Heavy Rainfall Threat to the South from Possible Tropical/Subtropical System Over the Weekend

A tropical disturbance over the Yucatan Peninsula has a High chance of developing into a tropical or subtropical depression in the Gulf over the Memorial Day Weekend. This system has the potential to bring heavy rainfall to portions of the Gulf Coast over the next 5-7 days. The threat of rip currents will also steadily increase along the Gulf from FL to LA over the holiday weekend.
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Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • This
    Afternoon

    Sunny

    WSW 15kt
    3-4ft

    High: 68 °F

    Small Craft Advisory
    Small Craft Advisory

  • Tonight

    Mostly Cloudy

    WSW 15kt
    3ft

    Low: 57 °F

    Small Craft Advisory
    Small Craft Advisory

  • Saturday

    Chance Thunderstorms

    WSW 10ktWinds Decreasing
    2-3ft

    High: 66 °F

  • Saturday
    Night

    Chance Thunderstorms

    E 15kt
    3ft

    Low: 51 °F

  • Sunday

    Thunderstorms Likely

    E 15kt
    Waves Building5ft

    High: 53 °F

  • Sunday
    Night

    Chance Thunderstorms

    ENE 15kt
    5-6ft

    Low: 50 °F

  • Memorial
    Day

    Chance Thunderstorms

    ENE 10kt
    5ft

    High: 55 °F

  • Monday
    Night

    Chance Thunderstorms

    Light Wind
    4ft

    Low: 52 °F

  • Tuesday

    Areas Fog

    Light Wind
    3-4ft

    High: 66 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:39 am EDT May 25, 2018
Forecast Valid: 12pm EDT May 25, 2018-6pm EDT May 31, 2018

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Detailed Forecast


Synopsis: ANZ100-260430- 1025 AM EDT Fri May 25 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure will cross the waters today with an increasing southerly flow. A backdoor cold front will move southward across the waters over the weekend. A weak disturbance will cross the region early next week. $$

This Afternoon
WSW wind around 15 kt, with gusts as high as 20 kt. Sunny. Seas 3 to 4 ft.
Tonight
WSW wind 10 to 15 kt, with gusts as high as 20 kt. Mostly cloudy. Seas around 3 ft.
Saturday
WSW wind 7 to 10 kt becoming SW 5 to 8 kt in the afternoon. A chance of showers and thunderstorms after 3pm. Seas 2 to 3 ft.
Saturday Night
E wind 10 to 15 kt. A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and 10pm, then a chance of showers after 10pm. Seas around 3 ft.
Sunday
E wind around 15 kt, with gusts as high as 25 kt. Showers and thunderstorms likely before 10am, then showers likely between 10am and 3pm, then showers and thunderstorms likely after 3pm. Seas 3 ft building to 5 ft.
Sunday Night
ENE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Patchy fog. Seas 5 to 6 ft.
Memorial Day
ENE wind 5 to 10 kt. A chance of rain and thunderstorms. Patchy fog. Seas around 5 ft.
Monday Night
Variable winds 5 kt or less. A chance of showers and thunderstorms. Patchy fog. Seas around 4 ft.
Tuesday
Variable winds 5 kt or less. Areas of fog before 9am. Seas 3 to 4 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: 43.17°N 70.36°W
Last Update: 9:39 am EDT May 25, 2018
Forecast Valid: 12pm EDT May 25, 2018-6pm EDT May 31, 2018
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