Small Craft Advisory 145, NWS Juneau, AK

024 
FZAK51 PAJK 081248
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
348 AM AKST Mon Mar 8 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.

PKZ098-090400-
348 AM AKST Mon Mar 8 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
Northerly outflow winds continue through Monday as a low moves
south of Haida Gwaii. Winds will decrease Monday  night as the
low continues tracking south and east.  

$$

PKZ011-090400-
Glacier Bay-
348 AM AKST Mon Mar 8 2021

.TODAY...N wind 20 kt. Seas 4 ft. 
.TONIGHT...N wind 15 kt. Seas 3 ft. 
.TUE...Light winds. Seas 2 ft or less. 
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 15 kt. Seas building to 4 ft. 
.THU...S wind 20 kt. Seas 4 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 

$$

PKZ012-090400-
Northern Lynn Canal-
348 AM AKST Mon Mar 8 2021

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

.TODAY...N wind 30 kt. Gusts to 45 kt. Seas 6 ft. Freezing spray
early in the morning. 
.TONIGHT...N wind 30 kt. Seas 6 ft. Freezing spray. 
.TUE...N wind 15 kt becoming SE in the afternoon. Seas 3 ft
in the morning then 2 ft or less. 
.TUE NIGHT...SE wind 10 kt. Seas 2 ft or less. 
.WED...S wind 20 kt. Seas 4 ft. 
.THU...S wind 20 kt. Seas 4 ft. 
.FRI...N wind 30 kt. Seas 6 ft. 

$$

PKZ013-090400-
Southern Lynn Canal-
348 AM AKST Mon Mar 8 2021

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

.TODAY...N wind 30 kt. Gusts to 45 kt. Seas 6 ft. 
.TONIGHT...N wind 30 kt. Seas 6 ft. 
.TUE...N wind 15 kt becoming S in the afternoon. Seas 3 ft in
the morning then 2 ft or less. 
.TUE NIGHT...S wind 10 kt. Seas 2 ft or less. 
.WED...S wind 20 kt. Seas 4 ft. 
.THU...S wind 20 kt. Seas 4 ft. 
.FRI...N wind 25 kt. Seas 5 ft. 

$$

PKZ021-090400-
Icy Strait-
348 AM AKST Mon Mar 8 2021

.TODAY...N wind 20 kt. Seas 4 ft. 
.TONIGHT...N wind 15 kt. Seas 3 ft. 
.TUE...Light winds becoming E 10 kt in the afternoon. Seas
2 ft or less. 
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...E wind 15 kt becoming SE 25 kt. Seas 4 ft. 
.THU...S wind 20 kt. Seas 5 ft. 
.FRI...E wind 20 kt. Seas 4 ft. 

$$

PKZ022-090400-
Cross Sound-
348 AM AKST Mon Mar 8 2021

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

.TODAY...NE wind 25 kt. Seas 6 ft. 
.TONIGHT...NE wind 15 kt. Seas 5 ft. 
.TUE...Light winds becoming W 10 kt in the afternoon. Seas
4 ft. 
.TUE NIGHT...W wind 10 kt. Seas 4 ft. 
.WED...E wind 15 kt increasing to 25 kt. Seas 6 ft building
to 10 ft. 
.THU...W wind 25 kt becoming 15 kt. Seas 12 ft. 
.FRI...NE wind 20 kt. Seas 8 ft. 

$$

PKZ031-090400-
Stephens Passage-
348 AM AKST Mon Mar 8 2021

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

.TODAY...NW wind 25 kt. Gusts to 40 kt. Seas 5 ft. Snow showers
early in the morning. 
.TONIGHT...N wind 20 kt. Seas 4 ft. 
.TUE...N wind 15 kt becoming E in the afternoon. Seas 3 ft in
the morning then 2 ft or less. 
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 20 kt. Seas 4 ft. 
.THU...SE wind 15 kt. Seas 3 ft. 
.FRI...SE wind 20 kt. Seas 4 ft. 

$$

PKZ032-090400-
Northern Chatham Strait-
348 AM AKST Mon Mar 8 2021

.TODAY...N wind 20 kt. Seas 4 ft. Rain showers early in the
morning. 
.TONIGHT...N wind 20 kt. Seas 4 ft. 
.TUE...N wind 15 kt becoming SE in the afternoon. Seas 3 ft
in the morning then 2 ft or less. 
.TUE NIGHT...SE wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 20 kt. Seas 4 ft. 
.THU...SW wind 20 kt becoming SE. Seas 4 ft. 
.FRI...N wind 20 kt becoming SE. Seas 4 ft. 

