Storm Warning 56, NWS Anchorage, AK

Issued

Mar 7, 2025, 2:37 AM AKST (11:37 UTC)

Expired

Mar 7, 2025, 3:30 PM AKST

In force

13 hr

Issued by

NWS Anchorage, AK

099 
FZAK52 PAFC 071137
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
237 AM AKST Fri Mar 7 2025

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.

PKZ199-080030-
237 AM AKST Fri Mar 7 2025
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 996 mb low 80nm west of Cape Newenham dissipates Fri afternoon. 
A 962 mb low 230 nm north of Shemya Sat morning moves 230 nm
northeast of Shemya Sun morning. Its front pushes across the 
Western and Central Aleutians by Sat afternoon.

$$

PKZ750-080030-
Sitkinak to Castle Cape out to 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH TONIGHT...

.TODAY...NW wind 30 kt. Seas 6 ft.
.TONIGHT...NW wind 30 kt. Seas 6 ft.
.SAT...NW wind 20 kt becoming S in the afternoon. Seas 5 ft.
.SAT NIGHT...SE wind 30 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 7 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 7 ft.

$$

PKZ751-080030-
Sitkinak to Castle Cape from 15 to 100 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NW wind 30 kt. Seas 13 ft.
.TONIGHT...NW wind 30 kt. Seas 12 ft.
.SAT...W wind 20 kt. Seas 10 ft.
.SAT NIGHT...S wind 30 kt. Seas 10 ft.
.SUN...W wind 30 kt. Seas 17 ft.
.MON THROUGH TUE...NW wind 35 kt. Seas 17 ft.

$$

PKZ752-080030-
Castle Cape to Cape Tolstoi out to 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NW wind 25 kt. Seas 5 ft.
.TONIGHT...NW wind 25 kt diminishing to 15 kt after midnight. 
Seas 5 ft.
.SAT...Variable wind 10 kt becoming SE 25 kt in the afternoon.
Seas 3 ft. Rain and snow.
.SAT NIGHT...SW wind 25 kt. Seas 6 ft.
.SUN THROUGH MON...W wind 25 kt. Seas 6 ft.
.TUE...W wind 30 kt. Seas 5 ft.

$$

PKZ753-080030-
Castle Cape to Cape Tolstoi from 15 to 100 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NW wind 30 kt. Seas 11 ft.
.TONIGHT...NW wind 30 kt. Seas 12 ft.
.SAT...SW wind 15 kt becoming S 30 kt in the afternoon. 
Seas 8 ft. Rain and snow.
.SAT NIGHT...SW wind 30 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 19 ft.
.MON THROUGH TUE...W wind 35 kt. Seas 18 ft.

$$

PKZ754-080030-
Cape Tolstoi to Cape Sarichef out to 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NW wind 30 kt. Seas 6 ft.
.TONIGHT...NW wind 25 kt becoming W 15 kt after midnight. Seas 5 ft.
.SAT...SE wind 30 kt. Seas 7 ft. Rain and snow.
.SAT NIGHT...W wind 30 kt. Seas 11 ft.
.SUN...SW wind 30 kt. Seas 13 ft.
.MON THROUGH TUE...W wind 35 kt. Seas 11 ft.

$$

PKZ755-080030-
Cape Tolstoi to Cape Sarichef from 15 to 100 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...NW wind 30 kt. Seas 12 ft.
.TONIGHT...NW wind 30 kt becoming W 20 kt after midnight. Seas 12 ft.
.SAT...S wind 30 kt. Seas 9 ft. Rain and snow.
.SAT NIGHT...W wind 30 kt. Seas 18 ft.
.SUN...W wind 35 kt. Seas 20 ft.
.MON THROUGH TUE...W wind 40 kt. Seas 19 ft.

$$

PKZ756-080030-
Port Heiden to Nelson Lagoon out to 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...W wind 20 kt. Seas 9 ft.
.TONIGHT...NW wind 20 kt. Seas 9 ft.
.SAT...S wind 15 kt becoming SE 30 kt in the afternoon. Seas 5 ft. Rain.
.SAT NIGHT...S wind 30 kt. Seas 6 ft.
.SUN...SW wind 25 kt. Seas 10 ft.
.MON THROUGH TUE...W wind 30 kt. Seas 12 ft.

