mb low at 62N 166W moves to the Russian Chukchi Coast at
1001 mb for Sun morning. Its front slides over Southwest Alaska
through Fri afternoon. A 980 mb Kamchatka low moves to 61N 165W at
995 mb Sat morning. Its front sweeps the Aleutians into the Gulf
of Alaska by Sun morning. A 998 mb North Pacific low moves to 58N
171W at 985 mb by Sun morning.

$$

PKZ411-280130-
Bering Sea Offshore West of 180 and East of the International
Dateline-
404 AM AKDT Fri Apr 27 2018

.TODAY...SW wind 15 to 30 kt. Seas 9 to 14 ft. Rain.
.TONIGHT...W wind 15 to 30 kt becoming SW 10 to 20 kt after
midnight. Seas 9 to 15 ft.
.SAT...SE wind 10 to 20 kt. Seas 6 to 11 ft. Rain and snow.
.SAT NIGHT...W wind 15 to 30 kt. Seas 7 to 11 ft.
.SUN...SW wind 15 to 30 kt. Seas 9 to 14 ft.
.MON THROUGH TUE...W wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ412-280130-
Bering Sea Offshore 171W to 180 and North of 56N-
404 AM AKDT Fri Apr 27 2018

.TODAY...S wind 15 to 30 kt. Seas 7 to 12 ft. Rain and snow.
.TONIGHT...N to W wind 15 to 30 kt. Seas 8 to 13 ft.
.SAT...NE wind up to 15 kt becoming SE up to 20 kt in the
afternoon. Seas 9 to 12 ft. Rain.
.SAT NIGHT...SE wind 25 to 40 kt. Seas 9 to 14 ft.
.SUN...SW wind 25 to 40 kt. Seas 11 to 19 ft.
.MON...SW wind 10 to 25 kt. Seas 8 to 13 ft.
.TUE...NW wind 15 kt. Seas 7 ft.

$$

PKZ413-280130-
Bering Sea Offshore 171W to 180 and South of 56N-
404 AM AKDT Fri Apr 27 2018

...GALE WARNING TODAY...

.TODAY...S wind 25 to 40 kt becoming SW in the afternoon. Seas 10
to 14 ft. Rain.
.TONIGHT...W wind 15 to 30 kt. Seas 14 ft.
.SAT...S wind 10 to 25 kt. Seas 8 to 11 ft. Rain.
.SAT NIGHT...SW wind 20 to 35 kt. Seas 8 to 16 ft.
.SUN...SW wind 25 to 40 kt. Seas 10 to 17 ft.
.MON...SW wind 15 to 25 kt. Seas 9 to 14 ft.
.TUE...W wind 10 to 20 kt. Seas 8 ft.

$$

PKZ414-280130-
Bering Sea Offshore East of 171W-
404 AM AKDT Fri Apr 27 2018

...GALE WARNING TODAY...

.TODAY...SW wind 15 to 30 kt becoming S 25 to 40 kt in the
afternoon. Seas 9 to 14 ft. Rain and snow.
.TONIGHT...SW wind 15 to 30 kt. Seas 9 to 14 ft. Rain.
.SAT...W wind 10 to 25 kt. Seas 8 to 13 ft.
.SAT NIGHT...S wind 20 to 35 kt. Seas 8 to 12 ft.
.SUN...SW wind 25 to 40 kt. Seas 11 to 19 ft.
.MON...SW wind 10 to 25 kt. Seas 8 to 13 ft.
.TUE...W wind up to 15 kt. Seas 5 to 9 ft.

$$

033 
FZAK62 PAFC 272342
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
342 PM AKDT Fri Apr 27 2018

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.

PKZ499-281330-
342 PM AKDT Fri Apr 27 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 987 mb low at 58N 179W will move inland over Bethel Sat
afternoon at 999 mb. A 993 mb low will move to 49N 174E at 992 mb
Sat morning then it will move to 59N 177W at 977 mb Sun morning.
The low will then move into the northern Bering Sun afternoon. 

$$

PKZ411-281330-
Bering Sea Offshore West of 180 and East of the International
Dateline-
342 PM AKDT Fri Apr 27 2018

