Gale Warning 251, NWS Anchorage, AK

514 
FZAK61 PAFC 041153
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
353 AM AKDT TUE APR 4 2017

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ399-050045-
353 AM AKDT TUE APR 4 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A FRONT ALONG THE NORTH GULF COAST WILL WEAKEN LATER TODAY. A 973
MB LOW NEAR 53N 153W WILL DISSIPATE IN PLACE TONIGHT. A NORTH
PACIFIC LOW WILL MOVE TO 56N 145W AT 970 MB TONIGHT...THEN WILL MOVE
TO 56N 152W AT 975 MB WED NIGHT. 

$$

PKZ351-050045-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W-
353 AM AKDT TUE APR 4 2017

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...E WIND 20 TO 30 KT INCREASING TO 30 TO 45 KT IN THE 
AFTERNOON. SEAS 13 TO 20 FT. RAIN.
.TONIGHT...E WIND 25 TO 40 KT. SEAS 14 TO 22 FT. RAIN.
.WED...E WIND 20 TO 35 KT. SEAS 14 TO 20 FT. RAIN SHOWERS.
.WED NIGHT...SE WIND 20 TO 30 KT. SEAS 12 TO 17 FT.
.THU THROUGH FRI...SE WIND 15 TO 30 KT. SEAS 9 TO 14 FT.
.SAT...S WIND 10 KT. SEAS 4 TO 7 FT.

$$

PKZ352-050045-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W-
353 AM AKDT TUE APR 4 2017

.TODAY...SE WIND 20 TO 30 KT. SEAS 12 TO 18 FT. RAIN.
.TONIGHT...N WIND 10 TO 25 KT. SEAS 8 TO 16 FT. RAIN.
.WED...SW WIND 10 TO 25 KT. SEAS 11 TO 14 FT. RAIN.
.WED NIGHT...S WIND 15 TO 30 KT. SEAS 11 TO 15 FT.
.THU THROUGH FRI...S WIND 15 TO 30 KT. SEAS 9 TO 16 FT.
.SAT...SW WIND 10 KT. SEAS 5 TO 8 FT.

$$

733 
FZAK61 PAFC 042347
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
347 PM AKDT TUE APR 4 2017

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ399-051330-
347 PM AKDT TUE APR 4 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 977 MB LOW NEAR 54N 152W WILL DISSIPATE IN PLACE TONIGHT. A 
968 MB LOW NEAR 51N 140W MOVES TO 56N 151W WITH LITTLE CHANGE IN
INTENSITY WEDNESDAY AFTERNOON. THIS LOW THEN BECOMES NEARLY STATIONARY
AND WEAKENS TO 977 MB THURSDAY AFTERNOON. 

$$

PKZ351-051330-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W-
347 PM AKDT TUE APR 4 2017

...GALE WARNING THROUGH WEDNESDAY...

.TONIGHT...E WIND 25 TO 40 KT. SEAS 14 TO 21 FT. RAIN.
.WED...N TO E WIND 25 TO 40 KT. SEAS 14 TO 21 FT. RAIN.
.WED NIGHT...SE WIND 20 TO 30 KT. SEAS 13 TO 17 FT.
.THU...SE WIND 25 TO 40 KT. SEAS 13 TO 17 FT.
.THU NIGHT...SE WIND 20 TO 35 KT. SEAS 9 TO 16 FT.
.FRI THROUGH SUN...S WIND 10 TO 25 KT. SEAS 5 TO 10 FT.

$$

PKZ352-051330-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W-
347 PM AKDT TUE APR 4 2017

...GALE WARNING WEDNESDAY NIGHT...

.TONIGHT...N WIND 15 TO 30 KT. SEAS 9 TO 15 FT. RAIN.
.WED...SW WIND 15 TO 30 KT. SEAS 11 TO 16 FT.
.WED NIGHT...S WIND 20 TO 35 KT. SEAS 12 TO 17 FT.
.THU...S WIND 20 TO 35 KT. SEAS 11 TO 17 FT.
.THU NIGHT...S WIND 15 TO 30 KT. SEAS 10 TO 14 FT.
.FRI THROUGH SUN...S WIND 10 TO 20 KT. SEAS 5 TO 9 FT.

$$

356 
FZAK61 PAFC 051159
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
359 AM AKDT WED APR 5 2017

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ399-060045-
359 AM AKDT WED APR 5 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 966 MB LOW AT 56N 145W WILL MOVE TO 56N 152W AT 974 MB
TONIGHT...THEN WEAKEN IN PLACE TO 981 MB BY THU NIGHT. 

$$

PKZ351-060045-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W-
359 AM AKDT WED APR 5 2017

...GALE WARNING TODAY AND THURSDAY...

