Heavy Rainfall And Flooding Threat Gradually Shifts From The Western Gulf Coast To The Mid Mississippi and Ohio Valleys and Mid-Atlantic Region; Excessive Heat Consumes Desert Southwest.

A low pressure system will advance slowly south and west from south TX into Mexico, which will gradually curtail the torrential rainfall and flooding in south/southeast TX. Focus for heavy flooding rain will shift to the Mid MS/Ohio Valleys and Mid-Atlantic, as an area of low pressure tracks very slowly along a moist stationary front. Finally, Heat will be the word in parts of CA and Southwest.
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Gray/Portland, ME Local Forecast Office

25NM ENE Portsmouth NH

Marine Point Forecast

[NOTICE]
  • This
    Afternoon

    Partly Sunny

    E 10km/h
    1m

    High: 19 °C

  • Tonight

    Mostly Clear

    Winds IncreasingN 15km/h
    < 1m

    Low: 13 °C

  • Friday

    Sunny

    ENE 25km/hWinds Decreasing
    < 1m

    High: 18 °C

  • Friday
    Night

    Increasing Clouds

    S 15km/h
    1m

    Low: 13 °C

  • Saturday

    Chance Showers

    Winds IncreasingS 20km/h
    1m

    High: 16 °C

  • Saturday
    Night

    Showers

    S 20km/hWinds Decreasing
    1m

    Low: 14 °C

  • Sunday

    Showers

    SW 15km/h
    1m

    High: 18 °C

  • Sunday
    Night

    Chance Showers

    W 15km/h
    1m

    Low: 15 °C

  • Monday

    Chance Showers

    N 20km/h
    1m

    High: 17 °C


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:31 am EDT Jun 21, 2018
Forecast Valid: 1pm EDT Jun 21, 2018-6pm EDT Jun 27, 2018

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Detailed Forecast


Synopsis: ANZ100-220345- 931 AM EDT Thu Jun 21 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure builds into the region through Friday with fair weather. Low pressure approaches from the west early on Saturday with the potential for showers and perhaps thunder Saturday afternoon through Sunday night. High pressure then builds in later Monday. $$

This Afternoon
NNE wind around 10 km/h becoming E. Partly sunny. Seas around 1 m.
Tonight
ESE wind 10 to 13 km/h becoming N 12 to 15 km/h after midnight. Mostly clear. Seas 1 m or less.
Friday
ENE wind 20 to 25 km/h becoming ESE 10 to 15 km/h in the afternoon. Winds could gust as high as 30 km/h. Sunny. Seas 1 m or less.
Friday Night
S wind around 15 km/h. Increasing clouds. Seas around 1 m.
Saturday
S wind 10 to 15 km/h increasing to 15 to 20 km/h in the afternoon. A chance of showers after noon. Seas around 1 m.
Saturday Night
S wind 15 to 20 km/h becoming S 10 to 15 km/h after midnight. Showers. Seas around 1 m.
Sunday
SW wind around 15 km/h. Showers, mainly before 9am. Seas around 1 m.
Sunday Night
SW wind around 15 km/h becoming NW after midnight. A chance of showers. Seas around 1 m.
Monday
N wind around 20 km/h. A chance of showers. Seas around 1 m.

*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: 9:31 am EDT Jun 21, 2018
Forecast Valid: 1pm EDT Jun 21, 2018-6pm EDT Jun 27, 2018
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