Gale Warning 401, NWS Anchorage, AK

408 
FZAK62 PAFC 021141
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
341 AM AKDT Sat Sep 2 2017

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-030130-
341 AM AKDT Sat Sep 2 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
Bogoslof Volcano, located near 54N 168W, is currently active.

A 986 mb low near 51N 165W will move to 51N 160W at 970 mb
tonight...then shift to 53N 158W at 975 mb by Sun night. A front 
associated with a Kamchatka low will approach the western 
Aleutians Sun night. 

$$

PKZ411-030130-
Bering Sea Offshore West of 180 and East of the International
Dateline-
341 AM AKDT Sat Sep 2 2017

.TODAY...NW wind 10 to 20 kt. Seas 7 ft.
.TONIGHT...W wind 10 to 20 kt. Seas 6 ft. Patchy fog.
.SUN...W wind 10 to 20 kt. Seas 6 ft. Patchy fog.
.SUN NIGHT...W wind up to 20 kt. Seas 5 ft.
.MON...S wind 20 to 35 kt. Seas 8 to 13 ft.
.TUE...E wind 15 to 30 kt. Seas 10 to 17 ft.
.WED...N wind 15 to 25 kt. Seas 9 to 12 ft.

$$

PKZ412-030130-
Bering Sea Offshore 171W to 180 and North of 56N-
341 AM AKDT Sat Sep 2 2017

.TODAY...N wind 10 to 20 kt. Seas 3 to 6 ft.
.TONIGHT...NW wind 10 to 20 kt. Seas 5 ft.
.SUN...NW wind 10 to 20 kt. Seas 5 ft. Patchy fog.
.SUN NIGHT...N wind 10 to 25 kt. Seas 4 to 7 ft.
.MON THROUGH TUE...SE wind 10 to 25 kt. Seas 5 to 10 ft.
.WED...NE wind 20 kt. Seas 8 to 11 ft.

$$

PKZ413-030130-
Bering Sea Offshore 171W to 180 and South of 56N-
341 AM AKDT Sat Sep 2 2017

.TODAY...N wind 15 to 25 kt. Seas 4 to 7 ft.
.TONIGHT...N wind 15 to 25 kt. Seas 6 to 9 ft.
.SUN...NW wind 15 to 25 kt. Seas 6 to 9 ft. Patchy fog.
.SUN NIGHT...NW wind 10 to 25 kt. Seas 5 to 10 ft.
.MON THROUGH TUE...SE wind 15 to 30 kt. Seas 6 to 11 ft.
.WED...NE wind 10 to 20 kt. Seas 6 to 10 ft.

$$

PKZ414-030130-
Bering Sea Offshore East of 171W-
341 AM AKDT Sat Sep 2 2017

...GALE WARNING SUNDAY...

.TODAY...NE wind 10 to 25 kt. Seas 3 to 6 ft.
.TONIGHT...N wind 15 to 30 kt. Seas 5 to 10 ft.
.SUN...N wind 20 to 35 kt. Seas 7 to 12 ft.
.SUN NIGHT...N wind 30 kt. Seas 8 to 13 ft.
.MON...N wind 15 to 30 kt. Seas 6 to 11 ft.
.TUE THROUGH WED...E wind up to 20 kt. Seas 3 to 8 ft.

$$

538 
FZAK62 PAFC 030001
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
401 PM AKDT Sat Sep 2 2017

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-031300-
401 PM AKDT Sat Sep 2 2017
.SYNOPSIS FOR CENTRAL BERING SEA...

A 972 mb low near 51N 162W maintains strength as it moves to 52N
157W late Sun afternoon, then weakens to 990 mb as it moves to 
53N 157W Mon afternoon. Late Sunday night a 963 mb low near 51N 
161E moves a front to the western Aleutians early Mon morning, 
then pushes the front further north and east as it moves to 52N 
166E Mon afternoon.

$$

PKZ411-031300-
Bering Sea Offshore West of 180 and East of the International
Dateline-
401 PM AKDT Sat Sep 2 2017

.TONIGHT...W wind 10 to 20 kt. Seas 7 ft. Patchy fog.
.SUN...W wind 10 to 20 kt. Seas 6 ft. Patchy fog.
.SUN NIGHT...W wind 10 to 15 kt. Seas 5 ft.
.MON...S wind 20 to 35 kt. Seas 7 to 12 ft.
.MON NIGHT...SE wind 20 to 30 kt. Seas 8 to 16 ft.
.TUE...E wind 15 to 30 kt. Seas 12 to 19 ft.
.WED THROUGH THU...N wind 10 to 25 kt. Seas 8 to 12 ft.

