Small Craft Advisory 172, NWS Juneau, AK

941 
FZAK51 PAJK 201135
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
335 AM AKDT Sat Mar 20 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.

PKZ098-210230-
335 AM AKDT Sat Mar 20 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A gale force front tracks east across the central Gulf reaching
the panhandle by late Saturday afternoon. The associated low
moves into the NE Gulf Saturday afternoon moving towards Cross
Sound by early Sunday while weakening. 

$$

PKZ011-210230-
Glacier Bay-
335 AM AKDT Sat Mar 20 2021

.TODAY...NE wind increasing to 15 kt. Seas 2 ft or less, then 
then 3 ft in the afternoon. Snow in the afternoon. 
.TONIGHT...N wind 15 kt. Seas 3 ft. Snow.
.SUN...N wind 20 kt diminishing. Seas 4 ft in the morning then 2 
ft or less. Snow and rain showers in the morning. 
.SUN NIGHT...NE wind 10 kt. Seas 2 ft or less. 
.MON...Light winds. Seas 2 ft or less. 
.TUE...NW wind 10 kt. Seas 2 ft or less. 
.WED...Light winds. Seas 2 ft or less. 

$$

PKZ012-210230-
Northern Lynn Canal-
335 AM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY LATE TONIGHT...

.TODAY...N wind 20 kt diminishing. Seas 4 ft early in the morning
then 2 ft or less. Snow in the afternoon. 
.TONIGHT...N wind 15 kt increasing to 30 kt late. Seas 3 ft
building to 6 ft late. Snow.
.SUN...NW wind 30 kt diminishing to 15 kt in the afternoon.
Gusts to 45 kt in the morning. Seas 6 ft subsiding to 3 ft in the
afternoon. Snow in the morning. 
.SUN NIGHT...N wind 15 kt. Seas 3 ft. Snow showers and rain
showers. 
.MON...N wind 15 kt. Seas 3 ft. 
.TUE...N wind 15 kt. Seas 3 ft. 
.WED...NW wind 15 kt becoming S. Seas 3 ft. 

$$

PKZ013-210230-
Southern Lynn Canal-
335 AM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY LATE TONIGHT...

.TODAY...N wind 15 kt. Seas 3 ft. Snow in the afternoon. 
.TONIGHT...N wind 20 kt increasing to 30 kt late. Seas building to
6 ft. Snow. Rain late. 
.SUN...NW wind 30 kt becoming N 15 kt in the afternoon. Seas
6 ft subsiding to 3 ft in the afternoon. Snow in the morning.
Rain showers. 
.SUN NIGHT...NW wind 10 kt. Seas 2 ft or less. Snow showers. 
.MON...Light winds. Seas 2 ft or less. 
.TUE...N wind 10 kt. Seas 2 ft or less. 
.WED...NW wind 15 kt becoming light. Seas 3 ft. 

$$

PKZ021-210230-
Icy Strait-
335 AM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY THIS AFTERNOON THROUGH LATE TONIGHT...

.TODAY...E wind 15 kt increasing to 25 kt in the afternoon. Seas
building to 5 ft. Snow and rain in the afternoon. 
.TONIGHT...E wind 30 kt. Seas 6 ft. Snow and rain. 
.SUN...NE wind 25 kt diminishing to 15 kt in the afternoon.
Seas 5 ft subsiding. Snow and rain in the morning. 
.SUN NIGHT...E wind 10 kt. Seas 2 ft or less. 
.MON...Light winds becoming E 10 kt. Seas 2 ft or less. 
.TUE...E wind 15 kt. Seas 3 ft. 
.WED...Light winds becoming S 10 kt. Seas 2 ft or less. 

$$

PKZ022-210230-
Cross Sound-
335 AM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY THIS AFTERNOON THROUGH LATE TONIGHT...

.TODAY...E wind 15 kt becoming NE 25 kt in the afternoon. Seas
7 ft. W swell early in the morning. Snow and rain in the
afternoon. 
.TONIGHT...NE wind 30 kt. Seas 7 ft. Snow and rain. 
.SUN...NE wind 25 kt diminishing to 15 kt in the afternoon.
Seas 7 ft. W swell in the afternoon. Snow and rain in the
morning. 
.SUN NIGHT...E wind 10 kt. Seas 8 ft. W swell. 
.MON...W wind 10 kt becoming E. Seas 8 ft. 
.TUE...E wind 20 kt. Seas 6 ft. 
.WED...SW wind 15 kt. Seas 8 ft. 

$$

PKZ031-210230-
Stephens Passage-
335 AM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY THIS AFTERNOON THROUGH LATE TONIGHT...

.TODAY...S wind 15 kt becoming SE 25 kt in the afternoon. Seas
building to 5 ft. Snow with rain in the afternoon. 
.TONIGHT...SE wind 30 kt becoming NE late. Gusts to 45 kt. Seas
6 ft. Rain and snow. 
.SUN...NE wind 20 kt. Gusts to 35 kt in the morning. Seas
4 ft. Rain and snow in the morning, then rain showers in the
afternoon. 
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain showers. 
.MON...SE wind 10 kt. Seas 2 ft or less. 
.TUE...SE wind 10 kt becoming N. Seas 2 ft or less. 
.WED...NW wind 10 kt becoming SE. Seas 2 ft or less. 

$$

PKZ032-210230-
Northern Chatham Strait-
335 AM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY THIS AFTERNOON THROUGH LATE TONIGHT...

