Heavy Freezing Spray Warning 7, NWS Anchorage, AK

222 
FZAK62 PAFC 170027
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
327 PM AKST Sat Jan 16 2021

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.

PKZ499-171415-
327 PM AKST Sat Jan 16 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A deepening 983 mb Northwest Pacific storm moves to the Bering near 
53N 160E Sun morning, then continues through 54N 166E at 972 mb Mon 
afternoon. An associated front moves across the central Bering 
through Mon afternoon. Along the frontal boundary, a 988 mb low 
emerges near 55N 179W on Mon morning, then moves to 56N 179E at 976 
mb by Mon afternoon.

$$

PKZ411-171415-
Bering Sea Offshore West of 180 and East of the International
Dateline-
327 PM AKST Sat Jan 16 2021

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...SW wind 10 to 25 kt. Seas 6 to 9 ft. Freezing spray.
.SUN...SE wind 15 to 30 kt increasing to 25 to 40 kt in the
afternoon. Seas 7 to 15 ft. Freezing spray.
.SUN NIGHT...SE wind 20 to 35 kt. Seas 9 to 17 ft. Freezing spray.
.MON...SW wind 20 to 35 kt. Seas 12 to 18 ft.
.MON NIGHT...SW wind 20 to 35 kt. Seas 13 to 18 ft.
.TUE...S wind 15 to 30 kt. Seas 10 to 18 ft.
.WED...N wind 10 to 25 kt. Seas 11 to 19 ft.
.THU...S wind 10 to 25 kt. Seas 12 to 18 ft.

$$

PKZ412-171415-
Bering Sea Offshore 171W to 180 and North of 56N-
327 PM AKST Sat Jan 16 2021

.TONIGHT...NW wind 15 to 30 kt. Seas 8 to 13 ft. Freezing spray.
.SUN...NW wind 10 to 25 kt. Seas 6 to 12 ft. Freezing spray.
.SUN NIGHT...Variable wind up to 20 kt becoming E 15 to 30 kt after 
midnight. Seas 4 to 9 ft. Freezing spray.
.MON...E wind 15 to 30 kt. Seas 6 to 11 ft.
.MON NIGHT...SE wind 20 to 35 kt. Seas 9 to 15 ft.
.TUE...S wind 10 to 25 kt. Seas 11 to 14 ft.
.WED THROUGH THU...SE wind 15 to 30 kt. Seas 13 to 27 ft.

$$

PKZ413-171415-
Bering Sea Offshore 171W to 180 and South of 56N-
327 PM AKST Sat Jan 16 2021

.TONIGHT...NW wind 15 to 30 kt. Seas 9 to 15 ft. Freezing spray.
.SUN...SW wind 15 to 30 kt. Seas 8 to 14 ft. Freezing spray.
.SUN NIGHT...SE wind 15 to 30 kt. Seas 7 to 13 ft.
.MON...SW wind 15 to 30 kt. Seas 7 to 12 ft.
.MON NIGHT...SW wind 10 to 25 kt. Seas 8 to 13 ft.
.TUE...SW wind 20 to 30 kt. Seas 10 to 15 ft.
.WED...E wind 15 to 30 kt. Seas 15 to 26 ft.
.THU...S wind 20 to 30 kt. Seas 16 to 21 ft.

$$

PKZ414-171415-
Bering Sea Offshore East of 171W-
327 PM AKST Sat Jan 16 2021

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

.TONIGHT...NW wind 25 to 40 kt. Seas 9 to 17 ft. Heavy freezing 
spray north of 57N.
.SUN...NW wind 25 to 40 kt. Seas 9 to 17 ft. Heavy freezing 
spray north of 57N.
.SUN NIGHT...NW wind 10 to 25 kt. Seas 6 to 13 ft. Heavy freezing 
spray north of 57N.
.MON...N wind 10 to 25 kt. Seas 4 to 8 ft.
.MON NIGHT...SE wind 15 to 30 kt. Seas 5 to 10 ft.
.TUE...SW wind 15 to 30 kt. Seas 7 to 12 ft.
.WED THROUGH THU...SE wind 25 to 40 kt. Seas 9 to 17 ft.

$$

562 
FZAK62 PAFC 171249
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
349 AM AKST Sun Jan 17 2021

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.

PKZ499-180200-
349 AM AKST Sun Jan 17 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 971 mb Northwest Pacific storm moves to the Bering near 53N 
160E Sun morning, then continues through 54N 166E at 969 mb Mon 
afternoon. An associated front moves across the Central Bering 
through Mon afternoon. Along the frontal boundary, a 988 mb low 
emerges near 53N 172W on Mon afternoon, then moves to 58N 172W at 
980 mb by Tue morning.

$$

PKZ411-180200-
Bering Sea Offshore West of 180 and East of the International
Dateline-
349 AM AKST Sun Jan 17 2021

...GALE WARNING THROUGH MONDAY...

