Storm Warning 61, NWS Juneau, AK

818 
FZAK67 PAJK 020804 AAA
OFFAJK

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE JUNEAU AK
1104 PM AKST THU DEC 1 2016

OFFSHORE WATERS FORECAST FOR GULF OF ALASKA EAST OF 144W

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.

PKZ398-030215-
1104 PM AKST THU DEC 1 2016
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE LOW WILL MOVE NE INTO THE EASTERN GULF THU
NIGHT...THEN GO ONSHORE NEAR CAPE FAIRWEATHER BY EARLY FRI
EVENING. 

$$

PKZ310-030215-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
1104 PM AKST THU DEC 1 2016

...STORM WARNING TONIGHT THROUGH FRIDAY...

.TONIGHT...SE WIND 50 KT BECOMING W 45 KT LATE. SEAS 19 FT
BUILDING TO 24 FT LATE. RAIN IN THE EVENING. ISOLATED
THUNDERSTORMS. RAIN SHOWERS LATE.
.FRI...W WIND 55 KT. SEAS 26 FT. RAIN SHOWERS. 
.FRI NIGHT...W GALE TO 40 KT. SEAS 24 FT. RAIN SHOWERS IN THE
EVENING. 
.SAT...W GALE TO 35 KT. SEAS 22 FT. 
.SAT NIGHT...W WIND 30 KT DIMINISHING TO 20 KT LATE. SEAS 17 FT. 
.SUN...N WIND 20 KT. SEAS 12 FT. 
.MON...SE WIND 20 KT. SEAS 7 FT. 
.TUE...SE WIND 30 KT. SEAS 10 FT. 

$$

477 
FZAK67 PAJK 021254
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
354 AM AKST FRI DEC 2 2016

OFFSHORE WATERS FORECAST FOR GULF OF ALASKA EAST OF 144W

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.

PKZ398-030700-
354 AM AKST FRI DEC 2 2016
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE LOW WILL MOVE NE INTO THE EASTERN GULF THU
NIGHT...THEN GO ONSHORE NEAR CAPE FAIRWEATHER BY EARLY FRI
EVENING. 

$$

PKZ310-030700-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
354 AM AKST FRI DEC 2 2016

...STORM WARNING THROUGH TODAY...

.TODAY...W WIND 55 KT. SEAS 16 FT BUILDING TO 24 FT. RAIN
SHOWERS. 
.TONIGHT...W WIND 45 KT. SEAS 22 FT.
.SAT...W GALE TO 35 KT. SEAS 22 FT. 
.SAT NIGHT...W WIND 30 KT. SEAS 17 FT. SHOWERS IN THE EVENING.
SNOW SHOWERS. 
.SUN...N WIND 20 KT. SEAS 12 FT. 
.MON...SE WIND 20 KT. SEAS 7 FT. 
.TUE...SE GALE TO 35 KT. SEAS 10 FT. 

$$

227 
FZAK67 PAJK 030006
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
306 PM AKST FRI DEC 2 2016

OFFSHORE WATERS FORECAST FOR GULF OF ALASKA EAST OF 144W

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.

PKZ398-031815-
306 PM AKST FRI DEC 2 2016
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE LOW WILL MOVE NE INTO THE EASTERN GULF THU
NIGHT...THEN GO ONSHORE NEAR CAPE FAIRWEATHER BY EARLY FRI
EVENING. 

$$

PKZ310-031815-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
306 PM AKST FRI DEC 2 2016

...STORM WARNING TONIGHT AND FRIDAY...

.TONIGHT...SE WIND 30 KT INCREASING TO 50 KT IN THE EVENING...
THEN BECOMING W 45 KT LATE. SEAS 19 FT BUILDING TO 24 FT LATE.
RAIN IN THE EVENING...THEN RAIN SHOWERS LATE. 
.FRI...W WIND 55 KT. SEAS 26 FT. RAIN SHOWERS. 
.FRI NIGHT...W GALE TO 40 KT. SEAS 24 FT. RAIN SHOWERS IN THE
EVENING. 
.SAT...W GALE TO 35 KT. SEAS 22 FT. 
.SAT NIGHT...W WIND 30 KT DIMINISHING TO 20 KT LATE. SEAS 17 FT. 
.SUN...N WIND 20 KT. SEAS 12 FT. 
.MON...E WIND 15 KT. SEAS 7 FT. 
.TUE...SE WIND 30 KT. SEAS 10 FT. 

$$

200 
FZAK67 PAJK 030013 AAA
OFFAJK

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE JUNEAU AK
313 PM AKST FRI DEC 2 2016

OFFSHORE WATERS FORECAST FOR GULF OF ALASKA EAST OF 144W

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.

PKZ398-031815-
313 PM AKST FRI DEC 2 2016
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE LOW WILL MOVE ASHORE AROUND LITUYA BAY EARLY THIS
EVENING. MORE LOW PRESSURE WILL PERSIST OVER THE NORTHEAST GULF
THROUGH SAT AND MOVE INTO THE SE GULF THROUGH SUN. HIGH PRESSURE
WILL BUILD OVER NW CANADA THROUGH SUN.  

$$

PKZ310-031815-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
313 PM AKST FRI DEC 2 2016

...STORM WARNING EARLY THIS EVENING...

