Storm Warning 159, NWS Anchorage, AK

078 
FZAK62 PAFC 020031
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
331 PM AKST Mon Dec 1 2025

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.

PKZ499-021445-
331 PM AKST Mon Dec 1 2025
.SYNOPSIS FOR CENTRAL BERING SEA...
A 968 mb N Pacific low moves to 54N 166W at 958 mb early Tue morning
then moves westward to 54N 171W at 967 mb Tue afternoon. By 
Wednesday afternoon the low dips across the Eastern Aleutians and 
back into the N Pacific near 51N 167W at 985 mb.

$$

PKZ411-021445-
Bering Sea Offshore West of 180 and East of the International
Dateline-
331 PM AKST Mon Dec 1 2025

...GALE WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...NE wind 40 kt becoming 30 to 45 kt after midnight. Seas
19 to 26 ft.
.TUE...N wind 25 to 40 kt. Seas 19 to 26 ft.
.TUE NIGHT...N wind 25 to 40 kt. Seas 17 to 26 ft.
.WED...NE wind 20 to 35 kt. Seas 14 to 22 ft.
.WED NIGHT...E wind 15 to 30 kt. Seas 10 to 17 ft.
.THU...SE wind 25 to 40 kt. Seas 9 to 17 ft.
.FRI...S wind up to 20 kt. Seas 10 to 14 ft.
.SAT...E wind 10 to 20 kt. Seas 8 to 12 ft.

$$

PKZ412-021445-
Bering Sea Offshore 171W to 180 and North of 56N-
331 PM AKST Mon Dec 1 2025

...STORM WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...NE wind 40 to 50 kt. Seas 19 to 26 ft.
.TUE...NE wind 45 to 55 kt. Seas 24 to 30 ft.
.TUE NIGHT...NE wind 35 to 50 kt. Seas 21 to 29 ft. Snow and rain.
.WED...N wind 30 to 45 kt. Seas 16 to 24 ft.
.WED NIGHT...NE wind 20 to 35 kt. Seas 11 to 19 ft.
.THU THROUGH SAT...NE wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ413-021445-
Bering Sea Offshore 171W to 180 and South of 56N-
331 PM AKST Mon Dec 1 2025

...STORM WARNING THROUGH TUESDAY NIGHT...

.TONIGHT...NE wind 40 to 50 kt. Seas 18 to 29 ft. Snow and rain.
.TUE...N wind 40 to 50 kt. Seas 27 to 33 ft. Snow and rain.
.TUE NIGHT...N wind 35 to 50 kt. Seas 23 to 32 ft. Rain.
.WED...N wind 30 to 40 kt. Seas 20 to 26 ft.
.WED NIGHT...N wind 20 to 35 kt. Seas 15 to 21 ft.
.THU...NE wind 15 to 30 kt. Seas 9 to 14 ft.
.FRI THROUGH SAT...E wind up to 20 kt. Seas 6 to 11 ft.

$$

PKZ414-021445-
Bering Sea Offshore East of 171W-
331 PM AKST Mon Dec 1 2025

...STORM WARNING THROUGH TUESDAY...

.TONIGHT...NE wind 25 to 40 kt increasing to 35 to 50 kt after
midnight. Seas 10 to 18 ft. Rain and snow.
.TUE...NE wind 35 to 50 kt. Seas 15 to 26 ft. Rain and snow.
.TUE NIGHT...NE wind 25 to 40 kt. Seas 10 to 18 ft. Rain and snow.
.WED...NE wind 20 to 35 kt. Seas 8 to 16 ft.
.WED NIGHT...NE wind 20 to 35 kt. Seas 9 to 14 ft.
.THU THROUGH SAT...N wind 15 to 30 kt. Seas 7 to 12 ft.

$$

756 
FZAK62 PAFC 021150
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
250 AM AKST Tue Dec 2 2025

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.

PKZ499-030145-
250 AM AKST Tue Dec 2 2025
.SYNOPSIS FOR CENTRAL BERING SEA...

