Storm Warning 40, NWS Anchorage, AK

504 
FZAK62 PAFC 011150
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
250 AM AKST Sat Feb 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.

PKZ499-020145-
250 AM AKST Sat Feb 1 2025
.SYNOPSIS FOR CENTRAL BERING SEA...

A front across the Northern Bering moves into the Chukchi Sea by 
Midday Sat. A 984 mb low at 54N 166E dissipates by Sat afternoon and 
a 981 mb North Pacific low moves to 55N 172E by Sun morning at 967 
mb. The low moves to 60N 169E by Mon morning. Its front moves over 
the Western Aleutians and Bering through Sun afternoon.

$$

PKZ411-020145-
Bering Sea Offshore West of 180 and East of the International
Dateline-
250 AM AKST Sat Feb 1 2025

...STORM WARNING TONIGHT...

.TODAY...SE wind 15 to 30 kt increasing to 25 to 40 kt in the
afternoon. Seas 11 to 17 ft.
.TONIGHT...SE wind 35 to 50 kt. Seas 13 to 27 ft.
.SUN...S wind 30 to 45 kt. Seas 15 to 28 ft.
.SUN NIGHT...S wind 20 to 35 kt. Seas 12 to 18 ft.
.MON...S wind 15 to 30 kt. Seas 8 to 13 ft.
.TUE...NE wind up to 15 kt. Seas 4 to 8 ft.
.WED...NE wind 15 to 30 kt. Seas 9 to 14 ft.

$$

PKZ412-020145-
Bering Sea Offshore 171W to 180 and North of 56N-
250 AM AKST Sat Feb 1 2025

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...SE wind 30 kt. Seas 11 to 15 ft.
.TONIGHT...SE wind 30 to 40 kt. Seas 13 to 20 ft.
.SUN...SE wind 25 to 35 kt. Seas 14 to 19 ft.
.SUN NIGHT...S wind 20 to 30 kt. Seas 11 to 17 ft.
.MON THROUGH WED...E wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ413-020145-
Bering Sea Offshore 171W to 180 and South of 56N-
250 AM AKST Sat Feb 1 2025

...GALE WARNING THROUGH SUNDAY...

.TODAY...SE wind 30 to 40 kt. Seas 12 to 16 ft.
.TONIGHT...SE wind 35 to 45 kt diminishing to 25 to 40 kt after
midnight. Seas 14 to 21 ft.
.SUN...S wind 20 to 35 kt. Seas 11 to 19 ft. Rain.
.SUN NIGHT...S wind 15 to 30 kt. Seas 9 to 14 ft.
.MON THROUGH TUE...SE wind 10 to 25 kt. Seas 6 to 11 ft.
.WED...E wind 25 to 35 kt. Seas 11 to 16 ft.

$$

PKZ414-020145-
Bering Sea Offshore East of 171W-
250 AM AKST Sat Feb 1 2025

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...SE wind 20 to 30 kt. Seas 8 to 13 ft.
.TONIGHT...SE wind 20 to 35 kt. Seas 9 to 16 ft.
.SUN...SE wind 20 to 35 kt. Seas 9 to 17 ft.
.SUN NIGHT...SE wind 20 to 35 kt. Seas 8 to 16 ft.
.MON THROUGH WED...SE wind 15 to 30 kt. Seas 7 to 12 ft.

$$

356 
FZAK62 PAFC 012329
OFFALU

Offshore Waters Forecast
National Weather Service Anchorage AK
229 PM AKST Sat Feb 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.

PKZ499-021315-
229 PM AKST Sat Feb 1 2025
.SYNOPSIS FOR CENTRAL BERING SEA...

A 975 mb low at 50N 177E moves to 57N 171E at 971 mb Sun morning.
This low moves northward into Kamchatka through Sun night. A 
front across the Central Aleutians today moves to the Eastern 
Aleutians through Mon afternoon.

$$

PKZ411-021315-
Bering Sea Offshore West of 180 and East of the International
Dateline-
229 PM AKST Sat Feb 1 2025

...GALE WARNING THROUGH SUNDAY NIGHT...

.TONIGHT...SE wind 30 to 45 kt. Seas 15 to 23 ft.
.SUN...S wind 30 to 45 kt. Seas 15 to 26 ft.
.SUN NIGHT...S wind 20 to 35 kt. Seas 12 to 19 ft.
.MON...S wind 15 to 30 kt. Seas 9 to 14 ft.
.MON NIGHT...SE wind up to 15 kt. Seas 6 to 11 ft.
.TUE...NE wind up to 15 kt. Seas 4 to 7 ft.
.WED THROUGH THU...E wind 15 to 30 kt. Seas 9 to 14 ft.

$$

PKZ412-021315-
Bering Sea Offshore 171W to 180 and North of 56N-
229 PM AKST Sat Feb 1 2025

...GALE WARNING THROUGH SUNDAY...

.TONIGHT...SE wind 30 to 40 kt. Seas 13 to 20 ft.
.SUN...SE wind 20 to 35 kt. Seas 15 to 20 ft.
.SUN NIGHT...S wind 20 to 30 kt. Seas 13 to 16 ft.
.MON...S wind 10 to 25 kt. Seas 9 to 14 ft.
.MON NIGHT...SE wind up to 20 kt. Seas 6 to 11 ft.
.TUE THROUGH THU...E wind 15 to 30 kt. Seas 8 to 13 ft.

$$

PKZ413-021315-
Bering Sea Offshore 171W to 180 and South of 56N-
229 PM AKST Sat Feb 1 2025

...GALE WARNING THROUGH SUNDAY...

