Small Craft Advisory 623, NWS Juneau, AK

118 
FZAK51 PAJK 140708 CCA
CWFAJK

Coastal Waters Forecast for Southeast Alaska...UPDATED
National Weather Service Juneau AK
655 PM AKST Mon Dec 13 2021

Southeast Alaska Inside Waters from Dixon Entrance to Skagway

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ098-141515-
655 PM AKST Mon Dec 13 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A surface ridge over the western Gulf will shift east as a
developing low over the Alaskan Peninsula tracks southeast
through Tuesday night while remaining south of the Panhandle. 

$$

PKZ011-141515-
Glacier Bay-
1010 PM AKST Mon Dec 13 2021

UPDATED

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.REST OF TONIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft.
Freezing spray. 
.TUE...N wind 25 kt diminishing to 15 kt in the afternoon. Seas 5
ft subsiding to 3 ft in the afternoon. Freezing spray.
.TUE NIGHT...N wind 15 kt. Seas 3 ft. Freezing spray. 
.WED...N wind 20 kt. Seas 4 ft. Freezing spray. 
.WED NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.THU...N wind 15 kt. Seas 3 ft. 
.FRI...N wind 15 kt. Seas 3 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 



$$

PKZ012-141515-
Northern Lynn Canal-
1010 PM AKST Mon Dec 13 2021

UPDATED

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.REST OF TONIGHT...N wind 30 kt. Seas 6 ft. Freezing spray. 
.TUE...N wind 25 kt. Seas 6 ft. Freezing spray. 
.TUE NIGHT...N wind 25 kt. Seas 9 ft. Freezing spray. 
.WED...N gale to 40 kt. Seas 6 ft. Freezing spray. 
.WED NIGHT...N wind 30 kt. Seas 6 ft. Freezing spray. 
.THU...N wind 25 kt diminishing to 15 kt. Seas 5 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...N wind 20 kt. Seas 4 ft. 



$$

PKZ013-141515-
Southern Lynn Canal-
1010 PM AKST Mon Dec 13 2021

UPDATED

...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

.REST OF TONIGHT...NW wind 25 kt. Gusts to 40 kt. Seas 7 ft. 
Freezing spray. 
.TUE...N wind 20 kt. Seas 9 ft. Freezing spray. 
.TUE NIGHT...N wind 15 kt. Seas 8 ft. Freezing spray in the
evening. 
.WED...N wind 30 kt. Seas 6 ft. 
.WED NIGHT...N wind 25 kt. Seas 5 ft. Freezing spray. 
.THU...NE wind 20 kt. Seas 4 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...NE wind 15 kt. Seas 3 ft. 



$$

PKZ021-141515-
Icy Strait-
1010 PM AKST Mon Dec 13 2021

...SMALL CRAFT ADVISORY THROUGH THIS EVENING...

.TONIGHT...E wind 30 kt diminishing to 20 kt late. Seas 6 ft.
Strongest winds and highest seas near Couverden. Freezing spray. 
.TUE...E wind 20 kt. Seas 4 ft. 
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...NE wind 15 kt. Seas 3 ft. 
.WED NIGHT...NE wind 15 kt. Seas 3 ft. 
.THU...E wind 15 kt. Seas 3 ft. 
.FRI...E wind 20 kt becoming N 10 kt. Seas 4 ft. 
.SAT...E wind 15 kt. Seas 3 ft. 



$$

PKZ022-141515-
Cross Sound-
1010 PM AKST Mon Dec 13 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...E wind 25 kt. Seas 6 ft. 
.TUE...E wind 25 kt. Seas 5 ft. Freezing spray in the
morning. 
.TUE NIGHT...E wind 20 kt. Seas 4 ft. 
.WED...NE wind 15 kt. Seas 5 ft. 
.WED NIGHT...NE wind 20 kt. Seas 6 ft. 
.THU...E wind 20 kt. Seas 5 ft. 
.FRI...NE wind 20 kt. Seas 6 ft. 
.SAT...NE wind 15 kt. Seas 7 ft. 



