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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

Tonight
Low: 36 °F
W 35kt
16-18ft

Gale Warning
Tuesday
High: 40 °F
W 30kt
16ft

Small Craft Advisory
Tuesday Night
Low: 36 °F
W 20kt⇓
10ft
Wednesday
High: 40 °F
ENE 25kt
6ft
Wednesday Night
Low: 37 °F
NE 25kt
8ft
Thursday
High: 40 °F
NNE 20kt
7-8ft
Thursday Night
Low: 36 °F
N 25kt
6-7ft
Friday
High: 39 °F
NNW 25kt
6ft
Friday Night
Low: 36 °F
NW 30kt
13ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:42 pm AKDT Apr 27, 2026
Forecast Valid: 6pm AKDT Apr 27, 2026-6pm AKDT May 4, 2026

View Nearby Observations

Detailed Forecast

...GALE WARNING TONIGHT...

Synopsis: A 973 mb low 160 nm SW of St. Paul moves to 50 nm NE of St. Paul at 986 mb by Tue afternoon. It then continues to weaken to 995 mb, lifting to 170 nm W of Toksook Bay by Wed afternoon. The front of a 985 mb North Pacific low near 150 nm SE of Adak pushes it front into the southern Bering by Wed afternoon.

Tonight

W wind around 35 kt, with gusts as high as 40 kt. Rain and snow showers likely before 7pm, then rain showers likely between 7pm and 1am, then rain and snow showers likely after 1am. Seas 16 to 18 ft.

Tuesday

W wind 25 to 30 kt, with gusts as high as 40 kt. Snow showers likely, possibly mixed with rain, mainly before 7am. Seas 16 ft subsiding to 13 ft.

Tuesday Night

W wind 15 to 20 kt becoming S 10 to 15 kt after midnight. Scattered rain and snow showers between 10pm and 4am, then scattered rain showers after 4am. Seas 10 ft subsiding to 7 ft.

Wednesday

ENE wind 20 to 25 kt, with gusts as high as 30 kt. Scattered rain before 7am, then rain and snow likely between 7am and 10am, then rain likely after 10am. Seas around 6 ft.

Wednesday Night

NE wind 20 to 25 kt. A chance of rain. Seas around 8 ft.

Thursday

NNE wind around 20 kt. Rain likely. Seas 7 to 8 ft.

Thursday Night

N wind 20 to 25 kt. Rain. Seas 6 to 7 ft.

Friday

NNW wind around 25 kt. Rain. Seas around 6 ft.

Friday Night

NW wind 25 to 30 kt. Rain. Seas 8 ft building to 13 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.