.TODAY...SE wind 10 kt increasing to 25 kt in the afternoon. 
Gusts to 40 kt in the afternoon. Seas building to 4 ft. Rain and 
snow in the afternoon.
.TONIGHT...SE wind 30 kt becoming NE late. Seas 6 ft. Rain and
snow. 
.SUN...NE wind 15 kt. Seas 3 ft. Rain in the morning. 
.SUN NIGHT...S wind 10 kt. Seas 2 ft or less. 
.MON...S wind 10 kt becoming light. Seas 2 ft or less. 
.TUE...SE wind 15 kt becoming N. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 

$$

PKZ033-210230-
Southern Chatham Strait-
335 AM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY THIS AFTERNOON THROUGH LATE TONIGHT...

.TODAY...S wind 10 kt becoming SE 25 kt in the afternoon. Seas
building to 5 ft in the afternoon. Near ocean entrances, seas
7 ft. Rain and snow. 
.TONIGHT...SE wind 30 kt. Gusts to 45 kt. Seas 6 ft, except 9 ft
near ocean entrances. Rain.
.SUN...S wind 15 kt. Seas 3 ft, except 9 ft near ocean
entrances. Rain in the morning. 
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less, except 10 ft
near ocean entrances. 
.MON...SE wind 10 kt. Seas 3 ft. 
.TUE...S wind 10 kt. Seas 2 ft or less. 
.WED...NE wind 10 kt becoming S. Seas 2 ft or less. 

$$

PKZ034-210230-
Frederick Sound-
335 AM AKDT Sat Mar 20 2021

...GALE WARNING THIS EVENING THROUGH LATE TONIGHT...

.TODAY...S wind 10 kt increasing to SE 25 kt in the afternoon. 
Gusts to 40 kt in the afternoon. Seas building to 5 ft. Rain with
snow in the afternoon. 
.TONIGHT...E wind 35 kt. Gusts to 50 kt. Seas 7 ft. Rain and 
snow. 
.SUN...E wind 20 kt. Gusts to 35 kt in the morning. Seas 4 ft.
Rain.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 15 kt. Seas 3 ft. 
.TUE...S wind 15 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 

$$

PKZ035-210230-
Sumner Strait-
335 AM AKDT Sat Mar 20 2021

...GALE WARNING TONIGHT...

.TODAY...SW wind 10 kt becoming SE 30 kt in the afternoon. Gusts
to 45 kt in the afternoon. Seas building to 6 ft in the 
afternoon. Rain with snow in the afternoon. 
.TONIGHT...SE wind 35 kt. Gusts to 50 kt. Seas 7 ft. Rain.
.SUN...S wind 20 kt diminishing. Seas 4 ft, except 6 ft near 
ocean entrances. Rain.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less, except 6 ft
near ocean entrances. 
.MON...S wind 10 kt. Seas 2 ft or less. 
.TUE...S wind 15 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming SW 15 kt. Seas building to 3 ft. 

$$

PKZ036-210230-
Clarence Strait-
335 AM AKDT Sat Mar 20 2021

...GALE WARNING TONIGHT...

.TODAY...Variable wind 10 kt becoming SE 30 kt in the afternoon. 
Seas building to 6 ft in the afternoon. Rain with snow in the 
afternoon.
.TONIGHT...SE wind 35 kt. Seas 9 ft. Rain.
.SUN...S wind 20 kt. Seas 5 ft. Rain.
.SUN NIGHT...S wind 15 kt. Seas 4 ft. 
.MON...SE wind 15 kt. Seas 4 ft. 
.TUE...S wind 25 kt. Seas 7 ft. 
.WED...W wind 15 kt. Seas 3 ft. 

$$

798 
FZAK51 PAJK 210008
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
408 PM AKDT Sat Mar 20 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.

PKZ098-211730-
408 PM AKDT Sat Mar 20 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A gale force front impacts the Panhandle through Saturday night. 
The associated low moves across the gulf towards Cross Sound 
through Sunday.

$$

PKZ011-211730-
Glacier Bay-
408 PM AKDT Sat Mar 20 2021

.TONIGHT...N wind 15 kt. Seas 3 ft. Snow.
.SUN...N wind 15 kt. Seas 3 ft in the morning then 2 ft or
less. Snow in the morning. 
.SUN NIGHT...NE wind 10 kt. Seas 2 ft or less. 
.MON...Light winds. Seas 2 ft or less. Rain.
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Snow with rain.
.TUE...NW wind 15 kt. Seas 3 ft. 
.WED...Light winds. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ012-211730-
Northern Lynn Canal-
408 PM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY LATE TONIGHT THROUGH SUNDAY MORNING...

.TONIGHT...N wind 10 kt increasing to 30 kt late. Seas building 
to 6 ft. Snow.
.SUN...NW wind 30 kt diminishing to 15 kt in the afternoon.
Gusts to 45 kt in the morning. Seas 6 ft subsiding to 3 ft in the
afternoon. Snow in the morning.
.SUN NIGHT...NW wind 15 kt. Seas 3 ft. Rain showers in the
evening. Snow showers. 
.MON...NW wind 10 kt. Seas 2 ft or less. Rain and snow
showers. 
.MON NIGHT...N wind 10 kt. Seas 2 ft or less. Rain and snow. 
.TUE...N wind 20 kt. Seas 4 ft. 
.WED...NW wind 15 kt becoming S. Seas 3 ft. 
.THU...SE wind 15 kt. Seas building to 4 ft. 

$$

PKZ013-211730-
Southern Lynn Canal-
408 PM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY LATE TONIGHT THROUGH SUNDAY MORNING...

