Hazardous Weather Conditions

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Anchorage, AK Local Forecast Office

39NM NW Seguam Island AK

Marine Point Forecast

[NOTICE]
    • Today

      Today:SW wind 35 to 40 kt decreasing to 25 to 30 kt in the afternoon. Rain likely, mainly before 1pm.   Seas 14 ft subsiding to 10 ft.

      High: 43 °F

      SW 40kt⇓
      14ftWaves Subsiding

      Gale Warning
      Gale Warning

    • Tonight

      Tonight:SW wind 30 to 35 kt, with gusts as high as 45 kt. A slight chance of snow showers before 7pm, then rain and snow showers likely.   Seas 14 ft building to 18 ft.

      Low: 37 °F

      SW 35kt
      Waves Building18ft

      Gale Warning
      Gale Warning

    • Sunday

      Sunday:WSW wind 35 to 40 kt, with gusts as high as 50 kt. Rain and snow showers likely, mainly before 1pm.   Seas 20 to 21 ft.

      High: 39 °F

      WSW 40kt
      20-21ft

      Gale Warning
      Gale Warning

    • Sunday Night

      Sunday Night:SW wind 25 to 30 kt. Scattered showers before 10pm, then scattered showers after 1am.   Seas 14 to 16 ft.

      Low: 38 °F

      SW 30kt
      14-16ft

    • Monday

      Monday:S wind 25 to 30 kt. A chance of rain.   Seas 9 to 11 ft.

      High: 41 °F

      S 30kt
      9-11ft

    • Monday Night

      Monday Night:SSE wind around 25 kt, with gusts as high as 30 kt. A chance of rain.   Seas 7 to 9 ft.

      Low: 39 °F

      SSE 25kt
      7-9ft

    • Tuesday

      Tuesday:ESE wind around 25 kt, with gusts as high as 30 kt. Rain.   Seas 6 to 7 ft.

      High: 42 °F

      ESE 25kt
      6-7ft

    • Tuesday Night

      Tuesday Night:S wind around 30 kt. Rain.   Seas 6 ft building to 9 ft.

      Low: 37 °F

      S 30kt
      Waves Building9ft

    • Wednesday

      Wednesday:SW wind 25 to 30 kt. Rain.   Seas 9 ft building to 12 ft.

      High: 40 °F

      SW 30kt
      Waves Building12ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:35 am AKDT Apr 18, 2026
Forecast Valid: 5am AKDT Apr 18, 2026-6pm AKDT Apr 24, 2026

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Detailed Forecast

...GALE WARNING THROUGH SUNDAY...

Synopsis: A 962 mb low 110 nm NE of Shemya moves to 280 nm N of Shemya at 968 mb by Sun morning and continues to 100 nm NW of Saint Paul at 996 mb by Mon morning. Its front moves east through the Aleutian Chain and pushes inland by Sun morning. A 992 mb low arrives at 170 nm S of Shemya by Mon morning.

Today
SW wind 35 to 40 kt decreasing to 25 to 30 kt in the afternoon. Rain likely, mainly before 1pm. Seas 14 ft subsiding to 10 ft.
Tonight
SW wind 30 to 35 kt, with gusts as high as 45 kt. A slight chance of snow showers before 7pm, then rain and snow showers likely. Seas 14 ft building to 18 ft.
Sunday
WSW wind 35 to 40 kt, with gusts as high as 50 kt. Rain and snow showers likely, mainly before 1pm. Seas 20 to 21 ft.
Sunday Night
SW wind 25 to 30 kt. Scattered showers before 10pm, then scattered showers after 1am. Seas 14 to 16 ft.
Monday
S wind 25 to 30 kt. A chance of rain. Seas 9 to 11 ft.
Monday Night
SSE wind around 25 kt, with gusts as high as 30 kt. A chance of rain. Seas 7 to 9 ft.
Tuesday
ESE wind around 25 kt, with gusts as high as 30 kt. Rain. Seas 6 to 7 ft.
Tuesday Night
S wind around 30 kt. Rain. Seas 6 ft building to 9 ft.
Wednesday
SW wind 25 to 30 kt. Rain. Seas 9 ft building to 12 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: 4:35 am AKDT Apr 18, 2026
Forecast Valid: 5am AKDT Apr 18, 2026-6pm AKDT Apr 24, 2026
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