Gale Warning 374, NWS Anchorage, AK

176 
FZAK61 PAFC 272308
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
308 PM AKDT Sun Aug 27 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.

PKZ399-281330-
308 PM AKDT Sun Aug 27 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A front will enter the southern Gulf late tonight and move to the
northern and western Gulf by Mon afternoon, then move inland Mon
night. The associated North Pacific low will move to 55N 151W at
985 mb Mon afternoon, then move to 57N 152W at 979 mb by Tue
afternoon.

$$

PKZ351-281330-
Gulf of Alaska Offshore North of 57N and West of 144W-
308 PM AKDT Sun Aug 27 2017

...GALE WARNING MONDAY AND MONDAY NIGHT...

.TONIGHT...SE wind 10 to 15 kt. Seas 6 ft.
.MON...E wind 25 to 40 kt. Seas 7 to 12 ft. Rain.
.MON NIGHT...SE wind 25 to 35 kt. Seas 12 to 16 ft. Rain.
.TUE...SE wind 20 to 30 kt. Seas 12 to 15 ft.
.TUE NIGHT...S wind 25 kt. Seas 12 ft.
.WED THROUGH FRI...SW wind 15 to 30 kt. Seas 6 to 11 ft.

$$

PKZ352-281330-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
308 PM AKDT Sun Aug 27 2017

...GALE WARNING MONDAY AND MONDAY NIGHT...

.TONIGHT...S wind up to 15 kt becoming E 10 to 25 kt after midnight.
Seas 5 ft.
.MON...E wind 25 to 40 kt. Seas 8 to 13 ft. Rain.
.MON NIGHT...SE wind 20 to 35 kt. Seas 11 to 16 ft.
.TUE...S wind 15 to 30 kt. Seas 10 to 14 ft.
.TUE NIGHT...SW wind 20 to 30 kt. Seas 12 ft.
.WED THROUGH FRI...SW wind 15 to 30 kt. Seas 7 to 12 ft.

$$

735 
FZAK61 PAFC 281158
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
358 AM AKDT Mon Aug 28 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.

PKZ399-290115-
358 AM AKDT Mon Aug 28 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 993 mb low near 51N 152W will strengthen to 977 mb as it moves to 
56N 152W Tue morning. The low will then move over Kodiak Island at 
around 980 mb Tue night. An associated front entering the southern 
Gulf this morning will move to the North Gulf Coast this evening and 
push inland tonight.

$$

PKZ351-290115-
Gulf of Alaska Offshore North of 57N and West of 144W-
358 AM AKDT Mon Aug 28 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 25 to 40 kt. Seas 5 to 10 ft building to 11 to 14
ft in the afternoon. Rain.
.TONIGHT...SE wind 25 to 35 kt. Seas 12 to 16 ft. Rain.
.TUE...SE wind 20 to 30 kt. Seas 12 to 15 ft.
.TUE NIGHT...S wind 25 kt. Seas 11 to 14 ft.
.WED THROUGH FRI...SW wind 15 to 30 kt. Seas 7 to 12 ft.

$$

PKZ352-290115-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
358 AM AKDT Mon Aug 28 2017

...GALE WARNING THROUGH TUESDAY...

.TODAY...E wind 25 to 35 kt. Seas 9 to 14 ft. Rain.
.TONIGHT...SE wind 20 to 35 kt. Seas 11 to 16 ft.
.TUE...S wind 20 to 35 kt. Seas 11 to 16 ft.
.TUE NIGHT...SW wind 20 to 30 kt. Seas 11 to 15 ft.
.WED THROUGH FRI...SW wind 15 to 30 kt. Seas 7 to 12 ft.

$$

474 
FZAK61 PAFC 282320
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
320 PM AKDT Mon Aug 28 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.

PKZ399-291330-
320 PM AKDT Mon Aug 28 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 979 mb low near 54N 152W will strengthen to 975 mb and move to
57N 152W by Tuesday afternoon. The low will then move over Kodiak
Island at around 980 mb Tue night. It will remain there and weaken
to 986 mb by Wednesday afternoon. An associated front currently in
the southern Gulf will move to the North Gulf Coast this evening 
and push inland tonight.

$$

PKZ351-291330-
Gulf of Alaska Offshore North of 57N and West of 144W-
320 PM AKDT Mon Aug 28 2017

...GALE WARNING THROUGH TUESDAY...