$$

PKZ033-090400-
Southern Chatham Strait-
348 AM AKST Mon Mar 8 2021

.TODAY...N wind 20 kt. Seas 4 ft, except 7 ft near ocean
entrances. Rain showers early in the morning. 
.TONIGHT...N wind 20 kt. Seas 4 ft. 
.TUE...N wind 15 kt. Seas 3 ft in the morning then 2 ft or
less. 
.TUE NIGHT...NW wind 10 kt. Seas 2 ft or less. 
.WED...S wind 20 kt. Seas 4 ft. 
.THU...SW wind 15 kt becoming SE. Seas 3 ft. 
.FRI...S wind 20 kt. Seas 4 ft. 

$$

PKZ034-090400-
Frederick Sound-
348 AM AKST Mon Mar 8 2021

.TODAY...N wind 15 kt. Seas 3 ft. Snow and rain showers early in 
the morning, then snow showers in the morning. 
.TONIGHT...N wind 15 kt. Seas 3 ft. 
.TUE...N wind 15 kt. Seas 3 ft in the morning then 2 ft or
less. 
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 20 kt. Seas 4 ft. 
.THU...S wind 15 kt. Seas 3 ft. 
.FRI...SE wind 20 kt. Seas 4 ft. 

$$

PKZ035-090400-
Sumner Strait-
348 AM AKST Mon Mar 8 2021

.TODAY...Light winds becoming N 10 kt. Seas 2 ft or less. Rain
showers. 
.TONIGHT...N wind 15 kt. Seas 3 ft. 
.TUE...N wind 10 kt becoming W in the afternoon. Seas
2 ft or less. 
.TUE NIGHT...NW wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 15 kt. Seas building to 4 ft. 
.THU...SW wind 10 kt becoming SE. Seas 2 ft or less. 
.FRI...S wind 20 kt. Seas 4 ft. 

$$

PKZ036-090400-
Clarence Strait-
348 AM AKST Mon Mar 8 2021

.TODAY...SE wind 10 kt becoming NW in the afternoon. Seas 2 ft or
less.
.TONIGHT...NW wind 10 kt. Seas 2 ft or less. Rain showers in the
evening. 
.TUE...NW wind 15 kt. Seas building to 3 ft in the afternoon.
.TUE NIGHT...NW wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 15 kt. Seas building to 4 ft. 
.THU...NW wind 20 kt becoming SE. Seas 4 ft. 
.FRI...S gale to 35 kt. Seas 11 ft. 

$$

789 
FZAK51 PAJK 090030
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
330 PM AKST Mon Mar 8 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.

PKZ098-091800-
330 PM AKST Mon Mar 8 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A ridge of high pressure over the Gulf of Alaska will shift east
as a low west of Washington and Oregon continues to  weaken and
drift south through Tuesday night. A gale force front  will
track east over the Gulf on Wednesday.  

$$

PKZ011-091800-
Glacier Bay-
330 PM AKST Mon Mar 8 2021

.TONIGHT...N wind 15 kt. Seas 3 ft.
.TUE...Light winds. Seas 2 ft or less. 
.TUE NIGHT...SE wind 10 kt in the evening becoming light.
Seas 2 ft or less. 
.WED...E wind 10 kt. Seas 2 ft or less. Rain and snow. 
.WED NIGHT...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft. 
.THU...S wind 20 kt. Seas 4 ft. 
.FRI...N wind 20 kt. Seas 4 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 

$$

PKZ012-091800-
Northern Lynn Canal-
330 PM AKST Mon Mar 8 2021

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

.TONIGHT...N wind 30 kt. Gusts to 45 kt. Seas 6 ft. Freezing
spray. 
.TUE...N wind 15 kt becoming SE 10 kt in the afternoon. Seas 3 ft
in the morning then 2 ft or less. 
.TUE NIGHT...NW wind 10 kt in the evening becoming light.
Seas 2 ft or less. 
.WED...S wind 15 kt. Seas 3 ft. Snow.
.WED NIGHT...S wind 20 kt. Seas 4 ft. Snow and rain. 
.THU...S wind 20 kt. Seas 4 ft. 
.FRI...N wind 30 kt. Seas 6 ft. 
.SAT...N wind 25 kt. Seas 5 ft. 

