Gale Warning 430, NWS Anchorage, AK

236 
FZAK52 PAFC 022240
CWFALU

Coastal Waters Forecast
National Weather Service Anchorage Alaska
240 PM AKDT Thu May 2 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.

PKZ199-031145-
240 PM AKDT Thu May 2 2024
.SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA
PENINSULA WATERS AND THE ALEUTIAN ISLANDS...

A 973 mb low 90 nm South of Attu moves into Bristol Bay at 989 mb
for Sat afternoon. Its front pushes over the Aleutians and Alaska
Peninsula into the Gulf of Alaska and trails across the Southern 
Bering to a 1010 mb North Pacific low through Sat afternoon. 

$$

PKZ750-031145-
Sitkinak to Castle Cape out to 15 NM-
240 PM AKDT Thu May 2 2024

.TONIGHT...N wind 15 kt becoming E after midnight. Seas 4 ft.
.FRI...SE wind 20 kt. Seas 4 ft. Rain.
.FRI NIGHT...S wind 20 kt. Seas 6 ft. Rain.
.SAT...SW wind 20 kt. Seas 6 ft.
.SAT NIGHT...W wind 15 kt. Seas 6 ft.
.SUN THROUGH MON...NW wind 30 kt. Seas 8 ft.
.TUE...SW wind 20 kt. Seas 8 ft.

$$

PKZ751-031145-
Sitkinak to Castle Cape from 15 to 100 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...NW wind 15 kt. Seas 7 ft.
.FRI...S wind 25 kt. Seas 8 ft.
.FRI NIGHT...SW wind 25 kt. Seas 10 ft.
.SAT...SW wind 25 kt. Seas 13 ft.
.SAT NIGHT...W wind 30 kt. Seas 15 ft.
.SUN...NW wind 30 kt. Seas 14 ft.
.MON...W wind 25 kt. Seas 11 ft.
.TUE...SW wind 25 kt. Seas 9 ft.

$$

PKZ752-031145-
Castle Cape to Cape Tolstoi out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...Variable wind 10 kt becoming SE 20 kt after midnight.
Seas 3 ft.
.FRI...SE wind 25 kt. Seas 5 ft. Rain and snow.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...SW wind 20 kt. Seas 6 ft.
.SAT NIGHT...W wind 20 kt. Seas 6 ft.
.SUN...NW wind 25 kt. Seas 5 ft.
.MON...W wind 15 kt. Seas 3 ft.
.TUE...S wind 15 kt. Seas 7 ft.

$$

PKZ753-031145-
Castle Cape to Cape Tolstoi from 15 to 100 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY AND FRIDAY NIGHT...

.TONIGHT...Variable wind 10 kt becoming S 20 kt after midnight.
Seas 7 ft.
.FRI...SE wind 30 kt. Seas 9 ft. Rain.
.FRI NIGHT...SW wind 25 kt. Seas 12 ft.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 18 ft.
.SUN...W wind 30 kt. Seas 15 ft.
.MON...W wind 25 kt. Seas 9 ft.
.TUE...S wind 20 kt. Seas 9 ft.

$$

PKZ754-031145-
Cape Tolstoi to Cape Sarichef out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...SE wind 15 kt increasing to 25 kt after midnight. Seas
5 ft. Rain and snow.
.FRI...SE wind 25 kt becoming SW in the afternoon. Seas 7 ft. Rain 
and snow.
.FRI NIGHT...SW wind 25 kt. Seas 10 ft. Rain showers.
.SAT AND SAT NIGHT...W wind 25 kt. Seas 11 ft.
.SUN...W wind 25 kt. Seas 7 ft.
.MON...Variable wind 10 kt. Seas 5 ft.
.TUE...SE wind 20 kt. Seas 5 ft.

