Storm Warning 213, NWS Anchorage, AK

600 
FZAK52 PAFC 281159
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
259 AM AKST Sat Dec 28 2024

Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The
Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out.

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.

PKZ199-290100-
259 AM AKST Sat Dec 28 2024
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 970 mb low 70 nm E of Kiska exits towards 220 nm NW of Attu at 
965 mb for Sun afternoon. Its front sweeps to the Eastern 
Aleutians and Bering by Sun morning. A 967 mb low moves along the
front from 240 nm S of Cape Sarichef Sun morning to 70 nm W of 
Saint Paul at 964 mb for Mon morning. A weak low grazes the 
Western and Central Aleutians from Sun morning through Mon 
morning.

$$

PKZ750-290100-
Sitkinak to Castle Cape out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...NW wind 20 kt. Seas 5 ft.
.TONIGHT...Variable wind 10 kt becoming E 15 kt after midnight.
Seas 3 ft.
.SUN...SE wind 35 kt. Seas 5 ft building to 9 ft in the afternoon.
.SUN NIGHT...SE wind 30 kt. Seas 13 ft.
.MON THROUGH TUE...NE wind 30 kt. Seas 12 ft.
.WED...NE wind 30 kt. Seas 8 ft.

$$

PKZ751-290100-
Sitkinak to Castle Cape from 15 to 100 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...NW wind 15 kt. Seas 7 ft.
.TONIGHT...Variable wind 10 kt becoming SE 20 kt after midnight.
Seas 5 ft.
.SUN...SE wind 35 kt. Seas 11 ft.
.SUN NIGHT...SE wind 30 kt. Seas 18 ft.
.MON THROUGH TUE...NE wind 35 kt. Seas 17 ft.
.WED...NE wind 30 kt. Seas 15 ft.

$$

PKZ752-290100-
Castle Cape to Cape Tolstoi out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...Variable wind 10 kt. Seas 4 ft.
.TONIGHT...Variable wind 10 kt becoming E 25 kt after midnight.
Seas 3 ft.
.SUN...E wind 40 kt. Seas 8 ft building to 13 ft in the afternoon.
Rain.
.SUN NIGHT...SE wind 35 kt. Seas 15 ft.
.MON THROUGH TUE...NE wind 25 kt. Seas 11 ft.
.WED...NE wind 20 kt. Seas 9 ft.

$$

PKZ753-290100-
Castle Cape to Cape Tolstoi from 15 to 100 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...NW wind 15 kt. Seas 6 ft.
.TONIGHT...SE wind 20 kt increasing to 30 kt after midnight. Seas
7 ft.
.SUN...SE wind 45 kt. Seas 12 ft building to 23 ft in the
afternoon. Rain.
.SUN NIGHT...SE wind 30 kt. Seas 25 ft.
.MON THROUGH WED...NE wind 25 kt. Seas 15 ft.

$$

PKZ754-290100-
Cape Tolstoi to Cape Sarichef out to 15 NM-
259 AM AKST Sat Dec 28 2024

...STORM WARNING SUNDAY...

.TODAY...Variable wind 10 kt becoming SE 20 kt in the afternoon.
Seas 3 ft.
.TONIGHT...SE wind 30 kt becoming E 40 kt after midnight. Seas 5
ft building to 9 ft after midnight. and rain.
.SUN...E wind 50 kt. Seas 16 ft. Rain and snow.
.SUN NIGHT...S wind 45 kt. Seas 18 ft.
.MON...SE wind 15 kt. Seas 12 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 8 ft.

$$

PKZ755-290100-
Cape Tolstoi to Cape Sarichef from 15 to 100 NM-
259 AM AKST Sat Dec 28 2024

...STORM WARNING SUNDAY...