$$

PKZ013-091800-
Southern Lynn Canal-
330 PM AKST Mon Mar 8 2021

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

.TONIGHT...N wind 30 kt. Gusts to 45 kt out of interior passes. 
Seas 6 ft. 
.TUE...N wind 15 kt becoming S 10 kt in the afternoon. Seas 3 ft 
in the morning then 2 ft or less. 
.TUE NIGHT...Light winds becoming E 10 kt late. Seas 2 ft or
less. 
.WED...S wind 15 kt. Seas 3 ft. 
.WED NIGHT...S wind 20 kt. Seas 4 ft. Rain and snow. 
.THU...S wind 20 kt. Seas 4 ft. 
.FRI...N wind 25 kt. Seas 5 ft. 
.SAT...N wind 20 kt. Seas 4 ft. 

$$

PKZ021-091800-
Icy Strait-
330 PM AKST Mon Mar 8 2021

.TONIGHT...Variable winds to 10 kt. Seas 2 ft or less. 
.TUE...E wind 10 kt. Seas 2 ft or less. 
.TUE NIGHT...Light winds becoming E 10 kt late. Seas 2 ft or
less. 
.WED...E wind 15 kt. Seas 3 ft. Rain.
.WED NIGHT...SE wind 25 kt. Seas 5 ft. 
.THU...S wind 20 kt. Seas 4 ft. 
.FRI...E wind 20 kt. Seas 4 ft. 
.SAT...E wind 20 kt. Seas 4 ft. 

$$

PKZ022-091800-
Cross Sound-
330 PM AKST Mon Mar 8 2021

.TONIGHT...NE wind 20 kt. Seas 4 ft. 
.TUE...Light winds becoming W 10 kt in the afternoon. Seas
2 ft or less. 
.TUE NIGHT...W wind 10 kt becoming E 15 kt late. Seas building to
3 ft late. 
.WED...E wind 15 kt. Seas 3 ft. Rain.
.WED NIGHT...E wind 25 kt. Seas 8 ft. Rain.
.THU...W wind 25 kt becoming SW 15 kt. Seas 12 ft. 
.FRI...NE wind 20 kt. Seas 8 ft. 
.SAT...E wind 15 kt. Seas 10 ft. 

$$

PKZ031-091800-
Stephens Passage-
330 PM AKST Mon Mar 8 2021

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

.TONIGHT...N wind 25 kt diminishing late. Seas 5 ft. 
.TUE...N wind 15 kt becoming E 10 kt in the afternoon. Seas 3 ft 
in the morning then 2 ft or less. 
.TUE NIGHT...E wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 15 kt. Seas 3 ft. 
.WED NIGHT...SE wind 20 kt. Seas 4 ft. Rain and snow. 
.THU...SE wind 20 kt. Seas 4 ft. 
.FRI...SE wind 20 kt. Seas 4 ft. 
.SAT...N wind 15 kt. Seas 3 ft. 

$$

PKZ032-091800-
Northern Chatham Strait-
330 PM AKST Mon Mar 8 2021

.TONIGHT...N wind 20 kt. Seas 4 ft. 
.TUE...N wind 15 kt becoming SE 10 kt in the afternoon. Seas 3 ft
in the morning then 2 ft or less. 
.TUE NIGHT...W wind 10 kt becoming SE late. Seas 2 ft or
less. 
.WED...SE wind 15 kt. Seas 3 ft. 
.WED NIGHT...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft.
Rain.
.THU...SW wind 20 kt becoming SE. Seas 4 ft. 
.FRI...N wind 20 kt becoming SE. Seas 4 ft. 
.SAT...N wind 15 kt. Seas building to 3 ft. 

$$

PKZ033-091800-
Southern Chatham Strait-
330 PM AKST Mon Mar 8 2021

.TONIGHT...N wind 20 kt. Seas 4 ft. 
.TUE...N wind 15 kt. Seas 3 ft in the morning then 2 ft or
less. 
.TUE NIGHT...W wind 10 kt. Seas 2 ft or less. 
.WED...S wind 15 kt. Seas 3 ft. 
.WED NIGHT...S wind 20 kt. Gusts to 35 kt. Seas 4 ft. 
.THU...SW wind 15 kt becoming SE. Seas 3 ft. 
.FRI...S wind 20 kt. Seas 4 ft. 
.SAT...E wind 10 kt becoming N. Seas 2 ft or less. 