.TODAY...S wind 15 to 30 kt becoming SE 25 to 40 kt in the
afternoon. Seas 7 to 12 ft. Freezing spray.
.TONIGHT...SE wind 25 to 40 kt. Seas 9 to 17 ft. 
Freezing spray north of 57N.
.MON...SW wind 20 kt south of 57N. E wind 35 kt north of 57N. Seas 
13 to 19 ft. Freezing spray north of 57N.
.MON NIGHT...SW wind 20 to 35 kt. Seas 14 to 19 ft.
.TUE...S wind 10 to 25 kt. Seas 9 to 17 ft.
.WED...NW wind 15 to 30 kt. Seas 12 to 20 ft.
.THU...SW wind 10 to 25 kt. Seas 11 to 18 ft.

$$

PKZ412-180200-
Bering Sea Offshore 171W to 180 and North of 56N-
349 AM AKST Sun Jan 17 2021

.TODAY...NW wind 10 to 25 kt. Seas 6 to 11 ft. Freezing spray.
.TONIGHT...NE wind up to 20 kt becoming E 15 to 30 kt after
midnight. Seas 5 to 8 ft. Freezing spray.
.MON...E wind 15 to 30 kt. Seas 8 to 13 ft. Freezing spray.
.MON NIGHT...SE wind 15 to 30 kt. Seas 9 to 15 ft.
.TUE...S wind 15 to 30 kt. Seas 11 to 15 ft.
.WED...E wind 20 to 35 kt. Seas 15 to 23 ft.
.THU...SW wind 20 to 35 kt. Seas 12 to 18 ft.

$$

PKZ413-180200-
Bering Sea Offshore 171W to 180 and South of 56N-
349 AM AKST Sun Jan 17 2021

...GALE WARNING TONIGHT...

.TODAY...W wind 15 to 30 kt. Seas 7 to 12 ft. Freezing spray.
.TONIGHT...SE wind 20 to 35 kt. Seas 7 to 12 ft.
.MON...S wind 15 to 30 kt. Seas 7 to 12 ft.
.MON NIGHT...SW wind 10 to 25 kt. Seas 9 to 13 ft.
.TUE...S wind 25 to 40 kt. Seas 11 to 16 ft.
.WED...S wind 25 to 40 kt. Seas 15 to 23 ft.
.THU...SW wind 15 to 30 kt. Seas 9 to 14 ft.

$$

PKZ414-180200-
Bering Sea Offshore East of 171W-
349 AM AKST Sun Jan 17 2021

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

.TODAY...NW wind 20 to 35 kt. Seas 9 to 15 ft. Heavy freezing spray
north of 57N. Snow.
.TONIGHT...NW wind 10 to 25 kt. Seas 6 to 11 ft. Heavy freezing 
spray north of 57N.
.MON...N wind 10 to 25 kt. Seas 3 to 8 ft. Heavy freezing spray north
of 57N.
.MON NIGHT...E wind 10 to 25 kt. Seas 4 to 9 ft.
.TUE...S wind 15 to 30 kt. Seas 6 to 11 ft.
.WED...SE wind 20 to 35 kt. Seas 10 to 18 ft.
.THU...S wind 20 to 35 kt. Seas 9 to 17 ft.

$$

878 
FZAK62 PAFC 172346
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
246 PM AKST Sun Jan 17 2021

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.

PKZ499-181430-
246 PM AKST Sun Jan 17 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 967 mb Kamchatka low at 63N 161E moves to 54N 170E at 974 mb 
Tue afternoon. Its associated front moves across the Bering 
through Tue afternoon. Along the frontal axis, a 988 mb low 
develops south of the Aleutians Mon afternoon then moves to 58N 
164W Tue afternoon. An area of low pressure lingers over the 
central Bering between Mon night and Tue afternoon.

$$

PKZ411-181430-
Bering Sea Offshore West of 180 and East of the International
Dateline-
246 PM AKST Sun Jan 17 2021

...GALE WARNING THROUGH MONDAY...

.TONIGHT...SE wind 25 to 40 kt. Seas 9 to 17 ft. Freezing spray north
of 57N. Snow showers.
.MON...S wind 20 to 35 kt. Seas 13 to 19 ft. Freezing spray north of 57N.
.MON NIGHT...SW wind 10 to 25 kt. Seas 13 to 18 ft. Freezing spray
north of 57N.
.TUE...S wind 10 to 25 kt. Seas 14 to 18 ft.
.TUE NIGHT...SE wind 10 to 25 kt. Seas 12 to 17 ft.
.WED...N wind 25 to 40 kt. Seas 12 to 20 ft.
.THU...SW wind 10 to 25 kt. Seas 11 to 18 ft.
.FRI...SE wind 20 to 30 kt. Seas 11 to 19 ft.

$$

PKZ412-181430-
Bering Sea Offshore 171W to 180 and North of 56N-
246 PM AKST Sun Jan 17 2021

...GALE WARNING MONDAY NIGHT...

.TONIGHT...Variable wind up to 20 kt becoming SE 15 to 30 kt after 
midnight. Seas 5 to 9 ft. Freezing spray.
.MON...E wind 15 to 30 kt. Seas 8 to 16 ft. Freezing spray.
.MON NIGHT...SE wind 20 to 35 kt. Seas 10 to 17 ft. Freezing spray.
.TUE...S wind 20 to 35 kt. Seas 12 to 17 ft.
.TUE NIGHT...S wind 15 to 30 kt. Seas 11 to 14 ft.
.WED...E wind 30 to 45 kt. Seas 13 to 28 ft.
.THU...SW wind 20 to 35 kt. Seas 12 to 18 ft.
.FRI...S wind 20 to 30 kt. Seas 10 to 14 ft.

$$

PKZ413-181430-
Bering Sea Offshore 171W to 180 and South of 56N-
246 PM AKST Sun Jan 17 2021

...GALE WARNING TONIGHT...

