Storm Warning 26, NWS Juneau, AK

316 
FZAK67 PAJK 030302 AAA
OFFAJK

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE JUNEAU AK
702 PM AKDT SUN APR 2 2017

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.

PKZ398-032115-
702 PM AKDT SUN APR 2 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A WEAK PRESSURE TROUGH WILL PROPAGATE NE ACROSS THE  EASTERN
GULF SUNDAY NIGHT. THEN A STORM FORCE FRONT WILL MOVE INTO THE
EASTERN GULF MONDAY. 

$$

PKZ310-032115-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
702 PM AKDT SUN APR 2 2017

...STORM WARNING MONDAY...

.TONIGHT...S WIND 25 KT. SEAS 11 FT. SW SWELL EARLY IN THE
EVENING. 
.MON...SE WIND 50 KT. SEAS 15 FT. RAIN IN THE AFTERNOON. 
.MON NIGHT...SE GALE TO 45 KT DIMINISHING TO GALE TO 35 KT
LATE. SEAS 19 FT. RAIN.
.TUE...SE GALE TO 35 KT. SEAS 19 FT. RAIN.
.TUE NIGHT...SE GALE TO 40 KT. SEAS 22 FT. RAIN.
.WED...S GALE TO 40 KT. SEAS 19 FT. 
.THU...SE WIND 25 KT. SEAS 13 FT. 
.FRI...WIND VARIABLE LESS THAN 15 KT. SEAS 8 FT. 

$$

180 
FZAK67 PAJK 031112
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
312 AM AKDT MON APR 3 2017

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.

PKZ398-040515-
312 AM AKDT MON APR 3 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE FRONT WILL MOVE INTO THE EASTERN GULF TODAY AND 
STALL OFFSHORE TONIGHT. A SECOND STORM FORCE FRONT WILL LIFT INTO 
THE SOUTHEAST GULF LATE TUESDAY. 

$$

PKZ310-040515-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
312 AM AKDT MON APR 3 2017

...STORM WARNING TODAY THROUGH TONIGHT...

.TODAY...SE WIND 30 KT INCREASING TO 50 KT. SEAS 11 FT BUILDING
TO 16 FT. RAIN.
.TONIGHT...SE WIND 50 KT DIMINISHING. SEAS 19 FT. RAIN IN THE 
EVENING.
.TUE...E GALE TO 35 KT INCREASING TO GALE TO 45 KT IN THE
AFTERNOON. SEAS 19 FT. RAIN IN THE AFTERNOON. 
.TUE NIGHT...SE GALE TO 40 KT. SEAS 19 FT. RAIN.
.WED...S GALE TO 40 KT. SEAS 18 FT. 
.THU...SE WIND 25 KT. SEAS 13 FT. 
.FRI...WIND VARIABLE LESS THAN 15 KT. SEAS 8 FT. 

$$

879 
FZAK67 PAJK 032315
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
315 PM AKDT MON APR 3 2017

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.

PKZ398-041715-
315 PM AKDT MON APR 3 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE FRONT OVER THE EASTERN GULF WILL STALL THERE MON
NIGHT. ANOTHER STORM FORCE FRONT WILL MOVE N INTO THE SE GULF
TUE AFTERNOON, THEN REACH THE FAR N GULF BY WED MORNING. 

$$

PKZ310-041715-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
315 PM AKDT MON APR 3 2017

...STORM WARNING TONIGHT AND TUESDAY...

.TONIGHT...SE WIND 50 KT DIMINISHING TO 40 KT LATE. SEAS 20 FT.
RAIN IN THE EVENING. 
.TUE...E WIND 40 KT INCREASING TO 50 KT IN THE AFTERNOON. SEAS 
20 FT. RAIN.
.TUE NIGHT...SE GALE TO 45 KT. SEAS 20 FT. RAIN.
.WED...S GALE TO 40 KT DIMINISHING TO 30 KT IN THE AFTERNOON. 
SEAS 20 FT. RAIN.
.WED NIGHT...S WIND 30 KT. SEAS 15 FT. 
.THU...SE WIND 25 KT. SEAS 12 FT. 
.FRI...WIND VARIABLE LESS THAN 15 KT. SEAS 8 FT. 
.SAT...NW WIND 15 KT. SEAS 7 FT. 

$$

234 
FZAK67 PAJK 040343 AAA
OFFAJK

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE JUNEAU AK
743 PM AKDT MON APR 3 2017

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.