$$

PKZ755-031145-
Cape Tolstoi to Cape Sarichef from 15 to 100 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 15 kt becoming SE 30 kt after midnight. Seas 8
ft. Rain and snow.
.FRI...S wind 30 kt. Seas 11 ft.
.FRI NIGHT...SW wind 30 kt. Seas 14 ft. Rain showers.
.SAT...SW wind 35 kt. Seas 20 ft.
.SAT NIGHT...W wind 30 kt. Seas 18 ft.
.SUN...W wind 30 kt. Seas 15 ft.
.MON...W wind 20 kt. Seas 7 ft.
.TUE...S wind 20 kt. Seas 9 ft.

$$

PKZ756-031145-
Port Heiden to Nelson Lagoon out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...Variable wind 10 kt becoming SE 20 kt after midnight.
Seas 3 ft.
.FRI...SE wind 25 kt. Seas 3 ft. Rain and snow.
.FRI NIGHT...SW wind 20 kt. Seas 3 ft.
.SAT...SW wind 15 kt. Seas 4 ft.
.SAT NIGHT...W wind 20 kt. Seas 4 ft.
.SUN...W wind 25 kt. Seas 7 ft.
.MON...W wind 20 kt. Seas 5 ft.
.TUE...SE wind 20 kt. Seas 3 ft.

$$

PKZ757-031145-
Port Heiden to Nelson Lagoon from 15 to 60 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...Variable wind 10 kt becoming E 20 kt after midnight.
Seas 4 ft.
.FRI...E wind 25 kt. Seas 5 ft. Rain and snow.
.FRI NIGHT...SW wind 20 kt. Seas 5 ft.
.SAT...SW wind 15 kt. Seas 5 ft.
.SAT NIGHT...NW wind 20 kt. Seas 6 ft.
.SUN...W wind 25 kt. Seas 9 ft.
.MON...W wind 20 kt. Seas 7 ft.
.TUE...SE wind 20 kt. Seas 6 ft.

$$

PKZ758-031145-
Nelson Lagoon to Cape Sarichef out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...SE wind 25 kt. Seas 4 ft. Rain and snow.
.FRI...SE wind 25 kt becoming SW in the afternoon. Seas 5 ft. Rain 
and snow.
.FRI NIGHT...S wind 20 kt. Seas 5 ft.
.SAT AND SAT NIGHT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 9 ft.
.MON...W wind 15 kt. Seas 5 ft.
.TUE...SE wind 20 kt. Seas 5 ft.

$$

PKZ759-031145-
Nelson Lagoon to Cape Sarichef from 15 to 70 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY...

.TONIGHT...SE wind 25 kt. Seas 5 ft. Rain and snow.
.FRI...SE wind 25 kt becoming SW in the afternoon. Seas 6 ft. Rain
and snow.
.FRI NIGHT...SW wind 20 kt. Seas 7 ft. Widespread rain and snow
showers.
.SAT...W wind 20 kt. Seas 8 ft.
.SAT NIGHT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 25 kt. Seas 9 ft.
.MON...SW wind 15 kt. Seas 6 ft.
.TUE...SE wind 20 kt. Seas 6 ft.

$$

PKZ770-031145-
Cape Sarichef to Nikolski Bering Side out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...SE wind 30 kt. Seas 5 ft. Rain and snow.
.FRI...SW wind 25 kt. Seas 6 ft.
.FRI NIGHT...SW wind 30 kt. Seas 9 ft. Widespread rain showers.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 10 ft.
.SUN...W wind 25 kt. Seas 9 ft.
.MON...S wind 20 kt. Seas 5 ft.
.TUE...S wind 25 kt. Seas 8 ft.

$$

PKZ772-031145-
Cape Sarichef to Nikolski Bering Side from 15 to 85 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...SE wind 30 kt. Seas 7 ft. Rain and snow.
.FRI...SW wind 25 kt. Seas 8 ft.
.FRI NIGHT...SW wind 30 kt. Seas 11 ft. Widespread rain showers.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 12 ft.
.SUN...W wind 25 kt. Seas 10 ft.
.MON...S wind 15 kt. Seas 6 ft.
.TUE...SE wind 20 kt. Seas 8 ft.

$$

PKZ771-031145-
Unalaska Bay-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY TONIGHT...

