Gale Warning 709, NWS Anchorage, AK

299 
FZAK61 PAFC 051312
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
412 AM AKST Sat Dec 5 2020

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.

PKZ399-060215-
412 AM AKST Sat Dec 5 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A front enters the southwestern Gulf and moves to the north Gulf 
coast Sun morning. A 961 mb North Pacific low moves to 54N 152W Mon 
morning.

$$

PKZ351-060215-
Gulf of Alaska Offshore North of 57N and West of 144W-
412 AM AKST Sat Dec 5 2020

.TODAY...NE wind 15 kt. Seas 8 ft.
.TONIGHT...E wind 10 to 25 kt increasing to 20 to 30 kt after
midnight. Seas 7 to 10 ft. Rain.
.SUN...SE wind 20 to 30 kt. Seas 12 to 20 ft. Rain showers.
.SUN NIGHT...SE wind 30 kt. Seas 21 to 29 ft.
.MON...S wind 15 to 30 kt. Seas 16 to 27 ft.
.TUE...SW wind 20 to 30 kt. Seas 14 to 21 ft.
.WED...S wind 10 to 20 kt. Seas 9 to 13 ft.

$$

PKZ352-060215-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
412 AM AKST Sat Dec 5 2020

...GALE WARNING TONIGHT...

.TODAY...NE wind 20 kt becoming E in the afternoon. Seas 9 ft.
.TONIGHT...E wind 25 to 40 kt. Seas 9 to 14 ft. Rain and snow.
.SUN...SE wind 20 to 30 kt. Seas 15 to 30 ft.
.SUN NIGHT...SE wind 20 to 35 kt. Seas 24 to 31 ft.
.MON...SW wind 20 to 35 kt. Seas 15 to 29 ft.
.TUE...SW wind 30 kt. Seas 14 to 19 ft.
.WED...SW wind 10 to 20 kt. Seas 9 to 14 ft.

$$

048 
FZAK61 PAFC 060019
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
319 PM AKST Sat Dec 5 2020

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-
319 PM AKST Sat Dec 5 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A front enters the southwestern Gulf tonight and moves north
through the Gulf. It reaches the Southcentral Coast Sun Morning. 
A 945 mb North Pacific low supporting this front moves to 56N 150W 
Mon morning and weakens to 966 mb.

$$

PKZ351-061400-
Gulf of Alaska Offshore North of 57N and West of 144W-
319 PM AKST Sat Dec 5 2020

.TONIGHT...E wind 10 to 25 kt increasing to 20 to 30 kt after
midnight. Seas 7 to 12 ft. Rain and snow.
.SUN...SE wind 20 to 30 kt. Seas 13 ft building to 14 to 26 ft in
the afternoon.
.SUN NIGHT...SE wind 30 kt. Seas 24 to 29 ft. Rain showers.
.MON...SE wind 15 to 30 kt. Seas 19 to 28 ft.
.MON NIGHT...SW wind 20 to 30 kt. Seas 16 to 25 ft.
.TUE...SW wind 20 to 30 kt. Seas 14 to 17 ft.
.WED...S wind 10 to 20 kt. Seas 9 to 13 ft.
.THU...W wind 10 kt. Seas 5 to 8 ft.

$$

PKZ352-061400-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
319 PM AKST Sat Dec 5 2020

...GALE WARNING TONIGHT...

.TONIGHT...E wind 25 to 40 kt. Seas 10 to 18 ft. Rain and snow.
.SUN...SE wind 20 to 30 kt. Seas 14 to 27 ft building to 22 to 33
ft
in the afternoon.
.SUN NIGHT...SE wind 15 to 30 kt. Seas 24 to 33 ft. Rain showers.
.MON...SW wind 20 to 35 kt. Seas 17 to 31 ft.
.MON NIGHT...SW wind 30 kt. Seas 15 to 25 ft.
.TUE...SW wind 30 kt. Seas 14 to 17 ft.
.WED...SW wind 10 to 20 kt. Seas 9 to 14 ft.
.THU...W wind up to 15 kt. Seas 5 to 10 ft.

$$

806 
FZAK61 PAFC 061307
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
407 AM AKST Sun Dec 6 2020

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.

