Storm Warning 80, NWS Anchorage, AK

361 
FZAK62 PAFC 202316
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
316 PM AKDT Mon Apr 20 2026

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.

PKZ499-211300-
316 PM AKDT Mon Apr 20 2026
.SYNOPSIS FOR CENTRAL BERING SEA...

A 989 mb low at 49N 177E moves to 54N 173W at at 975 mb by Wed
afternoon.

$$

PKZ411-211300-
Bering Sea Offshore West of 180 and East of the International
Dateline-
316 PM AKDT Mon Apr 20 2026

...STORM WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...NE wind 30 to 45 kt. Seas 12 to 20 ft. Rain and snow.
.TUE...NE wind 30 to 45 kt increasing to 40 to 50 kt in the
afternoon. Seas 15 to 23 ft. Rain and snow.
.TUE NIGHT...NE wind 40 to 50 kt. Seas 21 to 27 ft. Snow and rain.
.WED...N wind 30 to 45 kt. Seas 19 to 26 ft.
.WED NIGHT...N wind 25 to 40 kt. Seas 15 to 21 ft.
.THU...NW wind 15 to 30 kt. Seas 9 to 14 ft.
.FRI THROUGH SAT...N wind 15 to 30 kt. Seas 6 to 9 ft.

$$

PKZ412-211300-
Bering Sea Offshore 171W to 180 and North of 56N-
316 PM AKDT Mon Apr 20 2026

...STORM WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...E wind 25 to 40 kt. Seas 9 to 14 ft. Freezing spray.
.TUE...NE wind 30 to 40 kt increasing to 40 to 50 kt in the
afternoon. Seas 12 to 20 ft. Freezing spray.
.TUE NIGHT...NE wind 35 to 50 kt. Seas 15 to 23 ft. Snow. Freezing 
spray.
.WED...E wind 35 to 50 kt. Seas 12 to 20 ft.
.WED NIGHT...NE wind 20 to 35 kt. Seas 11 to 17 ft.
.THU...W wind 25 kt. Seas 7 to 12 ft.
.FRI...SW wind 20 kt. Seas 4 to 7 ft.
.SAT...E wind 20 to 30 kt. Seas 4 ft.

$$

PKZ413-211300-
Bering Sea Offshore 171W to 180 and South of 56N-
316 PM AKDT Mon Apr 20 2026

...GALE WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...SE wind 20 to 30 kt. Seas 9 to 13 ft.
.TUE...E wind 30 to 45 kt. Seas 11 to 19 ft. Rain.
.TUE NIGHT...E wind 25 to 40 kt diminishing to 15 to 30 kt after
midnight. Seas 11 to 18 ft. Rain showers.
.WED...NE wind 15 to 30 kt. Seas 10 to 15 ft.
.WED NIGHT...NW wind 20 to 30 kt. Seas 10 to 15 ft.
.THU THROUGH FRI...W wind 15 to 25 kt. Seas 7 to 12 ft.
.SAT...S wind 30 kt. Seas 5 to 9 ft.

$$

PKZ414-211300-
Bering Sea Offshore East of 171W-
316 PM AKDT Mon Apr 20 2026

...GALE WARNING TUESDAY AND TUESDAY NIGHT...

.TONIGHT...SE wind 10 to 25 kt. Seas 3 to 8 ft.
.TUE...E wind 25 to 40 kt. Seas 4 to 9 ft. Rain.
.TUE NIGHT...SE wind 25 to 40 kt diminishing to 20 to 30 kt after
midnight. Seas 4 to 9 ft. Rain.
.WED...SE wind 20 to 30 kt. Seas 5 to 10 ft.
.WED NIGHT...S wind 30 kt. Seas 7 to 12 ft.
.THU THROUGH FRI...S wind 15 to 30 kt. Seas 5 to 10 ft.
.SAT...SE wind 15 to 30 kt. Seas 3 to 6 ft.

$$

296 
FZAK62 PAFC 211228
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
428 AM AKDT Tue Apr 21 2026

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.