.TONIGHT...W wind 15 to 30 kt becoming SW 10 to 20 kt after
midnight. Seas 11 to 15 ft.
.SAT...SE wind 10 to 20 kt. Seas 7 to 12 ft. Rain and snow.
.SAT NIGHT...W wind 15 to 30 kt. Seas 8 to 13 ft. Rain.
.SUN...SW wind 15 to 30 kt. Seas 10 to 15 ft.
.SUN NIGHT...W wind 15 to 30 kt. Seas 10 to 15 ft.
.MON THROUGH TUE...W wind up to 20 kt. Seas 6 to 11 ft.
.WED...SE wind up to 15 kt. Seas 3 to 6 ft.

$$

PKZ412-281330-
Bering Sea Offshore 171W to 180 and North of 56N-
342 PM AKDT Fri Apr 27 2018

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...NW wind 10 to 25 kt except NE 10 to 20 kt N of 58N. Seas 
8 to 13 ft.
.SAT...N wind up to 20 kt becoming SE in the afternoon. Seas 11
ft. Rain.
.SAT NIGHT...SE wind 15 to 25 kt becoming SW 25 to 40 kt after
midnight. Seas 9 ft building to 10 to 18 ft after midnight. Rain.
.SUN...SW wind 25 to 40 kt. Seas 15 to 23 ft.
.SUN NIGHT...SW wind 15 to 30 kt. Seas 12 to 20 ft.
.MON...W wind 10 to 25 kt. Seas 8 to 13 ft.
.TUE...NW wind 15 kt. Seas 7 ft.
.WED...S wind 10 kt. Seas 6 ft.

$$

PKZ413-281330-
Bering Sea Offshore 171W to 180 and South of 56N-
342 PM AKDT Fri Apr 27 2018

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...W wind 15 to 30 kt. Seas 12 to 15 ft.
.SAT...SW wind 15 to 30 kt becoming SE. Seas 9 to 13 ft. Rain.
.SAT NIGHT...S wind 15 to 30 kt becoming W 20 to 35 kt. Seas 10 to 
18 ft.
.SUN...SW wind 25 to 35 kt. Seas 13 to 19 ft.
.SUN NIGHT...SW wind 30 kt. Seas 14 ft.
.MON...SW wind 10 to 25 kt. Seas 9 to 14 ft.
.TUE...W wind 10 to 20 kt. Seas 8 ft.
.WED...S wind 15 kt. Seas 6 ft.

$$

PKZ414-281330-
Bering Sea Offshore East of 171W-
342 PM AKDT Fri Apr 27 2018

...GALE WARNING SATURDAY NIGHT...

.TONIGHT...SW wind 15 to 30 kt. Seas 8 to 13 ft. Rain.
.SAT...W wind 10 to 25 kt. Seas 8 to 13 ft.
.SAT NIGHT...S wind 15 to 30 kt becoming W 20 to 35 kt. Seas 9 to 14
ft. Rain.
.SUN...SW wind 25 to 40 kt. Seas 12 to 20 ft.
.SUN NIGHT...SW wind 20 to 35 kt. Seas 13 to 21 ft.
.MON...SW wind 15 to 25 kt. Seas 8 to 13 ft.
.TUE...W wind up to 15 kt. Seas 5 to 9 ft.
.WED...SW wind up to 15 kt. Seas 4 to 7 ft.

$$

149 
FZAK62 PAFC 281157
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
357 AM AKDT Sat Apr 28 2018

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.

PKZ499-290115-
357 AM AKDT Sat Apr 28 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 994 mb low at 59N 168W moves inland this afternoon. A 984 mb low
at 54N 178E this afternoon moves to 59N 175W at 978 mb tonight.
The low then moves over Norton Sound at 980 mb Sun evening. 

$$

PKZ411-290115-
Bering Sea Offshore West of 180 and East of the International
Dateline-
357 AM AKDT Sat Apr 28 2018

.TODAY...SE wind 10 to 20 kt. Seas 7 to 11 ft. Rain.
.TONIGHT...W wind 15 to 30 kt. Seas 8 to 13 ft. Rain.
.SUN...SW wind 15 to 30 kt. Seas 10 to 16 ft.
.SUN NIGHT...W wind 15 to 30 kt. Seas 10 to 16 ft.
.MON THROUGH TUE...W wind up to 20 kt. Seas 6 to 11 ft.
.WED...SE wind up to 10 kt. Seas 3 to 6 ft.

$$

PKZ412-290115-
Bering Sea Offshore 171W to 180 and North of 56N-
357 AM AKDT Sat Apr 28 2018