.TONIGHT...S wind 20 to 35 kt. Seas 7 to 15 ft. Widespread snow 
showers.
.MON...S wind 15 to 30 kt. Seas 8 to 15 ft.
.MON NIGHT...SW wind 15 to 30 kt. Seas 9 to 13 ft.
.TUE...SW wind 25 kt. Seas 10 to 16 ft.
.TUE NIGHT...SE wind 30 to 45 kt. Seas 11 to 16 ft.
.WED...S wind 30 to 45 kt. Seas 14 to 28 ft.
.THU...SW wind 15 to 30 kt. Seas 9 to 14 ft.
.FRI...SE wind 20 to 35 kt. Seas 10 to 18 ft.

$$

PKZ414-181430-
Bering Sea Offshore East of 171W-
246 PM AKST Sun Jan 17 2021

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

.TONIGHT...NW wind 15 to 30 kt. Seas 6 to 11 ft. Heavy Freezing 
spray.
.MON...N wind 15 to 30 kt. Seas 3 to 8 ft. Heavy freezing spray.
.MON NIGHT...E wind 15 to 30 kt. Seas 4 to 9 ft. Heavy Freezing 
spray. Snow showers.
.TUE...NE wind 10 to 25 kt. Seas 5 to 10 ft.
.TUE NIGHT...S wind 15 to 30 kt. Seas 6 to 11 ft.
.WED...SE wind 25 to 40 kt. Seas 11 to 19 ft.
.THU...S wind 20 to 35 kt. Seas 9 to 17 ft.
.FRI...SW wind 10 to 20 kt. Seas 5 to 9 ft.

$$

082 
FZAK62 PAFC 181259
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
359 AM AKST Mon Jan 18 2021

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.

PKZ499-190145-
359 AM AKST Mon Jan 18 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 967 mb low at 54N 162E moves to 54N 170E at 974 mb Tue 
afternoon. Its associated front moves across the Bering through 
Tue afternoon. Along the frontal axis, a 990 mb low develops 
south of the Aleutians Mon afternoon then moves to 58N 164W Tue 
afternoon. An area of low pressure lingers over the Central 
Bering Mon night to Tue afternoon.

$$

PKZ411-190145-
Bering Sea Offshore West of 180 and East of the International
Dateline-
359 AM AKST Mon Jan 18 2021

...GALE WARNING TODAY...

.TODAY...S wind 20 to 35 kt. Seas 13 to 18 ft.
.TONIGHT...SW wind 10 to 25 kt. Seas 13 to 17 ft.
.TUE...S wind 15 to 30 kt. Seas 13 to 19 ft.
.TUE NIGHT...SE wind 10 to 25 kt. Seas 13 to 19 ft.
.WED...N wind 15 to 30 kt. Seas 11 to 19 ft.
.THU...W wind 10 to 20 kt. Seas 10 to 18 ft.
.FRI...S wind up to 15 kt. Seas 4 to 7 ft.

$$

PKZ412-190145-
Bering Sea Offshore 171W to 180 and North of 56N-
359 AM AKST Mon Jan 18 2021

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

.TODAY...SE wind 20 to 35 kt. Seas 8 to 13 ft. Freezing spray north 
of 58N and east of 174W.
.TONIGHT...SE wind 25 to 40 kt. Seas 10 to 17 ft. Heavy freezing spray
north of 58N and east of 174W. Snow showers.
.TUE...SW wind 15 to 30 kt becoming S 10 to 20 kt in the afternoon. 
Seas 11 to 17 ft. Freezing spray.
.TUE NIGHT...SE wind 15 to 30 kt. Seas 11 to 14 ft.
.WED...E wind 30 to 45 kt. Seas 16 to 24 ft.
.THU...SW wind 15 to 30 kt. Seas 12 to 20 ft.
.FRI...W wind 10 to 20 kt. Seas 4 to 9 ft.

$$

PKZ413-190145-
Bering Sea Offshore 171W to 180 and South of 56N-
359 AM AKST Mon Jan 18 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 20 to 35 kt. Seas 9 to 14 ft.
.TONIGHT...SW wind 20 to 35 kt diminishing to 15 to 25 kt after
midnight. Seas 10 to 13 ft.
.TUE...SW wind 15 to 25 kt. Seas 10 to 15 ft.
.TUE NIGHT...SE wind 25 to 40 kt. Seas 10 to 15 ft.
.WED THROUGH THU...SW wind 25 to 40 kt. Seas 13 to 21 ft.
.FRI...SW wind 10 to 20 kt. Seas 5 to 9 ft.

$$

PKZ414-190145-
Bering Sea Offshore East of 171W-
359 AM AKST Mon Jan 18 2021

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

.TODAY...N wind 15 to 30 kt. Seas 4 to 9 ft. Heavy freezing spray.
.TONIGHT...E wind 15 to 30 kt. Seas 5 to 10 ft. Heavy freezing 
spray.
.TUE...NE wind 15 to 30 kt. Seas 5 to 10 ft. Heavy freezing spray.
.TUE NIGHT...S wind 15 to 30 kt. Seas 6 to 11 ft.
.WED...S wind 35 to 50 kt. Seas 13 to 21 ft.
.THU...SE wind 15 to 30 kt. Seas 10 to 18 ft.
.FRI...W wind 10 to 25 kt. Seas 4 to 8 ft.

$$

027 
FZAK62 PAFC 190017
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
317 PM AKST Mon Jan 18 2021

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.

