Summer Heat Continues For Several Spots, While Severe Storms With Torrential Rainfall Will Threaten The Northeast into Mid-Atlantic Region

More summer heat is expected for parts of the West, South and Northeast before focusing over the southern Plains later this week. Excessive Heat Warnings are in effect for parts of the West, while Heat Advisories blanket each region. A strong cold front will clash with a hot, very moist air mass for afternoon/evening severe storms w/ high winds and intense rainfall from the Northeast to Mid-Atl.
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Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Tonight

    Heavy Rain

    SSW 10kt
    4ft

    Low: 66 °F

    Small Craft Advisory
    Small Craft Advisory

  • Wednesday

    Decreasing Clouds

    NW 10kt
    3ft

    High: 75 °F

  • Wednesday
    Night

    Mostly Clear

    N 10kt
    2-3ft

    Low: 62 °F

  • Thursday

    Sunny

    N 10kt
    2-3ft

    High: 69 °F

  • Thursday
    Night

    Mostly Clear

    S 10kt
    2ft

    Low: 63 °F

  • Friday

    Sunny

    S 10kt
    2ft

    High: 71 °F

  • Friday
    Night

    Mostly Clear

    SSW 10kt
    3ft

    Low: 64 °F

  • Saturday

    Sunny

    SSE 10kt
    2ft

    High: 70 °F

  • Saturday
    Night

    Partly Cloudy

    SE 10kt
    Waves Building4ft

    Low: 64 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:57 pm EDT Jul 17, 2018
Forecast Valid: 7pm EDT Jul 17, 2018-6pm EDT Jul 24, 2018

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Detailed Forecast


Synopsis: ANZ100-181015- 406 PM EDT Tue Jul 17 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... Southerly winds will strengthen ahead of a strong cold front which will move through the waters tonight. High pressure will begin to build into the region from the west on Wednesday...remaining over the northeast on Thursday and Friday. This high will push east into the Canadian maritimes this weekend with low pressure approaching the region from the west. $$

Tonight
SSW wind around 10 kt becoming WSW after midnight. Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms, mainly between midnight and 3am. Some of the storms could produce heavy rain. Areas of fog. Seas around 4 ft.
Wednesday
NW wind 5 to 10 kt becoming NE in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas around 3 ft.
Wednesday Night
N wind 5 to 10 kt. Mostly clear. Seas 2 to 3 ft.
Thursday
N wind 5 to 10 kt becoming SE in the afternoon. Sunny. Seas 2 to 3 ft.
Thursday Night
S wind 5 to 10 kt becoming WSW after midnight. Mostly clear. Seas around 2 ft.
Friday
WNW wind 5 to 10 kt becoming S in the afternoon. Sunny. Seas around 2 ft.
Friday Night
SSW wind 5 to 10 kt. Mostly clear. Seas around 3 ft.
Saturday
SSE wind 5 to 10 kt. Sunny. Seas around 2 ft.
Saturday Night
SE wind 5 to 10 kt. Partly cloudy. Seas 2 ft building to 4 ft.

Winds and seas higher in and near tstms.

*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: 5:57 pm EDT Jul 17, 2018
Forecast Valid: 7pm EDT Jul 17, 2018-6pm EDT Jul 24, 2018
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