Dangerous Heat Building in the West; Severe Storms in the Upper Midwest

A long duration heat wave will build across the Southwest, California, and Pacific Northwest. Dangerous heat is also forecast for the Great Basin and South Plains. Severe storms in the Upper Midwest may have locally heavy rain, damaging winds, and very large hail. Heavy rain and flooding will also be possible in the Deep South and Appalachians.
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For More Weather Information:

Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Overnight

    Partly Cloudy

    Light Wind
    1ft

    Low: 66 °F

  • Friday

    Mostly Sunny

    N 10kt
    2ft

    High: 72 °F

  • Friday
    Night

    Mostly Clear

    NNE 10kt
    2ft

    Low: 67 °F

  • Saturday

    Partly Sunny

    NE 15kt
    Waves Building5ft

    High: 69 °F

  • Saturday
    Night

    Mostly Cloudy

    ENE 10kt
    4ft

    Low: 64 °F

  • Sunday

    Mostly Cloudy

    NE 15kt
    5-6ft

    High: 69 °F

  • Sunday
    Night

    Chance Showers

    E 10kt
    6ft

    Low: 65 °F

  • Monday

    Chance Showers

    E 10kt
    6ft

    High: 70 °F

  • Monday
    Night

    Chance Showers

    E 10kt
    5-6ft

    Low: 64 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:04 am EDT Aug 14, 2020
Forecast Valid: 3am EDT Aug 14, 2020-6pm EDT Aug 20, 2020

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Detailed Forecast


Synopsis: ANZ100-141615- 1006 PM EDT Thu Aug 13 2020 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure builds out of northern Canada and into the Maritimes through the weekend. Increasing northeast winds as the high builds in may bring a window of gusts and building seas before a return to calmer weather. A slow moving frontal system will approach the waters by early next week. && $$

Overnight
Variable winds 5 kt or less. Partly cloudy. Seas around 1 ft.
Friday
N wind around 10 kt becoming ENE in the afternoon. Mostly sunny. Seas around 2 ft.
Friday Night
ENE wind 5 to 10 kt becoming NNE after midnight. Mostly clear. Seas around 2 ft.
Saturday
NE wind around 15 kt, with gusts as high as 25 kt. Partly sunny. Seas 3 ft building to 5 ft.
Saturday Night
ENE wind around 10 kt. Mostly cloudy. Seas around 4 ft.
Sunday
NE wind around 15 kt. Mostly cloudy. Seas 5 to 6 ft.
Sunday Night
E wind around 10 kt. A chance of showers after 3am. Seas around 6 ft.
Monday
E wind around 10 kt. A chance of showers. Seas around 6 ft.
Monday Night
E wind 5 to 10 kt becoming WNW after midnight. A chance of showers. Seas 5 to 6 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: 43.17°N 70.36°W
Last Update: 12:04 am EDT Aug 14, 2020
Forecast Valid: 3am EDT Aug 14, 2020-6pm EDT Aug 20, 2020
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