PKZ499-191445-
317 PM AKST Mon Jan 18 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 968 mb low at 53N 167E will move to 54N 169E at 971 mb Tue 
afternoon. Its associated front moves across the Bering through 
Tue afternoon. A 992 mb low developing south of the Aleutians will
move to 57N 165W at 991 mb Tue afternoon then weaken and move 
inland Wed morning. A 970 mb low at 49N 179W Tue night will move 
to 56N 174W at 968 mb Wed afternoon. 

$$

PKZ411-191445-
Bering Sea Offshore West of 180 and East of the International
Dateline-
317 PM AKST Mon Jan 18 2021

.TONIGHT...SW wind 10 to 25 kt. Seas 13 to 19 ft.
.TUE...S wind 15 to 30 kt. Seas 13 to 19 ft.
.TUE NIGHT...SE wind 10 to 25 kt. Seas 12 to 17 ft.
.WED...NE wind 15 to 30 kt. Seas 9 to 14 ft.
.WED NIGHT...W wind 10 to 25 kt. Seas 9 to 14 ft.
.THU...E wind up to 15 kt. Seas 9 to 14 ft.
.FRI THROUGH SAT...SE wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ412-191445-
Bering Sea Offshore 171W to 180 and North of 56N-
317 PM AKST Mon Jan 18 2021

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

.TONIGHT...SE wind 25 to 40 kt becoming SW 15 to 25 kt after midnight
south of 57N. Seas 10 to 17 ft. Heavy Freezing spray. Snow showers.
.TUE...S wind 15 to 30 kt diminishing to 10 to 20 kt in the
afternoon. Seas 11 to 16 ft. Heavy freezing spray.
.TUE NIGHT...S wind 10 to 20 kt becoming SE 15 to 30 kt after
midnight. Seas 10 to 14 ft. Snow.
.WED...E wind 30 to 45 kt. Seas 12 to 20 ft.
.WED NIGHT...NW wind 20 to 35 kt. Seas 14 to 20 ft.
.THU...SE wind 10 to 25 kt. Seas 9 to 14 ft.
.FRI...W wind 10 to 20 kt. Seas 4 to 9 ft.
.SAT...SE wind 15 to 25 kt. Seas 6 to 10 ft.

$$

PKZ413-191445-
Bering Sea Offshore 171W to 180 and South of 56N-
317 PM AKST Mon Jan 18 2021

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

.TONIGHT...SW wind 20 to 35 kt. Seas 10 to 15 ft.
.TUE...SW wind 15 to 25 kt. Seas 10 to 15 ft.
.TUE NIGHT...S wind 15 to 25 kt becoming E 25 to 40 kt after
midnight. Seas 9 to 16 ft. Snow.
.WED...E wind 30 to 45 kt. Seas 13 to 20 ft.
.WED NIGHT...SW wind 30 to 45 kt. Seas 13 to 21 ft.
.THU...E wind 15 to 30 kt. Seas 8 to 13 ft.
.FRI...SW wind 10 to 20 kt. Seas 5 to 9 ft.
.SAT...S wind 25 kt. Seas 8 to 13 ft.

$$

PKZ414-191445-
Bering Sea Offshore East of 171W-
317 PM AKST Mon Jan 18 2021

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

.TONIGHT...E wind 15 to 30 kt. Seas 4 to 11 ft. Heavy Freezing 
spray.
.TUE...E wind 15 to 30 kt becoming NW late. Seas 5 to 10 ft. Heavy 
freezing spray.
.TUE NIGHT...W wind 10 to 25 kt becoming SE 15 to 30 kt after
midnight. Seas 5 to 11 ft.
.WED...SE wind 35 to 50 kt. Seas 12 to 20 ft.
.WED NIGHT...S wind 35 to 50 kt. Seas 15 to 30 ft.
.THU...E wind 10 to 25 kt. Seas 8 to 16 ft.
.FRI...W wind 10 to 25 kt. Seas 4 to 8 ft.
.SAT...S wind 15 to 25 kt. Seas 4 to 9 ft.

$$

294 
FZAK62 PAFC 191247
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
347 AM AKST Tue Jan 19 2021

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.

PKZ499-200200-
347 AM AKST Tue Jan 19 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 989 mb low at 54N 167W moves to 58N 163E at 995 mb Tue night 
and dissipates as it moves inland Wed morning. A 972 mb low at 54N
168E moves to 55N 175E at 987 mb by Thu evening. Its front 
crosses the eastern Bering through Tue evening. A North Pacific 
low moves to 49N 178W at 973 mb Tue night and crosses the central 
Bering to 61N 173W at 978 mb by Thu morning.


$$

PKZ411-200200-
Bering Sea Offshore West of 180 and East of the International
Dateline-
347 AM AKST Tue Jan 19 2021

.TODAY...S wind 15 to 30 kt. Seas 13 to 18 ft.
.TONIGHT...SE wind 15 to 30 kt. Seas 12 to 17 ft.
.WED...SE wind 10 to 25 kt becoming N in the afternoon. Seas 10 to
15 ft.
.WED NIGHT...NW wind up to 20 kt. Seas 10 to 14 ft.
.THU THROUGH FRI...NE wind up to 20 kt. Seas 6 to 11 ft.
.SAT...E wind 20 to 35 kt. Seas 9 to 14 ft.

$$

PKZ412-200200-
Bering Sea Offshore 171W to 180 and North of 56N-
347 AM AKST Tue Jan 19 2021

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

.TODAY...S wind 20 to 35 kt diminishing to 10 to 25 kt in the
afternoon. Seas 11 to 17 ft. Heavy freezing spray north of 58N and
east of 174W.
.TONIGHT...SE wind 10 to 25 kt. Seas 10 to 14 ft. Freezing spray.
.WED...E wind 25 to 40 kt. Seas 11 to 18 ft. Snow.
.WED NIGHT...NW wind 15 to 30 kt. Seas 12 to 18 ft.
.THU...E wind 15 to 30 kt. Seas 8 to 13 ft.
.FRI...N wind 15 to 30 kt. Seas 7 to 11 ft.
.SAT...SE wind 15 to 30 kt. Seas 6 to 10 ft.

$$

PKZ413-200200-
Bering Sea Offshore 171W to 180 and South of 56N-
347 AM AKST Tue Jan 19 2021

...GALE WARNING TONIGHT AND WEDNESDAY...