A 960 mb low at 54N 166W moves to 51N 168W at 980 mb Wed morning 
and then to 53N 165W at 996 mb Thu morning. Its front moves across
the Eastern Aleutians and eastern Bering through Wed. A separate
front moves into the western Bering Wed night. 

$$

PKZ411-030145-
Bering Sea Offshore West of 180 and East of the International
Dateline-
250 AM AKST Tue Dec 2 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 25 to 40 kt. Seas 18 to 25 ft.
.TONIGHT...N wind 25 to 40 kt. Seas 16 to 25 ft.
.WED...NE wind 15 to 30 kt. Seas 13 to 21 ft.
.WED NIGHT...E wind 15 to 25 kt. Seas 10 to 16 ft.
.THU THROUGH SAT...E wind 25 to 40 kt. Seas 9 to 15 ft.

$$

PKZ412-030145-
Bering Sea Offshore 171W to 180 and North of 56N-
250 AM AKST Tue Dec 2 2025

...STORM WARNING THROUGH TONIGHT...

.TODAY...NE wind 40 to 55 kt. Seas 23 to 29 ft.
.TONIGHT...NE wind 35 to 50 kt. Seas 21 to 29 ft. Rain.
.WED...N wind 30 to 45 kt. Seas 16 to 24 ft.
.WED NIGHT...NE wind 20 to 35 kt. Seas 11 to 19 ft.
.THU THROUGH SAT...NE wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ413-030145-
Bering Sea Offshore 171W to 180 and South of 56N-
250 AM AKST Tue Dec 2 2025

...STORM WARNING THROUGH TONIGHT...

.TODAY...N wind 40 to 50 kt. Seas 27 to 31 ft. Rain.
.TONIGHT...N wind 35 to 50 kt. Seas 24 to 31 ft. Rain and snow.
.WED...N wind 40 kt. Seas 20 to 27 ft.
.WED NIGHT...N wind 20 to 35 kt. Seas 14 to 21 ft.
.THU THROUGH SAT...NE wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ414-030145-
Bering Sea Offshore East of 171W-
250 AM AKST Tue Dec 2 2025

...STORM WARNING TODAY...

.TODAY...NE wind 35 to 50 kt. Seas 15 to 25 ft. Rain and snow.
.TONIGHT...NE wind 25 to 40 kt. Seas 11 to 19 ft. Rain and snow.
.WED...NE wind 20 to 35 kt. Seas 8 to 16 ft. Rain.
.WED NIGHT...NE wind 20 to 35 kt. Seas 9 to 14 ft.
.THU THROUGH SAT...N wind 15 to 30 kt. Seas 7 to 12 ft.

$$

287 
FZAK62 PAFC 021609
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
709 AM AKST Tue Dec 2 2025

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.

PKZ499-030115-
709 AM AKST Tue Dec 2 2025
.SYNOPSIS FOR CENTRAL BERING SEA...

A 960 mb low at 54N 166W moves to 51N 168W at 980 mb Wed morning 
and then to 53N 165W at 996 mb Thu morning. Its front moves across
the Eastern Aleutians and eastern Bering through Wed. A separate
front moves into the western Bering Wed night.  

$$

PKZ411-030115-
Bering Sea Offshore West of 180 and East of the International
Dateline-
709 AM AKST Tue Dec 2 2025

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 30 to 45 kt. Seas 18 to 25 ft.
.TONIGHT...N wind 25 to 40 kt. Seas 16 to 25 ft.
.WED...NE wind 15 to 30 kt. Seas 13 to 21 ft.
.WED NIGHT...E wind 15 to 25 kt. Seas 10 to 16 ft.
.THU THROUGH SAT...E wind 25 to 40 kt. Seas 9 to 15 ft.

$$

PKZ412-030115-
Bering Sea Offshore 171W to 180 and North of 56N-
709 AM AKST Tue Dec 2 2025

...STORM WARNING THROUGH TONIGHT...

.TODAY...NE wind 45 to 60 kt. Seas 23 to 29 ft.
.TONIGHT...NE wind 35 to 50 kt. Seas 21 to 29 ft.  and rain.
.WED...N wind 30 to 45 kt. Seas 16 to 24 ft.
.WED NIGHT...NE wind 20 to 35 kt. Seas 11 to 19 ft.
.THU THROUGH SAT...NE wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ413-030115-
Bering Sea Offshore 171W to 180 and South of 56N-
709 AM AKST Tue Dec 2 2025

...STORM WARNING THROUGH TONIGHT...