$$

PKZ412-031300-
Bering Sea Offshore 171W to 180 and North of 56N-
401 PM AKDT Sat Sep 2 2017

.TONIGHT...N wind 10 to 20 kt. Seas 6 ft.
.SUN...N wind 10 to 20 kt. Seas 5 ft. Patchy fog.
.SUN NIGHT...N wind 10 to 20 kt. Seas 3 to 7 ft. Patchy fog.
.MON...SW wind up to 15 kt. Seas 3 to 7 ft.
.MON NIGHT...SE wind 15 to 30 kt. Seas 5 to 10 ft.
.TUE...SE wind 15 to 30 kt. Seas 8 to 13 ft.
.WED...NE wind 20 kt. Seas 8 to 11 ft.
.THU...N wind 10 to 20 kt. Seas 5 to 9 ft.

$$

PKZ413-031300-
Bering Sea Offshore 171W to 180 and South of 56N-
401 PM AKDT Sat Sep 2 2017

.TONIGHT...N wind 15 to 25 kt. Seas 6 to 9 ft.
.SUN...NW wind 15 to 30 kt. Seas 6 to 9 ft. Patchy fog.
.SUN NIGHT...N wind 10 to 25 kt. Seas 4 to 9 ft. Patchy fog.
.MON...W wind up to 20 kt. Seas 4 to 9 ft.
.MON NIGHT...S wind 15 to 30 kt. Seas 7 to 12 ft.
.TUE...SE wind 15 to 30 kt. Seas 8 to 13 ft.
.WED...NE wind 10 to 20 kt. Seas 6 to 10 ft.
.THU...N wind 20 kt. Seas 6 ft.

$$

PKZ414-031300-
Bering Sea Offshore East of 171W-
401 PM AKDT Sat Sep 2 2017

...GALE WARNING SUNDAY AND SUNDAY NIGHT...

.TONIGHT...N wind 15 to 30 kt. Seas 4 to 9 ft.
.SUN...N wind 20 to 35 kt. Seas 7 to 12 ft.
.SUN NIGHT...N wind 20 to 35 kt. Seas 8 to 13 ft.
.MON...N wind 15 to 25 kt. Seas 7 to 12 ft.
.MON NIGHT...N wind up to 20 kt. Seas 4 to 7 ft.
.TUE THROUGH WED...E wind up to 20 kt. Seas 3 to 8 ft.
.THU...NE wind 20 kt. Seas 5 ft.

$$

851 
FZAK62 PAFC 031133
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
333 AM AKDT Sun Sep 3 2017

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-040100-
333 AM AKDT Sun Sep 3 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
Bogoslof Volcano, located near 54N 168W, is currently active.

A 968 mb low at 50N 159W will move to 53N 157W at 975 mb tonight,
then shift to 52N 158W at 994 mb Mon night. A 960 mb low near 51N
158E tonight will move a front to the western Aleutians early Mon
morning, then will push the front to the central Bering as the low 
moves to 52N 169E at 969 mb Mon night.

$$

PKZ411-040100-
Bering Sea Offshore West of 180 and East of the International
Dateline-
333 AM AKDT Sun Sep 3 2017

.TODAY...W wind 10 to 15 kt. Seas 6 ft. Patchy fog.
.TONIGHT...SW wind 10 to 15 kt. Seas 5 ft.
.MON...S wind 15 to 30 kt. Seas 5 to 10 ft. Patchy fog.
.MON NIGHT...SE wind 20 to 30 kt. Seas 9 to 14 ft.
.TUE...E wind 15 to 30 kt. Seas 11 to 19 ft.
.WED...N wind 10 to 20 kt. Seas 8 to 13 ft.
.THU...NW wind 15 kt. Seas 6 ft.

$$

PKZ412-040100-
Bering Sea Offshore 171W to 180 and North of 56N-
333 AM AKDT Sun Sep 3 2017

.TODAY...N wind 10 to 20 kt. Seas 5 ft. Patchy fog.
.TONIGHT...NW wind 10 to 20 kt except variable 10 kt w of 176W.
Seas 3 to 7 ft. Patchy fog.
.MON...S wind up to 15 kt. Seas 3 to 6 ft. Patchy fog.
.MON NIGHT...S wind 15 to 30 kt. Seas 4 to 9 ft.
.TUE...SE wind 15 to 30 kt. Seas 8 to 13 ft.
.WED...NE wind 15 to 25 kt. Seas 8 to 13 ft.
.THU...N wind 10 to 20 kt. Seas 5 ft.