PKZ399-070145-
407 AM AKST Sun Dec 6 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 947 mb low at 51N 157W moves to 55N 150W at 963 mb Mon morning and
then moves to 60N 150W at 978 mb Tue morning.

$$

PKZ351-070145-
Gulf of Alaska Offshore North of 57N and West of 144W-
407 AM AKST Sun Dec 6 2020

.TODAY...SE wind 20 to 30 kt. Seas 12 to 15 ft building to 15 to
27 ft in the afternoon.
.TONIGHT...SE wind 30 kt. Seas 24 to 30 ft. Rain showers.
.MON...S wind 15 to 30 kt. Seas 19 to 29 ft. Rain showers.
.MON NIGHT...SW wind 20 to 30 kt. Seas 16 to 24 ft.
.TUE THROUGH WED...S wind 10 to 25 kt. Seas 8 to 16 ft.
.THU...W wind 10 to 20 kt. Seas 8 to 11 ft.

$$

PKZ352-070145-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
407 AM AKST Sun Dec 6 2020

...GALE WARNING TONIGHT AND MONDAY...

.TODAY...SE wind 20 to 30 kt. Seas 14 to 28 ft building to 22 to
33 ft in the afternoon. Rain showers.
.TONIGHT...SE wind 20 to 35 kt. Seas 24 to 34 ft. Rain showers.
.MON...SW wind 20 to 35 kt. Seas 17 to 31 ft. Rain showers.
.MON NIGHT...SW wind 20 to 30 kt. Seas 15 to 23 ft.
.TUE THROUGH THU...W wind 15 to 30 kt. Seas 8 to 13 ft.

$$

993 
FZAK61 PAFC 061807
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
907 AM AKST Sun Dec 6 2020

Updated Zone 351

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.

PKZ399-070415-
907 AM AKST Sun Dec 6 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 947 mb low at 51N 157W moves to 55N 150W at 963 mb Mon morning and
then moves to 60N 150W at 978 mb Tue morning.

$$

PKZ351-070415-
Gulf of Alaska Offshore North of 57N and West of 144W-
907 AM AKST Sun Dec 6 2020

.TODAY...SE wind 20 to 30 kt. Seas 12 to 15 ft building to 15 to
27 ft in the afternoon. Slight chance of thunderstorms.
.TONIGHT...SE wind 30 kt. Seas 24 to 30 ft. Rain showers. Slight
chance of thunderstorms in the evening.
.MON...S wind 15 to 30 kt. Seas 19 to 29 ft. Rain showers. 
.MON NIGHT...SW wind 20 to 30 kt. Seas 16 to 24 ft. 
.TUE THROUGH WED...S wind 10 to 25 kt. Seas 8 to 16 ft. 
.THU...W wind 10 to 20 kt. Seas 8 to 11 ft.

$$

PKZ352-070415-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
907 AM AKST Sun Dec 6 2020

...GALE WARNING TONIGHT AND MONDAY...

.TODAY...SE wind 20 to 30 kt. Seas 14 to 28 ft building to 22 to
33 ft in the afternoon. Rain showers. 
.TONIGHT...SE wind 20 to 35 kt. Seas 24 to 34 ft. Rain showers. 
.MON...SW wind 20 to 35 kt. Seas 17 to 31 ft. Rain showers. 
.MON NIGHT...SW wind 20 to 30 kt. Seas 15 to 23 ft. 
.TUE THROUGH THU...W wind 15 to 30 kt. Seas 8 to 13 ft.

$$

197 
FZAK61 PAFC 070003
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
303 PM AKST Sun Dec 6 2020

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.

PKZ399-071415-
303 PM AKST Sun Dec 6 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 950 mb low at 53N 156W moves to 57N 150W at 967 mb Mon morning 
and then moves inland over the Kenai Peninsula Mon evening.

$$

PKZ351-071415-
Gulf of Alaska Offshore North of 57N and West of 144W-
303 PM AKST Sun Dec 6 2020

...GALE WARNING MONDAY...

.TONIGHT...SE wind 20 to 30 kt. Seas 24 to 30 ft. Rain showers.
.MON...S wind 20 to 35 kt. Seas 19 to 28 ft. Rain showers.
.MON NIGHT...SW wind 30 kt. Seas 16 to 24 ft.
.TUE...SW wind 15 to 25 kt. Seas 12 to 15 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 13 ft.
.WED THROUGH THU...W wind up to 20 kt. Seas 8 to 12 ft.
.FRI...SE wind up to 20 kt. Seas 6 ft.

$$

PKZ352-071415-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
303 PM AKST Sun Dec 6 2020

...GALE WARNING THROUGH MONDAY...

.TONIGHT...S wind 20 to 35 kt. Seas 22 to 33 ft. Rain showers.
.MON...SW wind 20 to 35 kt. Seas 17 to 30 ft.
.MON NIGHT...SW wind 20 to 30 kt. Seas 16 to 24 ft.
.TUE...SW wind 20 to 30 kt. Seas 15 ft.
.TUE NIGHT...SW wind 15 to 30 kt. Seas 12 to 15 ft.
.WED THROUGH FRI...E wind 10 to 25 kt. Seas 7 to 12 ft.

$$

259 
FZAK61 PAFC 071233
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
333 AM AKST Mon Dec 7 2020

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.