$$

PKZ031-141515-
Stephens Passage-
1010 PM AKST Mon Dec 13 2021


...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

.TONIGHT...N wind 30 kt. Higher gusts out of interior passes. 
Seas 6 ft. Freezing spray. 
.TUE...N wind 20 kt. Higher gusts out of interior passes. Seas 5 ft. 
Freezing spray. 
.TUE NIGHT...N wind 25 kt. Higher gusts out of interior passes. 
Seas 5 ft. Freezing spray.
.WED...N wind 20 kt. Seas 4 ft. Freezing spray. 
.WED NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.THU...N wind 15 kt becoming SE 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt becoming N. Seas 4 ft. 
.SAT...N wind 15 kt becoming SE. Seas 3 ft. 



$$

PKZ032-141515-
Northern Chatham Strait-
1010 PM AKST Mon Dec 13 2021

UPDATED

.REST OF TONIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.TUE...N wind 20 kt. Seas 9 ft. Freezing spray. 
.TUE NIGHT...N wind 10 kt. Seas 8 ft. 
.WED...N wind 25 kt. Seas 3 ft. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...NE wind 15 kt becoming SE 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt becoming N. Seas 4 ft. 
.SAT...N wind 10 kt becoming SE 15 kt. Seas building to 3 ft. 



$$

PKZ033-141515-
Southern Chatham Strait-
1010 PM AKST Mon Dec 13 2021

UPDATED

.REST OF TONIGHT...N wind 15 kt. Seas 4 ft, except 7 ft near
ocean entrances. 
.TUE...NE wind 15 kt. Seas 3 ft, except 6 ft near ocean
entrances. 
.TUE NIGHT...N wind 15 kt. Seas 3 ft. 
.WED...N wind 10 kt. Seas 4 ft. 
.WED NIGHT...N wind 10 kt. Seas 4 ft. 
.THU...NE wind 10 kt becoming SE 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt becoming N 15 kt. Seas 5 ft. 
.SAT...N wind 10 kt. Seas 2 ft or less. 



$$

PKZ034-141515-
Frederick Sound-
1010 PM AKST Mon Dec 13 2021


.TONIGHT...NE wind 20 kt. Gusts to 45 kt out of interior passes. 
Seas 4 ft. Freezing spray. 
.TUE...NE wind 15 kt. Gusts to 45 kt out of interior passes. Seas
3 ft. Freezing spray in the morning. 
.TUE NIGHT...NE wind 15 kt. Gusts to 40 kt out of interior 
passes. Seas 3 ft. 
.WED...NE wind 12 kt. Seas 3 ft. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...NE wind 15 kt becoming E 20 kt. Seas 4 ft. 
.FRI...E wind 20 kt becoming N 10 kt. Seas 4 ft. 
.SAT...N wind 10 kt becoming E. Seas 2 ft or less. 



$$

PKZ035-141515-
Sumner Strait-
1010 PM AKST Mon Dec 13 2021

.TONIGHT...NE wind 20 kt. Gusts to 45 kt out of interior passes. 
Seas 4 ft, except 6 ft near ocean entrances. Freezing spray.
.TUE...E wind 20 kt. Gusts to 45 kt out of interior passes. Seas 
4 ft. Freezing spray in the morning. 
.TUE NIGHT...E wind 15 kt. Gusts to 40 kt out of interior
passes. Seas 3 ft. 
.WED...NE wind 10 kt. Seas 2 ft or less, except 5 ft near
ocean entrances. 
.WED NIGHT...NE wind 10 kt. Seas 2 ft or less. 
.THU...E wind 15 kt. Seas 3 ft. 
.FRI...E wind 20 kt. Seas 4 ft. 
.SAT...N wind 10 kt becoming E 15 kt. Seas building to 3 ft. 