PKZ499-220045-
428 AM AKDT Tue Apr 21 2026
.SYNOPSIS FOR CENTRAL BERING SEA...

A 982 mb low at 51N 177E moves to 53N 178W at 966 mb by Wed 
morning. The low continues to 57N 172W at 979 mb by Thu morning.

$$

PKZ411-220045-
Bering Sea Offshore West of 180 and East of the International
Dateline-
428 AM AKDT Tue Apr 21 2026

...STORM WARNING TONIGHT...

.TODAY...NE wind 25 to 40 kt increasing to 35 to 45 kt in the
afternoon. Seas 15 to 23 ft. Rain and snow.
.TONIGHT...NE wind 35 to 50 kt. Seas 19 to 27 ft. Snow.
.WED...N wind 30 to 45 kt. Seas 16 to 26 ft. Freezing spray.
.WED NIGHT...N wind 20 to 35 kt. Seas 14 to 20 ft.
.THU THROUGH FRI...NW wind 10 to 25 kt. Seas 8 to 13 ft.
.SAT...NE wind 15 to 25 kt. Seas 6 to 11 ft.

$$

PKZ412-220045-
Bering Sea Offshore 171W to 180 and North of 56N-
428 AM AKDT Tue Apr 21 2026

...STORM WARNING THROUGH TONIGHT...

.TODAY...NE wind 35 to 50 kt. Seas 11 to 19 ft. Rain. Freezing
spray.
.TONIGHT...E wind 35 to 50 kt. Seas 13 to 21 ft. Snow and rain.
Freezing spray.
.WED...E wind 20 to 35 kt. Seas 11 to 17 ft. Widespread rain and
snow showers.
.WED NIGHT...NE wind 10 to 25 kt. Seas 10 to 14 ft.
.THU THROUGH FRI...W wind 10 to 25 kt. Seas 7 to 12 ft.
.SAT...E wind 10 to 25 kt. Seas 6 ft.

$$

PKZ413-220045-
Bering Sea Offshore 171W to 180 and South of 56N-
428 AM AKDT Tue Apr 21 2026

...GALE WARNING TODAY...

.TODAY...E wind 25 to 40 kt. Seas 10 to 17 ft. Rain.
.TONIGHT...E wind 15 to 30 kt. Seas 11 to 15 ft. Widespread rain
showers.
.WED...E wind 15 to 30 kt. Seas 10 to 15 ft. Widespread rain
showers.
.WED NIGHT...W wind 10 to 25 kt. Seas 9 to 14 ft.
.THU THROUGH FRI...W wind 15 to 25 kt. Seas 7 to 11 ft.
.SAT...E wind 20 to 30 kt. Seas 7 to 12 ft.

$$

PKZ414-220045-
Bering Sea Offshore East of 171W-
428 AM AKDT Tue Apr 21 2026

...GALE WARNING THROUGH WEDNESDAY...

.TODAY...E wind 25 to 40 kt. Seas 4 to 9 ft. Rain.
.TONIGHT...SE wind 25 to 40 kt diminishing to 15 to 30 kt after
midnight. Seas 4 to 9 ft. Rain.
.WED...SE wind 20 to 35 kt. Seas 5 to 10 ft. Widespread rain and
snow showers.
.WED NIGHT...SE wind 25 to 35 kt. Seas 6 to 11 ft.
.THU THROUGH FRI...S wind 15 to 30 kt. Seas 5 to 10 ft.
.SAT...SE wind 15 to 30 kt. Seas 3 to 6 ft.

$$

142 
FZAK62 PAFC 212236
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
236 PM AKDT Tue Apr 21 2026

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.

PKZ499-221245-
236 PM AKDT Tue Apr 21 2026
.SYNOPSIS FOR CENTRAL BERING SEA...

A 983 mb low at 50N 177E moves to 53N 178W at 967 mb by Wed
morning. The low continues to 59N 173W at 984 mb by Thu afternoon. 

$$

PKZ411-221245-
Bering Sea Offshore West of 180 and East of the International
Dateline-
236 PM AKDT Tue Apr 21 2026

...STORM WARNING TONIGHT...

