Significant Snowfall for Washington Cascades and Northern Rocky Mountains

A cold front will linger for several days from the Pacific Northwest to portions of the northern Plains early this week. Cold temperatures and copious moisture will combine to produce several feet of snow into the mountain passes, with up to 4 feet of snow down to 4000 feet in the northern Rockies. Travel through mountain passes will be very difficult.
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Hazardous Weather Conditions

For More Weather Information:

Juneau, AK Local Forecast Office

4NM S Sitka AK

Marine Point Forecast

[NOTICE]
  • Overnight

    Rain/Snow Likely

    E 10kt
    2ft

    Low: 34 °F

    Small Craft Advisory
    Small Craft Advisory

  • Monday

    Scattered Showers

    ENE 10kt
    2ft

    High: 36 °F

    Small Craft Advisory
    Small Craft Advisory

  • Monday
    Night

    Isolated Showers

    ENE 10kt
    2-3ft

    Low: 32 °F

  • Tuesday

    Mostly Sunny

    Winds IncreasingWNW 10kt
    2ft

    High: 39 °F

  • Tuesday
    Night

    Showers Likely

    NW 15kt
    1-2ft

    Low: 36 °F

  • Wednesday

    Showers Likely

    WSW 10kt
    2-3ft

    High: 40 °F

  • Wednesday
    Night

    Scattered Showers

    W 10kt
    2-3ft

    Low: 35 °F

  • Thursday

    Mostly Cloudy

    E 10kt
    2ft

    High: 41 °F

  • Thursday
    Night

    Chance Rain

    E 10kt
    1-2ft

    Low: 36 °F


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:36 pm AKST Dec 17, 2017
Forecast Valid: 2am AKST Dec 18, 2017-6pm AKST Dec 24, 2017

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Detailed Forecast

...SMALL CRAFT ADVISORY DUE TO SEAS THROUGH MONDAY...

Synopsis: A weakening low over the central gulf will move E into the east-central gulf by early Mon morning. The low will then be pushed SE by a building high pressure area over the gulf and NW Canada Mon afternoon into Mon night.

Overnight
E wind around 10 kt. Rain showers likely before 3am, then rain and snow showers likely. Seas around 2 ft.
Monday
ENE wind 5 to 10 kt. Scattered showers. Seas around 2 ft.
Monday Night
ENE wind 5 to 10 kt becoming N after midnight. Isolated showers before 9pm. Seas 2 to 3 ft.
Tuesday
Variable winds less than 5 kt becoming WNW 5 to 10 kt in the afternoon. Mostly sunny. Seas around 2 ft.
Tuesday Night
NW wind 10 to 15 kt. Showers likely, mainly after 3am. Seas 1 to 2 ft.
Wednesday
WSW wind around 10 kt. Showers likely, mainly before 9am. Seas 2 to 3 ft.
Wednesday Night
W wind 5 to 10 kt. Scattered showers between 9pm and 3am. Seas 2 to 3 ft.
Thursday
W wind 5 to 10 kt becoming E in the afternoon. Mostly cloudy. Seas around 2 ft.
Thursday Night
E wind around 10 kt. A chance of rain. Seas 1 to 2 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: 56.99°N 135.36°W
Last Update: 9:36 pm AKST Dec 17, 2017
Forecast Valid: 2am AKST Dec 18, 2017-6pm AKST Dec 24, 2017
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