Small Craft Advisory 212, NWS Juneau, AK

750 
FZAK51 PAJK 081255
CWFAJK

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
455 AM AKDT Thu Apr 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.

PKZ098-090345-
455 AM AKDT Thu Apr 8 2021
.SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS...
A storm force low and front will move into the AK Gulf Thu. The
front will move E across the Panhandle Thu while the low lingers 
in the NE gulf through Fri. 

$$

PKZ011-090345-
Glacier Bay-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...SE wind 15 kt increasing to 35 kt. Gusts to 50 kt. Seas 
building to 7 ft. Snow. Rain in the afternoon. 
.TONIGHT...SE wind 20 kt becoming N late. Seas 5 ft. Snow and
rain. 
.FRI...N wind 25 kt. Seas 5 ft. 
.FRI NIGHT...N wind 20 kt. Gusts to 35 kt. Seas 4 ft. 
.SAT...N wind 25 kt becoming NE 15 kt. Seas 5 ft. 
.SUN...SE wind 10 kt. Seas 2 ft or less. 
.MON...SE wind 15 kt. Seas 3 ft. 

$$

PKZ012-090345-
Northern Lynn Canal-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...Light winds becoming S and increasing to 35 kt in the the
afternoon, strongest winds south of Eldred Rock. Seas building to
6 ft. Snow. Rain in the afternoon.
.TONIGHT...S wind 25 kt becoming N late. Seas 5 ft. Rain and
snow. 
.FRI...N gale to 35 kt diminishing to 25 kt in the afternoon.
Seas 6 ft. 
.FRI NIGHT...N wind 30 kt. Seas 6 ft. 
.SAT...N wind 30 kt becoming S 10 kt. Seas 6 ft then 2 ft or
less. 
.SUN...S wind 15 kt. Seas 3 ft. 
.MON...S wind 15 kt. Seas 3 ft. 

$$

PKZ013-090345-
Southern Lynn Canal-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...SE wind increasing to 35 kt in the afternoon. Gusts to 
50 kt. Seas building to 7 ft. Snow in the morning. Rain and snow 
in the afternoon. 
.TONIGHT...SE wind 25 kt becoming N late. Gusts to 40 kt. Seas 5 
ft. Rain. Snow late. 
.FRI...N wind 30 kt. Seas 6 ft. 
.FRI NIGHT...N wind 30 kt. Seas 6 ft. 
.SAT...N wind 20 kt becoming SE 10 kt. Seas 4 ft then 2 ft
or less. 
.SUN...S wind 15 kt. Seas 3 ft. 
.MON...S wind 15 kt. Seas 3 ft. 

$$

PKZ021-090345-
Icy Strait-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...E wind 15 kt increasing to 35 kt in the afternoon. Seas 
3 ft building to 7 ft. Snow in the morning. Rain.
.TONIGHT...E wind 20 kt. Seas 4 ft. Rain.
.FRI...E wind 20 kt. Seas 4 ft. 
.FRI NIGHT...NE wind 20 kt. Seas 4 ft. 
.SAT...SE wind 10 kt. Seas 3 ft. 
.SUN...E wind 15 kt. Seas 3 ft. 
.MON...E wind 20 kt. Seas 4 ft. 

$$

PKZ022-090345-
Cross Sound-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...E wind 15 kt increasing to 35 kt in the afternoon. Seas 
4 ft building to 12 ft. Snow in the morning. Rain.
.TONIGHT...E wind 25 kt diminishing to 15 kt late. Seas 13 ft. S
swell. Rain.
.FRI...E wind 25 kt. Seas 13 ft. S swell. Snow showers in the
morning. 
.FRI NIGHT...E wind 20 kt. Seas 12 ft. S swell. 
.SAT...E wind 15 kt becoming S. Seas 9 ft subsiding to 5 ft.
.SUN...E wind 15 kt. Seas 5 ft. 
.MON...E wind 20 kt becoming S. Seas 8 ft. 