.TODAY...Variable wind 10 kt becoming SE 20 kt in the afternoon.
Seas 5 ft.
.TONIGHT...SE wind 30 kt becoming E 45 kt after midnight. Seas 6
ft building to 11 ft after midnight.
.SUN...E wind 50 kt. Seas 18 ft building to 28 ft in the
afternoon. Rain.
.SUN NIGHT...S wind 45 kt. Seas 30 ft.
.MON...S wind 15 kt. Seas 14 ft.
.TUE THROUGH WED...NE wind 20 kt. Seas 12 ft.

$$

PKZ756-290100-
Port Heiden to Nelson Lagoon out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...Variable wind 10 kt becoming E 15 kt in the afternoon.
Seas 5 ft.
.TONIGHT...E wind 15 kt becoming SE 25 kt after midnight. Seas 4
ft. Freezing spray.
.SUN...E wind 40 kt. Seas 7 ft.
.SUN NIGHT...SE wind 40 kt. Seas 8 ft.
.MON...E wind 20 kt. Seas 5 ft.
.TUE THROUGH WED...NE wind 25 kt. Seas 5 ft.

$$

PKZ757-290100-
Port Heiden to Nelson Lagoon from 15 to 60 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...E wind 20 kt. Seas 6 ft. Freezing spray.
.TONIGHT...E wind 25 kt. Seas 6 ft. Freezing spray.
.SUN...E wind 35 kt increasing to 45 kt in the afternoon. Seas
12 ft.
.SUN NIGHT...SE wind 45 kt. Seas 13 ft.
.MON...E wind 25 kt. Seas 7 ft.
.TUE...NE wind 30 kt. Seas 9 ft.
.WED...NE wind 25 kt. Seas 8 ft.

$$

PKZ758-290100-
Nelson Lagoon to Cape Sarichef out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...SE wind 15 kt. Seas 6 ft.
.TONIGHT...SE wind 25 kt becoming E 35 kt after midnight. Seas 5
ft.
.SUN...E wind 45 kt. Seas 11 ft. Rain and snow.
.SUN NIGHT...S wind 40 kt. Seas 8 ft.
.MON...SE wind 20 kt. Seas 7 ft.
.TUE THROUGH WED...NE wind 20 kt. Seas 6 ft.

$$

PKZ759-290100-
Nelson Lagoon to Cape Sarichef from 15 to 70 NM-
259 AM AKST Sat Dec 28 2024

...STORM WARNING SUNDAY...

.TODAY...E wind 20 kt. Seas 6 ft.
.TONIGHT...E wind 25 kt increasing to 35 kt after midnight. Seas
8 ft.
.SUN...E wind 50 kt. Seas 11 ft building to 16 ft in the
afternoon.
.SUN NIGHT...S wind 50 kt. Seas 16 ft.
.MON...SE wind 20 kt. Seas 10 ft.
.TUE THROUGH WED...NE wind 25 kt. Seas 8 ft.

$$

PKZ770-290100-
Cape Sarichef to Nikolski Bering Side out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...SE wind 30 kt. Seas 5 ft.
.TONIGHT...SE wind 30 kt becoming E 40 kt after midnight. Seas 8
ft. Rain and snow.
.SUN...NE wind 40 kt becoming NW in the afternoon. Seas 9 ft. Rain
showers.
.SUN NIGHT...SW wind 35 kt. Seas 11 ft.
.MON...S wind 20 kt. Seas 8 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 5 ft.

$$

PKZ772-290100-
Cape Sarichef to Nikolski Bering Side from 15 to 85 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...E wind 30 kt. Seas 8 ft.
.TONIGHT...SE wind 35 kt. Seas 11 ft. Rain.
.SUN...E wind 40 kt. Seas 13 ft. Rain and snow.
.SUN NIGHT...SW wind 35 kt. Seas 14 ft.
.MON...S wind 20 kt. Seas 11 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 8 ft.

$$

PKZ771-290100-
Unalaska Bay-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TONIGHT AND SUNDAY...

.TODAY...SE wind 25 kt. Gusts to 35 kt. Seas 4 ft.
.TONIGHT...E wind 35 kt. Seas 5 ft. Snow and rain.
.SUN...E wind 35 kt becoming NW 20 kt in the afternoon. Seas 5 ft.
Rain showers.
.SUN NIGHT...SW wind 35 kt. Seas 5 ft.
.MON...S wind 15 kt. Seas 2 ft.
.TUE...N wind 10 kt. Seas 3 ft.
.WED...N wind 15 kt. Seas 3 ft.

$$

PKZ773-290100-
Cape Sarichef to Nikolski Pacific Side out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING THROUGH SUNDAY...