.TONIGHT...NE wind 35 to 50 kt. Seas 19 to 27 ft. Snow showers.
.WED...N wind 30 to 45 kt. Seas 16 to 26 ft. Freezing spray.
.WED NIGHT...N wind 20 to 35 kt. Seas 14 to 20 ft.
.THU...NW wind 15 to 25 kt. Seas 10 to 15 ft.
.THU NIGHT...NW wind 10 to 25 kt. Seas 8 to 12 ft.
.FRI...NW wind 10 to 20 kt. Seas 6 to 9 ft.
.SAT...NE wind 15 to 25 kt. Seas 6 to 11 ft.
.SUN...NW wind 30 kt. Seas 11 to 17 ft.

$$

PKZ412-221245-
Bering Sea Offshore 171W to 180 and North of 56N-
236 PM AKDT Tue Apr 21 2026

...STORM WARNING TONIGHT...

.TONIGHT...E wind 35 to 50 kt. Seas 14 to 22 ft. Rain showers.
Freezing spray.
.WED...E wind 20 to 35 kt. Seas 11 to 17 ft. Rain showers and
snow showers.
.WED NIGHT...NE wind 10 to 25 kt. Seas 11 to 14 ft. Snow showers.
.THU...W wind 10 to 20 kt. Seas 8 to 12 ft.
.THU NIGHT...W wind 10 to 25 kt. Seas 6 to 10 ft.
.FRI...W wind 15 kt. Seas 7 ft.
.SAT...E wind 10 to 25 kt. Seas 6 ft.
.SUN...N wind 30 kt. Seas 12 to 20 ft.

$$

PKZ413-221245-
Bering Sea Offshore 171W to 180 and South of 56N-
236 PM AKDT Tue Apr 21 2026

.TONIGHT...E wind 15 to 30 kt. Seas 11 to 15 ft. Rain showers.
.WED...E wind 15 to 30 kt. Seas 10 to 15 ft. Rain showers.
.WED NIGHT...NW wind 15 to 30 kt becoming W after midnight.
Seas 9 to 15 ft.
.THU...W wind 25 kt. Seas 10 ft.
.THU NIGHT...W wind 20 kt. Seas 8 ft.
.FRI...W wind 20 kt. Seas 8 ft.
.SAT...E wind 20 to 30 kt. Seas 7 to 12 ft.
.SUN...NW wind 35 kt. Seas 15 to 23 ft.

$$

PKZ414-221245-
Bering Sea Offshore East of 171W-
236 PM AKDT Tue Apr 21 2026

...GALE WARNING THROUGH WEDNESDAY NIGHT...

.TONIGHT...SE wind 25 to 40 kt diminishing to 15 to 30 kt after
midnight. Seas 4 to 9 ft. Rain.
.WED...SE wind 20 to 35 kt. Seas 5 to 10 ft. Rain showers.
.WED NIGHT...S wind 25 to 35 kt. Seas 7 to 12 ft. Rain showers
and snow showers.
.THU...S wind 20 to 30 kt. Seas 6 to 11 ft.
.THU NIGHT...SW wind 20 kt. Seas 3 to 8 ft.
.FRI...S wind 15 kt. Seas 3 to 6 ft.
.SAT...SE wind 15 to 30 kt. Seas 3 to 6 ft.
.SUN...SE wind 20 to 30 kt. Seas 9 to 17 ft.

$$

952 
FZAK62 PAFC 221218
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
418 AM AKDT Wed Apr 22 2026

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.

PKZ499-230200-
418 AM AKDT Wed Apr 22 2026
.SYNOPSIS FOR CENTRAL BERING SEA...

A 964 mb low at 53N 179W moves to 58N 173W at 978 mb by Thu
morning. The low continues to 62N 177W at 992 mb by Fri morning.

$$

PKZ411-230200-
Bering Sea Offshore West of 180 and East of the International
Dateline-
418 AM AKDT Wed Apr 22 2026

...GALE WARNING THROUGH TONIGHT...

