Hazardous Weather Conditions

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Anchorage, AK Local Forecast Office

20NM SSE Shumagin Islands AK

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:S wind around 15 kt becoming ESE in the afternoon. A chance of showers.   Seas 5 to 6 ft.

      High: 44 °F

      S 15kt
      5-6ft

    • Thursday Night

      Thursday Night:E wind 10 to 15 kt. Rain likely, mainly after midnight.   Seas 3 to 4 ft.

      Low: 43 °F

      E 15kt
      3-4ft

    • Friday

      Friday:ENE wind 5 to 10 kt becoming variable and less than 5 kt. A chance of rain before noon, then scattered showers after noon.   Seas 2 to 3 ft.

      High: 43 °F

      ENE 10kt⇓
      2-3ft

    • Friday Night

      Friday Night:NNW wind 10 to 15 kt. Scattered showers before midnight.   Seas 2 to 3 ft.

      Low: 42 °F

      NNW 15kt
      2-3ft

    • Saturday

      Saturday:NW wind 20 to 25 kt increasing to 30 to 35 kt in the afternoon. Widespread freezing spray after 3pm. Sunny. Seas 3 ft building to 6 ft.

      High: 37 °F

      ⇑NW 35kt
      Waves Building6ft

    • Saturday Night

      Saturday Night:NNW wind 25 to 35 kt decreasing to 15 to 25 kt after midnight. A chance of snow before midnight, then snow likely after 3am.  Widespread freezing spray.  Seas 3 to 5 ft.

      Low: 34 °F

      NNW 35kt⇓
      3-5ft

    • Sunday

      Sunday:NNE wind 5 to 15 kt. Snow likely, mainly before 3pm.  Widespread freezing spray before 9am.  Seas 2 to 3 ft.

      High: 28 °F

      NNE 15kt
      2-3ft

    • Sunday Night

      Sunday Night:N wind 5 to 10 kt. A chance of snow.   Seas 2 to 3 ft.

      Low: 23 °F

      N 10kt
      2-3ft

    • Monday

      Monday:N wind 10 to 15 kt. Snow likely.   Seas 3 to 4 ft.

      High: 33 °F

      N 15kt
      3-4ft


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 8:11 pm AKST Dec 3, 2025
Forecast Valid: 1am AKST Dec 4, 2025-6pm AKST Dec 10, 2025

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Detailed Forecast

...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT...

Synopsis: A 990 mb low roughly 90 nm S of Unalaska slowly weakens south of the Eastern Aleutians and dissipates through Fri morning. A broad front overspreads the Western Aleutians Thu afternoon with a developing 998 mb low 250 nm SE of Adak Fri afternoon.

Thursday
S wind around 15 kt becoming ESE in the afternoon. A chance of showers. Seas 5 to 6 ft.
Thursday Night
E wind 10 to 15 kt. Rain likely, mainly after midnight. Seas 3 to 4 ft.
Friday
ENE wind 5 to 10 kt becoming variable and less than 5 kt. A chance of rain before noon, then scattered showers after noon. Seas 2 to 3 ft.
Friday Night
NNW wind 10 to 15 kt. Scattered showers before midnight. Seas 2 to 3 ft.
Saturday
NW wind 20 to 25 kt increasing to 30 to 35 kt in the afternoon. Widespread freezing spray after 3pm. Sunny. Seas 3 ft building to 6 ft.
Saturday Night
NNW wind 25 to 35 kt decreasing to 15 to 25 kt after midnight. A chance of snow before midnight, then snow likely after 3am. Widespread freezing spray. Seas 3 to 5 ft.
Sunday
NNE wind 5 to 15 kt. Snow likely, mainly before 3pm. Widespread freezing spray before 9am. Seas 2 to 3 ft.
Sunday Night
N wind 5 to 10 kt. A chance of snow. Seas 2 to 3 ft.
Monday
N wind 10 to 15 kt. Snow likely. Seas 3 to 4 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: 54.83°N 159.6°W
Last Update: 8:11 pm AKST Dec 3, 2025
Forecast Valid: 1am AKST Dec 4, 2025-6pm AKST Dec 10, 2025
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