.TODAY...SE wind 35 kt. Seas 8 ft. Rain.
.TONIGHT...E wind 40 kt. Seas 12 ft building to 17 ft after
midnight. Rain with snow.
.SUN...NE wind 45 kt becoming W 35 kt in the afternoon. Seas 17
ft. Rain showers.
.SUN NIGHT...SW wind 35 kt. Seas 16 ft.
.MON...SW wind 20 kt. Seas 13 ft.
.TUE...N wind 20 kt. Seas 11 ft.
.WED...N wind 20 kt. Seas 7 ft.

$$

PKZ774-290100-
Cape Sarichef to Nikolski Pacific Side from 15 to 85 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING THROUGH SUNDAY...

.TODAY...SE wind 35 kt. Seas 5 ft building to 9 ft in the
afternoon. Rain.
.TONIGHT...SE wind 35 kt becoming E 45 kt after midnight. Seas 13
ft building to 18 ft after midnight. Rain.
.SUN...E wind 45 kt becoming SW in the afternoon. Seas 22 ft. Rain
showers.
.SUN NIGHT...SW wind 40 kt. Seas 21 ft.
.MON...SW wind 20 kt. Seas 15 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 12 ft.

$$

PKZ775-290100-
Nikolski to Seguam Bering Side out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...SE wind 40 kt. Seas 12 ft. Rain and snow.
.TONIGHT...SE wind 30 kt becoming N 20 kt after midnight. Seas
11 ft. Rain.
.SUN...NW wind 30 kt. Seas 11 ft.
.SUN NIGHT...SW wind 30 kt. Seas 11 ft.
.MON...SW wind 25 kt. Seas 13 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 8 ft.

$$

PKZ776-290100-
Nikolski to Seguam Bering Side from 15 to 85 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...SE wind 40 kt. Seas 14 ft. Rain and snow.
.TONIGHT...SE wind 30 kt becoming N 20 kt after midnight. Seas
11 ft. Snow and rain.
.SUN...W wind 30 kt. Seas 11 ft. Rain.
.SUN NIGHT...SW wind 30 kt. Seas 11 ft.
.MON...SW wind 25 kt. Seas 12 ft.
.TUE THROUGH WED...N wind 20 kt. Seas 8 ft.

$$

PKZ777-290100-
Nikolski to Seguam Pacfic Side out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY AND SUNDAY...

.TODAY...SE wind 40 kt. Seas 13 ft. Rain and snow.
.TONIGHT...SE wind 30 kt becoming N after midnight. Seas 15 ft.
Rain.
.SUN...W wind 35 kt. Seas 15 ft.
.SUN NIGHT...SW wind 25 kt. Seas 14 ft.
.MON...SW wind 25 kt. Seas 16 ft.
.TUE...NE wind 20 kt. Seas 13 ft.
.WED...N wind 20 kt. Seas 9 ft.

$$

PKZ778-290100-
Nikolski to Seguam Pacific Side from 15 to 75 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY AND SUNDAY...

.TODAY...SE wind 40 kt. Seas 14 ft. Rain and snow.
.TONIGHT...E wind 30 kt becoming NW after midnight. Seas 16 ft.
.SUN...W wind 35 kt. Seas 17 ft.
.SUN NIGHT...SW wind 25 kt. Seas 16 ft.
.MON...SW wind 25 kt. Seas 18 ft.
.TUE...NE wind 15 kt. Seas 15 ft.
.WED...N wind 15 kt. Seas 11 ft.

$$

PKZ780-290100-
Seguam to Adak Bering Side out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...S wind 40 kt becoming SW 20 kt in the afternoon. Seas 11
ft subsiding to 7 ft in the afternoon. Widespread rain showers.
.TONIGHT...W wind 15 kt. Seas 6 ft.
.SUN...SW wind 20 kt. Seas 6 ft.
.SUN NIGHT...SW wind 30 kt. Seas 8 ft.
.MON...SW wind 25 kt. Seas 8 ft.
.TUE...NE wind 20 kt. Seas 7 ft.
.WED...NE wind 25 kt. Seas 5 ft.

