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:SSW wind 20 to 25 kt. Rain, mainly before 10pm. Seas 6 to 8 ft.

      Low: 40 °F

      SSW 25kt
      6-8ft

      Small Craft Advisory
      Small Craft Advisory

    • Tuesday

      Tuesday:WSW wind around 10 kt. A chance of rain, mainly before 1pm. Seas around 4 ft.

      High: 40 °F

      WSW 10kt
      4ft

    • Tuesday Night

      Tuesday Night:WSW wind 5 to 15 kt becoming S after midnight. A chance of rain, mainly after 4am. Seas around 3 ft.

      Low: 39 °F

      S 15kt
      3ft

    • Wednesday

      Wednesday:WSW wind around 20 kt, with gusts as high as 25 kt. A chance of showers before 10am. Seas 4 to 5 ft.

      High: 40 °F

      WSW 20kt
      4-5ft

    • Wednesday Night

      Wednesday Night:SW wind around 20 kt, with gusts as high as 25 kt. A chance of showers. Seas 6 to 7 ft.

      Low: 38 °F

      SW 20kt
      6-7ft

    • Thursday

      Thursday:WSW wind around 20 kt, with gusts as high as 30 kt. Rain after 4pm. Seas 6 to 8 ft.

      High: 39 °F

      WSW 20kt
      6-8ft

    • Thursday Night

      Thursday Night:WSW wind around 15 kt, with gusts as high as 25 kt. Rain. Seas 6 to 8 ft.

      Low: 37 °F

      WSW 15kt
      6-8ft

    • Friday

      Friday:SSW wind 10 to 15 kt. Rain. Seas around 5 ft.

      High: 42 °F

      SSW 15kt
      5ft

    • Friday Night

      Friday Night:SSE wind 15 to 20 kt. Rain. Seas 10 to 11 ft.

      Low: 36 °F

      SSE 20kt
      10-11ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:00 pm AKDT Apr 13, 2026
Forecast Valid: 6pm AKDT Apr 13, 2026-6pm AKDT Apr 20, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY TONIGHT AND TUESDAY NIGHT...

Synopsis: A 992 mb Kamchatka low moves to 140 nm N of Shemya Wed morning, and to 120 nm W of Saint Paul Thu morning.

Tonight
SSW wind 20 to 25 kt. Rain, mainly before 10pm. Seas 6 to 8 ft.
Tuesday
WSW wind around 10 kt. A chance of rain, mainly before 1pm. Seas around 4 ft.
Tuesday Night
WSW wind 5 to 15 kt becoming S after midnight. A chance of rain, mainly after 4am. Seas around 3 ft.
Wednesday
WSW wind around 20 kt, with gusts as high as 25 kt. A chance of showers before 10am. Seas 4 to 5 ft.
Wednesday Night
SW wind around 20 kt, with gusts as high as 25 kt. A chance of showers. Seas 6 to 7 ft.
Thursday
WSW wind around 20 kt, with gusts as high as 30 kt. Rain after 4pm. Seas 6 to 8 ft.
Thursday Night
WSW wind around 15 kt, with gusts as high as 25 kt. Rain. Seas 6 to 8 ft.
Friday
SSW wind 10 to 15 kt. Rain. Seas around 5 ft.
Friday Night
SSE wind 15 to 20 kt. Rain. Seas 10 to 11 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: 3:00 pm AKDT Apr 13, 2026
Forecast Valid: 6pm AKDT Apr 13, 2026-6pm AKDT Apr 20, 2026
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