Thunderstorms and Flooding Along the Gulf Coast; Winter Returns in the Central Rockies

A stalled front along the west-central Gulf Coast will contribute to a few severe thunderstorms and heavy rain with flooding over the next couple of days. Meanwhile, a vigorous system will produce heavy snow across the central Rockies into the High Plains the next few days. Finally, critical fire weather conditions are expected across the Four Corners region through Thursday.
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Gray/Portland, ME Local Forecast Office

10NM S Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Today

    Slight Chc Rain

    Winds IncreasingESE 10kt
    3ft

    High: 47 °F

  • Tonight

    Rain

    ENE 15kt
    Waves Building5ft

    Low: 39 °F

  • Friday

    Rain

    ENE 25kt
    Waves Building8ft

    High: 42 °F

  • Friday
    Night

    Rain/Snow

    NNE 25kt
    8-9ft

    Low: 36 °F

  • Saturday

    Chance Rain/Snow

    N 15kt
    7ft

    High: 45 °F

  • Saturday
    Night

    Mostly Cloudy

    Light Wind
    5-6ft

    Low: 39 °F

  • Sunday

    Partly Sunny

    Light Wind
    3-4ft

    High: 48 °F

  • Sunday
    Night

    Mostly Cloudy

    Light Wind
    3ft

    Low: 42 °F

  • Monday

    Mostly Sunny

    Light Wind
    2ft

    High: 54 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:41 am EDT Apr 15, 2021
Forecast Valid: 6am EDT Apr 15, 2021-6pm EDT Apr 21, 2021

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Detailed Forecast


Synopsis: ANZ100-152130- 324 AM EDT Thu Apr 15 2021 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... Low pressure emerges off the Mid Atlantic coast today and tracks toward Cape Cod tonight. As it does so, an east to northeast wind will strengthen across the Gulf of Maine. Low pressure stalls near Cape Cod on Friday before pulling away on Saturday. Expect lighter winds through early next week as broad high pressure moves through the area. $$

Today
ESE wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. A slight chance of rain after 4pm. Seas around 3 ft.
Tonight
ENE wind 10 to 15 kt, with gusts as high as 25 kt. Rain, mainly after 10pm. Seas 3 ft building to 5 ft.
Friday
ENE wind around 25 kt, with gusts as high as 35 kt. Rain. Seas 6 ft building to 8 ft.
Friday Night
NNE wind 20 to 25 kt, with gusts as high as 30 kt. Rain before 5am, then a chance of rain and snow. Seas 8 to 9 ft.
Saturday
N wind 10 to 15 kt, with gusts as high as 20 kt. A chance of rain and snow before 7am, then a chance of rain between 7am and 2pm. Seas around 7 ft.
Saturday Night
Variable winds 5 kt or less. Mostly cloudy. Seas 5 to 6 ft.
Sunday
Variable winds 5 kt or less. Partly sunny. Seas 3 to 4 ft.
Sunday Night
Variable winds 5 kt or less. Mostly cloudy. Seas around 3 ft.
Monday
Variable winds 5 kt or less. Mostly sunny. Seas around 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: 42.89°N 70.76°W
Last Update: 4:41 am EDT Apr 15, 2021
Forecast Valid: 6am EDT Apr 15, 2021-6pm EDT Apr 21, 2021
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