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

8NM ENE Portland ME

Marine Point Forecast

[NOTICE]
  • Tonight

    Slight Chc Snow

    NNW 20km/h
    < 1m

    Low: -3 °C

  • Wednesday

    Mostly Cloudy

    Winds IncreasingW 35km/h
    < 1m

    High: 4 °C

  • Wednesday
    Night

    Mostly Clear

    NW 40km/hWinds Decreasing
    < 1m

    Low: -9 °C

  • Thanksgiving
    Day

    Sunny

    NW 35km/h
    < 1m

    High: -7 °C

  • Thursday
    Night

    Mostly Clear

    NW 30km/hWinds Decreasing
    < 1m

    Low: -11 °C

  • Friday

    Sunny

    WNW 20km/h
    < 1m

    High: -3 °C

  • Friday
    Night

    Mostly Clear

    W 20km/h
    < 1m

    Low: -8 °C

  • Saturday

    Mostly Sunny

    W 15km/h
    < 1m

    High: 3 °C

  • Saturday
    Night

    Chance Rain

    E 15km/h
    < 1m

    Low: 2 °C


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
NNW wind 15 to 20 km/h becoming WNW after midnight. A slight chance of snow showers before 10pm. Seas 1 m or less.
Wednesday
WNW wind 15 to 20 km/h becoming W 30 to 35 km/h. Winds could gust as high as 50 km/h. Mostly cloudy. Seas 1 m or less.
Wednesday Night
NW wind 37 to 40 km/h decreasing to 35 to 38 km/h after midnight. Winds could gust as high as 65 km/h. Mostly clear. Seas 1 m or less.
Thanksgiving Day
NW wind 30 to 35 km/h, with gusts as high as 50 km/h. Sunny. Seas 1 m or less.
Thursday Night
NW wind 27 to 30 km/h decreasing to 25 to 28 km/h after midnight. Winds could gust as high as 45 km/h. Mostly clear. Seas 1 m or less.
Friday
WNW wind 15 to 20 km/h. Sunny. Seas 1 m or less.
Friday Night
W wind 15 to 20 km/h. Mostly clear. Seas 1 m or less.
Saturday
W wind around 15 km/h becoming SW in the afternoon. Mostly sunny. Seas 1 m or less.
Saturday Night
SW wind around 15 km/h becoming E after midnight. A chance of rain. Seas 1 m 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: 43.73°N 70.1°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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