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Anchorage, AK Local Forecast Office

20NM SSE Shumagin Islands AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 44 °F
S 20kt
5-7ft
Monday
High: 46 °F
SSW 20kt
5-6ft
Monday Night
Low: 44 °F
⇑ESE 40kt
11ft

Gale Warning
Tuesday
High: 47 °F
SSE 40kt
10-11ft
Tuesday Night
Low: 41 °F
SSE 30kt
7-9ft
Wednesday
High: 46 °F
SSE 20kt
7ft
Wednesday Night
Low: 42 °F
SSE 15kt
6-7ft
Thursday
High: 44 °F
ESE 15kt
4-6ft
Thursday Night
Low: 41 °F
ESE 10kt
4ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:04 pm AKST Nov 30, 2025
Forecast Valid: 9pm AKST Nov 30, 2025-6pm AKST Dec 7, 2025

View Nearby Observations

Detailed Forecast

...GALE WARNING MONDAY NIGHT...

Synopsis: An elongated 980 mb trough at 185 nm SE of Unalaska merges with a circulation from the south and becomes a complex of low centers with the strongest at 968 mb at 260 nm S of Unalaska Mon afternoon. The complex continues to 120 nm W of Unalaska at 970 mb by Tue afternoon. Multiple fronts move into the Bering through Tue afternoon.

Tonight

S wind 15 to 20 kt, with gusts as high as 25 kt. Rain likely, mainly before midnight. Seas 5 to 7 ft.

Monday

SSW wind around 20 kt becoming SE in the afternoon. Rain before noon, then showers, mainly between noon and 3pm. Seas 5 to 6 ft.

Monday Night

ESE wind 25 to 30 kt becoming ESE 35 to 40 kt after midnight. Winds could gust as high as 45 kt. Rain, mainly before 3am, then a chance of showers after 3am. Seas 7 ft building to 11 ft.

Tuesday

SSE wind 30 to 40 kt, with gusts as high as 45 kt. A chance of rain. Seas 10 to 11 ft.

Tuesday Night

SSE wind 20 to 30 kt. Rain likely, mainly after 9pm. Seas 7 to 9 ft.

Wednesday

SSE wind 15 to 20 kt. Rain likely before 9am. Seas around 7 ft.

Wednesday Night

SSE wind 10 to 15 kt. A chance of rain after 9pm. Seas 6 to 7 ft.

Thursday

ESE wind 10 to 15 kt. Rain likely. Seas 4 to 6 ft.

Thursday Night

ESE wind 5 to 10 kt. Rain likely. Seas around 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.