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Anchorage, AK Local Forecast Office

20NM SSE Shumagin Islands AK

Marine Point Forecast

[NOTICE]

Today
High: 45 °F
ESE 15kt
5-6ft
Tonight
Low: 42 °F
E 10kt
3-4ft
Friday
High: 44 °F
NW 10kt
2-3ft
Friday Night
Low: 34 °F
NW 20kt
3ft
Saturday
High: 37 °F
NW 35kt
4-6ft
Saturday Night
Low: 23 °F
NNW 30kt⇓
3-5ft
Sunday
High: 28 °F
NNE 15kt
2-3ft
Sunday Night
Low: 25 °F
N 10kt
2-3ft
Monday
High: 33 °F
N 15kt
3-4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:52 am AKST Dec 4, 2025
Forecast Valid: 8am AKST Dec 4, 2025-6pm AKST Dec 10, 2025

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY TODAY...

Synopsis: A 990 mb low 140 nm S of Cold Bay slowly dissipates through Fri morning. A broad front overspreads the Western Bering Thu afternoon with a 1001 mb low developing 250 nm SW of Adak Fri afternoon, then continuing SE into the North Pacific by Sat morning.

Today

ESE wind 10 to 15 kt. Showers likely, mainly before 9am. Seas 5 to 6 ft.

Tonight

E wind 5 to 10 kt. Showers likely, mainly after midnight. Seas 3 to 4 ft.

Friday

ENE wind 5 to 10 kt becoming WNW in the morning. Showers likely, mainly between 9am and noon. Seas 2 to 3 ft.

Friday Night

NW wind 15 to 20 kt. A chance of showers before 9pm. Seas around 3 ft.

Saturday

NW wind 25 to 35 kt. A chance of snow showers after 3pm. Seas 4 to 6 ft.

Saturday Night

NNW wind 25 to 30 kt decreasing to 15 to 20 kt after midnight. Winds could gust as high as 40 kt. A chance of snow before midnight, then a chance of snow after 3am. Widespread freezing spray before 3am. Seas 3 to 5 ft.

Sunday

NNE wind 5 to 15 kt. Snow likely, mainly between 9am and 3pm. Seas 2 to 3 ft.

Sunday Night

N wind 5 to 10 kt. A chance of snow. Seas 2 to 3 ft.

Monday

N wind 10 to 15 kt. Snow likely. Seas 3 to 4 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.