.TONIGHT...N wind 10 kt increasing to 30 kt late. Seas building to
6 ft. Snow.
.SUN...NW wind 30 kt becoming N 15 kt in the afternoon. Seas
6 ft subsiding to 3 ft in the afternoon. Snow and rain showers in
the morning. 
.SUN NIGHT...NW wind 10 kt. Seas 2 ft or less. Rain showers and 
snow showers in the evening. 
.MON...NW wind 10 kt. Seas 2 ft or less. Rain and snow
showers. 
.MON NIGHT...Light winds. Seas 2 ft or less. Rain and snow. 
.TUE...N wind 15 kt. Seas 3 ft. 
.WED...NW wind 15 kt becoming light. Seas 3 ft. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ021-211730-
Icy Strait-
408 PM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY TONIGHT SUNDAY MORNING...

.TONIGHT...E wind 15 kt increasing to 30 kt in the evening. Seas 
building to 6 ft. Snow.
.SUN...NE wind 25 kt becoming E 15 kt in the afternoon. Seas
5 ft subsiding to 3 ft. Snow and rain showers in the morning. 
.SUN NIGHT...E wind 10 kt. Seas 2 ft or less. 
.MON...Light winds. Seas 2 ft or less. Rain.
.MON NIGHT...E wind 10 kt. Seas 2 ft or less. Rain and snow. 
.TUE...E wind 15 kt. Seas 3 ft. 
.WED...Light winds becoming S 10 kt. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ022-211730-
Cross Sound-
408 PM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...NE wind increasing to 30 kt in the evening. Seas 8 ft.
Rain in the evening. Snow.
.SUN...NE wind 20 kt. Seas 7 ft. SW swell in the afternoon.
Snow and rain showers in the morning. 
.SUN NIGHT...E wind 10 kt becoming W late. Seas 9 ft. SW
swell. 
.MON...W wind 10 kt. Seas 8 ft. SW swell. Rain.
.MON NIGHT...E wind 10 kt. Seas 6 ft. SW swell. Rain.
.TUE...E wind 20 kt. Seas 6 ft. 
.WED...SW wind 15 kt. Seas 8 ft. 
.THU...SW wind 15 kt. Seas 7 ft. 

$$

PKZ031-211730-
Stephens Passage-
408 PM AKDT Sat Mar 20 2021

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

.TONIGHT...SE wind increasing to 30 kt in the evening. Seas 6 ft.
Rain early, then snow and rain.
.SUN...SE wind 20 kt. Seas 4 ft. Rain and snow in the morning,
then rain showers in the afternoon. 
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain showers
and snow showers late. 
.MON...SE wind 10 kt. Seas 2 ft or less. Rain and snow
showers. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...SE wind 10 kt becoming N. Seas 2 ft or less. 
.WED...NW wind 10 kt becoming SE. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ032-211730-
Northern Chatham Strait-
408 PM AKDT Sat Mar 20 2021

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

.TONIGHT...SE wind 25 kt. Seas 5 ft. Snow and rain. 
.SUN...SE wind 15 kt. Seas 3 ft. Rain and snow in the morning.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 10 kt. Seas 2 ft or less. Rain.
.MON NIGHT...Light winds. Seas 2 ft or less. Rain.
.TUE...SE wind 15 kt becoming N. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...SE wind 10 kt. Seas building to 3 ft. 

$$

PKZ033-211730-
Southern Chatham Strait-
408 PM AKDT Sat Mar 20 2021

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

.TONIGHT...SE wind increasing to 30 kt in the evening. Seas 6 ft,
except 9 ft near ocean entrances. Rain and snow. 
.SUN...S wind 15 kt. Seas 3 ft, except 9 ft near ocean
entrances. Rain in the morning. 
.SUN NIGHT...S wind 10 kt. Seas 2 ft or less, except 10 ft
near ocean entrances. 
.MON...S wind 15 kt. Seas 3 ft, except 8 ft near ocean
entrances. Rain.
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less, except 6 ft
near ocean entrances. Rain.
.TUE...S wind 10 kt. Seas 2 ft or less. 
.WED...NE wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 10 kt. Seas 2 ft or less. 

$$

PKZ034-211730-
Frederick Sound-
408 PM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...E wind 25 kt. Gusts to 45 kt. Seas 6 ft. Snow and
rain. 
.SUN...SE wind 20 kt. Seas 4 ft. Snow in the morning. Rain.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 15 kt. Seas 3 ft. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...S wind 15 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...Light winds becoming S 10 kt. Seas 2 ft or less. 

$$

PKZ035-211730-
Sumner Strait-
408 PM AKDT Sat Mar 20 2021

...GALE WARNING THIS EVENING THROUGH LATE TONIGHT...

.TONIGHT...SE wind increasing to 35 kt in the evening. Gusts to 
50 kt. Seas 7 ft. Rain and snow.
.SUN...S wind 15 kt. Seas 4 ft, except 6 ft near ocean
entrances. Snow in the morning. Rain.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less, except 6 ft
near ocean entrances. 
.MON...S wind 10 kt. Seas 2 ft or less. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...S wind 15 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming SW. Seas building to 3 ft. 
.THU...S wind 10 kt. Seas 2 ft or less. 

$$

PKZ036-211730-
Clarence Strait-
408 PM AKDT Sat Mar 20 2021

...GALE WARNING THIS EVENING THROUGH TONIGHT...

.TONIGHT...SE wind 20 kt becoming 35 kt in the evening. Seas 
building to 8 ft. Snow early. Rain.
.SUN...S wind 20 kt. Seas 4 ft. Rain.
.SUN NIGHT...S wind 15 kt. Seas 4 ft. 
.MON...SE wind 10 kt. Seas 3 ft. Rain.
.MON NIGHT...SE wind 20 kt. Seas 3 ft. Rain.
.TUE...S wind 25 kt. Seas 5 ft. 
.WED...W wind 15 kt. Seas 3 ft. 
.THU...SW wind 10 kt becoming SE. Seas 2 ft or less. 

$$

754 
FZAK51 PAJK 210417 AAA
CWFAJK

Coastal Waters Forecast for Southeast Alaska...UPDATED
National Weather Service Juneau AK
817 PM AKDT Sat Mar 20 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.