.TODAY...N wind 45 to 55 kt. Seas 27 to 31 ft. Rain.
.TONIGHT...N wind 35 to 50 kt. Seas 24 to 31 ft. Rain and snow.
.WED...N wind 40 kt. Seas 20 to 27 ft.
.WED NIGHT...N wind 20 to 35 kt. Seas 14 to 21 ft.
.THU THROUGH SAT...NE wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ414-030115-
Bering Sea Offshore East of 171W-
709 AM AKST Tue Dec 2 2025

...STORM WARNING TODAY...

.TODAY...NE wind 40 to 60 kt. Seas 15 to 25 ft. Rain and snow.
.TONIGHT...NE wind 25 to 40 kt. Seas 11 to 19 ft. Rain and snow.
.WED...NE wind 20 to 35 kt. Seas 8 to 16 ft. Rain.
.WED NIGHT...NE wind 20 to 35 kt. Seas 9 to 14 ft.
.THU THROUGH SAT...N wind 15 to 30 kt. Seas 7 to 12 ft.

$$

355 
FZAK62 PAFC 030103
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
403 PM AKST Tue Dec 2 2025

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.

PKZ499-031515-
403 PM AKST Tue Dec 2 2025
.SYNOPSIS FOR CENTRAL BERING SEA...

A 970 mb low near 55N 169W tracks immediately west of Nikolski 
and into the N Pacific early Wed morning, moving to 52N 167W at 
985 mb by late Wednesday morning. The low moves to 51N 164W at 
1004 mb Thu afternoon. Further west a front moves over Shemya Thu 
afternoon.

$$

PKZ411-031515-
Bering Sea Offshore West of 180 and East of the International
Dateline-
403 PM AKST Tue Dec 2 2025

...GALE WARNING TONIGHT...

.TONIGHT...N wind 25 to 40 kt. Seas 16 to 24 ft.
.WED...NE wind 15 to 30 kt. Seas 13 to 21 ft.
.WED NIGHT...E wind 15 to 30 kt. Seas 9 to 16 ft.
.THU...SE wind 25 to 40 kt. Seas 9 to 14 ft.
.THU NIGHT...SE wind 25 to 40 kt. Seas 9 to 17 ft.
.FRI THROUGH SUN...NE wind 10 to 25 kt. Seas 9 to 14 ft.

$$

PKZ412-031515-
Bering Sea Offshore 171W to 180 and North of 56N-
403 PM AKST Tue Dec 2 2025

...STORM WARNING TONIGHT...

.TONIGHT...N wind 40 to 55 kt diminishing to 35 to 45 kt after
midnight. Seas 20 to 29 ft.  and rain.
.WED...N wind 30 to 45 kt. Seas 15 to 23 ft.
.WED NIGHT...NE wind 20 to 35 kt. Seas 10 to 18 ft.
.THU...NE wind 20 to 30 kt. Seas 8 to 13 ft.
.THU NIGHT...E wind 25 kt. Seas 8 ft.
.FRI THROUGH SAT...NE wind 10 to 25 kt. Seas 6 to 10 ft.
.SUN...NE wind 25 to 40 kt. Seas 11 to 19 ft.

$$

PKZ413-031515-
Bering Sea Offshore 171W to 180 and South of 56N-
403 PM AKST Tue Dec 2 2025

...STORM WARNING TONIGHT...

.TONIGHT...N wind 40 to 55 kt becoming 45 kt after midnight. Seas
25 to 32 ft. Rain and snow.
.WED...N wind 30 to 40 kt. Seas 19 to 27 ft. Rain.
.WED NIGHT...N wind 20 to 35 kt. Seas 13 to 21 ft.
.THU...NE wind 15 to 30 kt. Seas 9 to 15 ft.
.THU NIGHT...E wind 15 to 25 kt. Seas 9 ft.
.FRI THROUGH SAT...NE wind 10 to 25 kt. Seas 6 to 9 ft.
.SUN...NE wind 25 to 40 kt. Seas 13 to 21 ft.

