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 15 to 20 kt becoming S after midnight. Winds could gust as high as 25 kt. Rain, mainly after 1am.   Seas around 6 ft.

      Low: 38 °F

      S 20kt
      6ft

    • Wednesday

      Wednesday:S wind 25 to 35 kt. Rain.   Seas 8 to 10 ft.

      High: 41 °F

      S 35kt
      8-10ft

      Small Craft Advisory
      Small Craft Advisory

    • Wednesday Night

      Wednesday Night:W wind 20 to 25 kt. Showers likely, mainly before 7pm.   Seas 7 to 9 ft.

      Low: 38 °F

      W 25kt
      7-9ft

      Small Craft Advisory
      Small Craft Advisory

    • Thursday

      Thursday:W wind around 30 kt. A chance of showers before 10am.   Seas 9 to 11 ft.

      High: 41 °F

      W 30kt
      9-11ft

    • Thursday Night

      Thursday Night:W wind around 25 kt. Mostly cloudy. Seas 9 to 10 ft.

      Low: 38 °F

      W 25kt
      9-10ft

    • Friday

      Friday:W wind 15 to 20 kt, with gusts as high as 30 kt. Partly sunny. Seas 5 to 7 ft.

      High: 41 °F

      W 20kt
      5-7ft

    • Friday Night

      Friday Night:NW wind 10 to 15 kt. A chance of showers after 10pm.   Seas around 5 ft.

      Low: 37 °F

      NW 15kt
      5ft

    • Saturday

      Saturday:NW wind around 20 kt. A chance of showers.   Seas around 4 ft.

      High: 41 °F

      NW 20kt
      4ft

    • Saturday Night

      Saturday Night:NW wind 15 to 20 kt becoming N in the evening. A chance of showers.   Seas around 3 ft.

      Low: 37 °F

      NW 20kt
      3ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:35 pm AKDT May 19, 2026
Forecast Valid: 7pm AKDT May 19, 2026-6pm AKDT May 26, 2026

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Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH WEDNESDAY NIGHT...

Synopsis: A 994 mb low 125 nm W of Saint Paul remains nearly stationary before dissipating Wed morning. A 981 mb North Pacific low 220 nm S of Shemya moves to 10 nm E of Atka for Wed afternoon. This low continues to 75 nm SW of Cape Newenham at 992 mb by Thu afternoon.

Tonight
WSW wind 15 to 20 kt becoming S after midnight. Winds could gust as high as 25 kt. Rain, mainly after 1am. Seas around 6 ft.
Wednesday
S wind 25 to 35 kt. Rain. Seas 8 to 10 ft.
Wednesday Night
W wind 20 to 25 kt. Showers likely, mainly before 7pm. Seas 7 to 9 ft.
Thursday
W wind around 30 kt. A chance of showers before 10am. Seas 9 to 11 ft.
Thursday Night
W wind around 25 kt. Mostly cloudy. Seas 9 to 10 ft.
Friday
W wind 15 to 20 kt, with gusts as high as 30 kt. Partly sunny. Seas 5 to 7 ft.
Friday Night
NW wind 10 to 15 kt. A chance of showers after 10pm. Seas around 5 ft.
Saturday
NW wind around 20 kt. A chance of showers. Seas around 4 ft.
Saturday Night
NW wind 15 to 20 kt becoming N in the evening. A chance of showers. Seas around 3 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: 3:35 pm AKDT May 19, 2026
Forecast Valid: 7pm AKDT May 19, 2026-6pm AKDT May 26, 2026
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