Heavy Rain and Mountain Snow This Week Northwest To Rockies; Heavy Rain May Bring Flooding to Portions of the East Late Week

At least two storm systems will batter the Pacific Northwest into the northern Rockies this week with heavy rain and mountain snow. The first system may bring as much as two feet of snow to the northern Cascades through Wednesday. This first system will then move over the central US by late week and bring heavy to excessive rain to portions of the south and east Thursday into this weekend.
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Portland, OR Local Forecast Office

32NM WSW Long Beach WA

Marine Point Forecast

[NOTICE]
  • Today

    Rain

    SW 25kt
    14-15ft

    Gale Warning
    Gale Warning

  • Tonight

    Showers

    WNW 29kt
    Waves Building18ft

    Gale Warning
    Gale Warning

  • Wednesday

    Slight Chc Showers

    SSW 18kt
    18-19ft
  • Wednesday
    Night

    Rain

    S 29kt
    20ft
  • Thursday

    Rain

    S 26kt
    20-21ft
  • Thursday
    Night

    Rain

    S 32kt
    24ft
  • Friday

    Rain

    SW 30kt
    22ft
  • Friday
    Night

    Showers Likely

    SW 26kt
    19ft
  • Saturday

    Rain Likely

    S 29kt
    15ft

Associated Zone Forecast which includes this point

Last Update: 3:57 am PST Dec 11, 2018
Forecast Valid: 8am PST Dec 11, 2018-6pm PST Dec 17, 2018

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Detailed Forecast


Synopsis: Winds increase ahead of a cold front expected to cross the waters this afternoon. Gusty winds and building seas will remain behind the front through Wednesday. A 972 mb low will pass well northwest of the waters Thursday night bringing a strong cold front Friday. Seas are likely to frequently reach and exceed 20 feet Wednesday through Saturday.

Today
SW wind 23 to 25 kt, with gusts as high as 31 kt. Rain. W swell 11 ft at 11 seconds. Wind waves 7 to 8 ft.
Tonight
WNW wind 27 to 29 kt, with gusts as high as 36 kt. Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 4am, then a slight chance of thunderstorms after 4am. W swell 16 ft at 12 seconds. Wind waves 7 to 8 ft.
Wednesday
W wind 15 to 18 kt becoming SSW in the afternoon. Winds could gust as high as 25 kt. A slight chance of showers after 10am. W swell 19 ft at 14 seconds. Wind waves 3 to 4 ft.
Wednesday Night
S wind around 29 kt, with gusts as high as 36 kt. Rain. WNW swell 17 to 18 ft. Wind waves 8 to 10 ft.
Thursday
S wind 22 to 26 kt, with gusts as high as 34 kt. Rain. WNW swell 19 ft. Wind waves 6 to 8 ft.
Thursday Night
S wind 23 to 32 kt, with gusts as high as 40 kt. Rain. Mixed swell...WNW 18 ft and WSW 11 ft. Wind waves 7 ft building to 11 ft.
Friday
SW wind 28 to 30 kt, with gusts as high as 37 kt. Rain. Mixed swell...WNW 16 ft and WSW 11 ft. Wind waves 9 to 10 ft.
Friday Night
SW wind 20 to 26 kt, with gusts as high as 34 kt. Showers likely. Mixed swell...WNW 14 ft and WSW 11 ft. Wind waves 5 to 7 ft.
Saturday
S wind 22 to 29 kt, with gusts as high as 38 kt. Rain likely. Mixed swell...WNW 12 ft and SW 5 ft. Wind waves 5 ft building to 8 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: 46.19°N 124.78°W
Last Update: 3:57 am PST Dec 11, 2018
Forecast Valid: 8am PST Dec 11, 2018-6pm PST Dec 17, 2018
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