PKZ398-042145-
743 PM AKDT MON APR 3 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE FRONT OVER THE EASTERN GULF WILL STALL THERE MON
NIGHT. ANOTHER STORM FORCE FRONT WILL MOVE N INTO THE SE GULF
TUE AFTERNOON, THEN REACH THE FAR N GULF BY WED MORNING. 

$$

PKZ310-042145-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
743 PM AKDT MON APR 3 2017

...STORM WARNING TONIGHT AND TUESDAY...

.TONIGHT...SE WIND 50 KT DIMINISHING TO 40 KT LATE. SEAS 20 FT.
RAIN IN THE EVENING. 
.TUE...E WIND 40 KT INCREASING TO 50 KT IN THE AFTERNOON. SEAS 
20 FT. RAIN.
.TUE NIGHT...SE GALE TO 45 KT. SEAS 20 FT. RAIN.
.WED...S GALE TO 40 KT DIMINISHING TO 30 KT IN THE AFTERNOON. 
SEAS 20 FT. RAIN.
.WED NIGHT...S WIND 30 KT. SEAS 15 FT. 
.THU...SE WIND 25 KT. SEAS 11 FT. 
.FRI...S WIND 15 KT. SEAS 8 FT. 
.SAT...WIND VARIABLE LESS THAN 15 KT. SEAS 7 FT. 

$$

475 
FZAK67 PAJK 041148
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
348 AM AKDT TUE APR 4 2017

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.

PKZ398-050600-
348 AM AKDT TUE APR 4 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
AS A GALE FORCE FRONT LIES STALLED ACROSS THE NORTHEAST GULF, A
STORM FORCE FRONT WILL ADVANCE N INTO THE SOUTHEAST GULF THIS 
AFTERNOON. YET ANOTHER STORM FORCE FRONT LIFTS N INTO THE EASTERN 
GULF EARLY WEDNESDAY. 

$$

PKZ310-050600-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
348 AM AKDT TUE APR 4 2017

...STORM WARNING TODAY THROUGH TONIGHT...

.TODAY...E WIND 45 KT. SEAS 20 FT. RAIN.
.TONIGHT...E WIND 45 KT. SEAS 21 FT. RAIN.
.WED...E GALE TO 40 KT BECOMING S 30 KT IN THE AFTERNOON.
SEAS 19 FT. RAIN.
.WED NIGHT...S WIND 30 KT. SEAS 15 FT. SHOWERS.
.THU...SE WIND 25 KT. SEAS 11 FT. 
.FRI...S WIND 15 KT. SEAS 8 FT. 
.SAT...WIND VARIABLE LESS THAN 15 KT. SEAS 7 FT. 

$$

362 
FZAK67 PAJK 042305
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
305 PM AKDT TUE APR 4 2017

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.

PKZ398-051715-
305 PM AKDT TUE APR 4 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE FRONT OVER THE FAR SE GULF WILL DRIFT N AND SLOWLY
WEAKEN THROUGH WED MORNING. ANOTHER STORM FORCE FRONT WILL MOVE
N THROUGH THE EASTERN GULF LATE TUE NIGHT AND WED. 

$$

PKZ310-051715-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
305 PM AKDT TUE APR 4 2017

...STORM WARNING THROUGH THIS EVENING...