$$

PKZ414-031515-
Bering Sea Offshore East of 171W-
403 PM AKST Tue Dec 2 2025

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...NE wind 30 to 45 kt. Seas 12 to 20 ft. Rain and snow.
.WED...NE wind 25 to 40 kt. Seas 9 to 17 ft. Rain and snow.
.WED NIGHT...NE wind 25 to 35 kt. Seas 9 to 16 ft. Rain.
.THU...NE wind 30 kt. Seas 9 to 14 ft.
.THU NIGHT...NE wind 20 to 30 kt. Seas 7 to 11 ft.
.FRI...NE wind 10 to 25 kt. Seas 5 to 8 ft.
.SAT...N wind 25 to 40 kt. Seas 9 to 14 ft.
.SUN...NE wind 30 to 40 kt. Seas 14 to 21 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
459 PM AKST Sun Nov 30 2025

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

An upper level trough/low is continuing to progress north from the
Gulf into the Prince William Sound this afternoon, with colder
cloud tops on GOES West satellite imagery now shifting northwest
and inland across Southcentral. A surface low in the eastern Gulf
is moving up towards the Kenai Peninsula south of Seward. with a
gale force front extending northeast now just working onshore
along the Gulf Coast. A mix of snow, sleet and freezing rain that
came in to parts of the Mat-Su Valleys and Anchorage earlier
today has mostly tapered off for the time being. This is mainly
due to the position of the incoming trough and surface low,
currently causing a bit of easterly flow and downslope drying off
of the Chugach/Kenai Mountains. The latest Anchorage observed
sounding continues to show a warm layer above freezing from about
1000 to 3000 ft above ground level, and this warm air aloft atop
sub-freezing temperatures near the ground is responsible for the
multiple rounds of wintry mix we've seen across parts of
Anchorage, the Mat-Su and Kenai Peninsula over the past 24 hours.
This warm nose is starting to cool compared to this morning,
however, and this cooling trend is likely to continue this
evening.

It remains likely for a transition from a wintry mix to mainly
snow to occur sometime this evening as temperatures aloft cool
while the surface low shifts into Prince William Sound, allowing
easterly flow and downslope drying to abruptly abate. It's still
not out of the question for several inches of snowfall (and less
freezing rain) to move into parts of Anchorage and the Mat Valley
overnight if the transition over to snow can happen on the earlier
side during the overnight tonight.

Shifting attention over to the east, a southerly push of warm air
aloft has made it into portions of the Richardson Highway
corridor, similarly resulting in a mix of snow, sleet and
freezing rain where low level temperatures are still below
freezing. This has mostly been concentrated along a stretch of the
Richardson between Tonsina and Thompson Pass, where a Winter
Weather Advisory has been issued through midday tomorrow as
periods of freezing rain and snow are set to continue into
tomorrow morning. Most of the rest of the Copper Basin is
continuing to stay cold enough for snow, but there will be a
chance for warmer air to continue to spread north overnight
tonight, possibly resulting in more mixing with freezing rain and
sleet as far north and east as Glennallen and McCarthy from this
evening into Monday.

Looking a bit farther out towards midweek, the warm pattern looks
to persist in the near term. It looks like a bit more of a break
in precipitation is now possible from Monday afternoon into
Tuesday morning as the upper trough curves east towards the Yukon
and as an upper level ridge moves in from Southwest. Areas of snow
will linger for the longest across the Copper Basin, especially
from Glennallen north to Paxon and Mentasta Lake. A strong Bering
low will send another front across the region from the southwest
by early Tuesday, sending another batch of warm southerly flow and
precipitation back into Southcentral. With the exception of the
Copper Basin and northern Susitna Valley, it looks likely
temperatures will be warm enough this time for mostly rain to move
in with this front at lower elevations. Still, some mixing with
freezing rain cannot be entirely ruled out for spots that hold on
to colder temperatures, such as the southern Susitna Valley and
western Matanuska Valley. Rain and higher elevation snow will come
to an end for the most part by Wednesday as the surface front
weakens and hangs up along the Gulf coast and as temperatures turn
the corner towards what could be a rather dramatic cooling trend
later this week.

-AS

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA/BERING SEA/ALEUTIANS (Days
1 through 3)...

...ICE STORM WARNING now in effect from 3AM Tuesday to 9AM
Wednesday for significant icing for the Kuskokwim Delta, Kuskokwim
Valley, including Bethel, Aniak, and Crooked Creek...

...Ice accumulations of one half to three quarters of an inch
expected along the coast by Wednesday morning. Ice accumulations
of one quarter of an inch expected across the Kuskokwim Valley.
Total snowfall accumulations up to 4 inches. Winds gusting as high
as 35 mph along the coast and 15 mph for inland locations...