.TODAY...SW wind 15 to 25 kt. Seas 9 to 13 ft.
.TONIGHT...S wind 10 to 20 kt becoming E 20 to 35 kt after
midnight. Seas 9 to 14 ft. Snow.
.WED...E wind 25 to 40 kt becoming W in the afternoon. Seas 12 to
18 ft. Snow and rain.
.WED NIGHT...W wind 30 to 45 kt. Seas 12 to 20 ft.
.THU...E wind 10 to 25 kt. Seas 8 to 12 ft.
.FRI...NW wind 10 to 25 kt. Seas 8 to 11 ft.
.SAT...SE wind 15 to 30 kt. Seas 7 to 10 ft.

$$

PKZ414-200200-
Bering Sea Offshore East of 171W-
347 AM AKST Tue Jan 19 2021

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

.TODAY...NE wind 15 to 30 kt. Seas 6 to 11 ft. Heavy freezing
spray north of 57N.
.TONIGHT...NW wind 10 to 25 kt becoming SE after midnight. Seas 6
to 10 ft. Freezing spray.
.WED...SE wind 30 to 45 kt. Seas 8 to 13 ft building to 11 to 19 ft 
in the afternoon. Heavy freezing spray. Snow.
.WED NIGHT...S wind 35 to 50 kt. Seas 14 to 27 ft.
.THU...E wind 15 to 30 kt. Seas 8 to 13 ft.
.FRI...S wind 15 to 30 kt. Seas 7 to 12 ft.
.SAT...W wind 10 to 25 kt. Seas 8 to 13 ft.

$$

702 
FZAK62 PAFC 200042
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
342 PM AKST Tue Jan 19 2021

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.

PKZ499-201400-
342 PM AKST Tue Jan 19 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 990 mb low at 57N 166W will move to 58N 163W tonight then 
weaken and move inland Wed morning. A 972 mb low at 55N 170E will 
move to 55N 174E at 987 mb Wed night. Its associated front moves 
across the eastern Bering through tonight. A 973 mb low at 46N 
179E will move to 64N 173W at 988 mb Thu afternoon.

$$

PKZ411-201400-
Bering Sea Offshore West of 180 and East of the International
Dateline-
342 PM AKST Tue Jan 19 2021

.TONIGHT...S wind 10 to 25 kt. Seas 12 to 17 ft.
.WED...S wind 10 to 25 kt becoming NW in the afternoon. Seas 10 to
14 ft.
.WED NIGHT...NW wind 10 to 20 kt. Seas 10 to 14 ft.
.THU...NE wind up to 15 kt. Seas 8 to 12 ft.
.THU NIGHT...NE wind up to 20 kt. Seas 8 ft.
.FRI...NE wind up to 20 kt. Seas 6 to 9 ft.
.SAT THROUGH SUN...SE wind 20 to 35 kt. Seas 10 to 18 ft.

$$

PKZ412-201400-
Bering Sea Offshore 171W to 180 and North of 56N-
342 PM AKST Tue Jan 19 2021

...GALE WARNING WEDNESDAY...

.TONIGHT...SE wind 10 to 25 kt. Seas 10 to 13 ft. Freezing spray.
.WED...E wind 25 to 40 kt. Seas 11 to 17 ft. Snow.
.WED NIGHT...N wind 15 to 30 kt becoming W 10 to 25 kt after
midnight. Seas 12 to 17 ft.
.THU...S wind up to 20 kt. Seas 9 to 14 ft.
.THU NIGHT...E wind 10 to 25 kt. Seas 8 ft.
.FRI...NE wind 15 to 30 kt. Seas 7 to 11 ft.
.SAT THROUGH SUN...SE wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ413-201400-
Bering Sea Offshore 171W to 180 and South of 56N-
342 PM AKST Tue Jan 19 2021

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...S wind 10 to 20 kt becoming E 20 to 35 kt after
midnight. Seas 10 to 14 ft. Snow.
.WED...E wind 25 to 40 kt becoming W in the afternoon. Seas 12 to
18 ft. Snow and rain.
.WED NIGHT...W wind 30 to 45 kt becoming SW 10 to 25 kt after
midnight. Seas 11 to 19 ft.
.THU...SE wind 10 to 25 kt. Seas 7 to 12 ft.
.THU NIGHT...NE wind 15 to 25 kt. Seas 7 to 11 ft.
.FRI...NW wind 10 to 25 kt. Seas 6 to 10 ft.
.SAT THROUGH SUN...S wind 15 to 30 kt. Seas 9 to 14 ft.

$$

PKZ414-201400-
Bering Sea Offshore East of 171W-
342 PM AKST Tue Jan 19 2021

...STORM WARNING WEDNESDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING WEDNESDAY...

.TONIGHT...NW wind 10 to 25 kt becoming SE after midnight. Seas 6
to 10 ft. Freezing spray.
.WED...E wind 20 to 35 kt becoming SE 30 to 45 kt in the
afternoon. Seas 8 to 13 ft building to 11 to 19 ft in the afternoon.
Heavy freezing spray. Snow.
.WED NIGHT...SW wind 35 to 50 kt. Seas 13 to 27 ft.
.THU...SE wind 10 to 25 kt. Seas 8 to 16 ft.
.THU NIGHT...E wind 10 to 25 kt. Seas 4 to 9 ft.
.FRI...S wind 10 to 25 kt. Seas 7 to 12 ft.
.SAT...W wind 10 to 25 kt. Seas 8 to 13 ft.
.SUN...SE wind 20 to 30 kt. Seas 7 to 12 ft.

$$

520 
FZAK62 PAFC 201301
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
401 AM AKST Wed Jan 20 2021

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.