.TONIGHT...SE wind increasing to 25 kt. Seas 4 ft. Rain and snow.
.FRI...W wind 15 kt. Seas 2 ft. Rain showers.
.FRI NIGHT...SW wind 15 kt. Seas 2 ft. Widespread rain and snow
showers.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 5 ft.
.SUN...W wind 25 kt. Seas 4 ft.
.MON...S wind 10 kt. Seas 2 ft.
.TUE...SE wind 15 kt. Seas 2 ft.

$$

PKZ773-031145-
Cape Sarichef to Nikolski Pacific Side out to 15 NM-
240 PM AKDT Thu May 2 2024

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...SE wind 25 kt. Seas 8 ft. Rain and snow.
.FRI...SW wind 25 kt. Seas 11 ft.
.FRI NIGHT...SW wind 35 kt. Seas 16 ft. Rain showers.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 14 ft.
.SUN...W wind 30 kt. Seas 9 ft.
.MON...S wind 20 kt. Seas 5 ft.
.TUE...S wind 25 kt. Seas 6 ft.

$$

PKZ774-031145-
Cape Sarichef to Nikolski Pacific Side from 15 to 85 NM-
240 PM AKDT Thu May 2 2024

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...S wind 30 kt. Seas 9 ft. Rain.
.FRI...SW wind 30 kt. Seas 13 ft.
.FRI NIGHT...SW wind 35 kt. Seas 20 ft. Rain showers.
.SAT...W wind 35 kt. Seas 21 ft.
.SAT NIGHT...W wind 30 kt. Seas 18 ft.
.SUN...W wind 30 kt. Seas 13 ft.
.MON...SW wind 20 kt. Seas 6 ft.
.TUE...S wind 25 kt. Seas 8 ft.

$$

PKZ775-031145-
Nikolski to Seguam Bering Side out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 30 kt. Seas 7 ft. Rain.
.FRI...SW wind 30 kt. Seas 12 ft.
.FRI NIGHT...SW wind 30 kt. Seas 14 ft. Rain showers.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 12 ft.
.SUN...W wind 20 kt. Seas 9 ft.
.MON...S wind 20 kt. Seas 5 ft.
.TUE...SW wind 25 kt. Seas 10 ft.

$$

PKZ776-031145-
Nikolski to Seguam Bering Side from 15 to 85 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 30 kt becoming SW 20 kt after midnight. Seas 7
ft. Rain.
.FRI...SW wind 30 kt. Seas 10 ft. Rain showers.
.FRI NIGHT...SW wind 30 kt. Seas 13 ft. Rain showers.
.SAT AND SAT NIGHT...W wind 30 kt. Seas 12 ft.
.SUN...W wind 20 kt. Seas 9 ft.
.MON...S wind 20 kt. Seas 6 ft.
.TUE...SW wind 25 kt. Seas 10 ft.

$$

PKZ777-031145-
Nikolski to Seguam Pacfic Side out to 15 NM-
240 PM AKDT Thu May 2 2024

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...S wind 25 kt. Seas 8 ft. Rain.
.FRI...SW wind 30 kt. Seas 15 ft.
.FRI NIGHT...SW wind 35 kt. Seas 18 ft. Rain showers.
.SAT...W wind 30 kt. Seas 17 ft.
.SAT NIGHT...W wind 30 kt. Seas 13 ft.
.SUN...W wind 25 kt. Seas 9 ft.
.MON...S wind 20 kt. Seas 5 ft.
.TUE...SW wind 25 kt. Seas 9 ft.

$$

PKZ778-031145-
Nikolski to Seguam Pacific Side from 15 to 75 NM-
240 PM AKDT Thu May 2 2024

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...SW wind 25 kt. Seas 10 ft. Rain.
.FRI...SW wind 30 kt. Seas 18 ft.
.FRI NIGHT...SW wind 35 kt. Seas 22 ft.
.SAT...W wind 35 kt. Seas 20 ft.
.SAT NIGHT...W wind 30 kt. Seas 16 ft.
.SUN...W wind 25 kt. Seas 11 ft.
.MON...S wind 20 kt. Seas 6 ft.
.TUE...SW wind 30 kt. Seas 10 ft.

$$

PKZ780-031145-
Seguam to Adak Bering Side out to 15 NM-
240 PM AKDT Thu May 2 2024

...GALE WARNING FRIDAY NIGHT...