$$

PKZ031-090345-
Stephens Passage-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...SE wind 15 kt increasing to 40 kt in the afternoon. Seas
3 ft building to 7 ft. Rain and snow. 
.TONIGHT...SE wind 30 kt. Gusts to 45 kt. North of Taku Inlet, SE
wind 20 kt becoming NE late. Seas 7 ft. Rain in the evening. 
.FRI...SE wind 25 kt. Seas 5 ft. 
.FRI NIGHT...N wind 20 kt. Seas 4 ft. 
.SAT...S wind 15 kt. Seas 3 ft. 
.SUN...S wind 15 kt. Seas 3 ft. 
.MON...S wind 20 kt. Seas 4 ft. 

$$

PKZ032-090345-
Northern Chatham Strait-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING TODAY...

.TODAY...S wind 15 kt in the morning increasing to 40 kt. Seas 3 
ft building to 8 ft. Snow in the morning. Rain.
.TONIGHT...S wind 30 kt. Seas 6 ft. Rain in the evening. 
.FRI...S wind 20 kt becoming N in the afternoon. Seas 4 ft. 
.FRI NIGHT...N wind 20 kt. Seas 4 ft. 
.SAT...S wind 10 kt. Seas 3 ft. 
.SUN...S wind 15 kt. Seas 3 ft. 
.MON...S wind 20 kt. Seas 4 ft. 

$$

PKZ033-090345-
Southern Chatham Strait-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING TODAY...

.TODAY...S wind 10 kt in the morning becoming SE 40 kt. Gusts to 
55 kt. Seas building to 8 ft. Near ocean entrances, seas 6 ft 
building to 13 ft. Snow in the morning. Rain.
.TONIGHT...S wind 30 kt. Gusts to 40 kt. Seas 5 ft, except 18 ft 
near ocean entrances. Rain in the evening. 
.FRI...S wind 15 kt. Seas 3 ft, except 15 ft near ocean
entrances. 
.FRI NIGHT...S wind 15 kt. Seas 3 ft, except 13 ft near ocean
entrances. 
.SAT...S wind 15 kt. Seas 3 ft. 
.SUN...S wind 15 kt. Seas 3 ft. 
.MON...S wind 20 kt. Seas 4 ft. 

$$

PKZ034-090345-
Frederick Sound-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...SE wind 15 kt increasing to 35 kt in the afternoon. 
Gusts to 50 kt. Seas 3 ft building to 7 ft. Rain and snow. 
.TONIGHT...SE wind 30 kt. Gusts to 45 kt. Seas 6 ft. Rain in the 
evening. 
.FRI...E wind 20 kt diminishing to 10 kt. Seas 4 ft in the 
morning then 2 ft or less. 
.FRI NIGHT...W wind 15 kt. Seas 3 ft. 
.SAT...SE wind 15 kt. Seas 3 ft. 
.SUN...S wind 15 kt. Seas 3 ft. 
.MON...S wind 20 kt. Seas 4 ft. 

$$

PKZ035-090345-
Sumner Strait-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...E wind 10 kt in the morning becoming SE 35 kt. Seas 
building to 7 ft. Near ocean entrances, seas 5 ft building to 10 
ft. Rain in the afternoon. 
.TONIGHT...SE wind 25 kt becoming S late. Gusts to 40 kt. Seas
5 ft, except 13 ft near ocean entrances. Rain in the evening. 
.FRI...SW wind 15 kt. Seas 4 ft in the morning then 2 ft or
less. Near ocean entrances, seas 12 ft. 
.FRI NIGHT...W wind 10 kt. Seas 2 ft or less, except 11 ft
near ocean entrances. 
.SAT...S wind 20 kt. Seas 4 ft. 
.SUN...S wind 15 kt. Seas 3 ft. 
.MON...S wind 20 kt. Seas 4 ft. 

$$

PKZ036-090345-
Clarence Strait-
455 AM AKDT Thu Apr 8 2021

...GALE WARNING THIS AFTERNOON...