PKZ499-210200-
401 AM AKST Wed Jan 20 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 970 mb low at 51N 177W will move to 64N 174W at 977 mb by Thu
morning as it exits into the northern Bering. Its front crosses
the Eastern Aleutians and Alaska Peninsula through Thu morning. A
977 mb low at 55N 170E moves to 55N 174E at 988 mb Thu morning 
before weakening. A low with multiple centers moves to 48N 178W at
980 mb Thu afternoon then to 53N 173W by Fri morning.

$$

PKZ411-210200-
Bering Sea Offshore West of 180 and East of the International
Dateline-
401 AM AKST Wed Jan 20 2021

.TODAY...SE wind 10 to 25 kt becoming NE in the afternoon. Seas 9
to 13 ft.
.TONIGHT...NW wind 10 to 20 kt. Seas 9 to 13 ft.
.THU...E wind up to 15 kt. Seas 11 ft.
.THU NIGHT...NE wind up to 20 kt. Seas 7 to 10 ft.
.FRI...NE wind up to 20 kt. Seas 6 to 10 ft.
.SAT...E wind 20 to 35 kt. Seas 8 to 13 ft.
.SUN...S wind 15 to 30 kt. Seas 10 to 17 ft.

$$

PKZ412-210200-
Bering Sea Offshore 171W to 180 and North of 56N-
401 AM AKST Wed Jan 20 2021

...GALE WARNING TODAY...

.TODAY...E wind 25 to 40 kt. Seas 11 to 17 ft.
.TONIGHT...N wind 15 to 30 kt becoming W after midnight. Seas 12
to 17 ft.
.THU...SW wind 10 to 25 kt becoming SE up to 15 kt in the
afternoon. Seas 9 to 14 ft.
.THU NIGHT...E wind 10 to 25 kt. Seas 8 ft.
.FRI...N wind 15 to 30 kt. Seas 8 to 12 ft.
.SAT THROUGH SUN...SE wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ413-210200-
Bering Sea Offshore 171W to 180 and South of 56N-
401 AM AKST Wed Jan 20 2021

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 25 to 40 kt becoming NW 20 to 35 kt in the
afternoon. Seas 13 to 18 ft. Snow.
.TONIGHT...W wind 25 to 40 kt becoming SW 10 to 25 kt after
midnight. Seas 10 to 18 ft.
.THU...SE wind 10 to 20 kt. Seas 8 to 11 ft.
.THU NIGHT...NE wind 10 to 25 kt. Seas 7 to 10 ft.
.FRI...W wind 15 to 30 kt. Seas 8 to 13 ft.
.SAT THROUGH SUN...S wind 15 to 30 kt. Seas 9 to 17 ft.

$$

PKZ414-210200-
Bering Sea Offshore East of 171W-
401 AM AKST Wed Jan 20 2021

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

.TODAY...SE wind 30 to 45 kt. Seas 7 to 12 ft building to 10 to
18 ft in the afternoon. Heavy freezing spray.
.TONIGHT...S wind 30 to 45 kt. Seas 15 to 23 ft.
.THU...S wind 10 to 25 kt becoming SE up to 15 kt in the
afternoon. Seas 8 to 16 ft.
.THU NIGHT...SE wind 15 to 30 kt. Seas 8 to 13 ft.
.FRI...S wind 15 to 30 kt. Seas 9 to 14 ft.
.SAT...SW wind 15 to 30 kt. Seas 8 to 16 ft.
.SUN...SE wind 20 kt. Seas 5 to 9 ft.

$$

077 
FZAK62 PAFC 210050
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
350 PM AKST Wed Jan 20 2021

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.

PKZ499-211400-
350 PM AKST Wed Jan 20 2021
.SYNOPSIS FOR CENTRAL BERING SEA...

A 970 mb low at 55N 174W will exit through the Gulf of Anadyr at 
998 mb Fri morning. Its front moves into Western Alaska Thu 
afternoon. A 970 mb North Pacific low moves to 55N 174W at 989 mb 
Fri afternoon. Its front moves over the Aleutians Thu afternoon 
into the Northern Bering by Fri afternoon.

$$

PKZ411-211400-
Bering Sea Offshore West of 180 and East of the International
Dateline-
350 PM AKST Wed Jan 20 2021

.TONIGHT...NW wind 10 to 20 kt. Seas 9 to 14 ft.
.THU...E wind up to 10 kt. Seas 11 ft.
.THU NIGHT...NE wind 10 to 20 kt. Seas 9 ft.
.FRI...NE wind up to 20 kt. Seas 8 ft.
.FRI NIGHT...S wind up to 20 kt. Seas 6 to 10 ft.
.SAT...E wind 15 to 30 kt. Seas 8 to 13 ft.
.SUN THROUGH MON...S wind 15 to 30 kt. Seas 9 to 17 ft.

$$

PKZ412-211400-
Bering Sea Offshore 171W to 180 and North of 56N-
350 PM AKST Wed Jan 20 2021

.TONIGHT...N wind 15 to 30 kt becoming W after midnight. Seas 12
to 17 ft.
.THU...SW wind 10 to 25 kt becoming S up to 15 kt in the
afternoon. Seas 9 to 14 ft.
.THU NIGHT...E wind up to 20 kt becoming NE 15 to 25 kt after
midnight. Seas 8 ft.
.FRI...NE wind 15 to 30 kt. Seas 8 to 12 ft.
.FRI NIGHT...NW wind 10 to 25 kt. Seas 8 to 12 ft.
.SAT...E wind 15 to 30 kt. Seas 8 to 12 ft.
.SUN...SE wind 25 kt. Seas 8 to 13 ft.
.MON...SW wind 10 to 20 kt. Seas 9 to 14 ft.

$$

PKZ413-211400-
Bering Sea Offshore 171W to 180 and South of 56N-
350 PM AKST Wed Jan 20 2021

...GALE WARNING TONIGHT...