PKZ098-211745-
817 PM AKDT Sat Mar 20 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A gale force front impacts the Panhandle through Saturday night.
The associated low moves across the gulf towards Cross Sound 
through Sunday. 

$$

PKZ011-211745-
Glacier Bay-
817 PM AKDT Sat Mar 20 2021

.TONIGHT...N wind 15 kt. Seas 3 ft. Snow.
.SUN...N wind 15 kt. Seas 3 ft in the morning then 2 ft or
less. Snow in the morning. 
.SUN NIGHT...NE wind 10 kt. Seas 2 ft or less. 
.MON...Light winds. Seas 2 ft or less. Rain.
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Snow with rain.
.TUE...NW wind 15 kt. Seas 3 ft. 
.WED...Light winds. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 



$$

PKZ012-211745-
Northern Lynn Canal-
817 PM AKDT Sat Mar 20 2021

...SMALL CRAFT ADVISORY LATE TONIGHT THROUGH SUNDAY MORNING...

.TONIGHT...N wind 10 kt increasing to 30 kt late. Seas building 
to 6 ft. Snow.
.SUN...NW wind 30 kt diminishing to 15 kt in the afternoon.
Gusts to 45 kt in the morning. Seas 6 ft subsiding to 3 ft in the
afternoon. Snow in the morning.
.SUN NIGHT...NW wind 15 kt. Seas 3 ft. Rain showers in the
evening. Snow showers. 
.MON...NW wind 10 kt. Seas 2 ft or less. Rain and snow
showers. 
.MON NIGHT...N wind 10 kt. Seas 2 ft or less. Rain and snow. 
.TUE...N wind 20 kt. Seas 4 ft. 
.WED...NW wind 15 kt becoming S. Seas 3 ft. 
.THU...SE wind 15 kt. Seas building to 4 ft. 



$$

PKZ013-211745-
Southern Lynn Canal-
817 PM AKDT Sat Mar 20 2021

UPDATED

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

.REST OF TONIGHT...N wind 20 kt increasing to 30 kt late. Seas
6 ft. Snow.
.SUN...NW wind 30 kt becoming N 15 kt in the afternoon. Seas
6 ft subsiding to 3 ft in the afternoon. Snow and rain showers in
the morning. 
.SUN NIGHT...NW wind 10 kt. Seas 2 ft or less. Rain showers and 
snow showers in the evening. 
.MON...NW wind 10 kt. Seas 2 ft or less. Rain and snow
showers. 
.MON NIGHT...Light winds. Seas 2 ft or less. Rain and snow. 
.TUE...N wind 15 kt. Seas 3 ft. 
.WED...NW wind 15 kt becoming light. Seas 3 ft. 
.THU...S wind 15 kt. Seas building to 3 ft. 



$$

PKZ021-211745-
Icy Strait-
817 PM AKDT Sat Mar 20 2021

UPDATED

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.REST OF TONIGHT...E wind 30 kt. Seas 6 ft. Snow.
.SUN...NE wind 25 kt becoming E 15 kt in the afternoon. Seas
5 ft subsiding to 3 ft. Snow and rain showers in the morning. 
.SUN NIGHT...E wind 10 kt. Seas 2 ft or less. 
.MON...Light winds. Seas 2 ft or less. Rain.
.MON NIGHT...E wind 10 kt. Seas 2 ft or less. Rain and snow. 
.TUE...E wind 15 kt. Seas 3 ft. 
.WED...Light winds becoming S 10 kt. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 



$$

PKZ022-211745-
Cross Sound-
817 PM AKDT Sat Mar 20 2021

UPDATED

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

.REST OF TONIGHT...NE wind 30 kt. Seas 8 ft. Snow.
.SUN...NE wind 20 kt. Seas 7 ft. SW swell in the afternoon.
Snow and rain showers in the morning. 
.SUN NIGHT...E wind 10 kt becoming W late. Seas 9 ft. SW
swell. 
.MON...W wind 10 kt. Seas 8 ft. SW swell. Rain.
.MON NIGHT...E wind 10 kt. Seas 6 ft. SW swell. Rain.
.TUE...E wind 20 kt. Seas 6 ft. 
.WED...SW wind 15 kt. Seas 8 ft. 
.THU...SW wind 15 kt. Seas 7 ft. 



$$

PKZ031-211745-
Stephens Passage-
817 PM AKDT Sat Mar 20 2021

UPDATED

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

.REST OF TONIGHT...SE wind 25 kt. Gusts to 40 kt. Seas 5 ft. Snow
and rain. 
.SUN...SE wind 20 kt. Seas 4 ft. Rain and snow in the morning,
then rain showers in the afternoon. 
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain showers
and snow showers late. 
.MON...SE wind 10 kt. Seas 2 ft or less. Rain and snow
showers. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...SE wind 10 kt becoming N. Seas 2 ft or less. 
.WED...NW wind 10 kt becoming SE. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 



$$

PKZ032-211745-
Northern Chatham Strait-
817 PM AKDT Sat Mar 20 2021

UPDATED

.REST OF TONIGHT...SE wind 20 kt. Gusts to 40 kt. Seas 4 ft. Snow
and rain. 
.SUN...SE wind 15 kt. Seas 3 ft. Rain and snow in the morning.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 10 kt. Seas 2 ft or less. Rain.
.MON NIGHT...Light winds. Seas 2 ft or less. Rain.
.TUE...SE wind 15 kt becoming N. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...SE wind 10 kt. Seas building to 3 ft. 