.TONIGHT...SE wind 25 to 40 kt. Seas 15 to 21 ft.
.SUN...S wind 20 to 35 kt. Seas 11 to 19 ft. Rain.
.SUN NIGHT...S wind 15 to 25 kt. Seas 9 to 13 ft.
.MON...S wind 10 to 20 kt. Seas 7 to 11 ft.
.MON NIGHT...SE wind up to 20 kt. Seas 5 to 9 ft.
.TUE...SE wind up to 20 kt. Seas 5 to 8 ft.
.WED THROUGH THU...SE wind 25 to 35 kt. Seas 11 to 16 ft.

$$

PKZ414-021315-
Bering Sea Offshore East of 171W-
229 PM AKST Sat Feb 1 2025

...GALE WARNING THROUGH SUNDAY...

.TONIGHT...SE wind 20 to 35 kt. Seas 9 to 14 ft.
.SUN...SE wind 20 to 35 kt. Seas 8 to 16 ft.
.SUN NIGHT...SE wind 20 to 30 kt. Seas 9 to 14 ft.
.MON...S wind 15 to 25 kt. Seas 6 to 11 ft.
.MON NIGHT...SE wind 15 to 25 kt. Seas 7 ft.
.TUE THROUGH THU...SE wind 15 to 30 kt. Seas 7 to 12 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
525 AM AKST Fri Jan 31 2025

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

Quiet, clear and very cold conditions are still on track into the
upcoming weekend. Temperatures will steadily but slowly warm each
day through Sunday as a strong subsidence inversion develops
under the ridge as it continues to build overhead. Gap winds will
also very slowly drop off with time as the cold air mass and high
pressure over interior valleys both begin to moderate, though
drainage flow out of the Copper Basin could be a bit stubborn to
drop off through the Copper Delta and Thompson Pass. The coldest
temperatures with this Arctic air outbreak are likely occurring
this morning over most of the interior valleys and lower
elevations as clear skies, calming winds and low dew points
combine to create very favorable conditions for the surface to
radiate out heat. Precipitation chances will stay close to zero
through the start of next week.

-AS/CJ

&&

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

Snow showers across Southwest Alaska are ongoing this morning,
especially over the Kuskokwim Delta where a blizzard warning
remains in effect through noon today. Snow began yesterday as a
trough moved over the region. Gusty winds and heavy snow over
Mekoryuk resulted in visibility down to zero for multiple hours. A
front is now quickly approaching the Kuskokwim Delta this
morning, which will maintain snow showers through the morning
hours, with snow eventually expanding across the Lower Kuskokwim
Valley and interior Bristol Bay through this evening.

The forecast has changed little the past 24 hours and a warming
trend remains expected today and tomorrow across Southwest Alaska
as southwest flow behind the front pushes into the coast. Daytime
highs in the upper 20s and lower 30s are forecast across the
Kuskokwim Delta and coastal portions of Bristol Bay today and
tomorrow. For interior Bristol Bay up into the Lower Kuskokwim
Valley single digits into the teens are forecast.

A quick glance at satellite reveals a large occluded upper low
between Kamchatka and the Western Aleutians. This low is lifting a
front across the Central Aleutians with showery conditions noted
over Adak. The presence of the low and a building ridge of high
pressure over the Alaska Peninsula will maintain showery
conditions and an axis of small craft winds and gales from the
Central Aleutians into the Eastern Aleutians. By Saturday a new
upper low is forecast to lift into the western Bering. This next
low will bring another round of widespread gales and building seas
to 20 feet for the Western and Central Aleutians.

-BL

&&

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

The high amplitude flow pattern over the Alaska Region will
undergo some brief duration but significant changes through the
forecast period. An upper level Kamchatka low retreats into the
Russian Arctic, while its elongated trough through the Central
Bering slacks up a bit due to transitory shortwaves through
midweek. The upper level North-South ridge over Mainland Alaska
will be flattened somewhat on Wednesday during the shortwave
passages. However, the ridge re-establishes itself in a broader,
more tilted orientation from the Gulf of Alaska across Western
Alaska into the Bering by Thursday. Model confidence using a
clustered GFS/ECMWF/Canadian blend for the larger scale features
remains quite good, while reducing the uncertainty over the finer
details.

A Kamchatka surface low extends a front through the Western and
Central Aleutians and Bering for Monday. Southerly winds with
locally moderate snow on the leading Northern edge of the front
changes to rain through the Central Aleutians and Bering and
dissipates in the Northern Bering late Tuesday. A North Pacific
low and front slip across the Western Aleutians late Tuesday.
Locally moderate rain and gusty winds with areas of gale force
gusts spread over the Western And Central Aleutians and Bering
Wednesday and Thursday. Interior Alaska lingers under more
seasonal temperatures and variably cloudy skies.

-KZ

&&

.AVIATION...

PANC...VFR conditions and light northerly winds will prevail
through the TAF period.

&&