Storm Warning 39, NWS Juneau, AK

268 
FZAK52 PAJK 090043
CWFAEG

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
343 PM AKST Sun Nov 8 2020

Southeast Alaska Coastal Waters from Dixon Entrance to
Cape Suckling out 100 NM

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

PKZ099-091845-
343 PM AKST Sun Nov 8 2020
.SYNOPSIS FOR OUTSIDE WATERS...
A storm force low and associated front move into the E Gulf. The 
low weakens and moves southeast along the outer coast through 
Monday. Behind it, high pressure begins to build across the 
Central Gulf. 

$$

PKZ041-091845-
Dixon Entrance to Cape Decision-
343 PM AKST Sun Nov 8 2020

...GALE WARNING THROUGH THIS EVENING AND MONDAY AFTERNOON...

.TONIGHT...S wind 35 kt becoming W 30 kt late. Seas 11 ft 
building to 16 ft. Rain.
.MON...W wind 30 kt becoming 35 kt in the afternoon. Seas 20 ft. 
Showers.
.MON NIGHT...NW gale to 35 kt. Seas 22 ft. 
.TUE...N wind 25 kt. Seas 16 ft. W swell. 
.TUE NIGHT...N wind 15 kt. Seas 10 ft. W swell. 
.WED...S wind 30 kt becoming W. Seas 10 ft. 
.THU...NW wind 15 kt. Seas 20 ft. 
.FRI...W wind 20 kt. Seas 19 ft subsiding to 15 ft. 

$$

PKZ042-091845-
Cape Decision to Cape Edgecumbe-
343 PM AKST Sun Nov 8 2020

...GALE WARNING THROUGH THIS EVENING AND MONDAY AFTERNOON...

.TONIGHT...S wind 40 kt becoming W 25 kt late. Seas 17 ft. Rain
in the evening, then showers late. 
.MON...W wind 30 kt becoming 35 kt in the afternoon. Seas 20 ft. 
Showers.
.MON NIGHT...NW gale to 35 kt becoming N 25 kt late. Seas
20 ft. 
.TUE...N wind 20 kt. Seas 15 ft. W swell. 
.TUE NIGHT...S wind 20 kt. Seas 9 ft. W swell. 
.WED...S wind 25 kt. Seas 12 ft. 
.THU...W wind 15 kt. Seas 20 ft. 
.FRI...W wind 20 kt. Seas 17 ft. 

$$

PKZ043-091845-
Cape Edgecumbe to Cape Fairweather-
343 PM AKST Sun Nov 8 2020

...GALE WARNING THROUGH THIS EVENING...

.TONIGHT...S wind 40 kt becoming W 25 kt late. Seas 18 ft. SW 
swell. Rain. 
.MON...W wind 30 kt. Seas 21 ft. Rain showers in the morning. 
.MON NIGHT...NW wind 30 kt becoming NE late. Seas 19 ft. 
.TUE...NE wind 15 kt. Seas 13 ft. W swell. 
.TUE NIGHT...S wind 25 kt. Seas 8 ft. W swell. 
.WED...S wind 30 kt. Seas 12 ft. 
.THU...W wind 15 kt. Seas 19 ft. 
.FRI...SW wind 15 kt. Seas 15 ft. 

$$

PKZ051-091845-
Cape Fairweather to Icy Cape-
343 PM AKST Sun Nov 8 2020

...STORM WARNING EARLY THIS EVENING...

.TONIGHT...SE wind 50 kt becoming W 25 kt. Seas 20 ft. Rain.
.MON...NW wind 25 kt. Seas 21 ft. 
.MON NIGHT...NW wind 30 kt becoming NE late. Seas 17 ft. 
.TUE...E wind 15 kt. Seas 10 ft. W swell. 
.TUE NIGHT...SE wind 25 kt. Seas 8 ft. Rain.
.WED...SE gale to 35 kt. Seas 13 ft. 
.THU...W wind 10 kt. Seas 17 ft. 
.FRI...Light winds becoming SE 10 kt. Seas 12 ft. 

$$

PKZ052-091845-
Icy Cape to Cape Suckling-
343 PM AKST Sun Nov 8 2020

...GALE WARNING MONDAY...