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...N wind up to 20 kt becoming SE in the afternoon. 
Seas 11 ft. Rain.
.TONIGHT...SE wind 15 to 30 kt becoming SW 25 to 40 kt after
midnight. Seas 10 to 18 ft. Rain.
.SUN...SW wind 30 to 45 kt. Seas 15 to 25 ft.
.SUN NIGHT...SW wind 15 to 30 kt. Seas 13 to 20 ft.
.MON THROUGH TUE...NW wind 10 to 25 kt. Seas 8 to 13 ft.
.WED...S wind 10 kt. Seas 6 ft.

$$

PKZ413-290115-
Bering Sea Offshore 171W to 180 and South of 56N-
357 AM AKDT Sat Apr 28 2018

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...S wind 15 to 30 kt. Seas 8 to 13 ft. Rain.
.TONIGHT...SW wind 25 to 35 kt. Seas 10 to 18 ft.
.SUN...SW wind 25 to 35 kt. Seas 12 to 19 ft.
.SUN NIGHT...SW wind 30 kt. Seas 13 to 16 ft.
.MON THROUGH TUE...W wind 10 to 25 kt. Seas 6 to 11 ft.
.WED...S wind up to 15 kt. Seas 6 ft.

$$

PKZ414-290115-
Bering Sea Offshore East of 171W-
357 AM AKDT Sat Apr 28 2018

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...W wind 10 to 25 kt. Seas 9 to 13 ft.
.TONIGHT...S wind 20 to 35 kt. Seas 9 to 14 ft. Rain.
.SUN...W wind 30 to 45 kt. Seas 11 to 19 ft.
.SUN NIGHT...SW wind 20 to 35 kt. Seas 12 to 19 ft.
.MON THROUGH TUE...W wind 10 to 25 kt. Seas 7 to 12 ft.
.WED...SW wind 10 kt. Seas 4 to 7 ft.

$$

471 
FZAK62 PAFC 290000
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
400 PM AKDT Sat Apr 28 2018

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.

PKZ499-291300-
400 PM AKDT Sat Apr 28 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 980 mb low at 54N 176E will move to 59N 179W at 970 mb Sun 
morning. The low will then exit in the northern Bering Sun night. A 
front approaches the western Aleutians Mon afternoon.

$$

PKZ411-291300-
Bering Sea Offshore West of 180 and East of the International
Dateline-
400 PM AKDT Sat Apr 28 2018

...GALE WARNING THROUGH SUNDAY...

.TONIGHT...W wind 30 to 45 kt...except N to E wind 20 to 30 kt N of 
56N in the evening. Seas 9 to 16 ft. Rain.
.SUN...SW wind 25 to 40 kt diminishing to 20 to 30 kt in the
afternoon. Seas 12 to 16 ft.
.SUN NIGHT...W wind 15 to 30 kt. Seas 11 to 15 ft.
.MON...W wind up to 20 kt. Seas 8 to 12 ft.
.MON NIGHT...SE wind 10 to 25 kt. Seas 6 to 9 ft.
.TUE...W wind 10 to 25 kt. Seas 5 to 10 ft.
.WED...SE wind up to 10 kt. Seas 3 to 6 ft.
.THU...NW wind 10 to 20 kt. Seas 4 to 7 ft.

$$

PKZ412-291300-
Bering Sea Offshore 171W to 180 and North of 56N-
400 PM AKDT Sat Apr 28 2018

...STORM WARNING SUNDAY...

.TONIGHT...SE wind 20 to 35 kt becoming SW 30 to 45 kt after
midnight. Seas 9 to 12 ft in the evening building to 12 to 19 ft. 
Rain.
.SUN...SW wind 35 to 50 kt. Seas 17 to 26 ft.
.SUN NIGHT...W wind 25 to 40 kt. Seas 14 to 22 ft.
.MON...W wind 15 to 30 kt. Seas 11 to 15 ft.
.MON NIGHT...SW wind up to 15 kt. Seas 8 to 11 ft.
.TUE...N wind up to 15 kt. Seas 5 to 8 ft.
.WED...S wind 10 kt. Seas 6 ft.
.THU...N wind up to 15 kt. Seas 4 ft.

$$

PKZ413-291300-
Bering Sea Offshore 171W to 180 and South of 56N-
400 PM AKDT Sat Apr 28 2018