.TONIGHT...E WIND 50 KT DIMINISHING TO 40 KT LATE. SEAS 21 FT. 
RAIN.
.WED...E WIND 40 KT BECOMING S 30 KT IN THE AFTERNOON. SEAS
19 FT. RAIN.
.WED NIGHT...S WIND 30 KT. SEAS 15 FT. RAIN SHOWERS. 
.THU...S WIND 25 KT. SEAS 12 FT. SW SWELL. 
.THU NIGHT...SE WIND 20 KT. SEAS 10 FT. SW SWELL. 
.FRI...S WIND 15 KT. SEAS 8 FT. 
.SAT...WIND VARIABLE LESS THAN 15 KT. SEAS 7 FT. 
.SUN...WIND VARIABLE LESS THAN 15 KT. SEAS 7 FT. 

$$

566 
FZAK67 PAJK 050609 AAA
OFFAJK

OFFSHORE WATERS FORECAST...UPDATED
NATIONAL WEATHER SERVICE JUNEAU AK
1009 PM AKDT TUE APR 4 2017

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.

PKZ398-060015-
1009 PM AKDT TUE APR 4 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE FRONT OVER THE FAR SE GULF WILL DRIFT N AND SLOWLY
WEAKEN THROUGH WED MORNING. ANOTHER STORM FORCE FRONT WILL MOVE
N THROUGH THE EASTERN GULF LATE TUE NIGHT AND WED. 

$$

PKZ310-060015-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
1009 PM AKDT TUE APR 4 2017

...STORM WARNING THROUGH THIS EVENING...

.TONIGHT...E WIND 50 KT DIMINISHING TO 40 KT LATE. SEAS 21 FT. 
RAIN.
.WED...E WIND 40 KT BECOMING S 30 KT IN THE AFTERNOON. SEAS
19 FT. RAIN.
.WED NIGHT...S WIND 30 KT. SEAS 15 FT. RAIN SHOWERS. 
.THU...S WIND 25 KT. SEAS 12 FT. SW SWELL. 
.THU NIGHT...SE WIND 20 KT. SEAS 10 FT. SW SWELL.
.FRI...E WIND 15 KT. SEAS 8 FT. 
.SAT...WIND VARIABLE LESS THAN 15 KT. SEAS 6 FT. 
.SUN...E WIND 15 KT. SEAS 8 FT. 

$$

560 
FZAK67 PAJK 051135
OFFAJK

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE JUNEAU AK
335 AM AKDT WED APR 5 2017

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.

PKZ398-060545-
335 AM AKDT WED APR 5 2017
.SYNOPSIS FOR THE EASTERN GULF OF ALASKA...
A STORM FORCE FRONT WILL LIFT NW ACROSS THE EASTERN GULF TODAY
AS ITS PARENT LOW CROSSES FROM THE CENTRAL TO THE  WESTERN GULF
AND STALLS THURSDAY. HIGH PRESSURE WILL BUILD ACROSS NORTHERN BC
THROUGH THURSDAY. 

$$

PKZ310-060545-
GULF OF ALASKA NORTH OF 55 DEGREES NORTH AND EAST OF 144 DEGREES
WEST-
335 AM AKDT WED APR 5 2017

...GALE WARNING TODAY...

.TODAY...E WIND 40 KT BECOMING S 30 KT IN THE AFTERNOON. SEAS
18 FT. RAIN IN THE MORNING, THEN RAIN SHOWERS IN THE AFTERNOON. 
.TONIGHT...S WIND 30 KT. SEAS 15 FT. RAIN SHOWERS IN THE EVENING.
.THU...S WIND 25 KT. SEAS 12 FT. SW SWELL. 
.THU NIGHT...SE WIND 20 KT. SEAS 10 FT. SW SWELL IN THE
EVENING. 
.FRI...E WIND 15 KT. SEAS 8 FT. 
.SAT...WIND VARIABLE LESS THAN 15 KT. SEAS 6 FT. 
.SUN...E WIND 15 KT. SEAS 8 FT. 