$$

PKZ034-091800-
Frederick Sound-
330 PM AKST Mon Mar 8 2021

.TONIGHT...N wind 15 kt. Seas 3 ft. 
.TUE...N wind 15 kt. Seas 3 ft. 
.TUE NIGHT...E wind 10 kt in the evening becoming light. Seas
2 ft or less. 
.WED...SE wind 15 kt. Seas 3 ft. 
.WED NIGHT...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft.
Snow.
.THU...S wind 15 kt. Seas 3 ft. 
.FRI...SE wind 20 kt. Seas 4 ft. 
.SAT...E wind 10 kt becoming N. Seas building to 3 ft. 

$$

PKZ035-091800-
Sumner Strait-
330 PM AKST Mon Mar 8 2021

.TONIGHT...N wind 15 kt. Seas 3 ft. Rain showers early in the 
evening. 
.TUE...N wind 10 kt becoming W 15 kt in the afternoon. Seas 
building to 3 ft in the afternoon. 
.TUE NIGHT...NW wind 10 kt in the evening becoming light.
Seas 2 ft or less. 
.WED...S wind 10 kt. Seas 2 ft or less. 
.WED NIGHT...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft. 
.THU...SW wind 10 kt becoming SE. Seas 2 ft or less. 
.FRI...S wind 20 kt. Seas 4 ft. 
.SAT...SE wind 10 kt becoming N. Seas 2 ft or less. 

$$

PKZ036-091800-
Clarence Strait-
330 PM AKST Mon Mar 8 2021

.TONIGHT...NW winds 10 kt. Seas 2 ft or less.
.TUE...NW wind 15 kt. Seas 3 ft in the afternoon.
.TUE NIGHT...NW wind 10 kt. Seas 2 ft or less. 
.WED...S wind 10 kt. Seas 2 ft or less. 
.WED NIGHT...SE wind 20 kt. Seas 4 ft. Rain.
.THU...NW wind 20 kt becoming SE. Seas 4 ft. 
.FRI...S gale to 35 kt. Seas 7 ft. 
.SAT...SE wind 10 kt. Seas 4 ft. 

$$

158 
FZAK51 PAJK 091254
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
354 AM AKST Tue Mar 9 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.

PKZ098-100345-
354 AM AKST Tue Mar 9 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A ridge of high pressure over the Gulf of Alaska will shift east
through Tuesday night. A gale force front will track  east over
the Gulf on Wednesday.  

$$

PKZ011-100345-
Glacier Bay-
354 AM AKST Tue Mar 9 2021

.TODAY...N wind 10 kt early in the morning becoming light. Seas
2 ft or less. 
.TONIGHT...SE wind 10 kt in the evening becoming light. Seas 2 ft
or less. 
.WED...E wind 10 kt. Seas 2 ft or less. 
.WED NIGHT...SE wind 15 kt. Seas 3 ft. Snow.
.THU...SE wind 10 kt. Seas 3 ft. 
.FRI...N wind 15 kt becoming NW 25 kt. Seas 4 ft. 
.SAT...NW wind 25 kt. Seas 5 ft. 

$$

PKZ012-100345-
Northern Lynn Canal-
354 AM AKST Tue Mar 9 2021

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

.TODAY...N wind 25 kt diminishing to 15 kt in the morning, then
becoming SE in the afternoon. Seas 4 ft early in the morning then
2 ft or less. Freezing spray early in the morning. 
.TONIGHT...NW wind 10 kt in the evening becoming light. Seas 2 ft
or less. 
.WED...S wind 15 kt. Seas 3 ft. Rain in the afternoon. 
.WED NIGHT...S wind 20 kt. Seas 4 ft. 
.THU...S wind 15 kt. Seas 3 ft. 
.FRI...N wind 15 kt becoming NW 25 kt. Seas 4 ft. 
.SAT...NW wind 25 kt. Seas 5 ft. 

$$

PKZ013-100345-
Southern Lynn Canal-
354 AM AKST Tue Mar 9 2021

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

.TODAY...N wind 25 kt diminishing to 15 kt in the morning, then
becoming S in the afternoon. Seas 4 ft early in the morning then
2 ft or less. 
.TONIGHT...Light winds becoming E 10 kt late. Seas 2 ft or less. 
.WED...S wind 15 kt. Seas 3 ft. 
.WED NIGHT...S wind 20 kt. Seas 4 ft. Rain.
.THU...SE wind 10 kt. Seas 3 ft. 
.FRI...Light winds becoming N 15 kt. Seas building to 3 ft. 
.SAT...N wind 20 kt. Seas 4 ft. 