.TONIGHT...SE wind 25 to 40 kt. Seas 13 to 17 ft. Rain.
.TUE...SE wind 20 to 35 kt. Seas 13 to 16 ft.
.TUE NIGHT...S wind 20 to 30 kt. Seas 13 to 16 ft. Rain showers.
.WED...S wind 15 to 30 kt. Seas 11 to 15 ft.
.WED NIGHT...S wind up to 20 kt. Seas 7 to 11 ft.
.THU THROUGH SAT...S wind 10 to 20 kt. Seas 6 to 10 ft.

$$

PKZ352-291330-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
320 PM AKDT Mon Aug 28 2017

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...SE wind 20 to 35 kt. Seas 12 to 16 ft.
.TUE...S wind 20 to 35 kt. Seas 12 to 17 ft.
.TUE NIGHT...S wind 25 to 35 kt. Seas 13 to 17 ft. Rain showers.
.WED...SW wind 20 to 30 kt. Seas 10 to 15 ft.
.WED NIGHT...SW wind 10 to 25 kt. Seas 7 to 11 ft.
.THU THROUGH SAT...S wind 15 to 25 kt. Seas 6 to 10 ft.

$$

007 
FZAK61 PAFC 291156
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
356 AM AKDT Tue Aug 29 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.

PKZ399-300045-
356 AM AKDT Tue Aug 29 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 976 mb low near 54N 151W will move to near 58N 153W this evening, 
then remain nearly stationary through Wed night while weakening to 
988 mb.

$$

PKZ351-300045-
Gulf of Alaska Offshore North of 57N and West of 144W-
356 AM AKDT Tue Aug 29 2017

...GALE WARNING TODAY...

.TODAY...SE wind 20 to 35 kt. Seas 13 to 16 ft.
.TONIGHT...S wind 20 to 30 kt. Seas 13 to 16 ft.
.WED...S wind 15 to 30 kt. Seas 13 ft. Rain showers.
.WED NIGHT...S wind 20 kt. Seas 7 to 12 ft.
.THU THROUGH FRI...SW wind 10 to 20 kt. Seas 7 to 10 ft.
.SAT...S wind 20 kt. Seas 7 ft.

$$

PKZ352-300045-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
356 AM AKDT Tue Aug 29 2017

...GALE WARNING THROUGH TONIGHT...

.TODAY...S wind 20 to 35 kt. Seas 12 to 17 ft.
.TONIGHT...S wind 20 to 35 kt. Seas 13 to 17 ft.
.WED...SW wind 20 to 30 kt. Seas 10 to 15 ft.
.WED NIGHT...SW wind 25 kt. Seas 7 to 11 ft.
.THU THROUGH FRI...W wind 15 to 25 kt. Seas 6 to 10 ft.
.SAT...S wind 15 to 25 kt. Seas 7 ft.

$$

417 
FZAK61 PAFC 300001
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
401 PM AKDT Tue Aug 29 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.

PKZ399-301430-
401 PM AKDT Tue Aug 29 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 974 mb low near 57N 152W will move to 60N 153W and weaken to 992 
mb Thursday afternoon. 

$$

PKZ351-301430-
Gulf of Alaska Offshore North of 57N and West of 144W-
401 PM AKDT Tue Aug 29 2017

.TONIGHT...S wind 20 to 30 kt. Seas 13 to 16 ft.
.WED...S wind 15 to 25 kt. Seas 12 ft. Rain showers.
.WED NIGHT...S wind 20 kt. Seas 10 ft. Rain showers.
.THU...S wind 20 kt. Seas 8 ft.
.THU NIGHT...SW wind 20 kt. Seas 8 ft.
.FRI THROUGH SUN...SE wind 25 kt. Seas 6 to 11 ft.

$$

PKZ352-301430-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
401 PM AKDT Tue Aug 29 2017

...GALE WARNING TONIGHT...

.TONIGHT...SW wind 20 to 35 kt. Seas 12 to 17 ft. Rain showers.
.WED...SW wind 20 to 30 kt. Seas 9 to 14 ft.
.WED NIGHT...SW wind 25 kt. Seas 8 to 11 ft.
.THU...SW wind 15 to 25 kt. Seas 9 ft.
.THU NIGHT...W wind 15 to 25 kt. Seas 9 ft.
.FRI THROUGH SAT...S wind 15 to 25 kt. Seas 6 to 9 ft.
.SUN...SE wind 25 kt. Seas 9 to 14 ft.

$$

167 
FZAK61 PAFC 301143
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
343 AM AKDT Wed Aug 30 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.