.TODAY...E WIND 25 TO 40 KT. SEAS 14 TO 21 FT. RAIN.
.TONIGHT...SE WIND 15 TO 30 KT. SEAS 12 TO 18 FT.
.THU...SE WIND 20 TO 35 KT BECOMING 30 KT IN THE AFTERNOON. SEAS
12 TO 15 FT.
.THU NIGHT...SE WIND 20 TO 30 KT. SEAS 10 TO 15 FT.
.FRI...SE WIND 10 TO 25 KT. SEAS 7 TO 12 FT.
.SAT THROUGH SUN...SW WIND 10 KT. SEAS 3 TO 6 FT.

$$

PKZ352-060045-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W-
359 AM AKDT WED APR 5 2017

...GALE WARNING THURSDAY...

.TODAY...NE WIND 10 TO 25 KT BECOMING S 15 TO 30 KT IN THE
AFTERNOON. SEAS 10 TO 15 FT.
.TONIGHT...S WIND 15 TO 30 KT. SEAS 9 TO 15 FT.
.THU...SE WIND 20 TO 35 KT. SEAS 10 TO 16 FT. RAIN.
.THU NIGHT...S WIND 15 TO 30 KT. SEAS 9 TO 14 FT.
.FRI...S WIND UP TO 20 KT. SEAS 7 TO 11 FT.
.SAT THROUGH SUN...SW WIND 10 KT. SEAS 3 TO 6 FT.

$$

471 
FZAK61 PAFC 052346
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
346 PM AKDT WED APR 5 2017

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ399-061400-
346 PM AKDT WED APR 5 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 969 MB LOW AT 56N 156W LOOPS TO 57N 156W AT 982 MB BY FRI
AFTERNOON. THE ASSOCIATED FRONT WRAPS INLAND OVER THE ALASKA
PENINSULA AND SOUTH-CENTRAL ALASKA THROUGH FRI AFTERNOON. SEVERAL
TROUGHS SPIN ACROSS THE GULF OF ALASKA THROUGH FRI AFTERNOON.

$$

PKZ351-061400-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W-
346 PM AKDT WED APR 5 2017

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...SE WIND 15 TO 30 KT. SEAS 12 TO 17 FT.
.THU...SE WIND 25 TO 35 KT. SEAS 12 TO 15 FT.
.THU NIGHT...SE WIND 20 TO 35 KT. SEAS 10 TO 15 FT.
.FRI...SE WIND 15 TO 30 KT. SEAS 9 TO 13 FT.
.FRI NIGHT...S WIND UP TO 15 KT. SEAS 8 FT.
.SAT THROUGH MON...E WIND UP TO 10 KT. SEAS 4 TO 7 FT.

$$

PKZ352-061400-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W-
346 PM AKDT WED APR 5 2017

...GALE WARNING THURSDAY AND THURSDAY NIGHT...

.TONIGHT...S WIND 15 TO 30 KT. SEAS 9 TO 15 FT.
.THU...SE WIND 20 TO 35 KT. SEAS 11 TO 17 FT. RAIN.
.THU NIGHT...SE WIND 20 TO 35 KT. SEAS 11 TO 16 FT.
.FRI...S WIND 10 TO 25 KT. SEAS 9 TO 12 FT.
.FRI NIGHT...SW WIND UP TO 20 KT. SEAS 7 TO 10 FT.
.SAT THROUGH MON...SE WIND 10 KT. SEAS 4 TO 7 FT.

$$

797 
FZAK61 PAFC 061200
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
400 AM AKDT THU APR 6 2017

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ399-070045-
400 AM AKDT THU APR 6 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 973 MB LOW NEAR 55N 151W TRACKS TO 57N 155W AT 980 MB BY FRI 
AFTERNOON. THE ASSOCIATED FRONT TRACKS THROUGH THE WESTERN GULF 
THROUGH FRI MORNING BEFORE MOVING OVER THE COOK INLET AND KENAI 
PENINSULA REGION BY FRI AFTERNOON.