$$

PKZ757-080030-
Port Heiden to Nelson Lagoon from 15 to 60 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TODAY...W wind 20 kt. Seas 10 ft.
.TONIGHT...NW wind 20 kt. Seas 9 ft.
.SAT...S wind 15 kt becoming SE 30 kt in the afternoon. Seas 6 ft. Rain.
.SAT NIGHT...S wind 30 kt. Seas 7 ft.
.SUN...SW wind 25 kt. Seas 13 ft.
.MON THROUGH TUE...W wind 30 kt. Seas 16 ft.

$$

PKZ758-080030-
Nelson Lagoon to Cape Sarichef out to 15 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING SATURDAY...

.TODAY...NW wind 25 kt. Seas 13 ft. Snow showers.
.TONIGHT...NW wind 20 kt in the evening becoming variable 10 kt.
Seas 11 ft.
.SAT...SE wind 25 kt increasing to 35 kt in the afternoon. 
Seas 6 ft. Rain with snow.
.SAT NIGHT...SW wind 30 kt. Seas 10 ft.
.SUN...SW wind 30 kt. Seas 16 ft.
.MON THROUGH TUE...W wind 35 kt. Seas 17 ft.

$$

PKZ759-080030-
Nelson Lagoon to Cape Sarichef from 15 to 70 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING SATURDAY...

.TODAY...NW wind 30 kt. Seas 14 ft. Freezing spray.
.TONIGHT...NW wind 20 kt in the evening becoming variable 10 kt.
Seas 11 ft.
.SAT...SE wind 30 kt increasing to 40 kt in the afternoon. Seas
9 ft. Rain and snow.
.SAT NIGHT...SW wind 30 kt. Seas 12 ft.
.SUN THROUGH TUE...W wind 35 kt. Seas 19 ft.

$$

PKZ770-080030-
Cape Sarichef to Nikolski Bering Side out to 15 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...NW wind 30 kt. Seas 14 ft.
.TONIGHT...W wind 20 kt becoming S 35 kt after midnight. 
Seas 11 ft. Snow and rain.
.SAT...SE wind 35 kt. Seas 9 ft. Rain and snow.
.SAT NIGHT...SW wind 35 kt. Seas 12 ft.
.SUN...SW wind 40 kt. Seas 18 ft.
.MON...W wind 45 kt. Seas 22 ft.
.TUE...SW wind 40 kt. Seas 19 ft.

$$

PKZ772-080030-
Cape Sarichef to Nikolski Bering Side from 15 to 85 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...NW wind 30 kt. Seas 16 ft.
.TONIGHT...W wind 20 kt becoming SE 35 kt after midnight. 
Seas 11 ft. Snow and rain.
.SAT...SE wind 40 kt. Seas 12 ft. Rain and snow.
.SAT NIGHT...SW wind 35 kt. Seas 16 ft.
.SUN...SW wind 40 kt. Seas 23 ft.
.MON THROUGH TUE...SW wind 45 kt. Seas 24 ft.

$$

PKZ771-080030-
Unalaska Bay-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY TODAY AND SATURDAY...

.TODAY...NW wind 30 kt. Gusts to 40 kt in the morning. 
Seas 14 ft. Snow showers.
.TONIGHT...W wind 20 kt becoming S after midnight. Seas 5 ft
subsiding to 3 ft after midnight. Snow.
.SAT...SE wind 25 kt. Seas 4 ft. Rain and snow.
.SAT NIGHT...W wind 25 kt. Seas 4 ft.
.SUN...SW wind 30 kt. Seas 5 ft.
.MON THROUGH TUE...SW wind 35 kt. Seas 5 ft.

$$

PKZ773-080030-
Cape Sarichef to Nikolski Pacific Side out to 15 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TODAY...

.TODAY...NW wind 35 kt. Seas 8 ft.
.TONIGHT...W wind 25 kt becoming S after midnight. Seas 6 ft. Snow
and rain.
.SAT...S wind 30 kt. Seas 10 ft building to 16 ft in the
afternoon.
Rain and snow.
.SAT NIGHT...W wind 35 kt. Seas 17 ft.
.SUN...SW wind 40 kt. Seas 17 ft.
.MON...W wind 45 kt. Seas 16 ft.
.TUE...SW wind 40 kt. Seas 12 ft.

$$

PKZ774-080030-
Cape Sarichef to Nikolski Pacific Side from 15 to 85 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING THROUGH SATURDAY...

