Heavy Rainfall, Flooding, And Severe Thunderstorm Threats From The Mid South To The Great Lakes Today And Tonight

A slow moving low pressure system and cold front will bring the potential for severe thunderstorms capable of producing damaging winds and isolated tornadoes from portions of the Mid South to the Midwest and Great Lakes today and tonight. Heavy rainfall could also lead to flooding concerns. The severe weather threat will shift to the Mid Atlantic and Northeast on Wednesday.
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Gray/Portland, ME Local Forecast Office

18NM S Portland ME

Marine Point Forecast

[NOTICE]
  • Late
    Afternoon

    Rain

    SE 20kt
    6ft

    High: 62 °F

  • Tonight

    Rain

    SE 25ktWinds Decreasing
    Waves Building10ft

    Low: 62 °F

    Gale Warning
    Gale Warning

  • Wednesday

    Severe Thunderstorms

    S 20kt
    6ft

    High: 66 °F

  • Wednesday
    Night

    Severe Thunderstorms

    SSW 15kt
    6-7ft

    Low: 57 °F

  • Thursday

    Mostly Sunny

    N 15ktWinds Decreasing
    4-5ft

    High: 63 °F

  • Thursday
    Night

    Partly Cloudy

    Light Wind
    3ft

    Low: 53 °F

  • Friday

    Partly Sunny

    Light Wind
    3ft

    High: 64 °F

  • Friday
    Night

    Partly Cloudy

    Light Wind
    3ft

    Low: 56 °F

  • Saturday

    Sunny

    WSW 10kt
    3ft

    High: 64 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:04 pm EDT Sep 25, 2018
Forecast Valid: 5pm EDT Sep 25, 2018-6pm EDT Oct 2, 2018

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Detailed Forecast


Synopsis: ANZ100-260915- 314 PM EDT Tue Sep 25 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... A warm front will lift into northern Maine tonight. Low pressure will move northeast through central Quebec on Wednesday and will drive a trailing cold front through the region Wednesday night. High pressure will build in from the west on Thursday and will hold over the area on Friday. && $$

Late Afternoon
SE wind around 20 kt, with gusts as high as 25 kt. Rain. Seas around 6 ft.
Tonight
SE wind 20 to 25 kt becoming S 15 to 20 kt after midnight. Winds could gust as high as 35 kt. Rain, mainly before 3am. Areas of fog after 7pm. Seas 8 ft building to 10 ft.
Wednesday
S wind 15 to 20 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 1pm. Some of the storms could be severe. Seas around 6 ft.
Wednesday Night
SSW wind 10 to 15 kt becoming W after midnight. Winds could gust as high as 25 kt. Showers and thunderstorms likely before 1am, then a chance of showers between 1am and 5am. Some storms could be severe, with damaging winds. Seas 6 to 7 ft.
Thursday
N wind 10 to 15 kt becoming NE 5 to 8 kt in the afternoon. Mostly sunny. Seas 4 to 5 ft.
Thursday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 3 ft.
Friday
Variable winds 5 kt or less. Partly sunny. Seas around 3 ft.
Friday Night
Variable winds 5 kt or less. Partly cloudy. Seas around 3 ft.
Saturday
WSW wind around 10 kt. Sunny. 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: 43.36°N 70.28°W
Last Update: 3:04 pm EDT Sep 25, 2018
Forecast Valid: 5pm EDT Sep 25, 2018-6pm EDT Oct 2, 2018
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