$$

PKZ413-040100-
Bering Sea Offshore 171W to 180 and South of 56N-
333 AM AKDT Sun Sep 3 2017

.TODAY...NW wind 10 to 25 kt. Seas 5 to 9 ft. Patchy fog.
.TONIGHT...NW wind 10 to 25 kt. Seas 4 to 9 ft. Patchy fog.
.MON...SW wind 10 to 20 kt. Seas 3 to 8 ft. Patchy fog.
.MON NIGHT...S wind 15 to 30 kt. Seas 6 to 11 ft.
.TUE...SE wind 15 to 30 kt. Seas 7 to 12 ft.
.WED...NE wind 10 to 25 kt. Seas 8 to 12 ft.
.THU...N wind 20 kt. Seas 6 ft.

$$

PKZ414-040100-
Bering Sea Offshore East of 171W-
333 AM AKDT Sun Sep 3 2017

...GALE WARNING TONIGHT...

.TODAY...N wind 20 to 30 kt. Seas 7 to 12 ft.
.TONIGHT...N wind 20 to 35 kt. Seas 8 to 13 ft.
.MON...N wind 15 to 25 kt. Seas 6 to 11 ft.
.MON NIGHT...N wind up to 20 kt. Seas 4 to 8 ft.
.TUE THROUGH WED...E wind up to 20 kt. Seas 3 to 8 ft.
.THU...N wind 10 to 20 kt. Seas 5 ft.

$$

861 
FZAK62 PAFC 032344
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
344 PM AKDT Sun Sep 3 2017

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-041300-
344 PM AKDT Sun Sep 3 2017
.SYNOPSIS FOR CENTRAL BERING SEA...

A 968 mb low at 52N 157W remains nearly stationary and weakens to
994 mb by Tue afternoon. The associated front wraps across the 
Alaska Peninsula and Southern Mainland into the Gulf of Alaska. A 
965 mb Southern Kamchatka low moves to 52N 175E at 975 mb with its
associated front over the Western Aleutians for Tue afternoon.

$$

PKZ411-041300-
Bering Sea Offshore West of 180 and East of the International
Dateline-
344 PM AKDT Sun Sep 3 2017

.TONIGHT...W wind 10 to 15 kt. Seas 5 ft.
.MON...Se wind 15 to 30 kt. Seas 5 to 10 ft. Patchy fog.
.MON NIGHT...SE wind 20 to 30 kt. Seas 9 to 17 ft. Rain.
.TUE...SE wind 15 to 30 kt. Seas 14 to 18 ft.
.TUE NIGHT...NE wind 15 to 25 kt. Seas 10 to 16 ft.
.WED...N wind 20 kt. Seas 7 to 12 ft.
.THU...NW wind 15 kt. Seas 6 ft.
.FRI...W wind 10 to 20 kt. Seas 5 ft.

$$

PKZ412-041300-
Bering Sea Offshore 171W to 180 and North of 56N-
344 PM AKDT Sun Sep 3 2017

.TONIGHT...N wind 10 to 20 kt. Seas 4 to 7 ft. Patchy fog.
.MON...S wind up to 15 kt except N 10 to 20 kt E of 174W. Seas 5 ft.
Patchy fog.
.MON NIGHT...SE wind 15 to 30 kt. Seas 4 to 9 ft. Patchy fog.
.TUE...SE wind 15 to 30 kt. Seas 7 to 12 ft.
.TUE NIGHT...E wind 15 to 25 kt. Seas 9 to 14 ft.
.WED...NE wind 20 kt. Seas 7 to 12 ft.
.THU...N wind 10 to 20 kt. Seas 5 ft.
.FRI...W wind 20 kt. Seas 5 ft.

$$

PKZ413-041300-
Bering Sea Offshore 171W to 180 and South of 56N-
344 PM AKDT Sun Sep 3 2017

.TONIGHT...N wind 10 to 25 kt. Seas 4 to 9 ft. Patchy fog.
.MON...N wind up to 20 kt becoming S in the afternoon. Seas 4 to 8 
ft. Patchy fog.
.MON NIGHT...SE wind 15 to 30 kt. Seas 6 to 11 ft. Patchy fog.
.TUE...SE wind 15 to 30 kt. Seas 8 to 13 ft.
.TUE NIGHT...SE wind 10 to 25 kt. Seas 9 to 14 ft.
.WED...NE wind 10 to 25 kt. Seas 7 to 12 ft.
.THU...N wind 20 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 5 ft.

$$

PKZ414-041300-
Bering Sea Offshore East of 171W-
344 PM AKDT Sun Sep 3 2017

...GALE WARNING TONIGHT...