$$

PKZ033-211745-
Southern Chatham Strait-
817 PM AKDT Sat Mar 20 2021

UPDATED

.REST OF TONIGHT...SE wind 20 kt. Gusts to 40 kt. Seas 4 ft,
except 9 ft near ocean entrances. Rain.
.SUN...S wind 15 kt. Seas 3 ft, except 9 ft near ocean
entrances. Rain in the morning. 
.SUN NIGHT...S wind 10 kt. Seas 2 ft or less, except 10 ft
near ocean entrances. 
.MON...S wind 15 kt. Seas 3 ft, except 8 ft near ocean
entrances. Rain.
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less, except 6 ft
near ocean entrances. Rain.
.TUE...S wind 10 kt. Seas 2 ft or less. 
.WED...NE wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 10 kt. Seas 2 ft or less. 



$$

PKZ034-211745-
Frederick Sound-
817 PM AKDT Sat Mar 20 2021

UPDATED

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

.REST OF TONIGHT...SE wind 25 kt. Gusts to 50 kt. Seas 5 ft. Snow
and rain. 
.SUN...SE wind 20 kt. Seas 4 ft. Snow in the morning. Rain.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 15 kt. Seas 3 ft. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...S wind 15 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...Light winds becoming S 10 kt. Seas 2 ft or less. 



$$

PKZ035-211745-
Sumner Strait-
817 PM AKDT Sat Mar 20 2021

UPDATED

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

.REST OF TONIGHT...SE wind 25 kt. Gusts to 50 kt. Seas 5 ft. Rain
and snow. 
.SUN...S wind 15 kt. Seas 4 ft, except 6 ft near ocean
entrances. Snow in the morning. Rain.
.SUN NIGHT...SE wind 10 kt. Seas 2 ft or less, except 6 ft
near ocean entrances. 
.MON...S wind 10 kt. Seas 2 ft or less. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...S wind 15 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming SW. Seas building to 3 ft. 
.THU...S wind 10 kt. Seas 2 ft or less. 



$$

PKZ036-211745-
Clarence Strait-
817 PM AKDT Sat Mar 20 2021

UPDATED

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

.REST OF TONIGHT...SE wind 30 kt. Gusts to 45 kt. Seas 8 ft. 
Rain.
.SUN...S wind 20 kt. Seas 4 ft. Rain.
.SUN NIGHT...S wind 15 kt. Seas 4 ft. 
.MON...SE wind 10 kt. Seas 3 ft. Rain.
.MON NIGHT...SE wind 20 kt. Seas 3 ft. Rain.
.TUE...S wind 25 kt. Seas 5 ft. 
.WED...W wind 15 kt. Seas 3 ft. 
.THU...SW wind 10 kt becoming SE. Seas 2 ft or less. 



$$

349 
FZAK51 PAJK 211123
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
323 AM AKDT Sun Mar 21 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.

PKZ098-220315-
323 AM AKDT Sun Mar 21 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A weakening low in the NE Gulf moves towards Cross Sound through
Sunday. Then a high pressure ridge tracks over the gulf through
Monday. 

$$

PKZ011-220315-
Glacier Bay-
323 AM AKDT Sun Mar 21 2021

.TODAY...N wind 15 kt diminishing. Seas 3 ft early in the morning
then 2 ft or less. Snow and rain showers in the morning. 
.TONIGHT...NE wind 10 kt. Seas 2 ft or less. Rain showers in the
evening. Snow showers. 
.MON...Light winds. Seas 2 ft or less. Rain showers in the
morning. 
.MON NIGHT...SE wind 15 kt. Seas 3 ft. Rain and snow. 
.TUE...NW wind 10 kt. Seas 2 ft or less. 
.WED...Light winds. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ012-220315-
Northern Lynn Canal-
323 AM AKDT Sun Mar 21 2021

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

.TODAY...NW wind 30 kt becoming N 15 kt in the afternoon. Gusts
to 45 kt early in the morning. Seas 6 ft subsiding to 3 ft in the
afternoon. Snow showers early in the morning. 
.TONIGHT...NE wind 15 kt. Seas 3 ft. Snow and rain showers in the
evening, then snow showers late. 
.MON...NW wind 15 kt becoming S 10 kt in the afternoon. Seas 3 ft
in the morning then 2 ft or less. 
.MON NIGHT...SE wind 20 kt. Seas 4 ft. Rain and snow. 
.TUE...N wind 15 kt. Seas 3 ft. 
.WED...NW wind 15 kt becoming S. Seas 3 ft. 
.THU...SE wind 15 kt. Seas 4 ft. 

$$

PKZ013-220315-
Southern Lynn Canal-
323 AM AKDT Sun Mar 21 2021

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

.TODAY...NW wind 30 kt becoming N 15 kt in the afternoon. Seas
6 ft subsiding to 3 ft in the afternoon. Snow and rain showers in
the morning. 
.TONIGHT...Variable wind 10 kt . Seas 2 ft or less. Snow and rain
showers. 
.MON...SE wind 10 kt in the morning becoming light. Seas 2 ft
or less. Snow showers in the morning. Rain showers. 
.MON NIGHT...NE wind 15 kt. Seas 3 ft. Rain and snow. 
.TUE...N wind 10 kt. Seas 2 ft or less. 
.WED...NW wind 15 kt becoming light. Seas 3 ft. 
.THU...S wind 15 kt. Seas 3 ft. 

$$

PKZ021-220315-
Icy Strait-
323 AM AKDT Sun Mar 21 2021

...SMALL CRAFT ADVISORY THROUGH THIS MORNING...