$$

PKZ036-141515-
Clarence Strait-
1010 PM AKST Mon Dec 13 2021

.TONIGHT...N wind 15 kt. Gusts to 40 kt out of interior passes.
Seas 3 ft, except 6 ft near ocean entrances. 
.TUE...N wind 15 kt. Gusts to 40 kt out of interior passes.
Seas 3 ft. 
.TUE NIGHT...N wind 15 kt. Gusts to 35 kt out of interior
passes. Seas 3 ft. 
.WED...N wind 15 kt. Seas 3 ft. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...N wind 15 kt becoming SE 25 kt. Seas building to 5 ft. 
.FRI...SE wind 25 kt becoming N 15 kt. Seas 6 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 



$$

401 
FZAK51 PAJK 141017
CWFAJK

Coastal Waters Forecast for Southeast Alaska...UPDATED
National Weather Service Juneau AK
117 AM AKST Tue Dec 14 2021

Southeast Alaska Inside Waters from Dixon Entrance to Skagway

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ098-151030-
117 AM AKST Tue Dec 14 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A surface ridge over the western Gulf will shift east as a
developing low over the Alaskan Peninsula tracks southeast
through Tuesday night while remaining south of the Panhandle. 

$$

PKZ011-151030-
Glacier Bay-
117 AM AKST Tue Dec 14 2021

UPDATED

.REST OF TONIGHT...N wind 10 kt. Seas 2 ft or less. Freezing 
spray.
.TUE...N wind 15 kt. Seas 3 ft. Freezing spray.
.TUE NIGHT...N wind 15 kt. Seas 3 ft. Freezing spray. 
.WED...N wind 20 kt. Seas 4 ft. Freezing spray. 
.WED NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.THU...N wind 15 kt. Seas 3 ft. 
.FRI...N wind 15 kt. Seas 3 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 



$$

PKZ012-151030-
Northern Lynn Canal-
117 AM AKST Tue Dec 14 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.REST OF TONIGHT...N wind 30 kt. Seas 6 ft. Freezing spray. 
.TUE...N wind 25 kt. Seas 6 ft. Freezing spray. 
.TUE NIGHT...N wind 25 kt. Seas 9 ft. Freezing spray. 
.WED...N gale to 40 kt. Seas 6 ft. Freezing spray. 
.WED NIGHT...N wind 30 kt. Seas 6 ft. Freezing spray. 
.THU...N wind 25 kt diminishing to 15 kt. Seas 5 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...N wind 20 kt. Seas 4 ft. 



$$

PKZ013-151030-
Southern Lynn Canal-
117 AM AKST Tue Dec 14 2021

...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

.REST OF TONIGHT...NW wind 25 kt. Gusts to 40 kt. Seas 7 ft. 
Freezing spray. 
.TUE...N wind 20 kt. Seas 9 ft. Freezing spray. 
.TUE NIGHT...N wind 15 kt. Seas 8 ft. Freezing spray in the
evening. 
.WED...N wind 30 kt. Seas 6 ft. 
.WED NIGHT...N wind 25 kt. Seas 5 ft. Freezing spray. 
.THU...NE wind 20 kt. Seas 4 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...NE wind 15 kt. Seas 3 ft. 



$$

PKZ021-151030-
Icy Strait-
117 AM AKST Tue Dec 14 2021

...SMALL CRAFT ADVISORY THROUGH THIS EVENING...

.TONIGHT...E wind 30 kt diminishing to 20 kt late. Seas 6 ft.
Strongest winds and highest seas near Couverden. Freezing spray. 
.TUE...E wind 20 kt. Seas 4 ft. 
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...NE wind 15 kt. Seas 3 ft. 
.WED NIGHT...NE wind 15 kt. Seas 3 ft. 
.THU...E wind 15 kt. Seas 3 ft. 
.FRI...E wind 20 kt becoming N 10 kt. Seas 4 ft. 
.SAT...E wind 15 kt. Seas 3 ft. 



$$

PKZ022-151030-
Cross Sound-
117 AM AKST Tue Dec 14 2021

...SMALL CRAFT ADVISORY THROUGH TUESDAY...

