Potent Southwest Storm with Heavy Mountain Snow and, Locally, Heavy Rain

Tropical moisture and cold Canadian air are combining in the Southwestern states to produce areas of, locally, heavy rain; and widespread heavy mountain snowfall. Flash flooding will be possible in, typically, dry washes of Arizona. Friday, this system moves into the Central U.S. and could produce heavy rain and flash flooding in the Mid-South.
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Gray/Portland, ME Local Forecast Office

8NM SE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Tonight

    Increasing Clouds

    Winds IncreasingSSW 15kt
    3-4ft

    Low: 43 °F

  • Friday

    Decreasing Clouds

    Winds IncreasingW 25kt
    3-4ft

    High: 54 °F

  • Friday
    Night

    Mostly Clear

    W 25kt
    3-4ft

    Low: 31 °F

    Gale Warning
    Gale Warning

  • Saturday

    Sunny

    W 20ktWinds Decreasing
    2-3ft

    High: 43 °F

  • Saturday
    Night

    Chance Rain

    WSW 10kt
    2ft

    Low: 36 °F

  • Sunday

    Rain/Snow Likely

    Winds IncreasingNE 15kt
    Waves Building4ft

    High: 44 °F

  • Sunday
    Night

    Chance Rain

    N 15kt
    4-5ft

    Low: 36 °F

  • Monday

    Mostly Sunny

    W 15kt
    4ftWaves Subsiding

    High: 45 °F

  • Monday
    Night

    Partly Cloudy

    W 15kt
    1-2ft

    Low: 36 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:51 pm EST Nov 21, 2019
Forecast Valid: 8pm EST Nov 21, 2019-6pm EST Nov 28, 2019

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Detailed Forecast


Synopsis: ANZ100-221330- 627 PM EST Thu Nov 21 2019 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... A strong cold front crosses the region Friday afternoon with gusty west winds to gale force in its wake. High pressure then moves over the waters on Saturday. Low pressure moves into the Gulf of Maine Sunday, followed by high pressure early next week. && $$

Tonight
WSW wind 5 to 8 kt becoming SSW 10 to 15 kt after midnight. Winds could gust as high as 25 kt. Increasing clouds. Seas 3 to 4 ft.
Friday
SW wind 15 to 20 kt becoming W 20 to 25 kt in the afternoon. Winds could gust as high as 30 kt. Cloudy, then gradually becoming mostly sunny. Seas 3 to 4 ft.
Friday Night
W wind 20 to 25 kt, with gusts as high as 35 kt. Mostly clear. Seas 3 to 4 ft.
Saturday
W wind 17 to 20 kt decreasing to 15 to 18 kt in the afternoon. Winds could gust as high as 25 kt. Sunny. Seas 2 to 3 ft.
Saturday Night
WSW wind around 10 kt becoming S after midnight. A chance of rain after 1am. Seas around 2 ft.
Sunday
E wind 10 to 13 kt becoming NE 12 to 15 kt in the afternoon. Winds could gust as high as 25 kt. Rain likely, possibly mixed with snow, becoming all rain after 7am. Seas 2 ft building to 4 ft.
Sunday Night
N wind around 15 kt becoming NW after midnight. Winds could gust as high as 25 kt. A chance of rain before 1am. Seas 4 to 5 ft.
Monday
W wind around 15 kt, with gusts as high as 20 kt. Mostly sunny. Seas 4 ft subsiding to 2 ft.
Monday Night
W wind 10 to 15 kt. Partly cloudy. Seas 1 to 2 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: 42.99°N 70.62°W
Last Update: 6:51 pm EST Nov 21, 2019
Forecast Valid: 8pm EST Nov 21, 2019-6pm EST Nov 28, 2019
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