.TONIGHT...SW wind 20 kt increasing to 30 kt after midnight. Seas
6 ft.
.FRI...SW wind 30 kt. Seas 8 ft. Rain showers.
.FRI NIGHT...W wind 35 kt. Seas 10 ft.
.SAT...W wind 30 kt. Seas 9 ft.
.SAT NIGHT...W wind 25 kt. Seas 8 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.MON...S wind 15 kt. Seas 4 ft.
.TUE...W wind 30 kt. Seas 9 ft.

$$

PKZ781-031145-
Seguam to Adak Bering Side from 15 to 85 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 25 kt. Seas 7 ft.
.FRI...SW wind 30 kt. Seas 10 ft. Rain showers.
.FRI NIGHT...W wind 30 kt. Seas 10 ft.
.SAT...W wind 30 kt. Seas 10 ft.
.SAT NIGHT...W wind 25 kt. Seas 9 ft.
.SUN...W wind 20 kt. Seas 8 ft.
.MON...S wind 15 kt. Seas 4 ft.
.TUE...W wind 30 kt. Seas 9 ft.

$$

PKZ782-031145-
Seguam to Adak Pacific Side out to 15 NM-
240 PM AKDT Thu May 2 2024

...GALE WARNING FRIDAY AND FRIDAY NIGHT...

.TONIGHT...SW wind 20 kt increasing to 30 kt after midnight. Seas
12 ft.
.FRI...SW wind 35 kt. Seas 19 ft. Rain showers.
.FRI NIGHT...W wind 35 kt. Seas 19 ft.
.SAT...W wind 30 kt. Seas 15 ft.
.SAT NIGHT...W wind 25 kt. Seas 10 ft.
.SUN...W wind 20 kt. Seas 7 ft.
.MON...S wind 20 kt. Seas 5 ft.
.TUE...W wind 30 kt. Seas 6 ft.

$$

PKZ783-031145-
Seguam to Adak Pacific Side from 15 to 75 NM-
240 PM AKDT Thu May 2 2024

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...SW wind 25 kt increasing to 35 kt after midnight. Seas
15 ft. Rain.
.FRI...SW wind 35 kt. Seas 21 ft.
.FRI NIGHT...W wind 35 kt. Seas 22 ft.
.SAT...W wind 35 kt. Seas 18 ft.
.SAT NIGHT...W wind 25 kt. Seas 12 ft.
.SUN...SW wind 20 kt. Seas 8 ft.
.MON...S wind 20 kt. Seas 6 ft.
.TUE...W wind 30 kt. Seas 8 ft.

$$

PKZ784-031145-
Adak to Kiska Bering Side-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 30 kt. Seas 12 ft. Widespread rain and snow
showers.
.FRI...W wind 30 kt. Seas 12 ft.
.FRI NIGHT...W wind 30 kt. Seas 10 ft.
.SAT...W wind 25 kt. Seas 9 ft.
.SAT NIGHT...W wind 20 kt. Seas 8 ft.
.SUN...SW wind 15 kt. Seas 7 ft.
.MON...SE wind 15 kt. Seas 6 ft.
.TUE...W wind 30 kt. Seas 9 ft.

$$

PKZ785-031145-
Adak to Kiska Pacific Side-
240 PM AKDT Thu May 2 2024

...GALE WARNING THROUGH FRIDAY NIGHT...