$$

PKZ021-100345-
Icy Strait-
354 AM AKST Tue Mar 9 2021

.TODAY...N wind 10 kt becoming E. Seas 2 ft or less. 
.TONIGHT...Light winds becoming E 10 kt late. Seas 2 ft or less. 
.WED...E wind 15 kt. Seas 3 ft. 
.WED NIGHT...SE wind 20 kt. Seas 4 ft. 
.THU...W wind 10 kt. Seas 3 ft. 
.FRI...Light winds becoming E 10 kt. Seas 2 ft or less. 
.SAT...E wind 15 kt. Seas 3 ft. 

$$

PKZ022-100345-
Cross Sound-
354 AM AKST Tue Mar 9 2021

.TODAY...NE wind 10 kt early in the morning becoming light, then
becoming W 10 kt in the afternoon. Seas 4 ft. 
.TONIGHT...W wind 10 kt becoming NE late. Seas 4 ft. 
.WED...E wind 15 kt. Seas 5 ft. Rain in the afternoon. 
.WED NIGHT...E wind 20 kt. Seas 9 ft. Rain.
.THU...W wind 15 kt. Seas 10 ft. 
.FRI...E wind 15 kt. Seas 8 ft. 
.SAT...E wind 15 kt. Seas 5 ft. 

$$

PKZ031-100345-
Stephens Passage-
354 AM AKST Tue Mar 9 2021

.TODAY...N wind 20 kt becoming SE 10 kt in the afternoon. Seas
4 ft early in the morning then 2 ft or less. 
.TONIGHT...SE wind 10 kt. Seas 2 ft or less. 
.WED...SE wind 15 kt. Seas 3 ft. 
.WED NIGHT...SE wind 20 kt. Seas 4 ft. Snow with rain. 
.THU...S wind 10 kt. Seas 2 ft or less. 
.FRI...Light winds becoming SE 10 kt. Seas 2 ft or less. 
.SAT...NW wind 15 kt. Seas 4 ft. 

$$

PKZ032-100345-
Northern Chatham Strait-
354 AM AKST Tue Mar 9 2021

.TODAY...N wind 20 kt becoming SE 10 kt in the afternoon. Seas
4 ft early in the morning then 2 ft or less. 
.TONIGHT...W wind 10 kt becoming SE late. Seas 2 ft or less. 
.WED...SE wind 15 kt. Seas 3 ft. 
.WED NIGHT...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft.
Rain.
.THU...S wind 15 kt. Seas 3 ft. 
.FRI...Light winds. Seas 2 ft or less. 
.SAT...N wind 15 kt. Seas building to 3 ft. 

$$

PKZ033-100345-
Southern Chatham Strait-
354 AM AKST Tue Mar 9 2021

.TODAY...N wind 15 kt. Seas 4 ft early in the morning then 2 ft
or less. 
.TONIGHT...W wind 10 kt. Seas 2 ft or less. 
.WED...S wind 15 kt. Seas building to 3 ft in the
afternoon. 
.WED NIGHT...S wind 20 kt. Gusts to 35 kt. Seas 4 ft,
except 7 ft near ocean entrances. 
.THU...S wind 10 kt. Seas 2 ft or less. 
.FRI...Light winds. Seas 2 ft or less. 
.SAT...N wind 10 kt. Seas 2 ft or less. 

$$

PKZ034-100345-
Frederick Sound-
354 AM AKST Tue Mar 9 2021

.TODAY...N wind 15 kt. Seas 3 ft early in the morning then 2 ft
or less. 
.TONIGHT...E wind 10 kt in the evening becoming light. Seas 2 ft
or less. 
.WED...SE wind 15 kt. Seas 3 ft. 
.WED NIGHT...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft.
Snow.
.THU...SE wind 10 kt. Seas 3 ft. 
.FRI...SE wind 15 kt becoming light. Seas 3 ft. 
.SAT...E wind 15 kt. Seas 3 ft. 