.TODAY...NW wind 35 kt. Seas 12 ft.
.TONIGHT...S wind 35 kt. Seas 9 ft. Snow and rain.
.SAT...S wind 35 kt. Seas 11 ft building to 19 ft in the afternoon. Rain.
.SAT NIGHT...W wind 35 kt. Seas 20 ft.
.SUN...SW wind 40 kt. Seas 22 ft.
.MON THROUGH TUE...SW wind 45 kt. Seas 21 ft.

$$

PKZ775-080030-
Nikolski to Seguam Bering Side out to 15 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...NW wind 30 kt becoming W 20 kt in the afternoon. 
Seas 15 ft.
.TONIGHT...S wind 40 kt. Seas 11 ft. Rain and snow.
.SAT...SW wind 35 kt. Seas 15 ft. Rain.
.SAT NIGHT...SW wind 40 kt. Seas 18 ft.
.SUN...SW wind 40 kt. Seas 22 ft.
.MON...W wind 45 kt. Seas 21 ft.
.TUE...S wind 40 kt. Seas 18 ft.

$$

PKZ776-080030-
Nikolski to Seguam Bering Side from 15 to 85 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...NW wind 30 kt becoming W 20 kt in the afternoon. 
Seas 16 ft.
.TONIGHT...SE wind 45 kt. Seas 12 ft. Rain and snow.
.SAT...W wind 35 kt. Seas 14 ft. Rain.
.SAT NIGHT...SW wind 40 kt. Seas 20 ft.
.SUN THROUGH MON...W wind 45 kt. Seas 25 ft.
.TUE...S wind 40 kt. Seas 21 ft.

$$

PKZ777-080030-
Nikolski to Seguam Pacfic Side out to 15 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...NW wind 30 kt becoming W 20 kt in the afternoon. Seas 14 ft.
.TONIGHT...S wind 40 kt. Seas 12 ft. Rain and snow.
.SAT...SW wind 35 kt. Seas 20 ft. Rain.
.SAT NIGHT...SW wind 40 kt. Seas 21 ft.
.SUN...SW wind 40 kt. Seas 22 ft.
.MON...W wind 45 kt. Seas 21 ft.
.TUE...S wind 40 kt. Seas 16 ft.

$$

PKZ778-080030-
Nikolski to Seguam Pacific Side from 15 to 75 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TONIGHT AND SATURDAY...

.TODAY...NW wind 30 kt. Seas 16 ft.
.TONIGHT...S wind 40 kt. Seas 13 ft. Rain and snow.
.SAT...SW wind 40 kt. Seas 22 ft. Rain.
.SAT NIGHT...SW wind 40 kt. Seas 23 ft.
.SUN THROUGH MON...W wind 45 kt. Seas 25 ft.
.TUE...S wind 35 kt. Seas 20 ft.

$$

PKZ780-080030-
Seguam to Adak Bering Side out to 15 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING THROUGH SATURDAY...

.TODAY...W wind 20 kt becoming SE 40 kt in the afternoon. 
Seas 12 ft. Rain and snow.
.TONIGHT...SE wind 45 kt becoming S 30 kt after midnight. 
Seas 9 ft. Rain and snow.
.SAT...SW wind 35 kt. Seas 11 ft.
.SAT NIGHT...SW wind 40 kt. Seas 15 ft.
.SUN...SW wind 40 kt. Seas 20 ft.
.MON...SW wind 45 kt. Seas 20 ft.
.TUE...SE wind 30 kt. Seas 13 ft.

$$

PKZ781-080030-
Seguam to Adak Bering Side from 15 to 85 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING THROUGH SATURDAY...

