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.
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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Tonight

    Mostly Cloudy

    Light Wind
    1ft

    Low: 35 °F

  • Monday

    Chance Rain

    Winds IncreasingLight Wind
    1ft

    High: 40 °F

  • Monday
    Night

    Rain/Snow Likely

    ESE 10kt
    2-3ft

    Low: 36 °F

  • Tuesday

    Rain

    Winds IncreasingS 30kt
    Waves Building8ft

    High: 47 °F

  • Tuesday
    Night

    Chance Showers

    SSW 20kt
    9ftWaves Subsiding

    Low: 37 °F

  • Wednesday

    Sunny

    W 20kt
    5-6ft

    High: 39 °F

  • Wednesday
    Night

    Partly Cloudy

    NW 20kt
    5ftWaves Subsiding

    Low: 21 °F

  • Thursday

    Mostly Sunny

    NW 20kt
    3ft

    High: 25 °F

  • Thursday
    Night

    Mostly Clear

    NW 20kt
    3ft

    Low: 17 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:20 pm EST Jan 21, 2018
Forecast Valid: 8pm EST Jan 21, 2018-6pm EST Jan 28, 2018

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Detailed Forecast


Synopsis: ANZ100-221400- 656 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. $$

Tonight
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Monday
Variable winds 5 kt or less. A chance of rain after 1pm. Seas around 1 ft.
Monday Night
E wind around 10 kt becoming SSW after midnight. Rain and snow likely, becoming all rain after 1am. Seas 2 to 3 ft.
Tuesday
ESE wind 10 to 15 kt becoming S 25 to 30 kt. Winds could gust as high as 40 kt. Rain. Seas 4 ft building to 8 ft.
Tuesday Night
SSW wind 15 to 20 kt becoming WSW after midnight. Winds could gust as high as 30 kt. A chance of showers before 9pm. Seas 9 ft subsiding to 7 ft.
Wednesday
W wind around 20 kt, with gusts as high as 30 kt. Sunny. Seas 5 to 6 ft.
Wednesday Night
NW wind 15 to 20 kt, with gusts as high as 30 kt. Partly cloudy. Seas 5 ft subsiding to 3 ft.
Thursday
NW wind 15 to 20 kt, with gusts as high as 25 kt. Mostly sunny. Seas around 3 ft.
Thursday Night
NW wind 15 to 20 kt, with gusts as high as 30 kt. Mostly clear. Seas around 3 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: 43.18°N 70.24°W
Last Update: 6:20 pm EST Jan 21, 2018
Forecast Valid: 8pm EST Jan 21, 2018-6pm EST Jan 28, 2018
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