.TONIGHT...S wind 35 kt. Seas 20 ft. Widespread rain and snow
showers.
.FRI...W wind 35 kt. Seas 20 ft.
.FRI NIGHT...W wind 35 kt. Seas 18 ft.
.SAT...W wind 30 kt. Seas 14 ft.
.SAT NIGHT...W wind 20 kt. Seas 8 ft.
.SUN...S wind 15 kt. Seas 6 ft.
.MON...S wind 20 kt. Seas 6 ft.
.TUE...W wind 30 kt. Seas 8 ft.

$$

PKZ786-031145-
Kiska to Attu Bering Side-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...SE wind 25 kt becoming N after midnight. Seas 15 ft.
.FRI...NW wind 25 kt. Seas 13 ft.
.FRI NIGHT...NW wind 25 kt. Seas 11 ft.
.SAT...NW wind 20 kt. Seas 9 ft.
.SAT NIGHT...NW wind 15 kt. Seas 8 ft.
.SUN...NE wind 15 kt. Seas 7 ft.
.MON...N wind 25 kt. Seas 6 ft.
.TUE...W wind 25 kt. Seas 7 ft.

$$

PKZ787-031145-
Kiska to Attu Pacific Side-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...W wind 30 kt. Seas 19 ft.
.FRI...NW wind 30 kt. Seas 16 ft.
.FRI NIGHT...NW wind 30 kt. Seas 13 ft.
.SAT...W wind 20 kt. Seas 10 ft.
.SAT NIGHT...SW wind 15 kt. Seas 8 ft.
.SUN...E wind 15 kt. Seas 6 ft.
.MON...N wind 25 kt. Seas 6 ft.
.TUE...W wind 25 kt. Seas 7 ft.

$$

PKZ766-031145-
Pribilof Islands Nearshore Waters-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

.TONIGHT...E wind increasing to 25 kt. Seas 7 ft. Snow and rain.
.FRI...E wind 25 kt becoming S 15 kt in the afternoon. Seas 7 ft.
Snow.
.FRI NIGHT...Variable wind 10 kt. Seas 8 ft. Snow showers and rain
showers.
.SAT AND SAT NIGHT...NW wind 25 kt. Seas 9 ft.
.SUN...W wind 25 kt. Seas 8 ft.
.MON...S wind 15 kt. Seas 5 ft.
.TUE...NE wind 20 kt. Seas 5 ft.

$$

PKZ760-031145-
Bristol Bay greater than 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...Variable wind less than 10 kt becoming E 15 kt after
midnight. Seas 2 ft.
.FRI...E wind 25 kt. Seas 4 ft. Rain.
.FRI NIGHT...S wind 20 kt diminishing to 10 kt after midnight.
Seas 3 ft. Rain.
.SAT...SE wind 10 kt. Seas 3 ft.
.SAT NIGHT...W wind 15 kt. Seas 5 ft.
.SUN...W wind 30 kt. Seas 9 ft.
.MON...W wind 25 kt. Seas 7 ft.
.TUE...SE wind 20 kt. Seas 7 ft.

$$

PKZ761-031145-
Bristol Bay from Port Heiden to Cape Chichagof out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...Variable wind less than 10 kt becoming E 15 kt after
midnight. Seas 1 foot.
.FRI...SE wind 25 kt. Seas 2 ft. Rain.
.FRI NIGHT...S wind 15 kt diminishing to 10 kt after midnight.
Seas 1 foot. Rain.
.SAT...S wind 10 kt. Seas 1 foot.
.SAT NIGHT...W wind 15 kt. Seas 3 ft.
.SUN...W wind 30 kt. Seas 7 ft.
.MON...W wind 25 kt. Seas 6 ft.
.TUE...SE wind 20 kt. Seas 4 ft.

$$

PKZ762-031145-
Bristol Bay from Cape Chichagof to Cape Pierce out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...Variable wind less than 10 kt becoming E 15 kt after
midnight. Seas 2 ft.
.FRI...E wind 25 kt. Seas 3 ft. Rain.
.FRI NIGHT...SE wind 20 kt becoming S 10 kt after midnight. Seas
2 ft. Rain and snow.
.SAT...SE wind 10 kt. Seas 2 ft.
.SAT NIGHT...NW wind 15 kt. Seas 3 ft.
.SUN THROUGH MON...W wind 25 kt. Seas 5 ft.
.TUE...SE wind 20 kt. Seas 6 ft.