.TONIGHT...E wind 25 kt. Seas 6 ft. 
.TUE...E wind 25 kt. Seas 5 ft. Freezing spray in the
morning. 
.TUE NIGHT...E wind 20 kt. Seas 4 ft. 
.WED...NE wind 15 kt. Seas 5 ft. 
.WED NIGHT...NE wind 20 kt. Seas 6 ft. 
.THU...E wind 20 kt. Seas 5 ft. 
.FRI...NE wind 20 kt. Seas 6 ft. 
.SAT...NE wind 15 kt. Seas 7 ft. 



$$

PKZ031-151030-
Stephens Passage-
117 AM AKST Tue Dec 14 2021

...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT...

.TONIGHT...N wind 30 kt. Higher gusts out of interior passes. 
Seas 6 ft. Freezing spray. 
.TUE...N wind 20 kt. Higher gusts out of interior passes. Seas 5 ft.
Freezing spray. 
.TUE NIGHT...N wind 25 kt. Higher gusts out of interior passes. 
Seas 5 ft. Freezing spray.
.WED...N wind 20 kt. Seas 4 ft. Freezing spray. 
.WED NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.THU...N wind 15 kt becoming SE 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt becoming N. Seas 4 ft. 
.SAT...N wind 15 kt becoming SE. Seas 3 ft. 



$$

PKZ032-151030-
Northern Chatham Strait-
117 AM AKST Tue Dec 14 2021

.REST OF TONIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.TUE...N wind 20 kt. Seas 9 ft. Freezing spray. 
.TUE NIGHT...N wind 10 kt. Seas 8 ft. 
.WED...N wind 25 kt. Seas 3 ft. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...NE wind 15 kt becoming SE 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt becoming N. Seas 4 ft. 
.SAT...N wind 10 kt becoming SE 15 kt. Seas building to 3 ft. 



$$

PKZ033-151030-
Southern Chatham Strait-
117 AM AKST Tue Dec 14 2021

.REST OF TONIGHT...N wind 15 kt. Seas 4 ft, except 7 ft near
ocean entrances. 
.TUE...NE wind 15 kt. Seas 3 ft, except 6 ft near ocean
entrances. 
.TUE NIGHT...N wind 15 kt. Seas 3 ft. 
.WED...N wind 10 kt. Seas 4 ft. 
.WED NIGHT...N wind 10 kt. Seas 4 ft. 
.THU...NE wind 10 kt becoming SE 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt becoming N 15 kt. Seas 5 ft. 
.SAT...N wind 10 kt. Seas 2 ft or less. 



$$

PKZ034-151030-
Frederick Sound-
117 AM AKST Tue Dec 14 2021

.TONIGHT...NE wind 20 kt. Gusts to 45 kt out of interior passes. 
Seas 4 ft. Freezing spray. 
.TUE...NE wind 15 kt. Gusts to 45 kt out of interior passes. Seas
3 ft. Freezing spray in the morning. 
.TUE NIGHT...NE wind 15 kt. Gusts to 40 kt out of interior 
passes. Seas 3 ft. 
.WED...NE wind 12 kt. Seas 3 ft. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...NE wind 15 kt becoming E 20 kt. Seas 4 ft. 
.FRI...E wind 20 kt becoming N 10 kt. Seas 4 ft. 
.SAT...N wind 10 kt becoming E. Seas 2 ft or less. 



$$

PKZ035-151030-
Sumner Strait-
117 AM AKST Tue Dec 14 2021

.TONIGHT...NE wind 20 kt. Gusts to 45 kt out of interior passes. 
Seas 4 ft, except 6 ft near ocean entrances. Freezing spray.
.TUE...E wind 20 kt. Gusts to 45 kt out of interior passes. Seas 
4 ft. Freezing spray in the morning. 
.TUE NIGHT...E wind 15 kt. Gusts to 40 kt out of interior
passes. Seas 3 ft. 
.WED...NE wind 10 kt. Seas 2 ft or less, except 5 ft near
ocean entrances. 
.WED NIGHT...NE wind 10 kt. Seas 2 ft or less. 
.THU...E wind 15 kt. Seas 3 ft. 
.FRI...E wind 20 kt. Seas 4 ft. 
.SAT...N wind 10 kt becoming E 15 kt. Seas building to 3 ft. 