.TODAY...N wind 30 to 45 kt. Seas 16 to 27 ft. Freezing spray.
.TONIGHT...N wind 20 to 35 kt. Seas 13 to 21 ft.
.THU...NW wind 15 to 30 kt. Seas 11 to 16 ft.
.THU NIGHT...NW wind 10 to 25 kt. Seas 8 to 12 ft.
.FRI...W wind 15 to 30 kt. Seas 4 to 8 ft.
.SAT...NE wind 30 to 45 kt. Seas 9 to 14 ft.
.SUN...NW wind 30 to 40 kt. Seas 15 to 19 ft.

$$

PKZ412-230200-
Bering Sea Offshore 171W to 180 and North of 56N-
418 AM AKDT Wed Apr 22 2026

.TODAY...E wind 20 to 30 kt. Seas 13 to 18 ft. Rain showers and snow
showers.
.TONIGHT...NE wind 15 to 30 kt. Seas 11 to 14 ft.
.THU...W wind 10 to 25 kt. Seas 9 to 14 ft.
.THU NIGHT...W wind 20 kt. Seas 6 to 10 ft.
.FRI...W wind up to 20 kt. Seas 5 to 8 ft.
.SAT...E wind 25 to 40 kt. Seas 7 to 12 ft.
.SUN...NE wind 25 to 35 kt. Seas 14 to 22 ft.

$$

PKZ413-230200-
Bering Sea Offshore 171W to 180 and South of 56N-
418 AM AKDT Wed Apr 22 2026

...GALE WARNING THROUGH TONIGHT...

.TODAY...E wind 20 to 35 kt. Seas 11 to 16 ft. Rain showers and
snow showers.
.TONIGHT...W wind 25 to 40 kt diminishing to 20 to 30 kt after
midnight. Seas 9 to 17 ft.
.THU...W wind 25 kt. Seas 8 to 12 ft.
.THU NIGHT...W wind 20 kt. Seas 8 ft.
.FRI...SW wind 15 to 30 kt. Seas 5 to 8 ft.
.SAT...E wind 25 to 40 kt. Seas 8 to 16 ft.
.SUN...W wind 30 to 45 kt. Seas 16 to 24 ft.

$$

PKZ414-230200-
Bering Sea Offshore East of 171W-
418 AM AKDT Wed Apr 22 2026

...GALE WARNING THROUGH TONIGHT...

.TODAY...SE wind 25 to 40 kt. Seas 9 to 14 ft.
.TONIGHT...S wind 30 to 40 kt. Seas 11 to 19 ft. Rain showers and
snow showers.
.THU...S wind 30 kt. Seas 9 to 17 ft.
.THU NIGHT...SW wind 20 kt. Seas 3 to 8 ft.
.FRI...SW wind up to 15 kt. Seas 3 to 6 ft.
.SAT...SE wind 25 to 40 kt. Seas 7 to 12 ft.
.SUN...S wind 30 to 45 kt. Seas 13 to 28 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
459 PM AKDT Sun Apr 19 2026

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

Conditions gradually improve from tonight into tomorrow morning as
a low and front progress eastwards and out of Southcentral. While
breezy conditions will persist, precipitation will become showery
and remain mostly limited to higher elevations for Monday and the
first half of Tuesday. From the latter half of Tuesday into
Wednesday, incoming shortwaves and a robust atmospheric river will
bring a return to wet and windy conditions. Here are the hazards
we're monitoring:

* Winter Weather Advisory in Northern Copper Valley and from about
  Talkeetna north in Susitna Valley: Snow through Monday
  afternoon.

* High Surf Advisory in Kachemak Bay: The combination of high tide
  and southwest winds could lead to breaking waves of 4-8 ft, with
  the potential to move debris and cause minor erosion.

* Flood Advisory due to an ice jam along Anchor River.

* Looking ahead to Wednesday's atmospheric river, there could be a
  possibility of flooding depending on the intensity of
  precipitation and potential snowmelt.