.TONIGHT...W WIND 50 KT DIMINISHING TO 35 KT LATE. SEAS 24 FT.
RAIN SHOWERS.
.SAT...W WIND 35 KT. SEAS 21 FT. RAIN SHOWERS. 
.SAT NIGHT...W WIND 30 KT. SEAS 17 FT. RAIN AND SNOW SHOWERS.
.SUN...W WIND 20 KT BECOMING N IN THE AFTERNOON. SEAS 13 FT. W
SWELL. RAIN AND SNOW SHOWERS IN THE MORNING. 
.SUN NIGHT...N WIND 20 KT. SEAS 9 FT. W SWELL. 
.MON...SE WIND 20 KT. SEAS 7 FT. 
.TUE...SE GALE TO 35 KT. SEAS 10 FT. 
.WED...E GALE TO 35 KT. SEAS 13 FT. 

$$

049 
FZAK67 PAJK 031240
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
340 AM AKST SAT DEC 3 2016

OFFSHORE WATERS FORECAST FOR GULF OF ALASKA EAST OF 144W

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.

PKZ398-040645-
340 AM AKST SAT DEC 3 2016
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
LOW PRESSURE WILL DRIFT SOUTHEAST ACROSS THE EASTERN GULF
THROUGH SUNDAY. HIGH PRESSURE OVER THE INTERIOR AND NORTHWEST
CANADA WILL BEGIN BUILDING SOUTH SATURDAY NIGHT.  

$$

PKZ310-040645-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
340 AM AKST SAT DEC 3 2016

...GALE WARNING THROUGH THIS EVENING...

.TODAY...W WIND 35 KT INCREASING TO 40 KT IN THE MORNING. SEAS 24
FT.
.TONIGHT...W WIND 35 KT DIMINISHING TO 30 KT LATE. SEAS SUBSIDING
TO 17 FT LATE.
.SUN...W WIND 20 KT BECOMING N IN THE AFTERNOON. SEAS 13 FT. W
SWELL. 
.SUN NIGHT...N WIND 20 KT. SEAS 10 FT. W SWELL. 
.MON...VARIABLE WIND 15 KT. SEAS 6 FT.
.TUE...SE GALE TO 35 KT. SEAS 9 FT. 
.WED...E GALE TO 35 KT. SEAS 11 FT. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
610 AM AKST Thu Dec 1 2016

.SHORT TERM...Busy weather to start with this morning as snow
falls across the Haines and Klondike Highways in an overrunning
event as a weather front moves inland early thursday. Do expect
preciptiation for southeast Alaska to diminish to light amounts
through midday.

A strong low is moving across the gulf and will move into the
northeast gulf Thursday night. This low has several similarities
with the Tuesday storm. Look for strong gusty winds to impact the
southern coastal areas Tonight as front approaches and moves
through in the evening. Then a strong westerly start to spread
back to the Prince of Wales Island area Late Thursday night. The
systems has its formation start in the mid pacific and satellite
imagery has water content over 200% of normal with up to 1.5
inches based on the moisture sampling.

As all the moisture with this next system spreads inland look for
another round of heavier snows spread back to the northern Lynn
canal areas along the highways near the borders. Have bumped up
the watch for heavy snow to a winter weather warning for late
Thursday into Friday.

.LONG TERM...Wind and snow from the low discussed above will still
be an issue at the start of the extended range forecast period. As
the low weakens Friday night over the northern gulf, a colder low
to mid level airmass will advect into the forecast area from the
west. This will lower snow levels and keep snow showers going a
bit longer. The surface low will then track off to the southeast
on Sunday and shower activity will diminish as a very cold near
surface airmass descends from the Yukon and interior Alaska.
Overnight lows will get very cold Sunday and Monday night with
single digit temperatures as far south as the Icy Strait corridor
and low 20s all the way down to the Dixon Entrance. At the same
time, a strong northerly pressure gradient will set up and produce
northerly gales over the far northern inner channels with small
craft winds as far south as Frederick Sound and eastern portions
of Sumner Strait. Gale force winds combined with these very cold
temperatures will likely produce freezing spray for the northern
inner channels.

Updated pressure and wind with NAM and GFS through Saturday night.
Used a blend of ECMWF and GFS for pressure and wind directions
through Monday night with GFS for wind speeds. PoP and QPF early
on from Canadian NH and SREF. Temps adjusted using ensemble GFS
with snow levels adjusted to temperatures. Overall forecast
confidence is average.

&&

.AJK Watches/Warnings/Advisories...
PUBLIC...Strong Wind until 6 AM AKST early this morning for AKZ021-024-
     026-028.
     High Wind Warning from 6 PM this evening to 6 AM AKST Friday for
     AKZ023-027-028.
     Strong Wind until 9 AM AKST this morning for AKZ025.
     Winter Weather Advisory until 9 AM AKST this morning for AKZ019.
     Winter Storm Warning from midnight tonight to 6 PM AKST Friday
     for AKZ018-019.
     Winter Storm Warning until 9 AM AKST this morning for AKZ018.
MARINE...Storm Warning for PKZ041>043-051.
     Gale Warning for PKZ021-022-031>036-052.
     Small Craft Advisory for PKZ011>013-053.
&&

Bezenek/Fritsch

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