$$

PKZ763-031145-
Kuskokwim Delta and Etolin Strait out to 15 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...E wind 10 kt increasing to 15 kt after midnight. Seas
in ice free waters 2 foot.
.FRI...E wind 25 kt. Seas in ice free waters 3 ft. Rain and snow.
.FRI NIGHT...E wind 20 kt. Seas in ice free waters 3 ft. Rain and
snow.
.SAT...E wind 10 kt. Seas in ice free waters 1 foot.
.SAT NIGHT...NW wind 20 kt. Seas in ice free waters 2 ft.
.SUN...NW wind 25 kt. Seas in ice free waters 2 ft.
.MON...SW wind 15 kt. Seas in ice free waters 3 ft.
.TUE...E wind 20 kt. Seas in ice free waters 3 ft.

$$

PKZ764-031145-
Kuskokwim Delta from 15 to 80 NM-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY...

.TONIGHT...E wind 10 kt increasing to 20 kt after midnight. Seas
3 ft.
.FRI...E wind 25 kt. Seas 6 ft. Snow and rain.
.FRI NIGHT...SE wind 20 kt. Seas 6 ft. Snow and rain showers.
.SAT...E wind 10 kt. Seas 5 ft.
.SAT NIGHT...NW wind 25 kt. Seas 5 ft.
.SUN...NW wind 25 kt. Seas 7 ft.
.MON...SW wind 20 kt. Seas 5 ft.
.TUE...E wind 20 kt. Seas 7 ft.

$$

PKZ765-031145-
North and West of Nunivak Island-
240 PM AKDT Thu May 2 2024

...SMALL CRAFT ADVISORY FRIDAY NIGHT...

.TONIGHT...NE wind 20 kt. Seas in ice free waters 2 ft.
.FRI...E wind 20 kt. Seas in ice free waters 3 ft. Rain.
.FRI NIGHT...NE wind 25 kt. Seas in ice free waters 4 ft. Rain
with snow.
.SAT AND SAT NIGHT...N wind 25 kt. Seas in ice free waters 5 ft.
.SUN...NW wind 25 kt. Seas in ice free waters 5 ft.
.MON...SE wind 15 kt. Seas in ice free waters 4 ft.
.TUE...E wind 20 kt. Seas in ice free waters 4 ft.

$$

PKZ767-031145-
Saint Matthew Island Waters-
240 PM AKDT Thu May 2 2024

...GALE WARNING FRIDAY...

.TONIGHT...NE wind 25 kt E of Saint Matthew Island...E 30 kt W of
Saint Matthew Island. Seas in ice free waters 9 ft.
.FRI...E wind 25 kt E of Saint Matthew Island...NE 35 kt W of
Saint Matthew Island. Seas in ice free waters 10 ft. Snow.
.FRI NIGHT...NE wind 30 kt. Seas in ice free waters 11 ft. Snow.
.SAT...N wind 30 kt. Seas in ice free waters 10 ft.
.SAT NIGHT...N wind 25 kt. Seas in ice free waters 7 ft.
.SUN...NW wind 25 kt. Seas in ice free waters 6 ft.
.MON THROUGH TUE...NE wind 20 kt. Seas in ice free waters 5 ft.

$$

Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
350 PM AKDT Wed May 1 2024

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

Cloudy conditions will continue across Southcentral through the
end of the week and into this weekend as weak shortwaves move
through. A low exits the Bering Sea and moves into the southern
Gulf of Alaska on Thursday and its associated front pulls
moisture right towards Kodiak, eastern Kenai Peninsula, and
western Prince William Sound. The bulk of the precipitation will
be in the aforementioned areas for Thursday and Friday before
spreading eastward to include Cordova and Valdez by late Friday
night. The next system is taking a more southerly track and moving
a bit slower than shown in previous model runs that will delay
rainfall to Valdez and Cordova until at least late Friday night.
Additionally, easterly flow near Seward will help keep rain
lighter with lower amounts expected. Rain will be near continuous
for Kodiak Island through much of Thursday. Rainfall amounts in
Kodiak City should be around an inch to inch and a half, with
higher amounts in the mountains. Downsloping easterly flow will
keep the west side of the Peninsula and Anchorage largely dry.
Showery activity is possible today in portions of the Susitna
Valley and Copper River Basin but should remain light and brief.