PKZ399-310030-
343 AM AKDT Wed Aug 30 2017
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 980 mb low near 58N 153W will move to 59N 152W at 992 mb Thu 
morning then dissipate near 61N 151W Thu evening.

$$

PKZ351-310030-
Gulf of Alaska Offshore North of 57N and West of 144W-
343 AM AKDT Wed Aug 30 2017

.TODAY...S wind 15 to 25 kt. Seas 11 to 14 ft. Rain showers.
.TONIGHT...S wind 15 to 25 kt. Seas 8 to 11 ft. Rain showers.
.THU...S wind 20 kt. Seas 9 ft.
.THU NIGHT...SW wind 20 kt. Seas 8 ft.
.FRI...SW wind 10 to 20 kt. Seas 7 ft.
.SAT THROUGH SUN...SE wind 10 to 25 kt. Seas 6 to 11 ft.

$$

PKZ352-310030-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
343 AM AKDT Wed Aug 30 2017

.TODAY...SW wind 20 to 30 kt. Seas 9 to 14 ft. Rain showers.
.TONIGHT...SW wind 25 kt. Seas 8 to 11 ft.
.THU...SW wind 15 to 25 kt. Seas 9 ft.
.THU NIGHT...W wind 15 to 25 kt. Seas 9 ft.
.FRI...SW wind 20 kt. Seas 6 to 9 ft.
.SAT...S wind 15 to 25 kt. Seas 7 ft.
.SUN...SE wind 25 kt. Seas 9 to 14 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
452 AM AKDT Sun Aug 27 2017

.ANALYSIS AND UPPER LEVELS...
The upper level pattern this morning continues to be
characterized by a rather diffuse longwave trough over mainland
Alaska, which is anchored by a pair of weak lows near the AK
Peninsula and over the northern Gulf. Broad cyclonic flow beneath
the trough is supporting scattered showers across the southern
mainland. Farther west, a weak frontal zone spans much of the
southern Bering Sea from the Kamchatka Peninsula all the way to
near Dutch Harbor, with a weak wave forming along the front
helping to enhance rainfall over portions of the Eastern
Aleutians. The rest of the Bering remains in a benign cloudy
regime on the southern periphery of a large closed high over
Eastern Russia.

&&

.MODEL DISCUSSION...
Models are in generally good agreement through the short term as
the trough lingers over the mainland and is eventually reinforced
by a shortwave tracking rapidly across the southern Bering. There
is also good agreement on the timing of the next front arriving
along the Gulf coast late Monday afternoon into Monday evening.
Spread starts to increase by Tuesday as a deep North Pacific low
tracks near Kodiak Island. Primarily utilized the GFS for its run
to run consistency with this feature, avoiding the NAM as it has
been a significant outlier.

&&

.AVIATION...
PANC...VFR conditions will persist through Monday morning.
Gusty southeast winds are expected to subside this morning, but
may return to the terminal during the afternoon as ridging builds
along the coast.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...

Similar weather pattern to yesterday over Southcentral Alaska
with some showers around, but also some brief breaks in the clouds
as well. The pattern will begin to change again Monday afternoon
as a strong front pushes into the northern Gulf of Alaska and
brings rain back to that region. Inland areas will be see that
rain push into those areas Monday night into Tuesday. Winds will
also get gusty around the north Gulf Coast and Kodiak with a
northerly gradient over Cook Inlet bringing Gale force winds to
the lower Inlet by Monday night. It is also looking increasingly
likely that there will be some Storm Force winds developing along
the Gulf coast side of the Kenai Peninsula and into the Barren
Island region by Monday night.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...

Rain showers have become quite sparse across Southwest Alaska this
morning as the orientation of the upper level trough is keeping
the bulk of the energy over the eastern Bering Sea. A few showers
have continued along the Alaska and Aleutian Ranges but those have
been diminishing through the morning hours and should continue to
do so throughout the day. Isolated thunderstorms could develop
near the Kilbuck Mountains this afternoon but instability looks
rather marginal. Through Monday, isolated to scattered showers
can be expected across the region but the lack of any large scale
features should really inhibit any significant rain chances.
Attention will turn to the low moving into the northern Gulf of
Alaska near Kodiak Island late Monday which will push a front into
Southwest Alaska and bring some pretty decent rainfall to the
Bristol Bay area and the Alaska Peninsula.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...

A weakening front remains draped across the western half of the
Bering Sea this morning with a triple point low developing west of
Nikolski. This low will help bring some moderate to heavy rainfall
to parts of the eastern Aleutians this morning before it quickly
pushes into the North Pacific. The area of low pressure the
aforementioned front is attached to will begin to move across the
Bering Sea on Monday which will help increase rain chances once
again. Winds look to remain below 25 kts for most locations as
broad surface low pressure encompasses a vast majority of the
Bering Sea.

&&

.LONG TERM FORECAST (Days 3 through 7)...
The long term will begin mid week and will be characterized
primarily by a low south of Kodiak Island that will have moved
into the area from the south. It's front will push in over
Southcentral Alaska in the Monday night time frame. The low will
then slowly track north bringing continued southeast flow and rain
to southern Alaska, with the heaviest along the north Gulf coast.
On Friday the low will dissipate and a new low will push into the
Bering from the west.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE
MARINE...GALE WARNING 119 131 132 150
FIRE WEATHER...NONE

&&

SYNOPSIS AND MODEL DISCUSSION...CB
SOUTHCENTRAL ALASKA...EZ
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MMC
LONG TERM...DWK