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Anchorage, AK Local Forecast Office

20NM SSE Shumagin Islands AK

Marine Point Forecast

[NOTICE]

Today
High: 48 °F
SE 30kt
11ft

Small Craft Advisory
Tonight
Low: 43 °F
SE 25kt⇓
8-10ft

Small Craft Advisory
Wednesday
High: 46 °F
SSE 20kt
8-9ft

Small Craft Advisory
Wednesday Night
Low: 42 °F
ESE 20kt
7-9ft
Thursday
High: 45 °F
E 20kt
5-7ft
Thursday Night
Low: 42 °F
E 15kt⇓
4-5ft
Friday
High: 45 °F
W 10kt
3-4ft
Friday Night
Low: 34 °F
NNW 15kt
3ft
Saturday
High: 39 °F
⇑NW 30kt
6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 6:22 am AKST Dec 2, 2025
Forecast Valid: 9am AKST Dec 2, 2025-6pm AKST Dec 8, 2025

View Nearby Observations

Detailed Forecast

...GALE WARNING TODAY...

Synopsis: A 960 mb low 35 nm N of Unalaska moves to 115 nm S of Nikolski at 980 mb Wed morning and then to 135 nm SW of False Pass at 996 mb Thu morning. Its front moves across the Eastern Aleutians and eastern Bering through Wed. A separate front moves into the western Bering Wed night

Today

SE wind around 30 kt, with gusts as high as 40 kt. A chance of rain. Seas around 11 ft.

Tonight

SE wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Rain likely, mainly after 3am. Seas 8 to 10 ft.

Wednesday

SSE wind around 20 kt. Rain likely, mainly before 3pm. Seas 8 to 9 ft.

Wednesday Night

SSE wind around 20 kt becoming E after midnight. Rain likely, mainly between midnight and 3am. Seas 7 to 9 ft.

Thursday

E wind 15 to 20 kt. A chance of rain. Seas 5 to 7 ft.

Thursday Night

E wind 10 to 15 kt decreasing to 5 to 10 kt after midnight. Rain likely, mainly before 9pm. Seas 4 to 5 ft.

Friday

E wind 5 to 10 kt becoming W in the morning. A chance of rain. Seas 3 to 4 ft.

Friday Night

W wind 10 to 15 kt becoming NNW after midnight. A chance of rain. Seas around 3 ft.

Saturday

NW wind 15 to 20 kt increasing to 25 to 30 kt in the afternoon. A chance of rain, mixing with snow after 9am, then gradually ending. Seas 3 ft building to 6 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.