Stormy Weather Along the East Coast; Extended Warm-up for the West

A strong low pressure system will bring heavy rain, gusty winds, and thunderstorms along the east coast. Isolated severe thunderstorms could produce damaging winds and a few tornadoes in the Southeast. Heavy rains may result in excessive runoff and flash flooding. Building high pressure out west will produce above normal temperatures, especially, in the Pacific Northwest.

For More Weather Information:

Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

  • Overnight


    SW 10kt

    Low: 41 °F

  • Tuesday


    S 15kt

    High: 53 °F

  • Tuesday

    Increasing Clouds

    S 15ktWinds Decreasing

    Low: 43 °F

  • Wednesday


    SE 15kt
    Waves Building4ft

    High: 48 °F

  • Wednesday


    SE 15kt
    Waves Building7ft

    Low: 45 °F

  • Thursday

    Showers Likely

    S 10kt

    High: 51 °F

  • Thursday

    Partly Cloudy

    SW 10kt

    Low: 45 °F

  • Friday

    Mostly Sunny

    WSW 10kt

    High: 52 °F

  • Friday

    Chance Showers

    S 10kt

    Low: 44 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:47 pm EDT Apr 23, 2018
Forecast Valid: 12am EDT Apr 24, 2018-6pm EDT Apr 30, 2018

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Detailed Forecast

Synopsis: ANZ100-241600- 947 PM EDT Mon Apr 23 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure shifts eastward into the Atlantic tonight. The next low pressure system will develop over the mid Atlantic coast on Tuesday, moving north toward New England on Wednesday with a cold front crossing the Gulf of Maine on Thursday. Brief high pressure brings quieter weather on Friday before the next frontal system arrives Saturday. $$

SW wind around 10 kt. Clear. Seas around 2 ft.
SW wind 10 to 15 kt becoming S in the afternoon. Winds could gust as high as 20 kt. Sunny. Seas around 2 ft.
Tuesday Night
S wind 12 to 15 kt decreasing to 10 to 13 kt after midnight. Winds could gust as high as 25 kt. Increasing clouds. Seas 3 to 4 ft.
SE wind 10 to 15 kt. Rain, mainly after 9am. Patchy fog after noon. Seas 2 ft building to 4 ft.
Wednesday Night
SE wind 10 to 15 kt, with gusts as high as 25 kt. Rain. Patchy fog. Seas 5 ft building to 7 ft.
S wind around 10 kt. Showers likely, mainly before 7am. Patchy fog before 9am. Seas around 7 ft.
Thursday Night
SW wind around 10 kt. Partly cloudy. Seas around 6 ft.
WSW wind around 10 kt becoming S in the afternoon. Mostly sunny. Seas around 5 ft.
Friday Night
S wind 5 to 10 kt. A chance of showers. Seas 4 to 5 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: 9:47 pm EDT Apr 23, 2018
Forecast Valid: 12am EDT Apr 24, 2018-6pm EDT Apr 30, 2018
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