.TODAY...NE wind 25 kt diminishing to 15 kt in the afternoon.
Seas 4 ft. Snow and rain showers in the morning. 
.TONIGHT...E wind 10 kt. Seas 2 ft or less. Snow and rain showers.
.MON...Light winds. Seas 2 ft or less. Snow showers in the
morning. Rain showers. 
.MON NIGHT...E wind 10 kt. Seas 2 ft or less. Rain.
.TUE...E wind 15 kt. Seas 3 ft. 
.WED...Light winds becoming S 10 kt. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ022-220315-
Cross Sound-
323 AM AKDT Sun Mar 21 2021

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

.TODAY...NE wind 30 kt diminishing to 15 kt in the afternoon.
Seas 8 ft. SW swell in the afternoon. Snow showers early in the
morning. 
.TONIGHT...E wind 15 kt becoming NW late. Seas 9 ft. SW swell.
Rain and snow showers. 
.MON...SW wind 15 kt. Seas 9 ft. SW swell. Rain and snow showers 
in the morning, then rain showers in the afternoon. 
.MON NIGHT...E wind 15 kt. Seas 7 ft. SW swell. Rain.
.TUE...E wind 15 kt. Seas 6 ft. 
.WED...SW wind 15 kt. Seas 8 ft. 
.THU...W wind 20 kt. Seas 8 ft. 

$$

PKZ031-220315-
Stephens Passage-
323 AM AKDT Sun Mar 21 2021

.TODAY...SE wind 20 kt diminishing. Seas 4 ft. Rain and snow 
showers in the morning, then rain showers in the afternoon.
.TONIGHT...SE wind 10 kt. Seas 2 ft or less. Snow showers late. 
.MON...SE wind 10 kt. Seas 2 ft or less. Snow showers in the
morning. 
.MON NIGHT...SE wind 15 kt. Seas 3 ft. Rain.
.TUE...SE wind 10 kt becoming N. Seas 2 ft or less. 
.WED...NW wind 10 kt becoming SE. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ032-220315-
Northern Chatham Strait-
323 AM AKDT Sun Mar 21 2021

.TODAY...SE wind 15 kt. Seas 3 ft. Snow showers in the morning. 
Rain showers. 
.TONIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...S wind 10 kt in the morning becoming light. Seas 2 ft
or less. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...SE wind 15 kt becoming N. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 

$$

PKZ033-220315-
Southern Chatham Strait-
323 AM AKDT Sun Mar 21 2021

.TODAY...S wind 15 kt. Seas 3 ft, except 10 ft near ocean
entrances. Rain showers early in the morning. 
.TONIGHT...S wind 10 kt. Seas 2 ft or less, except 10 ft near
ocean entrances. 
.MON...S wind 10 kt. Seas 2 ft or less, except 8 ft near ocean
entrances. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less, except 7 ft
near ocean entrances. Rain.
.TUE...S wind 15 kt. Seas building to 3 ft. 
.WED...NE wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 10 kt. Seas 2 ft or less. 

$$

PKZ034-220315-
Frederick Sound-
323 AM AKDT Sun Mar 21 2021

.TODAY...SE wind 20 kt diminishing. Seas 4 ft. Rain and snow 
showers in the morning, then rain showers in the afternoon.
.TONIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 10 kt. Seas 2 ft or less. 
.MON NIGHT...SE wind 15 kt. Seas 3 ft. Rain.
.TUE...S wind 10 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 10 kt. Seas 2 ft or less. 

$$

PKZ035-220315-
Sumner Strait-
323 AM AKDT Sun Mar 21 2021

.TODAY...S wind 20 kt diminishing. Seas 4 ft, except 6 ft near 
ocean entrances. Snow and rain showers in the morning. 
.TONIGHT...SE wind 10 kt. Seas 2 ft or less, except 6 ft near
ocean entrances. 
.MON...S wind 10 kt. Seas 2 ft or less. 
.MON NIGHT...SE wind 10 kt. Seas 2 ft or less. Rain.
.TUE...S wind 15 kt. Seas 3 ft. 
.WED...NW wind 10 kt becoming SW. Seas building to 3 ft. 
.THU...S wind 10 kt. Seas 2 ft or less. 

$$

PKZ036-220315-
Clarence Strait-
323 AM AKDT Sun Mar 21 2021

...SMALL CRAFT ADVISORY THROUGH THIS MORNING...

.TODAY...SE wind 25 kt becoming S 15 kt in the afternoon. Seas
7 ft subsiding to 4 ft in the afternoon. Near ocean entrances,
seas 8 ft. Rain showers. 
.TONIGHT...S wind 15 kt. Seas 3 ft, except 6 ft near ocean
entrances. 
.MON...SE wind 10 kt. Seas 2 ft or less, except 5 ft near
ocean entrances. 
.MON NIGHT...SE wind 20 kt. Seas 4 ft. 
.TUE...S wind 25 kt. Seas 6 ft. 
.WED...W wind 15 kt. Seas 3 ft. 
.THU...S wind 10 kt. Seas 2 ft or less. 

$$

345 
FZAK51 PAJK 220016
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
416 PM AKDT Sun Mar 21 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.