.TODAY...W wind 20 kt becoming SE 40 kt in the afternoon. 
Seas 13 ft. Rain and snow.
.TONIGHT...SE wind 45 kt becoming S 35 kt after midnight. 
Seas 12 ft. Rain and snow.
.SAT...SW wind 30 kt increasing to 40 kt in the afternoon. 
Seas 14 ft. Rain.
.SAT NIGHT...SW wind 40 kt. Seas 21 ft.
.SUN THROUGH MON...SW wind 45 kt. Seas 26 ft.
.TUE...SE wind 30 kt. Seas 16 ft.

$$

PKZ782-080030-
Seguam to Adak Pacific Side out to 15 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING THROUGH SATURDAY...

.TODAY...W wind 20 kt becoming S 40 kt in the afternoon. 
Seas 8 ft. Rain and snow.
.TONIGHT...S wind 40 kt. Seas 17 ft. Rain and snow.
.SAT...SW wind 40 kt. Seas 21 ft.
.SAT NIGHT...SW wind 45 kt. Seas 24 ft.
.SUN THROUGH MON...SW wind 45 kt. Seas 23 ft.
.TUE...SE wind 25 kt. Seas 15 ft.

$$

PKZ783-080030-
Seguam to Adak Pacific Side from 15 to 75 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING THROUGH SATURDAY...

.TODAY...SW wind 20 kt becoming S 45 kt in the afternoon. 
Seas 10 ft. Rain and snow.
.TONIGHT...S wind 40 kt. Seas 15 ft building to 22 ft after midnight. Rain.
.SAT...SW wind 40 kt. Seas 22 ft.
.SAT NIGHT...SW wind 45 kt. Seas 27 ft.
.SUN THROUGH MON...SW wind 45 kt. Seas 26 ft.
.TUE...SE wind 30 kt. Seas 17 ft.

$$

PKZ784-080030-
Adak to Kiska Bering Side-
237 AM AKST Fri Mar 7 2025

...STORM WARNING TODAY...

.TODAY...SE wind 40 kt increasing to 50 kt in the afternoon. 
Seas 9 ft building to 16 ft in the afternoon. Rain and snow.
.TONIGHT...S wind 35 kt. Seas 15 ft. Rain.
.SAT...SW wind 45 kt. Seas 23 ft. Snow showers and rain showers.
.SAT NIGHT...SW wind 50 kt. Seas 28 ft.
.SUN...W wind 50 kt. Seas 31 ft.
.MON...SW wind 45 kt. Seas 24 ft.
.TUE...SE wind 25 kt. Seas 13 ft.

$$

PKZ785-080030-
Adak to Kiska Pacific Side-
237 AM AKST Fri Mar 7 2025

...STORM WARNING TODAY...

.TODAY...SE wind 50 kt. Seas 12 ft building to 17 ft in the
afternoon. Rain and snow.
.TONIGHT...SW wind 35 kt. Seas 19 ft. Rain.
.SAT...SW wind 45 kt. Seas 28 ft. Snow showers and rain showers.
.SAT NIGHT...SW wind 45 kt. Seas 30 ft.
.SUN...W wind 45 kt. Seas 31 ft.
.MON...SW wind 45 kt. Seas 25 ft.
.TUE...E wind 30 kt. Seas 15 ft.

$$

PKZ786-080030-
Kiska to Attu Bering Side-
237 AM AKST Fri Mar 7 2025

...STORM WARNING TODAY AND SATURDAY...

.TODAY...SE wind 55 kt. Seas 19 ft. Snow and rain.
.TONIGHT...S wind 40 kt. Seas 21 ft. Snow.
.SAT...SW wind 50 kt. Seas 26 ft. Snow showers and rain showers.
.SAT NIGHT...W wind 55 kt. Seas 30 ft.
.SUN...W wind 50 kt. Seas 27 ft.
.MON...SW wind 40 kt. Seas 21 ft.
.TUE...SE wind 25 kt. Seas 11 ft.

$$

PKZ787-080030-
Kiska to Attu Pacific Side-
237 AM AKST Fri Mar 7 2025

...STORM WARNING TODAY AND SATURDAY...