$$

PKZ036-151030-
Clarence Strait-
117 AM AKST Tue Dec 14 2021

.TONIGHT...N wind 15 kt. Gusts to 40 kt out of interior passes.
Seas 3 ft, except 6 ft near ocean entrances. 
.TUE...N wind 15 kt. Gusts to 40 kt out of interior passes.
Seas 3 ft. 
.TUE NIGHT...N wind 15 kt. Gusts to 35 kt out of interior
passes. Seas 3 ft. 
.WED...N wind 15 kt. Seas 3 ft. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...N wind 15 kt becoming SE 25 kt. Seas building to 5 ft. 
.FRI...SE wind 25 kt becoming N 15 kt. Seas 6 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 



$$

186 
FZAK51 PAJK 141236
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
336 AM AKST Tue Dec 14 2021

Southeast Alaska Inside Waters from Dixon Entrance to Skagway

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ098-150430-
336 AM AKST Tue Dec 14 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A surface ridge over the western Gulf will shift east as a low
over the western Gulf of Alaska tracks southeast through Tuesday
night while remaining south of the Panhandle.  

$$

PKZ011-150430-
Glacier Bay-
336 AM AKST Tue Dec 14 2021

.TODAY...N wind 15 kt. Seas 3 ft. 
.TONIGHT...N wind 15 kt. Seas 3 ft in the evening then 2 ft or
less. 
.WED...N wind 15 kt increasing to 25 kt in the afternoon.
Seas 4 ft. Freezing spray. 
.WED NIGHT...N wind 20 kt. Seas 4 ft. Freezing spray. 
.THU...N wind 15 kt. Seas 3 ft. 
.FRI...N wind 15 kt. Seas 3 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 

$$

PKZ012-150430-
Northern Lynn Canal-
336 AM AKST Tue Dec 14 2021

.TODAY...N wind 15 kt. Seas 4 ft. 
.TONIGHT...N wind 20 kt. Gusts to 35 kt late. Seas 4 ft. Freezing
spray late. 
.WED...N wind 30 kt increasing to gale to 40 kt in the
afternoon. Seas 7 ft. Freezing spray. 
.WED NIGHT...N gale to 40 kt. Seas 8 ft. Freezing spray. 
.THU...N wind 25 kt diminishing to 15 kt. Seas 4 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...N wind 20 kt. Seas 4 ft. 

$$

PKZ013-150430-
Southern Lynn Canal-
336 AM AKST Tue Dec 14 2021

.TODAY...N wind 15 kt. Seas 4 ft. 
.TONIGHT...N wind 15 kt. Seas 3 ft. 
.WED...N wind 25 kt increasing to gale to 35 kt in the
afternoon. Seas 6 ft. Freezing spray. 
.WED NIGHT...N gale to 40 kt. Seas 7 ft. Freezing spray. 
.THU...NE wind 15 kt. Seas 4 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...NE wind 15 kt. Seas 3 ft. 

$$

PKZ021-150430-
Icy Strait-
336 AM AKST Tue Dec 14 2021

.TODAY...E wind 15 kt. Seas 4 ft. 
.TONIGHT...NE wind 15 kt becoming NW late. Seas 3 ft in the
evening then 2 ft or less. 
.WED...NE wind 15 kt increasing to 25 kt in the afternoon.
Seas 4 ft. 
.WED NIGHT...NE wind 25 kt. Seas 5 ft. 
.THU...E wind 15 kt. Seas 3 ft. 
.FRI...E wind 20 kt. Seas 4 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 

$$

PKZ022-150430-
Cross Sound-
336 AM AKST Tue Dec 14 2021

...SMALL CRAFT ADVISORY THROUGH THIS AFTERNOON...