$$

PKZ781-290100-
Seguam to Adak Bering Side from 15 to 85 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...SE wind 45 kt becoming SW 25 kt in the afternoon. Seas
14 ft. Widespread rain showers and snow.
.TONIGHT...W wind 20 kt. Seas 9 ft.
.SUN...SW wind 20 kt. Seas 8 ft.
.SUN NIGHT...SW wind 30 kt. Seas 10 ft.
.MON...SW wind 25 kt. Seas 11 ft.
.TUE...NE wind 20 kt. Seas 10 ft.
.WED...NE wind 25 kt. Seas 6 ft.

$$

PKZ782-290100-
Seguam to Adak Pacific Side out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...S wind 40 kt becoming W 20 kt in the afternoon. Seas 16
ft. Widespread rain showers.
.TONIGHT...W wind 15 kt. Seas 13 ft.
.SUN...SW wind 20 kt. Seas 13 ft.
.SUN NIGHT...SW wind 30 kt. Seas 18 ft.
.MON...SW wind 25 kt. Seas 18 ft.
.TUE...NE wind 20 kt. Seas 12 ft.
.WED...NE wind 25 kt. Seas 9 ft.

$$

PKZ783-290100-
Seguam to Adak Pacific Side from 15 to 75 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...S wind 40 kt becoming W 25 kt in the afternoon. Seas 16
ft.
.TONIGHT...W wind 25 kt. Seas 13 ft.
.SUN...SW wind 25 kt. Seas 14 ft.
.SUN NIGHT...SW wind 30 kt. Seas 20 ft.
.MON...SW wind 25 kt. Seas 20 ft.
.TUE...NE wind 20 kt. Seas 14 ft.
.WED...NE wind 30 kt. Seas 11 ft.

$$

PKZ784-290100-
Adak to Kiska Bering Side-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...SW wind 35 kt. Seas 16 ft.
.TONIGHT...SW wind 30 kt becoming S 20 kt after midnight. Seas
13 ft.
.SUN...S wind 20 kt. Seas 10 ft.
.SUN NIGHT...SW wind 25 kt. Seas 13 ft.
.MON...SW wind 30 kt. Seas 15 ft.
.TUE...E wind 20 kt. Seas 11 ft.
.WED...E wind 35 kt. Seas 10 ft.

$$

PKZ785-290100-
Adak to Kiska Pacific Side-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY AND SUNDAY...

.TODAY...SW wind 35 kt. Seas 19 ft.
.TONIGHT...SW wind 25 kt. Seas 14 ft.
.SUN...SW wind 35 kt. Seas 18 ft. Snow showers and rain showers.
.SUN NIGHT...W wind 35 kt. Seas 21 ft.
.MON...SW wind 30 kt. Seas 21 ft.
.TUE...NE wind 20 kt. Seas 12 ft.
.WED...E wind 40 kt. Seas 14 ft.

$$

PKZ786-290100-
Kiska to Attu Bering Side-
259 AM AKST Sat Dec 28 2024

...GALE WARNING THROUGH TONIGHT...

.TODAY...SW wind 35 kt. Seas 15 ft. Snow showers.
.TONIGHT...SW wind 35 kt. Seas 17 ft.
.SUN...S wind 20 kt. Seas 15 ft.  and rain showers.
.SUN NIGHT...SW wind 30 kt. Seas 17 ft.
.MON...SW wind 30 kt. Seas 17 ft.
.TUE...E wind 15 kt. Seas 11 ft.
.WED...NE wind 40 kt. Seas 11 ft.

$$

PKZ787-290100-
Kiska to Attu Pacific Side-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TODAY...