.TODAY...SE wind 50 kt becoming S 40 kt in the afternoon. Seas
19 ft. Rain and snow.
.TONIGHT...SW wind 45 kt. Seas 21 ft building to 28 ft after
midnight. Snow showers.
.SAT...SW wind 50 kt. Seas 30 ft. Snow showers and rain showers.
.SAT NIGHT...W wind 55 kt. Seas 32 ft.
.SUN...W wind 50 kt. Seas 32 ft.
.MON...SW wind 40 kt. Seas 24 ft.
.TUE...S wind 25 kt. Seas 12 ft.

$$

PKZ766-080030-
Pribilof Islands Nearshore Waters-
237 AM AKST Fri Mar 7 2025

...GALE WARNING SATURDAY...

.TODAY...NW wind 30 kt. Seas 13 ft. Freezing spray.
.TONIGHT...Variable wind 10 kt becoming SE 25 kt after midnight.
Seas 7 ft. Snow. Freezing spray.
.SAT...SE wind 45 kt. Seas 12 ft. Rain and snow.
.SAT NIGHT...SW wind 30 kt. Seas 14 ft.
.SUN THROUGH MON...SW wind 35 kt. Seas 23 ft.
.TUE...SW wind 30 kt. Seas 18 ft.

$$

PKZ760-080030-
Bristol Bay greater than 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...NW wind 10 kt increasing to 15 kt in the afternoon. Seas 5 ft.
.TONIGHT...NW wind 15 kt. Seas 6 ft.
.SAT...SW wind 10 kt becoming SE 25 kt in the afternoon. Seas 4 ft.
.SAT NIGHT...SE wind 35 kt. Seas 7 ft.
.SUN...SW wind 20 kt. Seas 8 ft.
.MON...W wind 25 kt. Seas 10 ft.
.TUE...NW wind 30 kt. Seas 13 ft.

$$

PKZ761-080030-
Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...NW wind 10 kt increasing to 15 kt in the afternoon. Seas 4 ft.
.TONIGHT...W wind 15 kt. Seas 4 ft.
.SAT...SW wind 10 kt becoming SE 25 kt in the afternoon. Seas 4 ft.
.SAT NIGHT...SE wind 30 kt. Seas 4 ft.
.SUN...SW wind 25 kt. Seas 6 ft.
.MON THROUGH TUE...NW wind 30 kt. Seas 9 ft.

$$

PKZ762-080030-
Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...N wind 10 kt becoming NW in the afternoon. Seas 3 ft.
.TONIGHT...NW wind 15 kt diminishing to 10 kt after midnight. Seas 3 ft.
.SAT...Variable wind less than 10 kt becoming SE 25 kt in the afternoon.
Seas 2 ft.
.SAT NIGHT...SE wind 35 kt. Seas 6 ft.
.SUN THROUGH MON...W wind 20 kt. Seas 6 ft.
.TUE...NW wind 20 kt. Seas 7 ft.

$$

PKZ763-080030-
Kuskokwim Delta and Etolin Strait out to 15 NM-
237 AM AKST Fri Mar 7 2025

...SMALL CRAFT ADVISORY SATURDAY...

.TODAY...NW wind 20 kt. Seas in ice free waters 2 ft.
.TONIGHT...NW wind 20 kt. Seas in ice free waters 2 ft.
.SAT...NE wind 15 kt becoming E 25 kt in the afternoon. 
Seas in ice free waters 2 ft.
.SAT NIGHT...SE wind 35 kt. Seas in ice free waters 2 ft.
.SUN THROUGH MON...S wind 20 kt. Seas in ice free waters 2 ft.
.TUE...NW wind 20 kt. Seas in ice free waters 1 foot.

$$

PKZ764-080030-
Kuskokwim Delta from 15 to 80 NM-
237 AM AKST Fri Mar 7 2025

...GALE WARNING SATURDAY...
...HEAVY FREEZING SPRAY WARNING TODAY...

.TODAY...NW wind 30 kt. Seas in ice free waters 7 ft. 
Heavy freezing spray along the ice edge.
.TONIGHT...NW wind 20 kt. Seas in ice free waters 6 ft.
.SAT...E wind 20 kt becoming SE 35 kt in the afternoon. 
Seas in ice free waters 7 ft. Snow. Freezing spray.
.SAT NIGHT...S wind 40 kt. Seas in ice free waters 10 ft.
.SUN THROUGH MON...SW wind 25 kt. Seas in ice free waters 13 ft.
.TUE...NW wind 25 kt. Seas in ice free waters 15 ft.

$$

PKZ765-080030-
North and West of Nunivak Island-
237 AM AKST Fri Mar 7 2025

...BRISK WIND ADVISORY TODAY AND SATURDAY...