.TODAY...SE wind 10 kt increasing to 40 kt in the afternoon. Seas
building to 11 ft. Rain and snow in the morning. Rain in the 
afternoon. 
.TONIGHT...S wind 30 kt diminishing to 20 kt late. Seas 9 ft,
except 11 ft near ocean entrances. Rain.
.FRI...S wind 15 kt. Seas 4 ft, except 7 ft near ocean
entrances. 
.FRI NIGHT...SE wind 10 kt. Seas 3 ft, except 7 ft near ocean
entrances. 
.SAT...SE wind 15 kt. Seas building to 3 ft. 
.SUN...S wind 10 kt. Seas 3 ft. 
.MON...S wind 20 kt. Seas 5 ft. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
254 PM AKDT Wed Apr 7 2021

.SHORT TERM...Wednesday remains a break day, the remains of the
shower activity is still ending across the southern panhandle this
evening. The next system sweeps in from the west overnight,
impacting the northeast gulf starting after midnight with
increasing marine winds and snow starting. A little after sunrise
winds and snow will move into the coastal areas and northern inner
channels, and finally reaching the Southeast panhandle around
noon.

A lot of precipitation will start as snow from the northeast gulf
coast to the southern panhandle. Temperature will be warming at
the lower levels and the intensity of the warming, will determine
how much snow will fall across the region. Initial estimates that
up to 3 inches at locations near sea level, while observation and
higher elevations will not change over as fast or not all as the
front moves through and this locales could see 3 to 4 inches. The
Haines Highway and Klondike highways near the border are areas
that may see around 4 inches snow around the border.

Post frontal passage, a surface low should be persisting in the
northeast gulf near the coast and onshore flow and showers.
Northern portions likely to see a snow or mix precip type. The
southern should see more of a rain with a mix. Showers through
Friday and improving conditions headed into Saturday where they
will be tapering off from the northwest. The improving conditions
for Saturday so that will be our next break.

.LONG TERM.../Friday through Tuesday/ As of 10pm Tuesday. The
system impacting the panhandle will weaken and push inland through
the day Friday and Friday night. As the low moves into the
panhandle, many areas will see mixed precipitation or snow, though
think that any snowfall amounts will remain on the lower end. By
late Saturday morning into Saturday afternoon, signs are emerging
that there may well be a break on Saturday itself ahead of the
next system.

As the system departs, SE may enjoy drier conditions briefly
before entering an active weather pattern. Ridging will briefly
build before being quickly replaced by a shortwave trough Sunday.
This shortwave trough is associated with the next system, which
as it arrives on Sunday will bring with it more gusty winds and
could start as snow before transitioning to rain. Do think that
the warm air advection associated with this system will be
sufficient to encourage more rainfall from in conjunction with
the increasing daylight length. Still another system may arrive
after this towards Monday. Some signs are pointing towards this
system having a possible connection with moisture deeper in the
tropics, but confidence is lower in details this far out. Overall,
forecaster confidence is average.

&&

.AVIATION...Windy conditions Thursday looks to be one of the major
hazards. Strong low level winds the a stronger low level jet,
will result in low level wind shear at most of the TAF sites, to a
lesser extend at Haines and Skagway. Turbulence in the vicinity
of terrain in the wind blown areas will be predominate as well.

&&

.MARINE...Gale forces expected for early Thursday morning to
Thursday evening for much of the marine waters of Southeast
Alaska. Some areas of small craft winds of 30 kt in the northern
inner channels. A barrier jet near Cape Suckling is expected to
reach 50 kt storm as the front and low pass the area.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Strong Wind Thursday afternoon for Akz024-025>028.
     Strong Wind from Thursday morning through Thursday afternoon for
     Akz024-024.
     Strong Wind from Thursday morning through Thursday afternoon for
     Akz024.
     Strong Wind Thursday afternoon for Akz017-021.
     Strong Wind from Thursday morning through Thursday afternoon for
     Akz017.
MARINE...Storm Warning for PCs. Gale Warning for
PCs-031>036-041>043-051. Small Craft Advisory for
PCs>013-021-053.

&&

Bezenek/GFS

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