.TONIGHT...W wind 25 to 40 kt becoming SW 10 to 25 kt after
midnight. Seas 10 to 18 ft.
.THU...E wind 10 to 20 kt. Seas 8 to 11 ft.
.THU NIGHT...NE wind 10 to 25 kt. Seas 9 ft. Rain showers.
.FRI...NW wind 10 to 25 kt. Seas 6 to 9 ft.
.FRI NIGHT...W wind 10 to 25 kt. Seas 9 to 14 ft.
.SAT THROUGH SUN...S wind 15 to 30 kt. Seas 9 to 17 ft.
.MON...SW wind 15 to 25 kt. Seas 10 to 15 ft.

$$

PKZ414-211400-
Bering Sea Offshore East of 171W-
350 PM AKST Wed Jan 20 2021

...GALE WARNING TONIGHT...

.TONIGHT...S wind 30 to 45 kt. Seas 15 to 23 ft.
.THU...S wind 10 to 25 kt becoming SE up to 15 kt in the
afternoon. Seas 8 to 16 ft.
.THU NIGHT...E wind 10 to 25 kt becoming SE 20 to 30 kt after
midnight. Seas 7 ft building to 8 to 13 ft after midnight.
.FRI...SE wind 15 to 30 kt. Seas 8 to 13 ft.
.FRI NIGHT...SW wind 15 to 30 kt. Seas 9 to 14 ft.
.SAT...SW wind 15 to 30 kt. Seas 8 to 16 ft.
.SUN...SE wind 20 kt. Seas 5 to 9 ft.
.MON...W wind 10 to 25 kt. Seas 8 to 13 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
432 PM AKST Fri Jan 15 2021

.ANALYSIS AND UPPER LEVELS...
The long-wave trough remains firmly entrenched over Alaska and the
North Pacific, with a zonal jet stream centered way down around
35N latitude. A persistent downstream ridge sits over the far east
Pacific and into the western CONUS, leading to a northward buckle
in the jet. Thus, the primary storm track is west to east across
the North Pacific, then curving northward into the Gulf and toward
the southern mainland of Alaska. This has been and will continue
to be the pattern in place through at least early next week.

Conditions are relatively quiet across the Alaska region today.
A broad short-wave trough with multiple embedded weak vorticity
maxima is lifting northward across Southcentral, with areas of
light snow spreading inland. It took a long time to saturate low
level airmass in the Anchorage area, but light snow started to
fall across the area by late morning. Still, snow is very light
in nature and expect little to no accumulation. Meanwhile, with
more unstable air over the Gulf, showers continue to stream
onshore along the north Gulf coast and Prince William Sound.
Precipitation type is mostly snow with the exception of the
immediate coastline where it is still warm enough for rain.

Out west, a short-wave trough over the central Bering is bringing
snow showers and gusty winds to the Pribilof Islands southward
to the central Aleutians (around Atka). Otherwise, dry conditions
prevail under short-wave ridging along the remainder of the
Aleutians, Alaska Peninsula, and Southwest Alaska. Areas of low
clouds and fog have formed over the eastern Bering Sea and some
of this is pushing onshore in the Bristol Bay region.

&&

.MODEL DISCUSSION...
Models remain in overall good agreement with the next large storm
system moving up from the north Pacific into the Gulf and along
the Alaska Peninsula. It does look favorable for multiple low
centers as short-waves rotate around the very large cyclonic
circulation. Models do vary with the details of these centers.
In particular, the GFS shows a stronger low backing westward
across the Bristol Bay and into the eastern Bering Saturday night
and Sunday. If this were to verify, it would lead to stronger
northerly flow across the eastern Bering and southern Alaska
Peninsula and lower visibilities in snow and blowing snow.
However, this solution is an outlier at this point so will stick
with the other models which show a weaker farther east low and
overall lighter wind field.

Out west, models are in excellent agreement and show good run-to-
run consistency with frontal system crossing the Aleutian Islands
Sunday night into Monday.

Looking to early next week, models are all keying in on
amplification of the upper level flow and a powerful low tracking
into the Gulf. There certainly is some spread in solutions with
timing and track, but confidence is enough to begin to reflect
significant weather in the forecast and start to message specific
impacts to key partners/decision-makers.

&&

.AVIATION...
PANC...VFR conditions and light winds will persist through this
evening. With skies clearing behind the short-wave pushing
onshore, will need to keep an eye out for fog formation. However,
as the next Pacific storm enters the Gulf tonight, expect
northerly surface winds to develop and strengthen through
Saturday morning. This, if any fog did form in the vicinity it
should be patchy and short-lived.

As the northerly flow strengthens at the surface, mountain-top
southeasterly winds will increase across the Kenai and Chugach
Mountains. Thus, expect low level wind shear to develop overnight.
As the storm nears, cross-mountain flow will become more easterly
and will bend sharply down Cook Inlet. As a result, wind shear
may push above 2000 feet during the day Saturday.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through
3/Tonight through Monday)...

The upper level trough that brought some light snow to
Southcentral today continues to lift north with a weak upper level
ridge building in. As a result, most of the Kenai Peninsula has
cleared out and has been observing a decent amount of sunshine.
There is some question as to how far north this clearing will get
tonight making tonight's low temperature forecast a bit tricky. If
it can stay clear with light winds, temperatures will drop a
decent amount. There is some low stratus hanging around out over
Cook Inlet as of this writing that if this can congeal may move
into Anchorage, Kenai, and the Matanuska Valley overnight which
would keep temperatures up instead of dropping.