PKZ399-080130-
333 AM AKST Mon Dec 7 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 964 mb low at 55N 150W moves inland across the Kenai Peninsula Tue
morning. A low from the eastern Bering moves to 57N 154W at 1001 mb 
Wed morning.

$$

PKZ351-080130-
Gulf of Alaska Offshore North of 57N and West of 144W-
333 AM AKST Mon Dec 7 2020

...GALE WARNING TODAY...

.TODAY...S wind 20 to 35 kt. Seas 19 to 28 ft. Rain showers.
.TONIGHT...SW wind 30 kt. Seas 16 to 24 ft.
.TUE...SW wind 15 to 25 kt. Seas 14 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 12 ft.
.WED...SW wind 10 to 20 kt. Seas 7 to 12 ft.
.THU THROUGH FRI...SE wind 10 to 25 kt. Seas 7 to 12 ft.

$$

PKZ352-080130-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
333 AM AKST Mon Dec 7 2020

...GALE WARNING TODAY...

.TODAY...SW wind 20 to 35 kt. Seas 17 to 30 ft.
.TONIGHT...SW wind 20 to 30 kt. Seas 16 to 24 ft.
.TUE...SW wind 30 kt. Seas 15 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 13 ft.
.WED THROUGH THU...NW wind 10 to 25 kt. Seas 7 to 12 ft.
.FRI...E wind 15 to 30 kt. Seas 8 to 13 ft.

$$

504 
FZAK61 PAFC 080007
OFFAER

Offshore Waters Forecast
National Weather Service Anchorage AK
307 PM AKST Mon Dec 7 2020

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.

PKZ399-081415-
307 PM AKST Mon Dec 7 2020
.SYNOPSIS FOR THE WESTERN GULF OF ALASKA...

A 973 mb low at 59N 150W moves inland Tue morning. Its front
extends over the North Gulf Coast through Wed afternoon. A 1000 mb
Alaska Peninsula low moves along the front to 59N 150W at 1009 mb
by Wed afternoon. Its front moves over the Western Gulf through Wed 
afternoon.

$$

PKZ351-081415-
Gulf of Alaska Offshore North of 57N and West of 144W-
307 PM AKST Mon Dec 7 2020

.TONIGHT...SW wind 30 kt. Seas 16 to 24 ft.
.TUE...SW wind 15 to 25 kt. Seas 14 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 12 ft.
.WED...S wind 10 to 20 kt. Seas 10 ft.
.WED NIGHT...W wind up to 20 kt. Seas 7 to 11 ft.
.THU THROUGH FRI...SE wind 10 to 25 kt. Seas 7 to 12 ft.
.SAT...SE wind 15 to 25 kt. Seas 13 to 16 ft.

$$

PKZ352-081415-
Gulf of Alaska Offshore South of 57N North of 55N and West of
144W-
307 PM AKST Mon Dec 7 2020

.TONIGHT...SW wind 30 kt. Seas 15 to 23 ft.
.TUE...SW wind 20 to 30 kt. Seas 15 ft.
.TUE NIGHT...SW wind 15 to 25 kt. Seas 12 to 15 ft.
.WED...SW wind 10 to 20 kt. Seas 9 to 12 ft.
.WED NIGHT...W wind 15 to 25 kt. Seas 8 to 11 ft.
.THU THROUGH SAT...S wind 15 to 30 kt. Seas 8 to 13 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
501 AM AKST Fri Dec 4 2020

.ANALYSIS AND UPPER LEVELS...

A longwave trough extends from southwest Alaska over to the AlCan
border. A ridge to the south of this feature remains over the
eastern Bering. A weakening area of low pressure has moved inland
over the Kuskokwim Delta, bringing light snow to the northern
Delta. Three surface lows in the North Pacific are increasing
winds and bringing rain for the Aleutians as their associated
fronts approach the area. Besides some precipitation over the
central Gulf, Southcentral looks to remain largely dry. One area
to note is the presence of low stratus visible on webcams from
Palmer to Eagle River towards the Hillside, which could remain
throughout the day. Northerly flow aloft will usher in cold air
so expect chilly temperatures to continue throughout the day.

&&

.MODEL DISCUSSION...

Models are in fair agreement as to the synoptic pattern for the
short term.

&&

.AVIATION...

PANC...There is a possibility of MVFR conditions due to low
stratus through this morning becoming VFR in the evening. Light
winds will persist.

