National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]

    • Tonight

      Tonight:WSW wind 25 to 35 kt, with gusts as high as 40 kt. Showers likely, mainly before 1am. Seas 11 to 13 ft.

      Low: 37 °F

      WSW 35kt
      11-13ft

      Gale Warning
      Gale Warning

    • Thursday

      Thursday:WSW wind 20 to 25 kt. A chance of rain showers before 1pm, then a slight chance of rain and snow showers. Seas around 8 ft.

      High: 41 °F

      WSW 25kt
      8ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday Night

      Thursday Night:W wind around 20 kt. A slight chance of rain and snow showers before 7pm. Seas around 8 ft.

      Low: 35 °F

      W 20kt
      8ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:W wind 15 to 20 kt. Mostly cloudy. Seas around 7 ft.

      High: 39 °F

      W 20kt
      7ft

    • Friday Night

      Friday Night:W wind 5 to 10 kt becoming SE after midnight. A chance of rain and snow after 4am. Seas 5 to 6 ft.

      Low: 35 °F

      W 10kt
      5-6ft

    • Saturday

      Saturday:ESE wind 30 to 35 kt increasing to 40 to 45 kt in the afternoon. Winds could gust as high as 50 kt. A chance of rain and snow before 7am, then rain. Seas 7 ft building to 11 ft.

      High: 43 °F

      ⇑ESE 45kt
      Waves Building11ft

    • Saturday Night

      Saturday Night:S wind 40 to 45 kt, with gusts as high as 55 kt. Rain. Seas 13 ft building to 20 ft.

      Low: 37 °F

      S 45kt
      Waves Building20ft

    • Sunday

      Sunday:WSW wind around 45 kt, with gusts as high as 55 kt. Rain. Seas 19 to 20 ft.

      High: 40 °F

      WSW 45kt
      19-20ft

    • Sunday Night

      Sunday Night:WSW wind 40 to 45 kt, with gusts as high as 50 kt. Rain. Seas 21 ft subsiding to 17 ft.

      Low: 36 °F

      WSW 45kt
      21ftWaves Subsiding


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:21 pm AKDT Apr 22, 2026
Forecast Valid: 8pm AKDT Apr 22, 2026-6pm AKDT Apr 29, 2026

View Nearby Observations

Detailed Forecast

...GALE WARNING TONIGHT...

Synopsis: A 970 mb low 150 nm N of Adak moves to Saint Matthew Island at 986 mb by Thu afternoon then to 140 nm NW of Saint Matthew Island at 1001 mb by Fri afternoon.

Tonight
WSW wind 25 to 35 kt, with gusts as high as 40 kt. Showers likely, mainly before 1am. Seas 11 to 13 ft.
Thursday
WSW wind 20 to 25 kt. A chance of rain showers before 1pm, then a slight chance of rain and snow showers. Seas around 8 ft.
Thursday Night
W wind around 20 kt. A slight chance of rain and snow showers before 7pm. Seas around 8 ft.
Friday
W wind 15 to 20 kt. Mostly cloudy. Seas around 7 ft.
Friday Night
W wind 5 to 10 kt becoming SE after midnight. A chance of rain and snow after 4am. Seas 5 to 6 ft.
Saturday
ESE wind 30 to 35 kt increasing to 40 to 45 kt in the afternoon. Winds could gust as high as 50 kt. A chance of rain and snow before 7am, then rain. Seas 7 ft building to 11 ft.
Saturday Night
S wind 40 to 45 kt, with gusts as high as 55 kt. Rain. Seas 13 ft building to 20 ft.
Sunday
WSW wind around 45 kt, with gusts as high as 55 kt. Rain. Seas 19 to 20 ft.
Sunday Night
WSW wind 40 to 45 kt, with gusts as high as 50 kt. Rain. Seas 21 ft subsiding to 17 ft.

*Notices:

  1. 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.
  2. 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.
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ABOUT THIS FORECAST

Point Forecast: 52.89°N 173.1°W
Last Update: 3:21 pm AKDT Apr 22, 2026
Forecast Valid: 8pm AKDT Apr 22, 2026-6pm AKDT Apr 29, 2026
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