.TONIGHT...SW wind 30 kt. Seas 21 ft. Rain early in the evening, 
then rain showers in the evening. 
.MON...NW wind 40 kt. Seas 21 ft. 
.MON NIGHT...NW gale to 35 kt diminishing to 20 kt late. Seas
17 ft subsiding to 12 ft late. 
.TUE...E wind 15 kt. Seas 9 ft. SW swell. 
.TUE NIGHT...SE gale to 35 kt. Seas 10 ft. Rain.
.WED...S wind 30 kt. Seas 13 ft. 
.THU...W wind 15 kt. Seas 15 ft. 
.FRI...E wind 10 kt becoming NW. Seas 10 ft. 

$$

087 
FZAK52 PAJK 091245
CWFAEG

Coastal Waters Forecast for Southeast Alaska
National Weather Service Juneau AK
345 AM AKST Mon Nov 9 2020

Southeast Alaska Coastal Waters from Dixon Entrance to
Cape Suckling out 100 NM

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

PKZ099-100645-
345 AM AKST Mon Nov 9 2020
.SYNOPSIS FOR OUTSIDE WATERS...
A low over the northern Gulf will move southeast along the outer 
coast through Monday. Behind it, high pressure will build across 
the Central Gulf. The next weather front will arrive over the 
eastern Gulf late Tuesday night. 

$$

PKZ041-100645-
Dixon Entrance to Cape Decision-
345 AM AKST Mon Nov 9 2020

...GALE WARNING THIS EVENING...

.TODAY...W wind 30 kt. Seas 15 ft building to 19 ft. Showers.
.TONIGHT...NW wind 35 kt. Seas 21 ft. 
.TUE...N wind 20 kt. Seas 15 ft. W swell. 
.TUE NIGHT...N wind 15 kt. Seas 10 ft. W swell. 
.WED...S gale to 35 kt. Seas 8 ft building to 13 ft. 
.THU...W wind 15 kt. Seas 16 ft. 
.FRI...W wind 20 kt. Seas 16 ft. 

$$

PKZ042-100645-
Cape Decision to Cape Edgecumbe-
345 AM AKST Mon Nov 9 2020

...GALE WARNING THIS EVENING...

.TODAY...W wind 30 kt. Seas 13 ft building to 20 ft. Showers.
.TONIGHT...NW wind 35 kt becoming N 25 kt late. Seas 20 ft. 
.TUE...N wind 20 kt. Seas 14 ft. W swell in the morning. 
.TUE NIGHT...S wind 15 kt. Seas 9 ft. W swell. 
.WED...S wind 30 kt. Seas 8 ft building to 13 ft. 
.THU...SW wind 15 kt. Seas 16 ft. 
.FRI...W wind 15 kt. Seas 17 ft subsiding to 11 ft. 

$$

PKZ043-100645-
Cape Edgecumbe to Cape Fairweather-
345 AM AKST Mon Nov 9 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...W wind 30 kt becoming NW in the afternoon. Seas 13 ft
building to 21 ft. Showers early in the morning.
.TONIGHT...NW wind 30 kt becoming NE late. Seas 19 ft. 
.TUE...NE wind 10 kt. Seas 13 ft subsiding to 9 ft in the
afternoon. W swell in the morning. 
.TUE NIGHT...S wind 20 kt. Seas 7 ft. W swell. 
.WED...SE gale to 35 kt. Seas 11 ft. 
.THU...S wind 20 kt becoming E. Seas 15 ft. 
.FRI...SW wind 15 kt becoming SE. Seas 16 ft subsiding to
10 ft. 

$$

PKZ051-100645-
Cape Fairweather to Icy Cape-
345 AM AKST Mon Nov 9 2020

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 25 kt. Seas 20 ft. Showers early in the morning.
.TONIGHT...NW wind 30 kt becoming NE late. Seas 17 ft. 
.TUE...E wind 15 kt. Seas 9 ft. W swell becoming SW in the
afternoon. 
.TUE NIGHT...SE wind 25 kt. Gusts to 35 kt out of interior
bays and passes. Seas 6 ft. SW swell. 
.WED...SE gale to 35 kt. Seas 12 ft. 
.THU...E wind 15 kt. Seas 13 ft. 
.FRI...E wind 10 kt. Seas 12 ft. 

$$

PKZ052-100645-
Icy Cape to Cape Suckling-
345 AM AKST Mon Nov 9 2020

...GALE WARNING THIS AFTERNOON THROUGH THIS EVENING...

