Heavy Snow and High Winds in the West; Lake Effect Snow in the Great Lakes

A Pacific storm moving across the Northwest with a trailing cold front sweeping through the West will continue heavy snow over the Cascades, northern Rockies, and the Sierra into Thursday night. High winds are forecast on the High Plains Thursday into Friday. Heavy lake effect snow will continue downwind of the Great Lakes into Thursday.
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Seattle, WA Local Forecast Office

23NM SW Seattle WA

Marine Point Forecast

[NOTICE]
  • Overnight

    Rain/Snow Likely

    N 11kt
    < 1ft
  • Thursday

    Chance Rain/Snow

    Winds IncreasingNNE 8kt
    < 1ft
  • Thursday
    Night

    Chance Snow

    Light Wind
    < 1ft
  • Friday

    Rain/Snow Likely

    Light Wind
    < 1ft
  • Friday
    Night

    Rain/Snow

    Light Wind
    < 1ft
  • Saturday

    Rain/Snow Likely

    Winds IncreasingNNE 6kt
    < 1ft
  • Saturday
    Night

    Partly Cloudy

    Light Wind
    < 1ft
  • Sunday

    Mostly Sunny

    Light Wind
    < 1ft
  • Sunday
    Night

    Slight Chc Rain

    Light Wind
    < 1ft

Associated Zone Forecast which includes this point

Last Update: 8:40 pm PST Nov 30, 2022
Forecast Valid: 12am PST Dec 1, 2022-6pm PST Dec 7, 2022

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Detailed Forecast


Synopsis: A surface low will gradually fill over Vancouver Island as an associated frontal system moves through our area this evening. Surface high pressure expanding southward over interior British Columbia will lead to a round of Fraser outflow winds later this evening into Thursday. Another front will reach the area on Friday with an additional set of headlines likely.

Overnight
N wind around 11 kt. Rain and snow likely, becoming all snow after 1am. Wind waves 1 ft or less.
Thursday
Variable winds less than 5 kt becoming NNE 5 to 8 kt in the morning. A chance of rain and snow before 4pm, then a slight chance of rain. Wind waves 1 ft or less.
Thursday Night
Variable winds 5 kt or less. A chance of snow, mainly after 4am. Wind waves 1 ft or less.
Friday
Variable winds 5 kt or less. Snow likely before 1pm, then rain and snow likely between 1pm and 4pm, then rain likely after 4pm. Wind waves 1 ft or less.
Friday Night
Variable winds 5 kt or less. Rain before 7pm, then rain and snow. Wind waves 1 ft or less.
Saturday
Variable winds less than 5 kt becoming NNE around 6 kt in the afternoon. Rain and snow likely before 10am, then a slight chance of rain. Wind waves 1 ft or less.
Saturday Night
Variable winds 5 kt or less. Partly cloudy. Wind waves 1 ft or less.
Sunday
Variable winds 5 kt or less. Mostly sunny. Wind waves 1 ft or less.
Sunday Night
Variable winds 5 kt or less. A slight chance of rain. Wind waves 1 ft or less.

*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: 47.41°N 122.83°W
Last Update: 8:40 pm PST Nov 30, 2022
Forecast Valid: 12am PST Dec 1, 2022-6pm PST Dec 7, 2022
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