Blistering Heat Wave Across Southern Plains and Lower Mississippi Valley This Weekend; Wet Weather In The East

A scorching Heat Wave will continue across the southern tier of the country. Temperatures and Heat Indices will reach or easily surpass triple digits, as a ridge of high pressure dominates. Widespread Excessive Heat Warnings and Advisories are in effect, will persist and spread into the Southwest/CA next week. Meanwhile, locally heavy rain will be possible for the OH Valley/Mid-Atl/Northeast.
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Gray/Portland, ME Local Forecast Office

20NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Today

    Areas Fog

    Light Wind
    2ft

    High: 72 °F

  • Tonight

    Showers Likely

    E 15kt
    2-3ft

    Low: 63 °F

  • Sunday

    Heavy Rain

    Winds IncreasingSSE 15kt
    4-5ft

    High: 74 °F

  • Sunday
    Night

    Showers Likely

    S 20ktWinds Decreasing
    6ft

    Low: 68 °F

  • Monday

    Chance Showers

    S 15kt
    5ft

    High: 72 °F

  • Monday
    Night

    Mostly Cloudy

    S 15kt
    4-5ft

    Low: 68 °F

  • Tuesday

    Chance Thunderstorms

    S 15kt
    4ft

    High: 72 °F

  • Tuesday
    Night

    Partly Cloudy

    S 15kt
    4-5ft

    Low: 67 °F

  • Wednesday

    Partly Sunny

    S 15kt
    3ft

    High: 73 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:28 am EDT Jul 21, 2018
Forecast Valid: 10am EDT Jul 21, 2018-6pm EDT Jul 27, 2018

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Detailed Forecast


Synopsis: ANZ100-220030- 627 AM EDT Sat Jul 21 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure over the waters will drift east today. An area of low pressure with an associated warm front will approach from the south tonight and will lift north into the region on Sunday. A southerly warm and humid air mass will prevail behind the front early next week. $$

Today
Variable winds 5 kt or less. Areas of fog. Seas around 2 ft.
Tonight
E wind 10 to 15 kt. Showers likely, mainly after 4am. Areas of fog. Seas 2 to 3 ft.
Sunday
SSE wind 10 to 13 kt increasing to 12 to 15 kt in the afternoon. Winds could gust as high as 20 kt. Showers and possibly a thunderstorm before 1pm, then showers likely. Some of the storms could produce heavy rainfall. Areas of fog before 9am. Seas 4 to 5 ft.
Sunday Night
S wind 15 to 20 kt decreasing to 10 to 15 kt after midnight. Showers likely and possibly a thunderstorm before 3am, then a chance of showers. Seas around 6 ft.
Monday
S wind 10 to 15 kt. A chance of showers. Seas around 5 ft.
Monday Night
S wind 10 to 15 kt. Mostly cloudy. Seas 4 to 5 ft.
Tuesday
S wind 10 to 15 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms. Seas around 4 ft.
Tuesday Night
S wind 10 to 15 kt, with gusts as high as 20 kt. Partly cloudy. Seas 4 to 5 ft.
Wednesday
S wind around 15 kt, with gusts as high as 20 kt. Partly sunny. Seas around 3 ft.

Winds and seas higher in and near tstms.

*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: 7:28 am EDT Jul 21, 2018
Forecast Valid: 10am EDT Jul 21, 2018-6pm EDT Jul 27, 2018
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