Heavy Rainfall and Flash Flood Threats Shift From Southern Plains to Lower Mississippi Valley; Elevated to Critical Fire Concerns Out West

Heavy to excessive rainfall with flash flood concerns will shift from the southern Plains into the Lower Mississippi Valley. Elevated to Critical Fire weather threats will linger through the weekend across the Great Basin and central Rockies. Finally, Major to Record river flooding will continue in portions of the Midwest and across parts of North and South Carolina this weekend.

For More Weather Information:

Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

  • Today

    Mostly Sunny

    N 15kt
    4ftWaves Subsiding

    High: 71 °F

    Small Craft Advisory
    Small Craft Advisory

  • Tonight

    Partly Cloudy

    Light Wind

    Low: 45 °F

  • Sunday

    Mostly Sunny

    Light Wind

    High: 63 °F

  • Sunday

    Partly Cloudy

    Winds IncreasingNNE 15kt
    Waves Building3ft

    Low: 49 °F

  • Monday


    ENE 15ktWinds Decreasing

    High: 54 °F

  • Monday

    Mostly Clear

    E 10kt

    Low: 51 °F

  • Tuesday

    Chance Showers

    ESE 15kt

    High: 63 °F

  • Tuesday

    Showers Likely

    S 15kt

    Low: 62 °F

  • Wednesday

    Showers Likely

    S 15kt

    High: 69 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:21 am EDT Sep 22, 2018
Forecast Valid: 10am EDT Sep 22, 2018-6pm EDT Sep 28, 2018

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Detailed Forecast

Synopsis: ANZ100-230230- 825 AM EDT Sat Sep 22 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure will build in from the west today and will crest over the region tonight. A cold front will drop south through the region on Sunday followed by another area of high pressure Sunday night. High pressure will crest over the region early Monday before shifting east. High pressure will continue to slide off to the east Monday night. A warm front will approach from the southwest on Tuesday and will lift into the region Tuesday night. A cold front will gradually push in from the west Wednesday night and will shift offshore on Thursday. && $$

N wind 10 to 15 kt, with gusts as high as 25 kt. Mostly sunny. Seas 4 ft subsiding to 2 ft.
Variable winds 5 kt or less. Partly cloudy. Seas 1 to 2 ft.
Variable winds 5 kt or less. Mostly sunny. Seas around 1 ft.
Sunday Night
SW wind 5 to 8 kt becoming NNE 10 to 15 kt in the evening. Winds could gust as high as 25 kt. Partly cloudy. Seas 1 ft building to 3 ft.
ENE wind 12 to 15 kt decreasing to 10 to 13 kt in the afternoon. Winds could gust as high as 25 kt. Sunny. Seas around 5 ft.
Monday Night
E wind around 10 kt. Mostly clear. Seas 3 to 4 ft.
ESE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers after 2pm. Seas around 3 ft.
Tuesday Night
S wind around 15 kt, with gusts as high as 25 kt. Showers likely. Seas 4 to 5 ft.
S wind around 15 kt, with gusts as high as 20 kt. Showers likely. Seas around 6 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: 9:21 am EDT Sep 22, 2018
Forecast Valid: 10am EDT Sep 22, 2018-6pm EDT Sep 28, 2018
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