Heavy Rains and Catastrophic Flooding Possible in Hawaii

A kona low will continue to bring heavy rain to Hawaii bringing flooding and flash flooding, landslides, road closures, and low visibility with high rainfall rates expected. Lake effect snow is expected downwind from the Great Lakes. Blizzard conditions are expected in the southeast Alaska.
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Gray/Portland, ME Local Forecast Office

9NM ESE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Today

    Sunny

    W 15kt
    3-4ft

    High: 40 °F

  • Tonight

    Increasing Clouds

    WNW 10kt
    2ft

    Low: 33 °F

  • Wednesday

    Rain/Snow Likely

    Winds IncreasingNNE 10kt
    1-2ft

    High: 37 °F

  • Wednesday
    Night

    Rain/Snow

    N 15kt
    2ft

    Low: 29 °F

  • Thursday

    Chance Snow

    NW 15kt
    2ft

    High: 36 °F

  • Thursday
    Night

    Mostly Cloudy

    NNW 10kt
    1-2ft

    Low: 31 °F

  • Friday

    Cloudy

    S 10kt
    2ft

    High: 45 °F

  • Friday
    Night

    Chance Rain

    SSW 10kt
    2ft

    Low: 41 °F

  • Saturday

    Chance Showers

    Winds IncreasingSSW 15kt
    2-3ft

    High: 56 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:59 am EST Dec 7, 2021
Forecast Valid: 10am EST Dec 7, 2021-6pm EST Dec 13, 2021

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Detailed Forecast


Synopsis: ANZ100-080215- 701 AM EST Tue Dec 7 2021 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure drifts overhead today, with winds gradually diminishing. Another storm system will track towards the region mid- week. High pressure crests the waters Thursday night. Southerly winds increase ahead of an approaching front Saturday. This front will be slow to cross the east coast this weekend. $$

Today
W wind 10 to 15 kt, with gusts as high as 20 kt. Sunny. Seas 3 to 4 ft.
Tonight
WNW wind 5 to 10 kt becoming N after midnight. Increasing clouds. Seas around 2 ft.
Wednesday
NNE wind 5 to 8 kt increasing to 7 to 10 kt in the afternoon. A chance of rain and snow showers before noon, then rain and snow likely. Seas 1 to 2 ft.
Wednesday Night
N wind around 15 kt becoming NNW after midnight. Winds could gust as high as 25 kt. Rain and snow, becoming all snow after 10pm. Seas around 2 ft.
Thursday
NW wind 10 to 15 kt. A chance of snow showers before 8am. Seas around 2 ft.
Thursday Night
NNW wind 5 to 10 kt becoming SE after midnight. Mostly cloudy. Seas 1 to 2 ft.
Friday
S wind around 10 kt. Cloudy. Seas around 2 ft.
Friday Night
SSW wind around 10 kt becoming WSW in the evening. A chance of rain. Seas around 2 ft.
Saturday
SSW wind 10 to 13 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 25 kt. A chance of showers. Seas 2 to 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: 42.99°N 70.62°W
Last Update: 6:59 am EST Dec 7, 2021
Forecast Valid: 10am EST Dec 7, 2021-6pm EST Dec 13, 2021
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