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SE to SW wind 25 to 40 kt. Seas building to 11 to 19 ft. 
Rain.
.SUN...SW wind 30 to 40 kt. Seas 14 to 19 ft.
.SUN NIGHT...SW wind 25 to 35 kt. Seas 12 to 16 ft.
.MON...W wind 15 to 25 kt. Seas 10 to 13 ft.
.MON NIGHT...SW wind 15 to 30 kt. Seas 8 to 11 ft.
.TUE...W wind 15 to 30 kt. Seas 7 to 11 ft.
.WED...S wind up to 15 kt. Seas 6 ft.
.THU...N wind up to 20 kt. Seas 3 to 7 ft.

$$

PKZ414-291300-
Bering Sea Offshore East of 171W-
400 PM AKDT Sat Apr 28 2018

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...Variable to 20 kt early becoming S wind 20 to 35 kt. Seas
8 to 13 ft. Rain.
.SUN...SW wind 25 to 40 kt. Seas 10 to 18 ft.
.SUN NIGHT...SW wind 25 to 35 kt. Seas 12 to 18 ft.
.MON...SW wind 20 to 30 kt. Seas 11 to 15 ft.
.MON NIGHT...W wind 10 to 25 kt. Seas 9 to 12 ft.
.TUE THROUGH WED...SW wind 10 to 25 kt. Seas 4 to 9 ft.
.THU...E wind up to 15 kt. Seas 3 to 5 ft.

$$

673 
FZAK62 PAFC 291118
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
318 AM AKDT Sun Apr 29 2018

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.

PKZ499-300030-
318 AM AKDT Sun Apr 29 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 971 mb low at 59N 179W moves to 62N 173W at 979 mb Sun night.
The low then moves over Norton Sound at 988 mb Mon evening and
then moves inland. A 1004 mb low forms near 55N 177E Mon night.

$$

PKZ411-300030-
Bering Sea Offshore West of 180 and East of the International
Dateline-
318 AM AKDT Sun Apr 29 2018

...GALE WARNING TODAY...

.TODAY...SW wind 25 to 40 kt becoming W 20 to 30 kt in the
afternoon. Seas 12 to 18 ft.
.TONIGHT...W wind 15 to 30 kt. Seas 13 to 16 ft.
.MON...SW wind 10 to 20 kt. Seas 10 to 13 ft.
.MON NIGHT...S wind 10 to 25 kt. Seas 7 to 10 ft.
.TUE...NW wind 10 to 25 kt. Seas 6 to 11 ft.
.WED...S wind up to 10 kt. Seas 3 to 7 ft.
.THU...NW wind 10 to 20 kt. Seas 4 to 7 ft.

$$

PKZ412-300030-
Bering Sea Offshore 171W to 180 and North of 56N-
318 AM AKDT Sun Apr 29 2018

...STORM WARNING TODAY...

.TODAY...SW wind 35 to 50 kt. Seas 18 to 27 ft.
.TONIGHT...W wind 25 to 40 kt. Seas 15 to 23 ft.
.MON...W wind 15 to 30 kt diminishing to 10 to 20 kt in the
afternoon. Seas 12 to 16 ft.
.MON NIGHT...SW wind up to 15 kt. Seas 8 to 11 ft.
.TUE THROUGH WED...S wind up to 20 kt. Seas 5 to 9 ft.
.THU...N wind up to 15 kt. Seas 4 ft.

$$

PKZ413-300030-
Bering Sea Offshore 171W to 180 and South of 56N-
318 AM AKDT Sun Apr 29 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 30 to 40 kt. Seas 15 to 20 ft.
.TONIGHT...SW wind 25 to 35 kt. Seas 12 to 17 ft.
.MON...W wind 15 to 25 kt. Seas 11 to 14 ft.
.MON NIGHT...SW wind 10 to 25 kt. Seas 9 ft.
.TUE...SW wind 15 to 30 kt. Seas 8 to 13 ft.
.WED...S wind 10 to 25 kt. Seas 6 to 11 ft.
.THU...N wind up to 20 kt. Seas 3 to 7 ft.

$$

PKZ414-300030-
Bering Sea Offshore East of 171W-
318 AM AKDT Sun Apr 29 2018

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 25 to 40 kt. Seas 11 to 19 ft.
.TONIGHT...SW wind 25 to 35 kt. Seas 13 to 19 ft.
.MON...SW wind 20 to 30 kt. Seas 12 to 16 ft.
.MON NIGHT...W wind 10 to 25 kt. Seas 8 to 11 ft.
.TUE THROUGH WED...SW wind 10 to 25 kt. Seas 5 to 10 ft.
.THU...E wind up to 15 kt. Seas 3 to 5 ft.

$$

165 
FZAK62 PAFC 292350
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
350 PM AKDT Sun Apr 29 2018

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.

