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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For More Weather Information:

Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Tonight

    Rain

    SE 45km/hWinds Decreasing
    2-3m

    Low: 17 °C

    Gale Warning
    Gale Warning

  • Wednesday

    Chance Rain

    Winds IncreasingS 35km/h
    2m

    High: 19 °C

  • Wednesday
    Night

    Severe Thunderstorms

    SSW 35km/hWinds Decreasing
    2m

    Low: 14 °C

  • Thursday

    Mostly Sunny

    N 25km/hWinds Decreasing
    1-2m

    High: 17 °C

  • Thursday
    Night

    Partly Cloudy

    ESE 10km/h
    1m

    Low: 12 °C

  • Friday

    Partly Sunny

    E 10km/h
    1m

    High: 18 °C

  • Friday
    Night

    Partly Cloudy

    SW 15km/h
    1m

    Low: 14 °C

  • Saturday

    Sunny

    W 15km/h
    1m

    High: 18 °C

  • Saturday
    Night

    Mostly Clear

    NNW 20km/h
    1m

    Low: 14 °C


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: 6pm 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. && $$

Tonight
SE wind 40 to 45 km/h becoming S 30 to 35 km/h. Winds could gust as high as 65 km/h. Rain, mainly before 2am. Areas of fog after 7pm. Seas 2 to 3 m.
Wednesday
S wind 25 to 30 km/h increasing to 30 to 35 km/h in the afternoon. Winds could gust as high as 50 km/h. A chance of rain or drizzle before 8am. Seas around 2 m.
Wednesday Night
SSW wind 30 to 35 km/h becoming WSW 25 to 30 km/h after midnight. Winds could gust as high as 45 km/h. A chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 5am. Some storms could be severe, with damaging winds. Seas around 2 m.
Thursday
N wind 20 to 25 km/h becoming NE 15 to 20 km/h in the afternoon. Winds could gust as high as 40 km/h. Mostly sunny. Seas 1 to 2 m.
Thursday Night
ESE wind around 10 km/h becoming ENE after midnight. Partly cloudy. Seas around 1 m.
Friday
E wind around 10 km/h becoming SE in the afternoon. Partly sunny. Seas around 1 m.
Friday Night
S wind around 15 km/h becoming WSW after midnight. Partly cloudy. Seas around 1 m.
Saturday
W wind around 15 km/h becoming WSW in the afternoon. Sunny. Seas around 1 m.
Saturday Night
NNW wind around 20 km/h. Mostly clear. Seas around 1 m.

*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: 3:04 pm EDT Sep 25, 2018
Forecast Valid: 6pm EDT Sep 25, 2018-6pm EDT Oct 2, 2018
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