&&

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

Low level clouds have developed along the Chugach Mountains in
northern Cook Inlet this morning. The northerly flow off the Inlet
in the area will likely keep them around for much of the day.

An upper level trough over the Copper River Basin this morning is
keeping some light snowfall over the Richardson Highway corridor.
This snow will not accumulate much and should end later today, but
clouds will be slow to dissipate in the lower elevations of the
Basin as an inversion will help trap the moisture under it. There
is a better chance for clearing on Saturday for the Copper River
Basin.

By Saturday night, the next system will move into the Gulf of
Alaska and Kodiak Island. This will do what most fronts do over
Kodiak this time of year: snow will fall at the beginning of the
event and then it will switch over to rain for the majority of the
precipitation.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3: Friday
through Sunday)...

A cold core high is expected to persist over the northern Bering
through the forecast period. This will bring clear, cold and dry
weather to Southwest through Sunday. Winds are expected to
increase out of the northeast on Saturday as a strong North
Pacific low approaches the AKPEN and strengthens the pressure
gradient. This may help to increase temperatures a bit by Sunday
as winds mix down the low level inversion. However, wind chill may
drop the apparent temperature as low as -25F over interior areas.
The AKPEN itself will be impacted by the low Saturday afternoon
with the precipitation mainly over the high terrain and coastal
areas southwest of Port Heiden. To the northeast, precipitation
is expected to be mostly downsloped, which will warm areas to the
northwest of the Aleutian Range.

&&

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through
3: Friday through Sunday)...

Two low pressure systems to the south of the Aleutian Chain are
expected to absorb into one by Friday afternoon. Meanwhile, a
very strong North Pacific low will be moving to the east at
approximately 45N. Over the northern Bering mostly calm conditions
are expected underneath a region of high pressure. Weather will
begin to become active once again on Saturday as the strong North
Pacific low begins to turn north. Storm force winds and high seas
are expected over and to the east of the central Aleutians. By
Sunday model guidance begins to differ with the track of the low;
however, gale force easterly winds are expected over the eastern
Bering with northerly gap winds across the central and eastern
Aleutians and the AKPEN.

&&

.MARINE (Days 3 through 5)...

Gulf of Alaska: Off-shore winds through gaps and passes will be
present in the western Gulf on Friday and cold air filters into
the Gulf. Outside of these gap winds, the Gulf stays quiet. There
is a weak low moving north into our forecast area Saturday, but
there is low confidence in this as long range models have been
very inconsistent. We are more confident in northeast flow that
develops over the Gulf on Saturday, which will enhance winds in
the lower Cook Inlet and Shelikof Strait to small craft advisory.
However, there are still no major weather systems forecasted and
no winds above small craft advisory.

Bering: A low pressure system that has been becoming more
pronounced in models the past couple of days will be present just
south of the central Aleutians Friday. It is expected to produce
weak gale force winds in the central Bering Friday. We have at
least moderate confidence in this since its been in the models
for a couple days now. This low should weaken and stay south of
the Aleutians over the weekend. Winds then shift to the northeast
for the Bering and could become weak gale force winds in the
eastern Bering, but this part of the forecast is still being
honed in on. Otherwise the Bering remains quiet.

&&

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

A gigantic North Pacific low will basically influence much, if
not all, of the long term forecast. A couple shortwaves from this
system will spread to the eastern Aleutians and AKPEN as early as
Sunday morning, while the other couple of shortwaves race
northward toward the Kenai Peninsula and Prince William Sound
(PWS) around Sunday afternoon. A broad area of warm air advection
from the Gulf and North Pacific ocean will roll across
Southcentral and Southwest Alaska in the coming days, and this
could lead to a rainy pattern and/or mix with snow inland.
Although much colder temperatures at 850 mb may push as far north
as the Kuskokwim Mountains and well west of the Kuskokwim Delta
earlier in the week, the potential for snowy conditions are
feasible as we take winds and freezing level into account in the
coming days. However, snow may be limited mainly around the Gulf.

Models struggled a bit with the placement of the synoptic low
after Sunday night, but the rain/snow mix pattern looks quite
favorable on this latest model package. An upper level ridge over
the Bering will stall there for a couple days before moving
eastward, and depending on the strength of the aforementioned low,
the ridge will take its time trekking eastward through the middle
of the week.

&&

.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...NONE.
MARINE...Heavy Freezing Spray Warning 139 140 160 180 181
		 Storm Warning 150 155 172 174
         Gale Warning 132 165 170 171 173 175 176 179 180 412 413 414
FIRE WEATHER...NONE.

&&

SYNOPSIS AND MODEL DISCUSSION...CRK
SOUTHCENTRAL ALASKA...EZ
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...KM
MARINE/LONG TERM...CB