$$

PKZ351-070045-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W-
400 AM AKDT THU APR 6 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 25 TO 35 KT. SEAS 13 FT.
.TONIGHT...SE WIND 20 TO 35 KT. SEAS 9 TO 14 FT. RAIN.
.FRI...SE WIND 15 TO 30 KT DIMINISHING TO 10 TO 20 KT IN THE
AFTERNOON. SEAS 7 TO 11 FT.
.FRI NIGHT...S WIND UP TO 15 KT. SEAS 6 TO 10 FT.
.SAT THROUGH SUN...W WIND UP TO 10 KT. SEAS 3 TO 7 FT.
.MON...NE WIND 10 KT. SEAS 4 TO 7 FT.

$$

PKZ352-070045-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W-
400 AM AKDT THU APR 6 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE WIND 20 TO 35 KT. SEAS 10 TO 16 FT. RAIN.
.TONIGHT...S WIND 20 TO 35 KT. SEAS 11 TO 14 FT. RAIN.
.FRI...S WIND 10 TO 25 KT. SEAS 8 TO 13 FT.
.FRI NIGHT...SW WIND UP TO 20 KT. SEAS 7 TO 10 FT.
.SAT THROUGH SUN...SW WIND UP TO 15 KT. SEAS 4 TO 8 FT.
.MON...NE WIND 10 TO 20 KT. SEAS 6 FT.

$$

569 
FZAK61 PAFC 062337
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
337 PM AKDT THU APR 6 2017

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ399-071300-
337 PM AKDT THU APR 6 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...
A 978 MB LOW AT 55N 152W MOVES TO 54N 158W AT 996 MB BY SAT 
AFTERNOON. SEVERAL TROUGHS SLIP ACROSS THE GULF OF ALASKA AND NORTH 
GULF COAST THROUGH SAT AFTERNOON.

$$

PKZ351-071300-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W-
337 PM AKDT THU APR 6 2017

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 20 TO 35 KT. SEAS 9 TO 14 FT. RAIN.
.FRI...SE WIND 15 TO 30 KT DIMINISHING TO 10 TO 20 KT IN THE
AFTERNOON. SEAS 8 TO 11 FT.
.FRI NIGHT...S WIND 15 KT. SEAS 8 FT.
.SAT...VARIABLE WIND 10 KT. SEAS 4 TO 7 FT.
.SAT NIGHT...SW WIND UP TO 10 KT. SEAS 4 FT.
.SUN THROUGH TUE...N WIND UP TO 15 KT. SEAS 4 TO 8 FT.

$$

PKZ352-071300-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W-
337 PM AKDT THU APR 6 2017

...GALE WARNING TONIGHT...

.TONIGHT...SE WIND 20 TO 35 KT. SEAS 11 TO 14 FT. RAIN.
.FRI...S WIND 10 TO 25 KT. SEAS 10 FT.
.FRI NIGHT...SW WIND 10 TO 20 KT. SEAS 9 FT.
.SAT...SW WIND 10 KT. SEAS 6 FT.
.SAT NIGHT...SE WIND UP TO 15 KT. SEAS 4 TO 8 FT.
.SUN THROUGH TUE...NE WIND 10 TO 25 KT. SEAS 4 TO 9 FT.

$$

739 
FZAK61 PAFC 071157
OFFAER

OFFSHORE WATERS FORECAST
NATIONAL WEATHER SERVICE ANCHORAGE AK
357 AM AKDT FRI APR 7 2017

OFFSHORE WATERS FORECAST FOR THE GULF OF ALASKA WEST OF 144W

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT AN AVERAGE OF THE HIGHEST
ONE-THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ399-080045-
357 AM AKDT FRI APR 7 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 977 MB LOW AT 56N 153W TRACKS TO 55N 156W AT 997 MB BY SUN
MORNING. A WEAK AREA OF HIGH PRESSURE PUSHES OVER THE CENTRAL 
GULF SAT MORNING THROUGH SUN MORNING.

$$

PKZ351-080045-
GULF OF ALASKA OFFSHORE NORTH OF 57N AND WEST OF 144W-
357 AM AKDT FRI APR 7 2017

.TODAY...SE WIND 15 TO 30 KT. SEAS 6 TO 11 FT. RAIN.
.TONIGHT...SE WIND 10 TO 15 KT. SEAS 5 TO 8 FT.
.SAT...W WIND UP TO 10 KT. SEAS 6 FT.
.SAT NIGHT...SW WIND UP TO 10 KT. SEAS 4 FT.
.SUN THROUGH TUE...SE WIND UP TO 15 KT. SEAS 3 TO 7 FT.