-KC

&&

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

A 983 mb low in the western Bering continues to weaken tonight.
This low is promoting continual mostly light snowfall across
Southwest Alaska. Steady snow this morning across the Kuskokwim
Valley and along the Western Alaska Range has become more showery
as cold air moved in from the southwest off of the Bering Sea.
Some areas near Bethel and Dillingham have seen precipitation
switch over to a light snow/rain mix, but will likely switch back
to snowfall tonight as temperatures decline. Off and on rain/snow
shower mix will continue across mainland Southwest through
Monday. Most snow accumulation will occur along the Western
Alaska Range due to westerly upslope flow enhancement with little
additional accumulation elsewhere.

The low in the Bering will be replaced steadily with upper-level
energy approaching from the west, and surface lows approaching
from the south. Between now and Tuesday, an elongated trough axis
will remain stretched from the Southwest coastline to near Adak,
promoting ongoing unsettled weather and light precipitation across
the region.

By Tuesday, a more organized and widespread push of moisture and
stronger winds lifts up from the North Pacific and impacts
Adak/Atka, Nikolski/Unalaska/Akutan, and the Pribilof Islands with
moderate to heavy rain. The moderate to heavy precipitation makes
it to mainland Southwest Alaska by late Tuesday afternoon to
early Tuesday evening. Precipitation may start as a period of snow
along the Kuskokwim Delta/Kuskokwim Delta Coast Tuesday afternoon
before changing to rain/snow mix and eventually rain through
Tuesday night. The tropical moisture tap shifts eastward from
Unalaska/Nikolski/Akutan to over the Alaska Peninsula Tuesday
night into Wednesday morning. Moderate to heavy rain at times is
looking likely from False Pass eastward to Chignik Tuesday night
into Wednesday morning. However, this moisture axis does not look
to hang around long as it continues eastward to Kodiak Island by
late Wednesday morning. Stay tuned for further forecast updates
regarding the development of the next unseasonably strong Bering
low for this upcoming workweek.

-CL/DAN

&&

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

Unsettled conditions will likely persist across much of Alaska
through the upcoming week. A low over the southern Bering Sea will
move toward Nunivak Island by Thursday morning. South to
southwesterly flow with gusts up to 40 mph will move across
Kuskokwim Bay/Delta area. Concerns for coastal impacts is low due
to shorefast ice and some added protection from the expansive ice
floe over the eastern Bering Sea.

The accompanied front from the Bering low will move into the
western Gulf of Alaska, drawing with it a relatively deeper surge
of moisture. Coastal areas in the northern Gulf and Kodiak Island
and higher elevations of the Alaska Range will likely see the most
precipitation. Away from the coast, expect several days of mixed
precipitation to continue, including rain at lower elevations and
snow at higher elevations. Southeasterly flow will allow some
downsloping to the west of the Chugach and Kenai Mountains.

Model agreement decreases significantly late in the week, though
some semblance of a low continues to place a low in the southern
Bering Sea with southerly flow persisting into Southcentral. It is
probable that our overall pattern will not deviate much from what
we are already seeing, however, the details should become clear
with the timing of these key wind and precipitation features as we
approach the mid to late week timeframe.

&&

.AVIATION...

PANC...Gusty southeast winds will continue through this
afternoon, with peak gusts to around 35 to 40 kts possible until
around midnight. VFR conditions will likely prevail as
southeasterly flow over the Chugach mountains partially downslopes
and evaporates some of the low level moisture; however, expect a
period of steady rainfall and MVFR ceilings late this afternoon
through early this evening as winds begin to shift more southerly.
Gusty winds continue overnight through Monday afternoon, but
should begin to gradually decrease by late Monday.

&&

Preliminary Local Storm Report
National Weather Service Anchorage AK
122 AM AKDT Mon Apr 20 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0308 PM     Snow             5 E Valdez              61.11N 146.22W
04/19/2026  M0.8 Inch        Chugach            AK   CO-OP Observer

&&

AS