PKZ499-301245-
350 PM AKDT Sun Apr 29 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 974 mb low at 62N 172W will move inland over Norton Sound at 985 
mb Mon morning. A 1006 mb Kamchatka low will move to 53N 166E Mon 
afternoon then it will move to 55N 180W at 1010 mb Tue night.

$$

PKZ411-301245-
Bering Sea Offshore West of 180 and East of the International
Dateline-
350 PM AKDT Sun Apr 29 2018

.TONIGHT...W wind 15 to 30 kt. Seas 13 ft.
.MON...W to N wind 10 to 20 kt. Seas 10 ft.
.MON NIGHT...Variable wind 10 to 15 kt. Seas 8 ft.
.TUE...NW wind up to 15 kt. Seas 6 ft.
.TUE NIGHT...N wind up to 20 kt. Seas 4 to 7 ft.
.WED THROUGH THU...NW wind 10 to 25 kt. Seas 4 to 8 ft.
.FRI...W wind 10 to 20 kt. Seas 5 to 9 ft.

$$

PKZ412-301245-
Bering Sea Offshore 171W to 180 and North of 56N-
350 PM AKDT Sun Apr 29 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 25 to 40 kt becoming W 15 to 30 kt after
midnight. Seas 13 to 21 ft.
.MON...W to N wind 10 to 25 kt. Seas 12 ft.
.MON NIGHT...W wind 10 to 15 kt. Seas 9 ft.
.TUE...SE wind 10 kt. Seas 4 to 8 ft.
.TUE NIGHT...E wind up to 15 kt. Seas 5 ft.
.WED THROUGH THU...N wind 10 to 25 kt. Seas 5 to 10 ft.
.FRI...NW wind 15 kt. Seas 6 to 9 ft.

$$

PKZ413-301245-
Bering Sea Offshore 171W to 180 and South of 56N-
350 PM AKDT Sun Apr 29 2018

.TONIGHT...SW wind 30 kt. Seas 13 to 16 ft.
.MON...W wind 25 kt. Seas 12 ft.
.MON NIGHT...SW wind 10 to 20 kt. Seas 10 ft.
.TUE...SW wind 10 to 25 kt. Seas 5 to 8 ft.
.TUE NIGHT...SW wind up to 20 kt. Seas 6 ft.
.WED...W wind 15 to 30 kt. Seas 6 to 11 ft.
.THU...N wind 10 to 20 kt. Seas 7 to 12 ft.
.FRI...W wind 20 kt. Seas 9 to 13 ft.

$$

PKZ414-301245-
Bering Sea Offshore East of 171W-
350 PM AKDT Sun Apr 29 2018

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 20 to 35 kt. Seas 13 to 20 ft.
.MON...SW wind 15 to 30 kt. Seas 11 to 14 ft.
.MON NIGHT...W wind 10 to 20 kt. Seas 9 ft.
.TUE...SW wind up to 20 kt. Seas 7 ft.
.TUE NIGHT...S wind up to 20 kt. Seas 5 to 8 ft.
.WED...S wind 10 to 25 kt. Seas 4 to 9 ft.
.THU...E wind up to 15 kt. Seas 4 to 9 ft.
.FRI...NW wind 10 to 20 kt. Seas 6 to 11 ft.

$$

389 
FZAK62 PAFC 301131
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
331 AM AKDT Mon Apr 30 2018

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.

PKZ499-010100-
331 AM AKDT Mon Apr 30 2018
.SYNOPSIS FOR CENTRAL BERING SEA...