.TODAY...W wind 35 kt. Seas 16 ft.
.TONIGHT...SW wind 30 kt. Seas 15 ft.
.SUN...W wind 30 kt. Seas 21 ft. Snow showers and rain showers.
.SUN NIGHT...W wind 35 kt. Seas 23 ft.
.MON...W wind 35 kt. Seas 23 ft.
.TUE...W wind 20 kt. Seas 12 ft.
.WED...E wind 45 kt. Seas 19 ft.

$$

PKZ766-290100-
Pribilof Islands Nearshore Waters-
259 AM AKST Sat Dec 28 2024

...GALE WARNING TONIGHT...

.TODAY...E wind 30 kt. Seas 8 ft. Freezing spray.
.TONIGHT...E wind 35 kt. Seas 12 ft.
.SUN...E wind 30 kt. Seas 13 ft. Snow and rain.
.SUN NIGHT...E wind 35 kt. Seas 17 ft.
.MON...S wind 30 kt. Seas 12 ft.
.TUE THROUGH WED...NE wind 20 kt. Seas 9 ft.

$$

PKZ760-290100-
Bristol Bay greater than 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...NE wind 20 kt. Seas 5 ft. Freezing spray.
.TONIGHT...E wind 30 kt. Seas 6 ft. Freezing spray.
.SUN...E wind 40 kt. Seas 9 ft. Freezing spray.
.SUN NIGHT...SE wind 40 kt. Seas 10 ft.
.MON THROUGH TUE...NE wind 30 kt. Seas 9 ft.
.WED...NE wind 25 kt. Seas 6 ft.

$$

PKZ761-290100-
Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...

.TODAY...NE wind 20 kt. Seas 4 ft. Freezing spray.
.TONIGHT...NE wind 20 kt. Seas 4 ft. Freezing spray.
.SUN...E wind 25 kt increasing to 35 kt in the afternoon. Seas 5
ft. Freezing spray.
.SUN NIGHT...SE wind 35 kt. Seas 5 ft.
.MON THROUGH WED...NE wind 25 kt. Seas 5 ft.

$$

PKZ762-290100-
Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...
...HEAVY FREEZING SPRAY WARNING TONIGHT...

.TODAY...NE wind 25 kt. Seas 3 ft. Freezing spray.
.TONIGHT...NE wind 30 kt. Seas 4 ft. Heavy freezing spray.
.SUN...E wind 40 kt. Seas 6 ft. Freezing spray.
.SUN NIGHT...E wind 45 kt. Seas 8 ft.
.MON THROUGH TUE...NE wind 30 kt. Seas 6 ft.
.WED...NE wind 25 kt. Seas 3 ft.

$$

PKZ763-290100-
Kuskokwim Delta and Etolin Strait out to 15 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...NE wind 20 kt. Seas in ice free waters 2 ft. Heavy
freezing spray.
.TONIGHT...NE wind 25 kt. Seas in ice free waters 2 ft. Freezing
spray.
.SUN...E wind 30 kt increasing to 40 kt in the afternoon. Seas in
ice free waters 4 ft. Freezing spray.
.SUN NIGHT...E wind 45 kt. Seas in ice free waters 7 ft.
.MON...E wind 35 kt. Seas in ice free waters 6 ft.
.TUE...NE wind 25 kt. Seas in ice free waters 4 ft.
.WED...NE wind 20 kt. Seas in ice free waters 3 ft.

$$

PKZ764-290100-
Kuskokwim Delta from 15 to 80 NM-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...NE wind 25 kt. Seas 6 ft. Heavy freezing spray near the ice
edge.
.TONIGHT...E wind 30 kt. Seas 9 ft. Freezing spray.
.SUN...E wind 35 kt increasing to 45 kt in the afternoon. Seas
14 ft. Freezing spray.
.SUN NIGHT...SE wind 55 kt. Seas 19 ft.
.MON...SE wind 40 kt. Seas 16 ft.
.TUE...NE wind 30 kt. Seas 9 ft.
.WED...NE wind 25 kt. Seas 7 ft.

$$

PKZ765-290100-
North and West of Nunivak Island-
259 AM AKST Sat Dec 28 2024

...GALE WARNING SUNDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH SUNDAY...