$$

PKZ035-100345-
Sumner Strait-
354 AM AKST Tue Mar 9 2021

.TODAY...N wind 15 kt becoming W in the afternoon. Seas 3 ft
early in the morning then 2 ft or less, then then 3 ft in the
afternoon. 
.TONIGHT...NW wind 10 kt in the evening becoming light. Seas 2 ft
or less. 
.WED...NE wind 10 kt becoming S in the afternoon. Seas 2 ft
or less. 
.WED NIGHT...SE wind 20 kt. Gusts to 35 kt. Seas 4 ft.
Rain.
.THU...SW wind 10 kt becoming SE. Seas 2 ft or less. 
.FRI...SE wind 10 kt becoming light. Seas 2 ft or less. 
.SAT...E wind 10 kt becoming N. Seas 2 ft or less. 

$$

PKZ036-100345-
Clarence Strait-
354 AM AKST Tue Mar 9 2021

.TODAY...NW wind 10 kt. Seas building to 3 ft in the afternoon. 
.TONIGHT...NW wind 10 kt. Seas 2 ft or less. 
.WED...NW wind 10 kt becoming S in the afternoon. Seas 2 ft
or less. 
.WED NIGHT...SE wind 15 kt. Seas 3 ft. Rain.
.THU...S wind 15 kt. Seas 4 ft. 
.FRI...NW wind 15 kt becoming SE. Seas 4 ft. 
.SAT...SE wind 10 kt becoming NW. Seas 2 ft or less. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
247 PM AKST Sun Mar 7 2021

SHORT TERM.../Through Monday night/...A low well to the south that
produced showers last night and yesterday remains nearly
stationary near 50N and continues to rotate bands of showers as
far north as the southern inner channels. Forecast thinking
yesterday was that one more band of showers would impact Southeast
Alaska tonight through Monday night. That band of showers is
still in the forecast, but looking at today's model data, the
source for that band does not appear to be the low to the south. A
closer look reveals an upper level trough dropping south from the
Yukon with a substantial amount of mid level vorticity. This is
an interesting point of note for meteorologists, but is really
just academic. The bottom line is that there will be showers
developing over the central panhandle tonight and spreading south
through Monday and Monday night. Models are consistent with regard
to a colder low level airmass dropping south from the Yukon
through this short term forecast period. In addition to decreasing
high and low temperatures for the next couple days, the upcoming
shower activity is also expected to produce measurable snowfall
beginning tonight. Daytime temps tomorrow should transition the
snow back to rain on Monday, but overnight lows Monday night will
cause a transition back to snow where showers persist.

The low to the south and high pressure over the interior and
northwest Canada will maintain a northerly pressure gradient. This
will cause northerly small craft winds over Lynn Canal and
northern Stephens Passage through Monday night. This plus the
colder air coming from Canada will result in light freezing spray
for Lynn Canal at night both tonight and Monday night.

As the shower activity moves off to the south, skies will begin
to clear. Look for partly cloudy to mostly clear skies over the
northern half of the Panhandle by Monday morning and over the
southern half by Tuesday morning. That'll be my day off, so I
think I'll go flight-seeing and maybe grab lunch in Sitka.

LONG TERM.../Tuesday through Sunday/...Before the upper level
trough moves out on Tuesday, mostly clear skies are expected
across the panhandle during the day. Guidance has slowed the next
weather system and will make it into the panhandle by early
Wednesday with widespread precipitation in the afternoon. Once
this system moves south Thursday, it may be followed by a weak
atmospheric river impacting the southern panhandle. Models are
optimistic and show another chance for dry weather and clear skies
on Saturday.

Models have slowed the start of precipitation from our next system
to early Wednesday morning. Precipitation will start in Yakutat,
become widespread in the afternoon, and then move south. Winds
will pick up with this front, and small craft advisories can be
anticipated along the outer coast and inner channels. Snow
possibilities for midweek are uncertain and could range up to
advisory totals in areas including and north of Angoon and
Juneau. The southern portion of the panhandle is forecasted to
receive additional precipitation from a weak atmospheric river
late on Thursday, though there is uncertainty on if the track of
this system will move further south.

The long term precipitation forecast is a blend of GFS/NAM for
Tuesday, and nudged to the GFS for the remainder of the week. This
adjusted the surface weather front timing and speed. Temperatures
for Friday and Saturday were trended down based on MOS and plume
guidance. Overall confidence is moderate for temperature changes,
but below average on which locations will see the most
precipitation through the week.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Small Craft Advisory for PKZ012-013-022-031-041>043-051-052.

&&

Fritsch/KRT

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