Heavy Rain and Mountain Snow For the West Coast; Lake Effect Snow in the Great Lakes

A series of Pacific storms will deliver multiple rounds of heavy rain and mountain snow Wednesday into the Thanksgiving holiday weekend. There is an elevated concern for flash flooding, mudslides and debris flows near wildfire burn scars in California. A weak storm system will cross the Great Lakes Wednesday with accumulating Lake Effect snow.
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Portland, OR Local Forecast Office

7NM N Cape Lookout OR

Marine Point Forecast

[NOTICE]
  • Overnight

    Rain

    SE 10kt
    4ft

    Small Craft Advisory
    Small Craft Advisory

  • Wednesday

    Rain

    SSE 12kt
    6-8ft

    Small Craft Advisory
    Small Craft Advisory

  • Wednesday
    Night

    Rain Likely

    SSW 9kt
    8-10ft

    Small Craft Advisory
    Small Craft Advisory

  • Thanksgiving
    Day

    Rain

    Winds IncreasingS 27kt
    Waves Building13ft
  • Thursday
    Night

    Showers

    SSW 18kt
    11-13ft
  • Friday

    Rain

    W 14kt
    12ft
  • Friday
    Night

    Chance Rain

    W 14kt
    11ft
  • Saturday

    Slight Chc Rain

    SSE 9kt
    10ft
  • Saturday
    Night

    Chance Rain

    SE 9kt
    8ft

Associated Zone Forecast which includes this point

Last Update: 3:00 pm PST Nov 20, 2018
Forecast Valid: 11pm PST Nov 20, 2018-6pm PST Nov 27, 2018

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Detailed Forecast


Synopsis: A moderate frontal system will move across the waters tonight and Wednesday. A stronger system is likely on Thursday and will bring gale force winds and seas in the mid to upper teens. A period of calmer winds is possible over the weekend, but seas will likely remain elevated.

Overnight
SE wind 8 to 10 kt. Rain. W swell 3 ft at 12 seconds. Wind waves 2 to 3 ft.
Wednesday
SSE wind 10 to 12 kt. Rain. W swell 8 ft at 14 seconds. Wind waves 2 to 3 ft.
Wednesday Night
SSW wind around 9 kt. Rain likely. W swell 8 to 10 ft at 13 seconds. Wind waves 1 to 2 ft.
Thanksgiving Day
S wind 15 to 20 kt increasing to 22 to 27 kt in the morning. Winds could gust as high as 34 kt. Rain. W swell 9 ft. Wind waves 4 ft building to 9 ft.
Thursday Night
SSW wind around 18 kt. Showers. W swell 12 ft. Wind waves around 5 ft.
Friday
W wind 12 to 14 kt. Rain. W swell 12 ft. Wind waves around 3 ft.
Friday Night
W wind 8 to 14 kt. A chance of rain. W swell 11 ft. Wind waves 1 to 3 ft.
Saturday
SSE wind 7 to 9 kt. A slight chance of rain. W swell 10 ft. Wind waves 1 to 2 ft.
Saturday Night
SE wind around 9 kt. A chance of rain. W swell 8 ft. Wind waves 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: 45.46°N 123.99°W
Last Update: 3:00 pm PST Nov 20, 2018
Forecast Valid: 11pm PST Nov 20, 2018-6pm PST Nov 27, 2018
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