.TODAY...E wind increasing to 30 kt. Seas in ice free waters 6 ft. 
Heavy freezing spray.
.TONIGHT...E wind 30 kt. Seas in ice free waters 7 ft. Extreme 
freezing spray at a rate of 4 cm per hour or greater may rapidly 
accumulate on vessels near the ice edge.
.SUN...E wind 35 kt. Seas in ice free waters 10 ft. Extreme freezing
spray at a rate of 4 cm per hour or greater may rapidly accumulate 
on vessels near the ice edge.
.SUN NIGHT...E wind 50 kt. Seas in ice free waters 18 ft.
.MON...E wind 45 kt. Seas in ice free waters 18 ft.
.TUE THROUGH WED...NE wind 20 kt. Seas in ice free waters 8 ft.

$$

PKZ767-290100-
Saint Matthew Island Waters-
259 AM AKST Sat Dec 28 2024

...GALE WARNING THROUGH SUNDAY...

.TODAY...E wind 30 kt E of Saint Matthew Island...E 40 kt W of
Saint Matthew Island. Seas 8 ft building to 13 ft in the afternoon. 
Freezing spray.
.TONIGHT...E wind 35 kt E of Saint Matthew Island...E 45 kt W of
Saint Matthew Island. Seas 19 ft. Widespread snow showers.
Freezing spray.
.SUN...E wind 40 kt. Seas 18 ft. Freezing spray.
.SUN NIGHT...E wind 45 kt. Seas 16 ft.
.MON...E wind 45 kt. Seas 21 ft.
.TUE...E wind 25 kt. Seas 14 ft.
.WED...NE wind 20 kt. Seas 8 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion...CORRECTED
National Weather Service Anchorage AK
653 AM AKST Fri Dec 27 2024

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

A return to seasonable weather with a few passing chances of
light snow are back underway across Southcentral Alaska. Satellite
imagery shows a well-defined, though low-amplitude, shortwave
trough gradually shifting eastward and lifting up through
Southcentral Alaska. Kenai Radar (PAHG) shows snow showers have
developed across portions of the Susitna Valley and Cook Inlet in
response to this wave. Light snow is expected to continue in this
area for much of the day, though snow rates / total snow
accumulation is expected to be limited without stronger upper-
level support. Farther south and east, precipitation in the
Northern Gulf / Prince William Sound area has been been focused
along a weak surface trough axis as it propagates westward. As it
does so, interaction with the aforementioned upper-level shortwave
may help enhance snowfall briefly later today across the Eastern
Turnagain Arm and western Chugach. Between these features, there's
a non-zero chance of some snowfall for Anchorage today. In fact,
latest model trends have ticked up ever so slightly, though any
accumulation should be minimal.

Farther east, webcams show Valdez up through and just north of
Thompson Pass continue to have snowfall. Another 1 to 2 inches for
the pass is likely by noon, with lesser accumulation for Valdez.
The Copper River Basin is likely to have snow as well, though
accumulation is likely minimal outside of the higher elevations
and up towards Isabel Pass, where snow is likely to persist
through the day with another inch or so of snowfall.

By this evening and through the overnight hours, another area of
low pressure drifting north through the Gulf of Alaska will renew
precipitation for much of the areas in the Prince William Sound
such as Valdez and Thompson Pass. Snow levels will be at or very
close to sea level in most locations with approximately 1 to 3
inches of snow forecast with this round.

Colder air will gradually filter into much of the area this
weekend. Cold high pressure building across the Copper River Basin
coincident with low in the Gulf of Alaska will result in
outflow/gap winds into the Prince William Sound to increase on
Sunday. Thompson Pass and/or any other locales with transportable
snow in these gaps and passes may experience times of drifting and
blowing snow. Otherwise, cooler and quiet weather is anticipated
for much of the area.

