Very Dangerous Heat Wave Impacting the Southern Plains and Spreading Eastward

A blazing heat wave will consume much of the southern Plains and lower Mississippi River Valley through early next week, especially in Texas. Expect record highs temperatures and very dangerous heat indices, both surging well over 100 degrees. Click the link to the right for more info on how to keep you, your family/pets, and friends safe during the summer heat.
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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • Overnight

    Clear

    N 10kt
    3ft

    Low: 59 °F

  • Thursday

    Sunny

    NNE 10kt
    2-3ft

    High: 71 °F

  • Thursday
    Night

    Clear

    SW 10kt
    2ft

    Low: 60 °F

  • Friday

    Sunny

    Winds IncreasingS 10kt
    2ft

    High: 68 °F

  • Friday
    Night

    Mostly Clear

    S 10kt
    2-3ft

    Low: 62 °F

  • Saturday

    Mostly Sunny

    E 10kt
    2-3ft

    High: 69 °F

  • Saturday
    Night

    Showers Likely

    E 10kt
    3-4ft

    Low: 63 °F

  • Sunday

    Thunderstorms

    SE 15kt
    5-6ft

    High: 70 °F

  • Sunday
    Night

    Showers Likely

    S 15kt
    4-5ft

    Low: 67 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:19 am EDT Jul 19, 2018
Forecast Valid: 4am EDT Jul 19, 2018-6pm EDT Jul 25, 2018

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Detailed Forecast


Synopsis: ANZ100-192130- 330 AM EDT Thu Jul 19 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure will crest over the region today and will shift offshore overnight. High pressure will hold offshore Friday through Saturday. A warm front will approach from the south Saturday night and will lift north into the region on Sunday. A warm and humid air mass will prevail behind the front early next week. $$

Overnight
N wind around 10 kt. Clear. Seas around 3 ft.
Thursday
NNE wind 5 to 10 kt becoming SSE in the afternoon. Sunny. Seas 2 to 3 ft.
Thursday Night
S wind 5 to 10 kt becoming W after midnight. Clear. Seas around 2 ft.
Friday
Variable winds less than 5 kt becoming S 5 to 10 kt in the afternoon. Sunny. Seas around 2 ft.
Friday Night
S wind 5 to 10 kt. Mostly clear. Seas 2 to 3 ft.
Saturday
E wind 5 to 10 kt. Mostly sunny. Seas 2 to 3 ft.
Saturday Night
E wind around 10 kt. Showers likely, mainly after 2am. Areas of fog. Seas 3 to 4 ft.
Sunday
E wind around 15 kt becoming SE in the afternoon. Winds could gust as high as 25 kt. Rain and thunderstorms. Areas of fog. Seas 5 to 6 ft.
Sunday Night
S wind 10 to 15 kt. Showers likely and possibly a thunderstorm. Seas 4 to 5 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: 43.18°N 70.24°W
Last Update: 3:19 am EDT Jul 19, 2018
Forecast Valid: 4am EDT Jul 19, 2018-6pm EDT Jul 25, 2018
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