A 981 mb low over Norton Sound moves inland this morning. A 1009
mb low at 54N 173E tonight moves to 57N 175W Tue night at 1004 mb.

$$

PKZ411-010100-
Bering Sea Offshore West of 180 and East of the International
Dateline-
331 AM AKDT Mon Apr 30 2018

.TODAY...W wind 10 to 20 kt. Seas 10 ft.
.TONIGHT...S wind 10 to 15 kt. Seas 8 ft.
.TUE...Variable wind up to 15 kt. Seas 6 ft.
.TUE NIGHT...NW wind up to 20 kt. Seas 4 to 7 ft.
.WED THROUGH THU...NW wind 10 to 20 kt. Seas 4 to 7 ft.
.FRI...W wind 10 to 20 kt. Seas 5 to 9 ft.

$$

PKZ412-010100-
Bering Sea Offshore 171W to 180 and North of 56N-
331 AM AKDT Mon Apr 30 2018

.TODAY...W wind 10 to 25 kt. Seas 12 ft.
.TONIGHT...W wind 10 to 15 kt. Seas 9 ft.
.TUE...SE wind 10 to 15 kt. Seas 7 ft.
.TUE NIGHT...E wind up to 15 kt. Seas 5 ft.
.WED THROUGH THU...N wind 10 to 25 kt. Seas 5 to 10 ft.
.FRI...NW wind 15 kt. Seas 6 to 9 ft.

$$

PKZ413-010100-
Bering Sea Offshore 171W to 180 and South of 56N-
331 AM AKDT Mon Apr 30 2018

.TODAY...W wind 25 kt. Seas 12 ft.
.TONIGHT...SW wind 10 to 20 kt. Seas 9 ft.
.TUE...S wind 10 to 20 kt. Seas 7 ft. Rain.
.TUE NIGHT...SW wind up to 20 kt. Seas 7 ft.
.WED...W wind 15 to 30 kt. Seas 5 to 9 ft.
.THU...NW wind 10 to 20 kt. Seas 7 to 12 ft.
.FRI...W wind 20 kt. Seas 9 to 13 ft.

$$

PKZ414-010100-
Bering Sea Offshore East of 171W-
331 AM AKDT Mon Apr 30 2018

.TODAY...SW wind 15 to 30 kt. Seas 11 to 14 ft.
.TONIGHT...W wind 10 to 20 kt. Seas 9 ft.
.TUE...SW wind 10 to 20 kt. Seas 8 ft. Snow and rain.
.TUE NIGHT...S wind 10 to 20 kt. Seas 6 ft.
.WED...S wind 15 to 30 kt. Seas 4 to 8 ft.
.THU...E wind 10 to 25 kt. Seas 4 to 9 ft.
.FRI...NW wind 10 to 20 kt. Seas 6 to 11 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
437 PM AKDT Wed Apr 25 2018

.ANALYSIS AND UPPER LEVELS...
A pool of cold air aloft from the nearly stationary low just south
of the Bering Strait continues to bring widespread rain and snow
showers as well as widespread clouds to much of the southern
Alaska Mainland. The most widespread shower activity has occurred
over the Northern Susitna Valley where persistent and moist
southwesterly flow has produced rain and snow since the front
passed through that area yesterday evening, allowing for about
4 inches of snowfall in the Cantwell area since yesterday
evening. Over the Southwest Mainland showers (mostly in the form
of snow) continue to move through the area and are beginning to
intensify with daytime heating. This may allow for the development
of a few isolated thunderstorms this evening (especially over
Eastern Bristol Bay). Conditions further west over the Bering
Sea/Aleutians are much quieter behind the upper level trough as
weak ridging is allowing for the development of stratus over the
Western Bering and diminishing winds.

&&

.MODEL DISCUSSION...
The models remain in great synoptic agreement through the work
week with the timing of a series of waves that will rotate around
the quasi-stationary upper low this week. Even with this good
agreement, there continue to be differences in the models in the
placement of shower activity as is often the case in these
southwesterly flow events. As a result, details in the precipitation
forecast into Friday focus on where there is agreement, such as
upslope prone areas of the Susitna Valley and Gulf Coast, with
widespread chance POP's elsewhere. Looking into Friday, agreement
begins to improve significantly as a much deeper upper level low
moves through the Bering into the southern Mainland. This is where
much of the focus was for forecast updates today.

