Heavy Snow & Ice Across Portions of the Plains and Midwest; Unsettled in the Pacific Northwest

Heavy snow and freezing rain will impact portions of the Plains, upper Midwest, and Great Lakes into Monday. Significant snow accumulations and gusty winds are likely in some areas. Farther to the south, rain and a few thunderstorms are expected over the Mississippi, Tennessee, and Ohio Valleys. Heavy rain & mountain snowfall will also continue from northern California into the Pacific Northwest.

For More Weather Information:

Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

  • Tonight

    Partly Cloudy

    W 15kt

    Low: 36 °F

    Small Craft Advisory
    Small Craft Advisory

  • Sunday

    Partly Sunny

    W 10ktWinds Decreasing

    High: 42 °F

  • Sunday

    Partly Cloudy

    Light Wind
    < 1ft

    Low: 31 °F

  • Monday

    Rain/Snow Likely

    NE 10kt

    High: 38 °F

  • Monday


    E 15kt
    Waves Building4ft

    Low: 35 °F

  • Tuesday


    Winds IncreasingS 20kt
    Waves Building11ft

    High: 45 °F

  • Tuesday

    Chance Showers

    SSW 20kt
    9ftWaves Subsiding

    Low: 38 °F

  • Wednesday

    Mostly Sunny

    W 20kt

    High: 40 °F

  • Wednesday

    Partly Cloudy

    WNW 20kt

    Low: 22 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:02 pm EST Jan 20, 2018
Forecast Valid: 8pm EST Jan 20, 2018-6pm EST Jan 27, 2018

View Nearby Observations

Detailed Forecast

Synopsis: ANZ100-211415- 703 PM EST Sat Jan 20 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... A weak cold front will drop south from Canada tonight and will stall over southern New England Sunday and Sunday night. The front will lift north on Monday and Monday night as a warm front. Low pressure will track northeast through the ST Lawrence Valley on Tuesday and will drive a cold front through the region in the afternoon. A trough of low pressure will linger over the region Tuesday night and Wednesday. High pressure will gradually build in from the west Wednesday through Friday. $$

W wind 10 to 15 kt, with gusts as high as 20 kt. Partly cloudy. Seas around 2 ft.
W wind 7 to 10 kt decreasing to 5 to 8 kt in the afternoon. Partly sunny. Seas around 1 ft.
Sunday Night
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
NE wind 5 to 10 kt. A chance of rain before 2pm, then snow likely, possibly mixed with rain. Seas around 1 ft.
Monday Night
E wind 10 to 15 kt becoming ESE after midnight. Rain and snow likely before 9pm, then rain. Seas 2 ft building to 4 ft.
SE wind 15 to 18 kt becoming S 17 to 20 kt in the morning. Winds could gust as high as 30 kt. Rain. Seas 5 ft building to 11 ft.
Tuesday Night
SSW wind around 20 kt becoming WSW after midnight. Winds could gust as high as 25 kt. A chance of showers. Seas 9 ft subsiding to 6 ft.
W wind around 20 kt, with gusts as high as 30 kt. Mostly sunny. Seas 4 to 5 ft.
Wednesday Night
WNW wind around 20 kt, with gusts as high as 30 kt. Partly cloudy. Seas around 3 ft.


  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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Point Forecast: 43.17°N 70.36°W
Last Update: 7:02 pm EST Jan 20, 2018
Forecast Valid: 8pm EST Jan 20, 2018-6pm EST Jan 27, 2018
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