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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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Tonight

    Mostly Cloudy

    W 15kt
    2-3ft

    Low: 28 °F

    Small Craft Advisory
    Small Craft Advisory

  • Wednesday

    Mostly Cloudy

    Winds IncreasingW 20kt
    Waves Building4ft

    High: 42 °F

    Gale Warning
    Gale Warning

  • Wednesday
    Night

    Partly Cloudy

    WNW 25kt
    2-3ft

    Low: 18 °F

    Gale Warning
    Gale Warning

  • Thanksgiving
    Day

    Sunny

    NW 25kt
    2ft

    High: 21 °F

    Gale Warning
    Gale Warning

  • Thursday
    Night

    Mostly Clear

    NW 25ktWinds Decreasing
    1-2ft

    Low: 14 °F

    Gale Warning
    Gale Warning

  • Friday

    Sunny

    NW 15kt
    1ft

    High: 29 °F

  • Friday
    Night

    Mostly Clear

    WSW 15kt
    1-2ft

    Low: 23 °F

  • Saturday

    Mostly Sunny

    WSW 15kt
    2ft

    High: 41 °F

  • Saturday
    Night

    Rain Likely

    ESE 15kt
    Waves Building4ft

    Low: 41 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:23 pm EST Nov 20, 2018
Forecast Valid: 9pm EST Nov 20, 2018-6pm EST Nov 27, 2018

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Detailed Forecast


Synopsis: ANZ100-211400- 656 PM EST Tue Nov 20 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... Low pressure will move into the maritimes tonight. An Arctic cold front will cross the waters late Wednesday, followed by a gusty northwest flow Wednesday night through Friday. High pressure crests overhead Friday night into Saturday. && $$

Tonight
NW wind around 15 kt becoming W after midnight. Winds could gust as high as 20 kt. Mostly cloudy. Seas 2 to 3 ft.
Wednesday
W wind 15 to 18 kt becoming W 17 to 20 kt in the afternoon. Winds could gust as high as 30 kt. Mostly cloudy. Seas 2 ft building to 4 ft.
Wednesday Night
WNW wind 20 to 25 kt, with gusts as high as 35 kt. Partly cloudy. Seas 2 to 3 ft.
Thanksgiving Day
NW wind around 25 kt, with gusts as high as 30 kt. Sunny. Seas around 2 ft.
Thursday Night
NW wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Winds could gust as high as 30 kt. Mostly clear. Seas 1 to 2 ft.
Friday
NW wind 10 to 15 kt becoming W in the afternoon. Sunny. Seas around 1 ft.
Friday Night
WSW wind around 15 kt, with gusts as high as 20 kt. Mostly clear. Seas 1 to 2 ft.
Saturday
WSW wind 10 to 15 kt. Mostly sunny. Seas around 2 ft.
Saturday Night
SSW wind 10 to 15 kt becoming ESE after midnight. Rain likely. Seas 1 ft building 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: 42.99°N 70.62°W
Last Update: 5:23 pm EST Nov 20, 2018
Forecast Valid: 9pm EST Nov 20, 2018-6pm EST Nov 27, 2018
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