&&

.AVIATION...
PANC...Gusty south to southeasterly winds are expected to
continue into Thursday with little change the pressure gradients
along the Chugach. There will be a uptick in the winds this
evening, producing gusts to around 35 kt, which should then
fall to around 25 kt after sunset as daytime heating diminishes.
Otherwise conditions should remain mostly VFR as rain and show
showers pass through the area. Forecast confidence is however
low in the timing and track of these showers, so there is a
possibility that conditions may intermittently drop to MVFR if
heavier showers move through the vicinity of the airport. The
greatest risk of showers moving near the airport will be from
convective activity along the Chugach this afternoon/evening.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
Persistence will be a great forecast for the next couple days.
The driver will be the upper level long-wave trough, but more
importantly, the cold air contained within. There is a weak short-
wave moving up Cook Inlet tonight, which looks to focus convection
along the western Kenai Peninsula, keeping it out of the
Anchorage Bowl. However, it won't be far away. These showers
should be mixed with rain and snow, possibly turning to all snow
in the Susitna Valley. Instability will be increasing as the cold
core aloft moves overhead tomorrow. Scattered rain showers will
increase in coverage during the afternoon, especially along the
higher terrain of the Chugach. These showers should be mostly
rain, but could see some rogue flakes or even graupel mixing down
to the surface in the more intense showers. The back edge of a
short-wave will pass late in the evening, bringing an end to the
showers, but the break will be short-lived.

A much stronger shortwave will be dropping out of the Bering
Strait region late Thursday evening. The effect will be first to
tighten the pressure gradient, returning stronger southeast gap
winds to Turnagain and Knik Arm, second to return rain and snow to
most areas. There is not any strong temperatures advection, either
warm or cold associated with this system, so precipitation type
should be strongly tied to the diurnal surface/low-level
temperatures. It likely will be rain during the day, mixed with
or changing to snow at night depending on location/elevation.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
Cool and wet weather continue to plague Southwest Alaska through
the forecast period as an upper level low remains in place over
the Bering, and showery onshore flow persists over the area. A
series of waves will rotate around the base of the upper low
through Friday, bringing enhanced shower activity to the Bristol
Bay coast and up through the Kuskokwim River Valley. Models are
currently indicating these enhanced showers to line up over the
Bristol Bay area overnight tonight into Thursday morning, with the
next stronger wave tracking into the Southwest Mainland Thursday
night. There is potential for these showers to become more deeply
convective in nature as limited surface heating combined with cold
air aloft will lead to steep mid-level lapse rates and decent
instability through this evening. Guidance continues to show a
line of enhanced showers forming from a line between King Salmon,
Iliamna, and Sparrevohn through this evening. Thus, embedded
isolated thunderstorms may be possible in this area.

With the secondary system tracking in Thursday night, another
round of enhanced showers and gusty winds are expected to spread
from the southwest coast inland through Friday afternoon. Colder
air associated with this system as well as plenty of antecedent
cold air at the surface should keep precipitation as snow for most
locations, though expected accumulations remain minimal at this
time.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
A broad upper low over the northeast Bering will remain stationary
through Thursday morning before shifting northward over the
Bering Strait by Thursday afternoon. Cool and showery conditions
over the eastern half of the Bering/Aleutians are expected to
persist through Thursday afternoon, under gusty westerly flow.
Whereas over the western half of the area, shortwave ridging
begins to build over the area tonight, bringing drier conditions
to the western/central Aleutians through Thursday afternoon. With
the shortwave trough dropping southward over the eastern Bering
Thursday, we are expecting colder temperatures and snow showers
to persist over the area through Thursday night.

By Thursday evening the next system enters the western
Bering/Aleutians, and tracks eastward through much of the Bering
and Aleutians by Friday night. This system will spread gale force
winds and rain along much of the chain, as it pulls warmer Pacific
air northward and tracks eastward across the Aleutian chain
through Friday night.

&&

.LONG TERM FORECAST (Days 3 through 7)...
A system over Southeast Alaska Friday evening will quickly move
east and dissipate Friday night. A fairly significant upper low
will be over the central/eastern Bering Friday night. The leading
front will push across Southwest Alaska early Saturday morning
and then into the Gulf and Southcentral during the day Saturday.
The upper level low will move eastward across the Gulf Saturday
night. A fairly strong surface low will move into the Bering on
Saturday. After this, the model guidance begins to diverge. The
models agree on continued fast zonal flow aloft, along with the
general idea of an upper low in the Bering and upper ridging over
the northeast Pacific into eastern Alaska. However, the location
and timing of various systems has a large spread in the guidance.
Therefore the fairly active weather pattern will continue, with
the details not well defined. Thus, the WPC guidance begins to
lean fairly heavily on the ensemble means after Monday.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Gale Warning 175 176 177 178.

&&

SYNOPSIS AND MODEL DISCUSSION...DEK
SOUTHCENTRAL ALASKA...MTL
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...TP
LONG TERM...BL