.TODAY...E wind 25 kt. Seas 6 ft. Freezing spray in the morning. 
.TONIGHT...E wind 20 kt. Seas 5 ft. 
.WED...NE wind 15 kt. Seas 5 ft. 
.WED NIGHT...NE wind 20 kt. Seas 6 ft. 
.THU...E wind 20 kt. Seas 5 ft. 
.FRI...NE wind 20 kt. Seas 5 ft. 
.SAT...W wind 10 kt. Seas 5 ft. 

$$

PKZ031-150430-
Stephens Passage-
336 AM AKST Tue Dec 14 2021

.TODAY...N wind 15 kt. Seas 3 ft. 
.TONIGHT...NW wind 20 kt. Seas 3 ft. 
.WED...N wind 25 kt. Seas 5 ft. Freezing spray in the
morning. 
.WED NIGHT...N wind 30 kt. Seas 6 ft. Freezing spray. 
.THU...N wind 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt. Seas 4 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 

$$

PKZ032-150430-
Northern Chatham Strait-
336 AM AKST Tue Dec 14 2021

.TODAY...SE wind 15 kt. Seas 3 ft. 
.TONIGHT...N wind 10 kt. Seas 2 ft or less. 
.WED...N wind 15 kt increasing to 30 kt in the afternoon.
Seas 4 ft. 
.WED NIGHT...N wind 30 kt. Seas 6 ft. 
.THU...NE wind 15 kt. Seas 4 ft. 
.FRI...SE wind 20 kt. Seas 4 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 

$$

PKZ033-150430-
Southern Chatham Strait-
336 AM AKST Tue Dec 14 2021

.TODAY...SE wind 15 kt. Seas 3 ft, except 6 ft near ocean
entrances. 
.TONIGHT...E wind 10 kt becoming NW late. Seas 4 ft. 
.WED...N wind 15 kt. Seas 3 ft, except 6 ft near ocean
entrances. 
.WED NIGHT...N wind 20 kt. Seas 4 ft. 
.THU...NE wind 15 kt. Seas 4 ft. 
.FRI...SE wind 20 kt. Seas 4 ft. 
.SAT...N wind 10 kt. Seas 2 ft or less. 

$$

PKZ034-150430-
Frederick Sound-
336 AM AKST Tue Dec 14 2021

.TODAY...E wind 15 kt. Seas 3 ft. 
.TONIGHT...NW wind 10 kt. Seas 3 ft. 
.WED...N wind 20 kt. Seas 4 ft. 
.WED NIGHT...N wind 25 kt. Seas 5 ft. 
.THU...E wind 15 kt. Seas 4 ft. 
.FRI...E wind 20 kt. Seas 4 ft. 
.SAT...N wind 10 kt. Seas 2 ft or less. 

$$

PKZ035-150430-
Sumner Strait-
336 AM AKST Tue Dec 14 2021

.TODAY...E wind 20 kt. Seas 4 ft. 
.TONIGHT...E wind 15 kt. Seas 3 ft. 
.WED...NE wind 10 kt. Seas 2 ft or less. 
.WED NIGHT...NE wind 10 kt. Seas 2 ft or less. 
.THU...E wind 15 kt. Seas building to 4 ft. 
.FRI...E wind 20 kt. Seas 4 ft. 
.SAT...N wind 10 kt. Seas building to 3 ft. 

$$

PKZ036-150430-
Clarence Strait-
336 AM AKST Tue Dec 14 2021

.TODAY...N wind 15 kt. Seas 4 ft. 
.TONIGHT...N wind 15 kt. Seas 5 ft. 
.WED...N wind 15 kt. Seas 4 ft. 
.WED NIGHT...N wind 15 kt. Seas 3 ft. 
.THU...N wind 15 kt becoming SE 25 kt. Seas 4 ft. 
.FRI...SE wind 25 kt. Seas 5 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
424 PM AKST Mon Dec 13 2021

.SHORT TERM.../Through Tuesday Night/...We continue to be in an
offshore northerly outflow pattern with an established strong area
of high pressure over the Yukon region of Canada and generally
lower pressure across Southeast Alaska and the Gulf. We will
remain in that pattern for the duration of the short term forecast
period. This yields generally dry conditions with mostly clear
skies throughout the Panhandle. Some strong gusty channel/pass
winds oriented perpendicular to and located under the strong
pressure gradient along the Coast Mountains.