-Brown

&&

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

Northerly flow that has affected much of Southwest Alaska and the
Bering Sea continues to diminish in strength overall as the
pressure gradient within the flow lessens and the flow transitions
further southeast with a more continental source. This means that
while winds have diminished overall, precipitation has continued
to become more showery in nature, but that cold air will continue
to seep south into the southwest mainland, bringing high
temperatures near or just below zero to a a large swath of the
Kuskokwim Delta, from Kipnuk to Lime Village, into next week. Also
worth noting is the large swath of freezing spray that persists
across the Bering, with areas of heavy freezing spray and extreme
freezing spray within 50 miles of the ice edge in and around
Nunivak Island and the Kuskokwim Delta over the next several
days. The region of freezing spray focuses towards the Alaska
coastline by Sunday as northerly winds turn southerly as the next
system effects the Bering.

This next low moves north out of the North Pacific, bringing
southerly gale-force winds to the Western Aleutians as early as
today as the low propagates a front out ahead of it. Along the
southerly edge of this front, and just south of the Aleutian
Chain, a 965-975 low will try to form as it swings north and
across the Central Aleutians on Saturday. Model agreement has been
questionable and ensemble guidance hasn't offered much
assistance, but south to southeasterly winds of at least gale-
strength seems to be likely on Saturday for areas east of this
progged low, including much of the Central Aleutians. Further east
towards Unalaska, winds maintain some of gusty nature, but the
low diminishes in strength as it transitions north into the Bering
Saturday afternoon, beginning a Fujiwara dance with the parent
low and eventually becoming absorbed into a larger and more
disorganized Bering Sea low, while upper-level support wanes.
Easterly flow over the Southwest Mainland however, will lead to
clearing skies for the weekend and warming temperatures by the
beginning of next week.

By Sunday, the large low will cover the entirety of the Bering,
as shortwaves embedded within the flow propagate counter-
clockwise around it. This means gale-force winds will continue to
affect a majority of the Bering and the Aleutians. This pattern
will invite another low to form along the southern edge of an
elongated trough, that may again propagate north into the Bering,
this time across the Eastern Aleutian Chain / Southern AKPen. This
low looks to be a bit weaker at this time, though will continue
gale-force winds along the low's eastern edge, through Bristol Bay
and north along Alaska'a coast.

AB

&&

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

A broad upper level trough extending down from the Arctic and
into the central Gulf will remain entrenched until it starts to
break down Wednesday. The ridge will migrate north and westward. A
broad surface low over the Gulf will provide the opportunity for
coastal precipitation across Southcentral until Saturday evening
as the low weakens and moved up into central Alaska by Wednesday.
Conditions improve over the SouthCentral region through the middle
of the week. Over interior Southcentral and Southwest, a
considerable cool down in temperatures will take place as the
trough axis shifts eastward over the weekend, with lows dropping
below zero into early next week.

Behind the weakening ridge in the Bering is a front of a
Kamchatka low moving over the western Aleutians. The low center
will likely remain to the west of the forecast area, however model
guidance suggests the formation of a strong triple point low
forming in the North Pacific and moving over the Central Aleutians
late Sunday and into Monday afternoon. A core of gale-to-storm
force winds is possible near its center as it moves northward into
the western Bering. As this takes place, the trough axis
originating from the parent Kamchatka low will extend south and
east towards the North Pacific and western Gulf as the previously
mentioned Alaska/Canada ridge extends to the north and west over
mainland Alaska through the remainder of the extended forecast
period. Several surface lows will form along the trough axis
through the end of the period, though the placement and intensity
of them is still uncertain.

DD

&&

.AVIATION...

PANC...The Anchorage area will remain under the influence of weak
troughing through the TAF package. Low-level moisture and weak
flow at and near the surface will allow for low clouds and very
light snow to redevelop today. Much like yesterday, there may be
occasional breaks in both clouds and snowfall as these weak
upper-level waves move through then exit the region. Thus, while
the pattern overall will support redevelopment of occasional very
light snow, often with ceilings and visibility dropping to low
MVFR or IFR, there is low confidence on the exact timing of each
wave, each period of snow, and when current VFR ceilings and vis
reduce down to MVFR or IFR.

Much like the overnight hours, the redevelopment of a low stratus
deck and/or patchy fog is possible overnight tonight into early
Saturday morning. Very light snow and/or freezing drizzle is
possible from any low stratus deck developing overnight. However,
amount and type of precipitation is low confidence.

&&