.TODAY...N wind 30 kt.
.TONIGHT...N wind 15 kt.
.SAT...E wind 30 kt.
.SAT NIGHT...E wind 40 kt.
.SUN...S wind 25 kt.
.MON...SE wind 20 kt.
.TUE...NW wind 20 kt.

$$

PKZ767-080030-
Saint Matthew Island Waters-
237 AM AKST Fri Mar 7 2025

...GALE WARNING TONIGHT AND SATURDAY...
...HEAVY FREEZING SPRAY WARNING THROUGH SATURDAY...

.TODAY...N wind 30 kt diminishing to 20 kt in the afternoon. 
Seas in ice free waters 6 ft. Heavy freezing spray.
.TONIGHT...NE wind 20 kt E of Saint Matthew Island...E 35 kt W of
Saint Matthew Island. Seas in ice free waters 7 ft. Heavy freezing spray.
.SAT...E of Saint Matthew Island, E wind 30 kt increasing to 40 kt
in the afternoon. W of Saint Matthew Island, E wind 45 kt. Seas in
ice free waters 12 ft building to 18 ft in the afternoon. 
Snow showers. Heavy freezing spray.
.SAT NIGHT...E wind 45 kt. Seas in ice free waters 18 ft.
.SUN...E wind 30 kt. Seas in ice free waters 17 ft.
.MON...NW wind 30 kt. Seas in ice free waters 12 ft.
.TUE...N wind 20 kt. Seas in ice free waters 9 ft.

$$

NWS Anchorage, AK wrote its last area forecast discussion before this storm warning went out at Mar 6, 5:25 PM AKST, 9 hours 12 minutes earlier.

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
525 PM AKST Thu Mar 6 2025

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

Through Sunday afternoon, generally expect unsettled weather
along the coast, with much quieter weather further inland.
Weatherwise, isolated to scattered showers linger this evening.
Then, by late tonight into early tomorrow morning, a low in the
Gulf pushes its front into Southcentral Alaska. The low will
linger in the Gulf through Saturday, then exit eastward as a front
and developing triple point low slide in from the Bering Sea.
Forecast confidence is moderate to high, with the lowest
confidence for marine-area forecasts with Friday's low. No
impactful hazards are anticipated at this time.

Diving into the details... clear skies today have led to
temperatures climbing into the 40s this afternoon. Middleton
Island radar shows isolated to scattered showers continuing to
move in along the north Gulf coast, though the latest returns show
a shift from southwesterly to southeasterly steering flow as the
atmosphere responds to a low moving into the Gulf. This low has
been the main source of forecast uncertainty; model guidance
continues to show poor consistency and poor agreement regarding
its track, leading to lower forecast confidence regarding wind
direction/speed and precipitation amounts/timing. Have gone with
a more northerly low track for this forecast package, though the
forecast on land isn't particularly sensitive to the low track
since the low itself remains offshore. Marine forecasts will be
much more sensitive to shifts in the low track, so mariners
should stay tuned to the forecast for tonight and tomorrow.

In addition to the low track, another aspect of uncertainty will
be with temperatures. Temperatures today were a bit higher than
forecast, thanks to the increasing daylight as we approach spring.
Temperatures through Saturday will likely be influenced most by
diurnal effects rather than air mass changes; this means that
confidence in surface temperatures forecast may be a bit lower as
these diurnal effects can be difficult for models to accurately
represent. Where this comes into play will be for precipitation
type forecasts along the coast, especially for Whittier.
Currently, our forecast calls for about 2 inches of snow in the
Whittier area Friday night into Saturday morning as temperatures
linger in the mid-30s. If temperatures are lower, there could be
greater snow accumulation. Overall, this likely won't have a big
impact, but it might be something to note for snow-lovers keeping
a close eye on the forecast.