&&

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3: Today
through Friday night)...

A rapidly weakening low pressure system in the southeastern
Bering Sea continues to push a fairly weak frontal boundary into
Southwest Alaska this evening. Areas of light showers will persist
for the Bristol Bay region tonight before coming to an end
Thursday morning, as the parent low is absorbed by a stronger
incoming trough entering the western Bering tonight.

To the west, a new low pressure system is set to begin moving
over the western Aleutians by early this evening. The low will be
preluded by a front on the eastern leading edge. The front will
push quickly across the western-most Aleutians, reaching Adak by
late tonight/early Thursday morning. Initially, gale-force
southeasterly winds with light-to-moderate rainfall are expected
to be produced along the front, gradually weakening to sub-gale
and light rainfall by the time the front reaches Atka. By Thursday
afternoon, the front will have reached Nikolski, and the parent
low-pressure system will be entering the western Aleutians,
bringing another round of rainfall. The front and low will
continue advancing steadily across the Chain until the front
reaches Southwest Alaska by early Friday afternoon. Notably, as
the front crosses the Pribilof Islands late Thursday night/early
Friday morning, there is the chance for some of the early precipitation
to come down as a wet snow or a rain/snow mix. This is expected
to be brief, and accumulated snowfall would likely melt by Friday
afternoon. However, up to 2 inches of this wet snow is possible
before shifting to rainfall.

-CL

&&

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

Active, but not overly impactful weather, is expected for the
long term forecast. Generally, expect widespread precipitation
for the Southern Mainland as an occluding low dissipates in the
northern Gulf. An upper low moving from the Arctic into the Bering
Sea will bring a cool down for Southwest Alaska early next week.
By the latter half of Monday, this upper low phases with another
low in the North Pacific, strengthening it as it moves towards the
Southern Mainland through midweek. However, model agreement
diminishes considerably around Monday, leading to lower confidence
in the evolution of this system.

Diving into the details... Sunday begins with a broad longwave trough
extending across much of Alaska. A vertically stacked low over
Southwest Alaska will gradually move into the northern Gulf
through Sunday. The low's front will bring steady rain along the
north Gulf coast, with inland areas in Southwest and Southcentral
staying much drier due to downsloping. Instead, these inland
locations will likely see widespread showers due to robust
vorticity associated with this upper low, with the potential for
stronger convection Sunday afternoon and evening as an easterly
shortwave transits the Copper River Basin. Otherwise, expect
outflow winds to pick up Sunday across Alaska Peninsula and around
the Gulf.

By Monday, a rather compact upper level low slides south from the
Bering Strait into the Bering Sea, drawing down colder air for
Southwest Alaska. While a bit chillier than what we're seeing now,
overnight lows remain relatively high at around 20-30 degrees for
Southwest Alaska. Precipitation generally tapers off across the
region on Monday as the Gulf low dissipates and moisture remains
relatively limited for the Bering Sea low.

By Tuesday, poorer model agreement leads to lower forecast
confidence. The main point of contention between models is how the
Bering upper low phases with an upper low moving towards the
Aleutians from the North Pacific. For the forecast, have leaned
towards the consensus where these two lows phase, leading to a
strengthened surface low with stronger winds and higher moisture
content as it moves towards the Southern Mainland for Wednesday.
The alternate scenario keeps the surface low weaker, with much
less impactful weather expected. Neither scenario looks
particularly hazardous, but we'll continue to monitor trends and
refine forecast details in the coming days.

-KC

&&

.AVIATION...

PANC...VFR conditions will persist through the TAF period.
Southeasterly Turnagain Arm winds are expected to pick up again
this afternoon and move over the terminal before diminishing
tonight. Winds thereafter should remain light and become northerly
by Thursday morning.

&&