PKZ098-221745-
416 PM AKDT Sun Mar 21 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A weakening low in the NE Gulf moves towards Cross Sound through
Sunday night. High pressure builds over the gulf through Monday.
Another front moves east across the gulf Monday night.  

$$

PKZ011-221745-
Glacier Bay-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...N wind 10 kt. Seas 2 ft or less. 
.MON...Light winds. Seas 2 ft or less. 
.MON NIGHT...Light winds becoming NW 15 kt late. Seas building
to 3 ft late. Snow and rain late. 
.TUE...NW wind 10 kt. Seas 2 ft or less. Rain and snow. 
.TUE NIGHT...NW wind 10 kt. Seas 2 ft or less. 
.WED...Light winds. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 
.FRI...SE wind 15 kt. Seas building to 3 ft. 

$$

PKZ012-221745-
Northern Lynn Canal-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...N wind 15 kt. Seas 3 ft. Snow showers.
.MON...N wind 15 kt in the morning becoming light. Seas 3 ft in 
the morning then 2 ft or less.
.MON NIGHT...N wind becoming 20 kt. Seas building to 4 ft late.
.TUE...N wind 20 kt. Seas 4 ft. Rain and snow. 
.TUE NIGHT...N wind 15 kt. Seas 3 ft. 
.WED...N wind 15 kt becoming S. Seas 3 ft. 
.THU...SE wind 15 kt. Seas 4 ft. 
.FRI...S wind 20 kt. Seas 4 ft. 

$$

PKZ013-221745-
Southern Lynn Canal-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...N wind 20 kt becoming 10 kt. Seas 4 ft subsiding to 2 
ft or less. Rain showers and snow showers late. 
.MON...N wind 10 kt in the morning becoming light. Seas 2 ft or 
less. Rain and snow showers in the morning. 
.MON NIGHT...N wind becoming 15 kt. Seas building to 3 ft late. 
Rain and snow late. 
.TUE...N wind 15 kt. Seas 3 ft. Rain.
.TUE NIGHT...N wind 10 kt. Seas 2 ft or less. 
.WED...NW wind 15 kt becoming light. Seas 3 ft. 
.THU...S wind 15 kt. Seas 3 ft. 
.FRI...SE wind 15 kt. Seas 3 ft. 

$$

PKZ021-221745-
Icy Strait-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...E wind 10 kt becoming W late. Seas 2 ft or less. 
.MON...Light winds. Seas 2 ft or less. Rain and snow showers in 
the morning. 
.MON NIGHT...E wind 10 kt. Seas 2 ft or less. Snow with rain
late. 
.TUE...E wind 15 kt. Seas 3 ft. Rain.
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...Light winds becoming S 10 kt. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 
.FRI...SE wind 15 kt. Seas 3 ft. 

$$

PKZ022-221745-
Cross Sound-
416 PM AKDT Sun Mar 21 2021

...SMALL CRAFT ADVISORY THROUGH MONDAY...

.TONIGHT...E wind 15 kt becoming W late. Seas 9 ft. SW swell. 
Rain showers and snow showers in the evening. 
.MON...W wind 10 kt becoming E in the afternoon. Seas 8 ft. SW
swell. 
.MON NIGHT...E wind 20 kt. Seas 7 ft. SW swell. Rain and snow.
.TUE...E wind 20 kt. Seas 7 ft. Rain and snow. 
.TUE NIGHT...E wind 10 kt. Seas 6 ft. Rain.
.WED...W wind 15 kt. Seas 8 ft. 
.THU...W wind 20 kt. Seas 8 ft. 
.FRI...W wind 20 kt. Seas 6 ft. 

$$

PKZ031-221745-
Stephens Passage-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...SE wind 20 kt becoming 10 kt late. Seas 4 ft in the 
evening then 2 ft or less. Snow showers in the evening. 
.MON...SE wind 10 kt. Seas 2 ft or less. Snow showers in the
afternoon. 
.MON NIGHT...SE wind 15 kt. Seas building to 3 ft late. Rain
and snow late. 
.TUE...SE wind 20 kt. Seas 4 ft. Rain.
.TUE NIGHT...N wind 10 kt. Seas 2 ft or less. Rain.
.WED...NW wind 10 kt becoming SE. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 
.FRI...SE wind 15 kt. Seas 3 ft. 

$$

PKZ032-221745-
Northern Chatham Strait-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...SE wind 10 kt. Seas 2 ft or less. Rain showers early
in the evening. 
.MON...S wind 10 kt in the morning becoming light. Seas 2 ft
or less. 
.MON NIGHT...Light winds becoming SE 15 kt late. Seas building
to 3 ft late. Rain and snow late. 
.TUE...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft. Rain.
.TUE NIGHT...N wind 10 kt. Seas 2 ft or less. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 15 kt. Seas building to 3 ft. 
.FRI...S wind 15 kt. Seas 3 ft. 

$$

PKZ033-221745-
Southern Chatham Strait-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...S wind 10 kt. Seas 2 ft or less. Near ocean entrances,
seas 9 ft. 
.MON...S wind 10 kt. Seas 2 ft or less, except 8 ft near ocean
entrances. 
.MON NIGHT...SE wind 15 kt. Gusts to 35 kt late. Seas building
to 4 ft late. Near ocean entrances, seas 7 ft. Rain late. 
.TUE...S wind 20 kt. Gusts to 35 kt. Seas 4 ft, except 8 ft
near ocean entrances. Rain.
.TUE NIGHT...S wind 10 kt. Seas 2 ft or less, except 8 ft
near ocean entrances. Rain.
.WED...NE wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 10 kt. Seas 2 ft or less. 
.FRI...SE wind 10 kt. Seas building to 3 ft. 

$$

PKZ034-221745-
Frederick Sound-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 10 kt. Seas 2 ft or less. 
.MON NIGHT...SE wind 15 kt. Seas building to 3 ft late. Rain
and snow late. 
.TUE...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft. Rain.
.TUE NIGHT...S wind 10 kt. Seas 2 ft or less. 
.WED...NW wind 10 kt becoming S. Seas 2 ft or less. 
.THU...S wind 10 kt. Seas 2 ft or less. 
.FRI...SE wind 10 kt. Seas building to 3 ft. 