Temperatures will be at their coldest tonight across the
Panhandle with lows ranging from below zero near White Pass and
Haines Customs in the extreme northern Panhandle to around 20 in
the southern Panhandle. This is supported universally by MOS
guidance and model forecast 850mb temperatures of negative 15 to
negative 25 Celsius that are advecting into the Panhandle from
the north, which translates into very cold surface temperatures.
The decreased cloudiness will add a radiational component to our
cooling along with the cold air advecting in from the the north.

Due to the strong winds of up to 25 mph with gusts up to around 45
mph and cold temperatures dipping down to between negative 5 and
negative 10, wind chill readings could dip as low as 35 below near
White Pass into Tuesday morning. These dangerously cold wind
chills could cause frostbite on exposed skin in as little as 10
minutes. Therefore, a Wind Chill Advisory is in effect until 9AM
AKST Tuesday for the Klondike Highway. Strong winds of around 25
mph with gusts up to around 40 mph are also possible in the
Skagway area tonight, but temperatures will not be quite as cold
there due to downslope warming.

Mainly dry conditions will persist through the Tuesday. Another
system enters the eastern Gulf and begins to approach the
Panhandle Tuesday morning, but immediately dips southward and
exits the southeastern Gulf. Instead, it looks to bring mainly
clouds and some fairly low chances of light isolated snow showers
tonight and Tuesday night for Yakutat and late Tuesday night for
the southern Panhandle. Any accumulation should be quite light in
those areas.

For the marines, freezing spray, heavy at times, and high waves
are possible in Lynn Canal and northern Chatham Strait due to the
long fetch of strong northerly outflow Gale force winds allowing
the waves to build up to around 12 ft tonight and into Tuesday
morning. Gusts up to around 45 kt are also possible out of
interior passes.

Forecast confidence through Tuesday night is generally average to
above average due to good weather forecast model agreement.

.LONG TERM...The extended forecast is looking to stay below
normal for temperatures an less active than winter has been so
far. Generally lowered temps and pop/qpf for this forecast package
and kept some of the northerly outflow winds going.

An upper level ridge rebuilds over the western gulf Wednesday and
extends northward into the arctic, with the subsequent NWLY jet
stream across SE Alaska. This flow pattern will keep us mainly dry
and cold on Wednesday, but models are picking up on some precip
(snow showers) tracking across the area (NW to SE along the outer
coast) assoc with some upper level vorticity and a weak lingering
lee side low over the northern gulf. Think that the dry outflow
will put a damper on the snow potential and will see some clouds
with it but only light snow.

Wednesday night, surface high pressure builds in the Yukon,
causing increased north winds through the northern inner channels.
The upper level ridge will shift eastward across the panhandle
through the day Thursday with flow backing to the SW followed by
a quick moving trough pushing through for Friday. At the surface,
a low moves across the northern gulf Thursday night, only to be
taken over by another low tracking across the north Pacific, well
south of the area. This north Pacific low is further south than
yesterday and the northern gulf low is quite a bit weaker too in
the latest models. The trend of systems becoming weaker with new
model runs is fairly common when we've had dry/cold/outflow in
place. It takes longer to overcome the dry airmass and models tend
to do that too quickly, then find themselves backtracking the
next day. Still, snow ratios look to be on the high side to start
(dry/fluffy snow) so could see a quick couple inches late Thursday
night through Friday afternoon.

The break between systems looks brief Friday night through Saturday
morning as another upper level trough and weak surface low will be
moving in from the west by afternoon. Again this looks to be a quick
moving system with minor accumulations Saturday night.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Wind Chill Advisory until 9 AM AKST Tuesday for AKZ018.
MARINE...Heavy Freezing Spray Warning for PKZ012.
     Gale Warning for PKZ012-041-052.
     Small Craft Advisory for PKZ011-013-021-022-031>033-035-042-043-
     051.

&&

JLC/Ferrin

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