-Chen

&&

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

As of this afternoon, there are a couple of features to note in
the Southwest. First, what is left of the stalled low affecting
Nunivak Island and the YK Delta is centered west of Nunivak and is
sending scattered snow showers to the Bethel area, with flurries
also lingering along the coast. There is still some degree of
blowing snow happening over Nunivak Island, but that should wind
down as northerly winds somewhat relax as the low begins to drift
southward and weaken considerably this evening. We still have
quite the pressure gradient over the Pribilofs, which is
continuing blowing snow across the islands. Farther west, a ridge
of high pressure has situated itself across the Western Aleutians.

Going forward into midday Friday, guidance shows the
aforementioned low continuing its trek southward, bringing with it
a broad and colder airmass across the Bering and into the central
Aleutians, AK Pen, and coastal Southwest as the ridge out west is
pushed quickly eastward across the Central Aleutians. By this
time, blowing snow should come to an end for the Pribilof Islands
as the pressure gradient weakens. A gale-force low with widespread
storm force wind gusts and gales quickly chases out the ridge
into the Eastern Aleutians and AK Pen by Friday night, as the
low's front steamrolls across the Central and Western Aleutians.
This setup becomes tricky as temperatures are cold enough to
initially support moderate to heavy snowfall and blowing snow,
which could warrant advisory products for the Central and Western
Aleutians. However, south of the triple point will be a sector of
relatively warm air of 40-45F, which will transition snow to rain
for these areas. Timing of the transition will be ironed out as
more guidance comes in, but as of now operational models show the
changeover hitting Adak late Friday afternoon, then quickly moving
eastward over Dutch Harbor by Saturday morning, and continuing
its march eastbound. As the whole system shifts eastward late
Saturday, blowing snow or blizzard conditions yet again look
likely for the Pribilofs. The hope is some of the strong
southeasterly flow will usher in some warmer air to limit pre-
frontal blowing snow potential, but blizzard conditions and a
period of heavy snowfall of 2-4" still look possible with winds in
the 50kt ballpark as precipitation moves in and the event
unfolds. We have above average confidence in impacts to the
Pribilof islands, which has prompted us to issue a Winter Storm
Watch from Friday night lasting until Saturday afternoon. Strong
southeast gales at the same time will stretch southward across the
Central and Eastern Aleutians.

By Sunday morning, the front, precipitation, and warm sector
reaches the AK Pen and Southwest coastline where we will similarly
see strong winds, moderate snowfall, and the snow changing to
rain from west to east. Some marginally colder air at the surface
and much colder air aloft attempts to wrap in the wake of this
frontal system, which could change lingering light precipitation
across the Aleutian chain back over to snow. Models do show
another round of gale force winds behind the front with strong
cold air advection across the southern Bering. Conditions for the
Pribilofs look to improve by this time frame as well. Apart from
that, the upper level and surface flow looks fairly zonal for the
rest of the short term.

-AM

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

An extensive upper level trough stretching from the Russian Far
East across the Bering continues its Eastward push over Interior
Alaska into Northern Canada through the forecast period. A low
center separates from this trough at the Alaska Peninsula and
moves across the Gulf of Alaska before exiting to the Southeast
for Wednesday. A weak ridge moving over the Aleutians flattens out
by Thursday. An ECMWF / GFS and Canadian blended cluster
continues to handle features consistently well through the period.
Greatest uncertainty rests with the smaller details supported by
shortwaves rotating through the pattern.

A well developed surface low and front over the Central Bering
weakens and dissipates as it approaches Western Alaska by Tuesday.
Widespread snow and gale force winds over the Bering subsides by
late Tuesday. Meanwhile a low that formed on the front near Kodiak
Island pushes snow over the inland areas of Southcentral Alaska,
the Alaska Peninsula into Southwest Alaska, and areas of rain
along the coastal zones in Southcentral and over the Gulf,
diminishing late Tuesday. A strong North Pacific low and front
bears down on the Western and Central Aleutians late Tuesday
through Thursday. Locally heavy rains and gale force winds move
over the Aleutians, diminishing Thursday.

- Kutz

&&

.AVIATION...

PANC...VFR will prevail through the TAF period in wake of a frontal
system. Winds will become northerly this evening, becoming gusty
overnight before abating on Friday.

&&

Storm Warnings in Alaska, 2025Every storm warning in 2025

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.