$$

PKZ035-221745-
Sumner Strait-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...SE wind 10 kt. Seas 2 ft or less. Near ocean 
entrances, seas 6 ft. 
.MON...S wind 10 kt. Seas 2 ft or less, except 5 ft near ocean
entrances. 
.MON NIGHT...SE wind 15 kt. Seas building to 3 ft late. Rain
late. 
.TUE...S wind 25 kt. Seas 5 ft. Rain.
.TUE NIGHT...S wind 15 kt. Seas 3 ft. Rain.
.WED...NW wind 10 kt becoming SW. Seas building to 3 ft. 
.THU...S wind 10 kt. Seas 2 ft or less. 
.FRI...S wind 10 kt. Seas 2 ft or less. 

$$

PKZ036-221745-
Clarence Strait-
416 PM AKDT Sun Mar 21 2021

.TONIGHT...SE wind 15 kt. Seas 3 ft. Rain showers early in the 
evening. 
.MON...SE wind 10 kt. Seas 2 ft or less. 
.MON NIGHT...SE wind 20 kt. Seas 4 ft. 
.TUE...SE wind 25 kt. Seas 5 ft. Rain.
.TUE NIGHT...S wind 20 kt. Seas 4 ft. Rain.
.WED...W wind 15 kt. Seas 3 ft. 
.THU...SE wind 10 kt. Seas 2 ft or less. 
.FRI...SE wind 10 kt. Seas 2 ft or less. 

$$

Southeast Alaska Forecast Discussion...UPDATED
National Weather Service Juneau AK
512 PM AKDT Fri Mar 19 2021

.UPDATE...QPF amounts from the GFS and ECMWF ensembles for the
Saturday afternoon into Sunday morning timeframe show about 0.5
inches of liquid for the Icy Strait corridor. During this period
the precipitation will be all snow (as mentioned in the short term
discussion), and since the highest precipitations rates will be
during the night and early morning, it will likely accumulate
rather than melt. A Winter Weather Advisory is now posted for the
Icy Strait corridor including Gustavus, Hoonah, Elfin Cove,
Pelican, and Juneau.

BFL

&&

.PREV DISCUSSION......ISSUED AT 248 PM AKDT Fri Mar 19 2021...

SHORT TERM.../Through Sunday/ The frontal band that moved through
the northern panhandle this morning has transitioned to the
southern half of the panhandle. Reported snow accumulations across
the north ranged from around 1 inch near Haines Customs to a
little over 6 inches at Pelican. The north is now dealing with
snow showers in the wake of the front coming in from the gulf.
These showers have been somewhat intense with visibilities
dropping to about a 1/2 mile at times, but they also have been
open cell in nature and move through rather quickly. Most areas of
the northern panhandle have been seeing more breaks in the clouds
rather then the showers as a result, and snow accumulations have
been light or its too warm for it to stick based on webcams.

Showers will linger through tonight especially in the southern
panhandle as what is left of the current system weakens and moves
off to the east. We get a break in the weather for late Fri night
and Sat morning and then the next front starts moving in for Sat
afternoon with more precip (rain and snow) and wind (gale for
northern gulf, small craft for other areas of the gulf and some
inner channel areas). Atmosphere over the panhandle looks cold
enough (850 mb temps below -6c initially, and 1000-850 mb
thicknesses below 1290) for precip to start as snow again for most
areas but southern areas will likely mix back to rain early on.
For the north, the low will be weakening as it comes in and will
be tracking across the central panhandle so a mix with rain north
of Angoon is unlikely Sat night. So expect accumulating snow for
the north Sat night with the highest accumulations (around 2 to 4
inches or possibly higher) likely along the Icy strait corridor
including Juneau. Precipitation and winds will begin to diminish
into Sunday as the system weakens and most inland.

Not many changes to the forecast overall as models in decent
agreement on timing and placement of features. Some uncertainly on
wind directions Fri evening (mainly in the Southern panhandle) and
on snow amounts for Sat night (snow amounts could end up being
higher and advisories may be needed).

LONG TERM.../Sunday through Friday night/...This extended range
forecast begins with a weak upper low situated over the eastern
Gulf and tracking east. To the south, a 150 kt jet will push the
low along and keep southeast Alaska on the cold side of the jet.
As the week progresses, upper flow remains relatively zonal until
Tuesday morning. At that time, a more amplified pattern moves
into the forecast area, with an upper ridge over the Panhandle and
a sharp, positively tilted trough upstream over Kodiak and the
far western Gulf. The trough passes over the Panhandle Tuesday
night, being pushed along by a broad northwesterly jet. By
Thursday afternoon, the jet over Southeast Alaska become very
zonal, but only temporarily. Another upper ridge moves over us by
Saturday morning, leaving Southeast Alaska on the warm side of the
jet at least for a little while.

At the surface, the long range forecast begins with an occluded
front draped over the Panhandle and emanating from a weakening
gale force low over the northeast Gulf. The front will push
through by late Sunday evening, but a mid level disturbance will
keep showers going over at least the northern half of the
Panhandle. By Tuesday morning, the next well organized front will
arrive over Southeast Alaska from the west. This system will be
just in the process of occluding as it arrives over the Panhandle
and the triple point will be located over the far southern
Panhandle, meaning that this will be a true warm frontal passage
over the inner channels. Model guidance this far out is divergent
on strength and track of the parent low, but landfall of the low
itself over the Panhandle is possible based on the EC and Canadian
solutions. Beyond that time, a surface high well to the south
will steer midlevel disturbances over the far northern Gulf, and
then southeast over the Panhandle. Stated differently, there are
no clear breaks in a generally wet/snowy pattern for the upcoming
week. -Fritsch/Cravens

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Weather Advisory from noon Saturday to noon AKDT Sunday
     for AKZ020>022-025.
MARINE...Gale Warning for PKZ052.
     Small Craft Advisory for PKZ022-036-041>043-051-053.

&&

EAL/Fritsch/BFL

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