The next frontal system can be seen on visible satellite imagery
this afternoon over the North Pacific. This system will continue
moving northward reaching Kodiak around midnight tonight. Expect
periods of rain and gusty winds up to 50 mph out of the northeast
accompanying the front as it passes through. This front will
continue to move northward bringing storm force winds to the
central Gulf and along the Gulf Coast waters. This front will also
bring another round of rain and snow to the higher elevations
around Prince William Sound. Areas closer to sea level can expect
more rain with some snow but the higher elevations will be where
the heavier snowfall amounts will be as that will be where it
stays cold enough to keep it mostly snow. Turnagain Pass is one
of the areas that looks to remain cold enough again this time
around for mostly snow with up to 6 inches through the Pass.
Higher elevations around the Pass may see upwards of a foot or
more. Seward will have some snow to start but warmer air is
expected to move in Saturday afternoon changing any snow to all
rain. Areas around Anchorage, Kenai Peninsula, and the Matanuska
Valley are expected to remain dry through at least Saturday
evening before chances of precipitation increase some. Any
precipitation will be light and minor.

With deep southerly flow continuing Saturday night into Sunday
expect precipitation to continue against the windward slopes of
the mountains as upslope flow continues.

Attention will then turn to the next very potent system that is
expected to impact the region Sunday night through Monday night
time frame. During this period, there is the potential for high
winds through Portage Valley and Turnagain Arm, high winds over
the marine areas along the north Gulf Coast, heavy snowfall for
Turnagain Pass, Alyeska, and Thompson Pass. Due to the heavy
snowfall possible and high winds along with an already very deep
snowpack, the potential is there for avalanches as more snow falls
on the already deep snowpack. Due to this, multiple products are
possible for this event as this has the potential to be very
impactful across Southcentral. Stay tuned.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3: Friday
Afternoon through Monday)...

Relatively calm today across Southwest Alaska as the upper level
trough pushes north and east of the area. A brief period of
onshore flow tonight will promote the formation of low clouds and
patchy fog, best chances of fog will be across the Kuskokwim Delta
tonight. The fog will clear out by midday tomorrow as stronger
winds kick in ahead of next low pressure system. Otherwise a few
light snow flurries possible tonight underneath low clouds but no
accumulations expected. Our attention then turns to a stronger low
pressure system approaching the AKPEN on Saturday this will bring
gusty winds to the Southwest and increasing chances of snow. This
low will cross into Bristol Bay Saturday evening and slowly track
into Southwest Alaska Sunday producing snow across the area with
a couple of inches possible. This low will weaken and move across
the Kuskokwim Delta on Monday with continued light snow ending
later on Monday with another inch or two of snow possible.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3: Friday
Afternoon through Monday)...

Broad upper level troughing continues to dominate the Bering Sea
and Aleutians. The remnants of the upper low across Southwest
Alaska is moving across the northern Bering producing light snow.
Otherwise weak shortwaves are moving across the area with snow
showers and low level northerly flow dominating the area tonight
and tomorrow. Saturday into Sunday the low moving into Bristol Bay
will bring snow and blowing snow to parts of zones 181 and 185
from Dutch Harbor, Cold Bay up towards the AKPEN. The upper
forcing will not be strong enough to warrant a blowing snow
advisory but several inches of snow expected, however less than
advisory criteria. Sunday a gale force front will move into the
Western Aleutians and move east into the central and eastern
Aleutians and up towards the Pribilofs on Monday. This front will
bring light snow and brief periods of blowing snow.

&&

.MARINE (Days 3 through 5): Monday through Wednesday...

Gulf of Alaska: A strong North Pacific low moves over Kodiak
Island into the Alaska Peninsula on Monday with an estimated
intensity of 970 mb. Model tracks and development vary somewhat,
but forecast confidence is good. Widespread high end gale force
winds and storm force winds move northward over the Gulf. Monday
night the surface low will move over the Kenai Peninsula although
the cyclonic flow will persisted over the Gulf Of Alaska until
Tuesday. Brief ridging will follow in the wake of the low.

Aleutians/Bering: A strong Kamchatka low and front moves east
through Tuesday. Widespread high end gale force winds anticipated
with this system as the front moves to the Central Aleutians and
across the Bering. Enhanced seas expected with this system as wave
heights are forecast to reach 19 feet for the Bering side, and
the Pacific side. A new low will develop in the NW Pacific on
Monday and will stay south of the chain.

&&

.LONG TERM FORECAST (Days 3 through 7): Monday through
Thursday...

A progressive pattern is on tap for this forecast period. The
longwave trough extends from NE Russia to Southcentral Alaska and
the Gulf Of Alaska. There are numerous embedded shortwaves.
Expect a series of lows for the Bering, North Pacific and Gulf Of
Alaska. Monday there will be surface low near Kodiak and a second
low northeast of Attu Island. The jet stream is highly amplified.
There is a jet core south of Kodiak with a magnitude of 155 knots
and a second jet core with a magnitude of 170 knots south of
Amchitka/Adak. Sensible weather-wise, expect snow in portions of
southcentral Alaska. The Chugach Mountains, Kenai Mountains and
Cordova Mountains will receive 2+ feet of new snow in a 24 hr
window. As this low complex moves north additional snow
accumulations anticipated. Right now the snow level is hovering
between 800-1500 feet above sea level. Also on Tuesday the front
out west will be near Cold Bay. Past Wednesday, divergence has
emerged in the models but they are all showing a continuation of
the wet pattern.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Storms 119 120 130 13. Gales 132 138 139 140 150 155 165
170-176 180 352 413 414.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...SEB
SOUTHCENTRAL ALASKA...MV
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...RC
MARINE/LONG TERM...PS