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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 20 to 25 kt. A slight chance of rain and snow showers before 1am, then a slight chance of rain and snow showers after 4am. Seas around 8 ft.

      Low: 36 °F

      WSW 25kt
      8ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:W wind around 20 kt. A slight chance of rain and snow showers before 10am. Seas around 7 ft.

      High: 38 °F

      W 20kt
      7ft

    • Friday Night

      Friday Night:W wind 15 to 20 kt becoming SSW 5 to 10 kt after midnight. A slight chance of snow after 4am. Seas 6 to 7 ft.

      Low: 36 °F

      W 20kt⇓
      6-7ft

    • Saturday

      Saturday:ESE wind 25 to 35 kt increasing to 35 to 45 kt in the afternoon. Winds could gust as high as 55 kt. Snow likely before 10am, then rain and snow between 10am and 1pm, then rain after 1pm. The rain and snow could be heavy at times. Seas 5 ft building to 12 ft.

      High: 42 °F

      ⇑ESE 45kt
      Waves Building12ft

    • Saturday Night

      Saturday Night:S wind 40 to 50 kt, with gusts as high as 60 kt. Showers. Seas 14 ft building to 20 ft.

      Low: 37 °F

      S 50kt
      Waves Building20ft

    • Sunday

      Sunday:WSW wind 45 to 50 kt, with gusts as high as 60 kt. Rain showers before 10am, then rain and snow showers. Seas 16 to 18 ft.

      High: 38 °F

      WSW 50kt
      16-18ft

    • Sunday Night

      Sunday Night:WSW wind 40 to 45 kt, with gusts as high as 55 kt. Rain and snow showers before 10pm, then rain. Seas 21 ft subsiding to 17 ft.

      Low: 36 °F

      WSW 45kt
      21ftWaves Subsiding

    • Monday

      Monday:W wind 35 to 40 kt. Rain. Seas 15 to 17 ft.

      High: 40 °F

      W 40kt
      15-17ft

    • Monday Night

      Monday Night:W wind around 30 kt. Rain. Seas 14 to 16 ft.

      Low: 36 °F

      W 30kt
      14-16ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:29 pm AKDT Apr 23, 2026
Forecast Valid: 7pm AKDT Apr 23, 2026-6pm AKDT Apr 30, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT...

Synopsis: A 988 mb low 20 nm W of St Matthew moves to 275 nm W of St Matthew at 1002 mb by Sat afternoon. A 1003 mb low 205 nm S of Amchitka moves to 60 nm S of Akhiok at 1014 mb by Sat afternoon. A North Pacific low pushes its front into the Western Aleutians by Sat morning and moves to 95 nm S of Seguam Island at 954 mb by Sat afternoon.

Tonight
WSW wind 20 to 25 kt. A slight chance of rain and snow showers before 1am, then a slight chance of rain and snow showers after 4am. Seas around 8 ft.
Friday
W wind around 20 kt. A slight chance of rain and snow showers before 10am. Seas around 7 ft.
Friday Night
W wind 15 to 20 kt becoming SSW 5 to 10 kt after midnight. A slight chance of snow after 4am. Seas 6 to 7 ft.
Saturday
ESE wind 25 to 35 kt increasing to 35 to 45 kt in the afternoon. Winds could gust as high as 55 kt. Snow likely before 10am, then rain and snow between 10am and 1pm, then rain after 1pm. The rain and snow could be heavy at times. Seas 5 ft building to 12 ft.
Saturday Night
S wind 40 to 50 kt, with gusts as high as 60 kt. Showers. Seas 14 ft building to 20 ft.
Sunday
WSW wind 45 to 50 kt, with gusts as high as 60 kt. Rain showers before 10am, then rain and snow showers. Seas 16 to 18 ft.
Sunday Night
WSW wind 40 to 45 kt, with gusts as high as 55 kt. Rain and snow showers before 10pm, then rain. Seas 21 ft subsiding to 17 ft.
Monday
W wind 35 to 40 kt. Rain. Seas 15 to 17 ft.
Monday Night
W wind around 30 kt. Rain. Seas 14 to 16 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: 3:29 pm AKDT Apr 23, 2026
Forecast Valid: 7pm AKDT Apr 23, 2026-6pm AKDT Apr 30, 2026
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