.TONIGHT...N wind 20 to 35 kt. Seas 8 to 13 ft.
.MON...N wind 15 to 30 kt. Seas 7 to 12 ft.
.MON NIGHT...N wind 10 to 20 kt. Seas 5 to 8 ft. Patchy fog.
.TUE...E wind up to 15 kt. Seas 3 to 6 ft.
.TUE NIGHT...SE wind up to 20 kt. Seas 3 to 8 ft.
.WED...E wind 10 to 20 kt. Seas 4 to 8 ft.
.THU...N wind 10 to 20 kt. Seas 5 ft.
.FRI...NW wind 15 kt. Seas 5 ft.

$$

907 
FZAK62 PAFC 041129
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
329 AM AKDT Mon Sep 4 2017

Offshore Waters Forecast for the Bering Sea

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.

PKZ499-050045-
329 AM AKDT Mon Sep 4 2017
.SYNOPSIS FOR CENTRAL BERING SEA...
Bogoslof Volcano, located near 54N 168W, is currently active.

A 976 mb low at 53N 158W will remain nearly stationary as it 
weakens to 992 mb tonight, then will drift to the North Pacific
and dissipate Tue night. A 960 mb low just south of Kamchatka will
move to 52N 170E at 970 mb tonight, then move to 52N 180 at 978 mb
Tue night.

$$

PKZ411-050045-
Bering Sea Offshore West of 180 and East of the International
Dateline-
329 AM AKDT Mon Sep 4 2017

.TODAY...SE wind 15 to 30 kt. Seas 6 to 11 ft. Patchy fog.
.TONIGHT...SE wind 20 to 30 kt. Seas 9 to 17 ft. Rain.
.TUE...E wind 15 to 30 kt. Seas 14 to 19 ft.
.TUE NIGHT...NE wind 15 to 25 kt. Seas 10 to 16 ft.
.WED...N wind 10 to 25 kt. Seas 6 to 11 ft.
.THU...NW wind 15 kt. Seas 6 ft.
.FRI...W wind 10 to 20 kt. Seas 5 ft.

$$

PKZ412-050045-
Bering Sea Offshore 171W to 180 and North of 56N-
329 AM AKDT Mon Sep 4 2017

.TODAY...N wind 10 to 20 kt becoming S in the afternoon.
Seas 5 ft. Patchy fog.
.TONIGHT...SE wind 15 to 30 kt. Seas 4 to 9 ft. Patchy fog.
.TUE...SE wind 15 to 30 kt. Seas 8 to 13 ft.
.TUE NIGHT...E wind 15 to 25 kt. Seas 9 to 14 ft.
.WED...NE wind 15 to 25 kt. Seas 7 to 12 ft.
.THU...N wind 10 to 20 kt. Seas 4 to 7 ft.
.FRI...W wind 20 kt. Seas 4 ft.

$$

PKZ413-050045-
Bering Sea Offshore 171W to 180 and South of 56N-
329 AM AKDT Mon Sep 4 2017

.TODAY...N wind up to 20 kt becoming SE in the afternoon.
Seas 4 to 8 ft. Patchy fog.
.TONIGHT...SE wind 15 to 30 kt. Seas 6 to 11 ft. Patchy fog. Rain.
.TUE...SE wind 10 to 25 kt. Seas 8 to 13 ft. Rain.
.TUE NIGHT...SE wind 15 to 25 kt. Seas 9 to 15 ft.
.WED...NE wind 10 to 25 kt. Seas 7 to 12 ft.
.THU...N wind 20 kt. Seas 6 ft.
.FRI...NW wind 15 kt. Seas 4 ft.

$$

PKZ414-050045-
Bering Sea Offshore East of 171W-
329 AM AKDT Mon Sep 4 2017

.TODAY...N wind 15 to 25 kt. Seas 6 to 10 ft.
.TONIGHT...N wind 10 to 20 kt. Seas 6 ft. Patchy fog.
.TUE...E wind 10 kt. Seas 4 ft.
.TUE NIGHT...SE wind up to 20 kt. Seas 3 to 8 ft.
.WED...E wind 10 to 20 kt. Seas 4 to 9 ft.
.THU...N wind 10 to 20 kt. Seas 3 to 7 ft.
.FRI...NW wind 20 kt. Seas 5 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
501 AM AKDT Fri Sep 1 2017