$$

Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
541 AM AKDT Sun Apr 2 2017

.SHORT TERM...Issued at 520 am Sunday. /through Tuesday night/ An
upper level short wave associated with a weakening low over the
northwest gulf moved over the panhandle overnight and has since
entered Canada. This short wave produced widespread shower
activity overnight but has diminished somewhat in the early
morning hours. A slightly cooler low level airmass has also
advected in from the west, resulting in periods of snow showers
instead of rain showers. Freezing rain was also reported for a
short while over the far southwestern panhandle around 3 am.
Forecast high temperatures today should see shower activity today
transitioning to unmixed rain everywhere except the higher
elevations of the Klondike Highway. Another short wave associated
with a mid level disturbance is forecast to cross the gulf from
southwest to northeast today and enhance showers tonight.
Marginally less in the way of frozen precip is expected tonight as
low level warm air advection from the west should result in a
fairly flat or even reversed diurnal temperature curve,
particularly along the central and southern outer coast. Locations
more inland will see overnight lows occurring by midnight with
little change afterwards until Monday morning.

This modest warm up on Monday will precede a marginal storm force
front that will arrive along the southern outer coast late Monday
afternoon or Monday evening. Hot on the heels of this front, a
second will arrive from the southwest and overrun the first late
Tuesday. Both of these fronts are being depicted by models as
having a significant amount of precipitable water and 72 hour
totals of as much as 2 inches are currently forecast. Warmer low
level temps will result in the vast majority of this precipitation
to fall as rain. Exceptions, as before, will be the higher
elevations of the Klondike and, possibly near the border on the
Haines Highway.

Marine winds become decidedly more severe beginning beginning
Monday morning with southeasterly 45 kt gales arriving over the
coastal marine zones by Monday afternoon. At this time, think the
storm force winds may remain well off shore over zone 310. As the
first front weakens Tuesday morning, the second front will arrive
Tuesday afternoon and result in another round of 45 kt gales over
the coastal marine zones Tuesday night.

.LONG TERM.../ Wednesday through Sunday / Rather strong upper low
anchored over the western gulf does not show many signs of moving
on mid week as a strong jet on its southern flank reinforces its
presence. Extended guidance is rather certain on this with just
about every model getting on board. However by late week into the
weekend the southern jet gets pushed southward by various waves
moving east across the northern pacific cutting off the main
source of upper dynamics for the western gulf low. What happens
after that is up in the air as several scenarios are suggested.
However, most paint that at least a weak trough will remain in the
western gulf through the weekend with noticeably reduced upper
level flow over the panhandle and a Pacific storm track aimed more
at the Pacific NW rather then Alaska.

Main trend for the long range for the forecast over the panhandle
is rather wet and windy weather mid week giving way to drier
conditions by the weekend. Incoming gale force front for Tue into
Tue night will bring another round of rain and wind for many areas
of the panhandle. Forecast mainly on track with this system. Gale
force winds possible for many marine areas and with 850 mb winds
approaching 50 to 60 kt strong wind gusts are possible for the
southern panhandle and outer coast as well.

By Friday into the weekend the main Pacific storm track shifts
southward sending most of the storms into Vancouver Island or the
Pacific NW. The main trend is toward an inverted trough at lower
levels setting up over the area by the weekend. The resulting
offshore flow means drier weather and the possibility of more
breaks in the cloud cover. I can not completely rule out any
precip however as some models are still bringing some short wave
energy into at least the southern panhandle Sun into Mon so a
chance of rain for the southern half of the panhandle still
persists.

&&

.AVIATION...Persistent low over the W gulf will push a weak
surface trough into the panhandle this morning. Expect some mixed
precip this morning to result in MVMC as the boundary pushes
across the region. Precip will diminish slightly as boundary
pushes inland, but persistent onshore flow will maintain showers
most of the day. Another surface trough propagating from the low
in the W gulf will impact mainly the central panhandle this
evening/overnight with another period of low MVMC through early
Mon.

&&

.AJK Watches/Warnings/Advisories...
PUBLIC...Strong Wind through this evening for AKZ018.
MARINE...Small Craft Advisory for PKZ012-013-022-041-052.
     Small Craft Advisory due to Seas for PKZ042-043-051-053.
&&

Fritsch/BC

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