$$

PKZ352-080045-
GULF OF ALASKA OFFSHORE SOUTH OF 57N NORTH OF 55N AND WEST OF
144W-
357 AM AKDT FRI APR 7 2017

.TODAY...S WIND 10 TO 25 KT. SEAS 8 TO 12 FT. RAIN.
.TONIGHT...SW WIND 10 TO 20 KT. SEAS 7 TO 10 FT.
.SAT...SW WIND 10 TO 15 KT. SEAS 5 TO 8 FT.
.SAT NIGHT...SW WIND UP TO 15 KT. SEAS 4 TO 8 FT.
.SUN THROUGH TUE...SE WIND UP TO 20 KT. SEAS 5 TO 8 FT.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
442 AM AKDT Mon Apr 3 2017

.ANALYSIS AND UPPER LEVELS...

A strong closed upper level low is located well south of Kodiak
Island this morning, with a rapidly weakening low west of Bristol
Bay. A third low is over northern Kamchatka. Upper ridges are over
the Bering, and the eastern Gulf and southeast coast. At the
surface, a deep low south of Kodiak and its associated front are
approaching the southwestern Gulf, while the low west of Bristol
Bay is dissipating. The third low is moving off the Kamchatka
Peninsula into the western Bering.

&&

.MODEL DISCUSSION...

Models are in agreement that the main low will reach the
southwest Gulf overnight with a wave moving along the north Gulf
Coast this morning, followed by a front tonight. The original low
will weaken in place and another low will sweep into the Gulf Tue
night, with weak fronts reaching the coast Wed. The remnants of
the low west of Bristol Bay will dissipate this morning, and the
Kamchatka low will reach the southern Bering before dissipating
early on Thu. The forecast was freshened with the higher
resolution solution of the gfs.

&&

.AVIATION...
PANC...VFR conditions are expected to persist through Tue
morning. Northwest surface winds will increase in response to a
front moving inland this evening through early Tue morning.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
A low pressure system is entering the southwest Gulf this
morning. A front preceding this low pressure system will bring a
very potent front across the Gulf coast with storm force winds
likely across much of the Gulf of Alaska on through tonight along
with Shelikof Strait, the Barren Islands, and the northern Gulf.
Much of the precipitation will fall along the Gulf coast and
coastal mountains. Sufficient cross barrier flow will keep much
of inland Southcentral Alaska on the dry side. Temperatures will
remain a bit warmer than normal as the source region for the air
mass with this storm is from the south.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
Low pressure across the Kuskokwim Delta diminishes by this
afternoon as it moves into the eastern Bering. The next low from
the North Pacific pushes a front into the Alaska Peninsula early
today bringing strong gusty winds along the peninsula. The
associated low center moves to the south end of Kodiak Island
tonight which pushes the front across the southwest. Easterly
flow along the mountain ranges limits precipitation inland as the
front moves across the Aleutian Range with the best chance to see
light accumulations along west facing slopes. The upper low
meanders near Kodiak through mid week keeping higher chances of
precipitation in the short term forecast. A re-enforcing surface
low on Tuesday night brings another surge of moisture from the
eastern gulf to the Alaska Peninsula and Bristol Bay.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
The eastern Bering and Aleutians can expect winds to increase out
of the north today as a North Pacific low nears the Alaska
Peninsula. Snow will continue to develop across the eastern half
of the Bering as an upper trough remains the dominant weather
pattern through Wednesday. Surface ridging along the western
Bering shifts south across the Central Aleutians today keeping the
area under a lighter flow pattern. Weak low pressure follows in
its wake tonight bringing light snow showers across the western
waters with a westward shift in winds.

&&

.LONG TERM FORECAST (Days 3 through 7)...
The active pattern looks to continue for much of this week with
the low in the Gulf being reinforced with another low pushing up
from the south by Wednesday. This will keep warmer air being
ushered in over the southern mainland and rain along the north
Gulf coast. Late in the week the low looks to track into the
eastern Bering which could clear out some of the precip for
Southcentral Alaska. However, guidance is struggling with what to
do with the low as it moves into the Bering and how ridging will
set up for the weekend. These differences could lead to fairly
significant differences for what kind of weather the southern
mainland will see. The most consistent guidances are the ensemble
means which were preferred for next weekend.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...None.
MARINE...Storms 119 130 131 138
         Gales 120 125 132 136-7 139 150 155 160 172.

&&

SYNOPSIS AND MODEL DISCUSSION...ds
SOUTHCENTRAL ALASKA...bl
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...kh
LONG TERM...dk