.ANALYSIS AND UPPER LEVELS...
An upper level low persists centered west of Norton Sound with a
trough extending across the Kuskokwim and greater Bristol Bay area
to a secondary upper low centered over Shelikof Strait and the
Barren Islands. While scattered showers rotate around portions of
the upper lows, the more organized and widespread area of
precipitation is associated with the front/trough stretching
across the Kenai Peninsula and northern Gulf coast. A developing
north Pacific surface low south of the central Aleutians is
tracking east in phase with an upper trough extending into the
Bering from a vertically stacked low off of the Kamchatka
Peninsula.

&&

.MODEL DISCUSSION...
Although trending it slightly further south, models have come into
better agreement regarding the position and depth of the strong
low spinning up south of the Alaska Peninsula this weekend. The NAM
was the model of choice for the eastern domain while a NAM/GFS
blend was preferred for the west.

&&

.AVIATION...
PANC...Despite some lingering southeasterly flow, spill over
moisture making it over the Chugach Mountains will continue to
bring scattered showers and periods of MVFR ceilings this
morning. By midday as the upper trough lifts north and the flow
turns more southerly, shower coverage will increase somewhat
before tapering off overnight tonight through Saturday morning as
southeasterly flow increases again over the area, strengthening
downsloping.

&&

.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)...

A cold upper low moving north across Southcentral today will bring
widespread showers. The cold air with this system will
sufficiently destabilize the atmosphere to produce a few
thunderstorms over the Susitna Valley and Copper River Basin.
Thunderstorms primarily will be concentrated near the Talkeetna
Mountains. Except for coastal locations, showers will become more
isolated tonight. Ridging building along the North Gulf
Coast/southern Copper River Basin, will produce brisk south winds
across the Basin this afternoon through evening.

On Saturday, a developing low and leading frontal trough
approaching the AK Pen will bring increasing winds and steady
rains to the western Gulf/Kodiak island by afternoon. By Saturday
night, rains will spread north to the Gulf coast/Kenai Peninsula
with areas in the lee of the Chugach Mountains predominately
downsloped. Winds will also increase to gale strength over the
Western Gulf/Kodiak Island with increased gap flows across the
mainland.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)...
The persistent upper level trough that brought rain to much of
the area east of Bethel this week has now shifted east of most
areas, which will allow for a brief period of quiet weather today.
Clear skies overnight along with cold air moving in from the next
trough approaching from the north has brought the coldest
temperatures of the season to the area with most areas falling
into the 30's with a few areas along the Kuskokwim River flirting
with the freezing mark. These cold temperatures are not expected
to reoccur tonight as cloud cover and slightly warmer temperatures
will move through that area with the next upper low. This system
will bring another round of rain to most areas this afternoon into
Saturday. The most widespread and heaviest rainfall will however
hold off until Saturday as the upper trough begins to merge with a
much deeper system approaching from the Bering. Model agreement
has improved significantly in the last 24 hours, so there is now
good confidence that it will keep rainy weather over much of the
region this weekend. Eastern Bristol Bay will remain mostly dry
from this system as downsloping develops along with strong
easterly winds.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)...
The next weather maker will continue moving through Western-
Central Bering today, with the most significant impact being rain
throughout the Aleutian/Pribilof Islands. This system will deepen
significantly this evening as it dips into the North Pacific, bringing
widespread gale force winds from Dutch Harbor eastward on
Saturday, which will then increase to storm force as it approaches
the AK pen on Sunday with widespread rain throughout the weekend.
The models are coming into a consensus with a more southerly low
track of this system, so it now appears that impacts from this
system will largely remain south of the Pribilof Islands.

&&

.LONG TERM FORECAST (Days 3 through 7)...

This forecast period the longwave pattern features broad troughing
with a closed low near St. Lawrence Island and a second closed low
south of the AK Peninsula. As time marches forward, the energy to
the north will be absorbed into the main center of cyclonic
circulation. All of the operational runs ping into a tight
pressure gradient as the low bombs out, with widespread
diffluence and moisture advection into southwest and south central
AK. There are some timing issues with the QPF placement and track
of the surface low, but generally expecting wet and unsettled
weather from this cyclone this forecast period.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Gale 150 155 172.
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...JR
SOUTHCENTRAL ALASKA...RMC
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...DEK
LONG TERM...PJS