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Anchorage, AK Local Forecast Office

34NM ESE Seguam Island AK

Marine Point Forecast

[NOTICE]

This Afternoon
High: 43 °F
NE 25kt
11-12ft

Small Craft Advisory
Tonight
Low: 41 °F
N 30kt
18ft

Small Craft Advisory
Tuesday
High: 43 °F
N 35kt
28ft

Gale Warning
Tuesday Night
Low: 39 °F
N 35kt
25ft
Wednesday
High: 42 °F
N 30kt
19-20ft
Wednesday Night
Low: 40 °F
N 30kt
19ft
Thursday
High: 42 °F
N 25kt⇓
14ft
Thursday Night
Low: 39 °F
N 15kt⇓
11ft
Friday
High: 42 °F
SSE 10kt⇓
6-8ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 12:35 pm AKST Dec 1, 2025
Forecast Valid: 1pm AKST Dec 1, 2025-6pm AKST Dec 7, 2025

View Nearby Observations

Detailed Forecast

...GALE WARNING TUESDAY...

Synopsis: A 978 mb low 245 nm SW of Nikolski merges with a North Pacific low 110 nm S of Unalaska at 960 mb tonight. It then moves to 175 nm S of Nikolski at 978 mb Wed morning. Multiple fronts move across the Bering through Tue night.

This Afternoon

NE wind around 25 kt. Showers. Seas 11 to 12 ft.

Tonight

N wind 25 to 30 kt. Rain. Seas 13 ft building to 18 ft.

Tuesday

N wind around 35 kt, with gusts as high as 45 kt. Rain, mainly before 3pm. Seas 20 ft building to 28 ft.

Tuesday Night

N wind 25 to 35 kt. Rain likely, mainly before midnight. Seas 25 ft subsiding to 20 ft.

Wednesday

N wind around 30 kt, with gusts as high as 35 kt. Rain likely, mainly before 9am. Seas 19 to 20 ft.

Wednesday Night

N wind 25 to 30 kt, with gusts as high as 35 kt. A chance of rain. Seas 19 ft subsiding to 14 ft.

Thursday

N wind 20 to 25 kt decreasing to 15 to 20 kt in the afternoon. A chance of rain. Seas 14 ft subsiding to 11 ft.

Thursday Night

N wind 10 to 15 kt becoming S 5 to 10 kt after midnight. Winds could gust as high as 25 kt. A chance of rain. Seas 11 ft subsiding to 8 ft.

Friday

SSE wind 5 to 10 kt becoming variable and less than 5 kt in the afternoon. Rain likely. Seas 6 to 8 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.