Our well advertised two fold winter storm is well underway across
the Yukon-Kuskokwim (YK) Delta and Kuskokwim Valley. Current
surface temperatures are in the low 20s for Bethel and mid 20s for
Kipnuk, owing to a stout northeast wind resupplying cold air to
the region. These temperatures are about 5 degrees colder than
what the models think they should be. Farther south from the
Kuskokwim Mountains southward, there has been a wind shift to
easterly to southeasterly, and temperatures have warmed into the
mid 30s. Radar returns and surface observations show snow showers
have transitioned to periods of light freezing rain for Bethel,
with the 12z Bethel sounding showing a modest warm nose with the
wet bulb below freezing. The forecast seems to be mostly on track
as precipitation streams northward across the YK Delta and Valley,
though should remain light due to some degree of downsloping from
the Kuskokwim Mountains. The GFS has been the outlier in previous
runs at being much a colder solution overall, but latest runs
have been more in line with the NAM, which has been the favored
model with this system. Therefore, forecaster confidence has
increased since this time yesterday.

Aloft, weak diffluence still remains across Southwest Alaska
downstream of a trough that has dug its way over the North
Pacific, well south of the Aleutians. A couple of weak vorticity
lobes originating from the trough should move across the area this
afternoon/evening, giving a little more lift/forcing to wring out
more light snow/ or light freezing rain. In advance of a fast
moving North Pacific low, the overall 500 mb mean flow becomes
increasingly difluent once again across Southwest Alaska, and its
front will be accompanied by a plethora of moisture as the
low/front nears the Aleutian Chain. The onset of heavier
precipitation across the Ice Storm warned areas likely begins
early Tuesday morning. By this time, the higher resolution
guidance and the global models indicate that 925 mb temperatures
will be above freezing as winds aloft shift from southeasterly to
easterly. With colder northeasterly winds at the surface, Kipnuk
eastward to Bethel, and then onward to Aniak and Crooked Creek,
will see a high impact ice storm. Every bit of guidance says that
this second wave will be significantly stronger and more moisture
rich than the first, so QPF amounts will be substantially higher
as well. This will be a long duration icing event, and will only
wind down as the diffluence aloft relaxes and the front clears the
area Wednesday morning. Depending on exact timing, freezing
drizzle could linger past Wednesday morning, though the vast
majority of precipitation/icing will fall and occur Tuesday
morning to Wednesday morning.

-AM

&&

.LONG TERM FORECAST (Days 4 through 7 - Thursday through
Sunday)...

Thursday begins with the low over the Central Aleutians
weakening. This leads to lower precipitation chances and winds
speeds for the Aleutians and the Southwest Mainland. Southcentral
Alaska will also have a drying trend as higher pressure moves into
the region. All of this less active weather will be accompanied
by a large cooldown due to cold air advection from the north.
Things get more uncertain moving into Friday as the cooldown
continues. Some guidance has the colder air keeping more to the
east, with Western Alaska seeing less cold temperatures whereas
other guidance has the Arctic air taking a more western track and
encompassing almost the whole state. This also has implications
for storm tracks as well. If the colder and more stable air takes
the western track, less active weather can be expected for Western
Alaska, but if the eastern track wins out, there is a potential
for lows to make it into the Bering and cause snowfall and winds
in the Southwest Mainland. The story is the same for the weekend
regarding uncertainty. Regardless of what occurs, what is known
is that Southcentral and Southwest Alaska will experience much
colder temperatures by the end of the week into the weekend and
that less active weather will accompany this cooling trend.

-JAR

&&
.AVIATION...

PANC...

Temperatures in the lower atmosphere are expected to hover right
near freezing through the night and into Monday. With
precipitation moving back into the area this afternoon through
overnight hours, all precipitation types are on the table. Rain is
the most likely type for this afternoon, with SN becoming more
likely this evening. The low causing this precipitation is edging
a little farther to the east which will lessen the chance for
freezing rain and keep it more of a question of rain or snow.
Either way, MVFR to IFR conditions are expected this evening until
Monday morning where at least the visibilities are expected to
return to VFR, though MVFR ceilings may persist through most of
Monday.

&&