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

25NM ENE Portsmouth NH

Marine Point Forecast

  • Overnight


    Light Wind

    Low: 38 °F

  • Monday

    Chance Rain/Snow

    Winds IncreasingENE 10kt
    Waves Building3ft

    High: 40 °F

  • Monday


    E 15ktWinds Decreasing

    Low: 36 °F

  • Tuesday


    Winds IncreasingS 25kt
    Waves Building9ft

    High: 45 °F

    Gale Warning
    Gale Warning

  • Tuesday

    Chance Showers

    S 20kt
    8ftWaves Subsiding

    Low: 37 °F

    Gale Warning
    Gale Warning

  • Wednesday


    W 20kt

    High: 38 °F

  • Wednesday

    Partly Cloudy

    NW 20kt

    Low: 21 °F

  • Thursday

    Mostly Sunny

    NW 20kt

    High: 25 °F

  • Thursday

    Mostly Clear

    NW 20kt

    Low: 17 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:55 am EST Jan 22, 2018
Forecast Valid: 4am EST Jan 22, 2018-6pm EST Jan 28, 2018

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Detailed Forecast

Synopsis: ANZ100-221700- 949 PM EST Sun Jan 21 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... A stalled frontal boundary across southern New England will gradually lift north as a warm front late tonight through Monday night. Low pressure will track northeast out of the Great Lakes and into the St Lawrence Valley on Tuesday and will drive a cold front through the region late in the day. Low pressure will continue northeast into the maritimes Tuesday night. High pressure will slowly build in from the west Wednesday through Friday. $$

Variable winds 5 kt or less. Cloudy. Seas around 1 ft.
SE wind 5 to 8 kt becoming ENE 7 to 10 kt in the afternoon. A chance of rain and snow before 4pm, then a chance of snow. Seas 1 ft building to 3 ft.
Monday Night
E wind 10 to 15 kt decreasing to 5 to 10 kt after midnight. Rain and snow, becoming all rain after 3am. Seas 3 to 4 ft.
ESE wind 5 to 8 kt becoming S 20 to 25 kt. Winds could gust as high as 35 kt. Rain. Seas 4 ft building to 9 ft.
Tuesday Night
S wind 15 to 20 kt becoming W after midnight. Winds could gust as high as 25 kt. A chance of showers before 8pm. Seas 8 ft subsiding to 6 ft.
W wind around 20 kt, with gusts as high as 30 kt. Sunny. Seas 4 to 5 ft.
Wednesday Night
NW wind 15 to 20 kt, with gusts as high as 30 kt. Partly cloudy. Seas around 3 ft.
NW wind 15 to 20 kt. Mostly sunny. Seas 2 to 3 ft.
Thursday Night
NW wind 15 to 20 kt, with gusts as high as 30 kt. Mostly clear. Seas 2 to 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: 43.18°N 70.24°W
Last Update: 2:55 am EST Jan 22, 2018
Forecast Valid: 4am EST Jan 22, 2018-6pm EST Jan 28, 2018
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