.TODAY...W wind 25 kt becoming NW 40 kt in the afternoon. Seas 21
ft.
.TONIGHT...NW wind 35 kt diminishing to 20 kt late. Seas 17 ft
subsiding to 12 ft late. 
.TUE...E wind 15 kt. Seas 8 ft. SW swell. 
.TUE NIGHT...SE gale to 35 kt. Seas 9 ft. 
.WED...SE gale to 40 kt becoming E 25 kt. Seas 12 ft. 
.THU...E wind 20 kt. Seas 13 ft. 
.FRI...W wind 10 kt becoming E. Seas 10 ft. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
330 PM AKST Sat Nov 7 2020

.SHORT TERM...A low pressure system tracking NE along the
Aleutians has caused increasing high clouds over the region today,
keeping temperatures from warming as much as expected across the
north. The assoc warm front extending out across the NE gulf will
cause snow to move into Yakutat later Saturday night then become
mixed with and change over to rain by Sunday morning. The precip
will spread over the northern panhandle through Sunday morning,
then to the far SE corner of the panhandle later in the afternoon
or even early evening. Snow is expected initially, but strong
southerly winds will work quickly to change the snow to rain
through the day near sea level. Some accumulations of up to 2
inches are possible before the change over. For the Mendenhall
Valley, Haines, and Skagway closer to 4 inches are expected and
White Pass is expected to see 6-9 inches of snow.

Winds with the front increase to 35-50kt over the outside waters
on Sunday. Cross Sound increases to 35kt in the afternoon and
Clarence Strait to gale force as well Sunday evening. These strong
winds will work to raise snow levels above 1000ft across the
north and 2-5kft for the south Sunday evening. Heavy rain is
expected during this period.

The rain on top of a the snow pack across the north is going to
make for very poor roadway conditions. Additionally, storm drains
and culverts will likely clog with a mix or rainwater, slush, and
wet snow. Snow loading on roofs and sheds may become an issue as
well due to the very high water content of snow. Similar concerns
exist for aircraft stored outdoors and moored, unattended
vessels.

The low will track E-SE across the area through Monday. Expect
rain to transition to showers at that point and winds to shift
west behind the front, then northerly behind the low. CAA behind
the system will likely be enough for some snow to mix back in with
the showers Monday afternoon/evening, but the precip will also be
ending around that point and thus too short-lived for
accumulations.

.LONG TERM.../Monday through Saturday night/...As of Friday
evening. At the start of the extended forecast period, a low will
be sliding south along the coast. This low is expected to bring
heavy rain across the panhandle through Sunday. Rain chances will
begin to diminish through the day on Monday from North to South
with areas across the southern panhandle and along the coastal
mountains hanging onto the precipitation the longest. Winds
associated with the frontal band will be on the decreasing trend
Monday, diminishing from small craft through the southern inner
channels to 15 kts or less. Surface ridging quickly builds in
behind the exiting low pressure displacing it SSE of Haida Gwaii.
This will allow for a quick dry period Tuesday before the next
weather systems arrives late Tuesday night into early Wednesday.

By Wednesday, a parent low pressure system will be located in the
Bering Sea. Guidance supports an associated triple point low to
form along the Aleutians which will then slide east into the NE
Gulf coast. There is potential for this system to bring
significant QPF totals across the panhandle with periods of heavy
precipitation. By early Thursday morning, the parent low will
have moved into the Northern Gulf pushing onshore an additional
uniform frontal band. P-type is a concern with this system as
colder temperatures will be in place from Tuesdays CAA. Depending
on how strong the southerly WAA ahead of the approaching system
is, the northern panhandle could see significant snow
accumulations.

From Thursday through Saturday, a low looks to become locked in
on the central Gulf keeping precipitation chances elevated
through the remainder of the extended period as multiple vortices
approach the panhandle.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Weather Advisory from 7 AM to 6 PM AKST Sunday for AKZ025.
     Strong Wind Sunday afternoon for AKZ022.
     Winter Weather Advisory from 7 AM Sunday to midnight AKST Sunday
     night for AKZ019.
     Winter Storm Warning from 9 AM Sunday to 6 AM AKST Monday for
     AKZ018.
     Strong Wind Sunday afternoon for AKZ017-018.
MARINE...Storm Warning for PKZ052.
     Gale Warning for PKZ022-042-043-051.
     Small Craft Advisory for PKZ011>013-021-031>034-041-053.

&&

Ferrin/CC

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