Enhanced Risk for Severe Thunderstorms Across the Upper Midwest; Flash Flooding Possible from the Upper Midwest to Southern Plains and Desert Southwest Through Friday

Portions of the Upper Midwest will see an increased threat for severe thunderstorms through this evening, with a few strong tornadoes possible. The same region remains on alert for additional flash flood concerns. Heavy rainfall may lead to flash flooding across the Desert Southwest today, and Southern Plains by Friday. Finally, Major-to-record river flooding continues across the Carolinas.
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Gray/Portland, ME Local Forecast Office

5NM E Portland ME

Marine Point Forecast

[NOTICE]
  • Tonight

    Chance Drizzle

    SE 10km/hWinds Decreasing
    1m

    Low: 14 °C

  • Friday

    Chance Drizzle

    Winds IncreasingS 25km/h
    1m

    High: 19 °C

    Small Craft Advisory
    Small Craft Advisory

  • Friday
    Night

    Showers Likely

    SSW 30km/h
    1m

    Low: 17 °C

    Small Craft Advisory
    Small Craft Advisory

  • Saturday

    Mostly Sunny

    NNW 20km/h
    1m

    High: 18 °C

  • Saturday
    Night

    Partly Cloudy

    N 10km/h
    < 1m

    Low: 11 °C

  • Sunday

    Mostly Sunny

    N 10km/h
    < 1m

    High: 17 °C

  • Sunday
    Night

    Mostly Clear

    Winds IncreasingNNE 15km/h
    < 1m

    Low: 9 °C

  • Monday

    Sunny

    NE 20km/hWinds Decreasing
    1m

    High: 13 °C

  • Monday
    Night

    Mostly Clear

    E 10km/h
    < 1m

    Low: 10 °C


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:35 pm EDT Sep 20, 2018
Forecast Valid: 4pm EDT Sep 20, 2018-6pm EDT Sep 27, 2018

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH

Synopsis: ANZ100-210845- 245 PM EDT Thu Sep 20 2018 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... High pressure over the region will slowly retreat into the maritimes through tonight. An increasing south to southwest flow will develop in advance of an approaching strong cold front. The front will pass across the waters late Friday night with north to northwest winds behind the front. High pressure builds across the waters over the weekend allowing winds to diminish and become light. && $$

Tonight
SE wind 7 to 10 km/h becoming S 5 to 8 km/h after midnight. A chance of drizzle after 11pm. Patchy fog after 11pm. Seas around 1 m.
Friday
S wind 10 to 15 km/h increasing to 20 to 25 km/h. Winds could gust as high as 40 km/h. A chance of drizzle before 9am. Patchy fog before 9am. Seas around 1 m.
Friday Night
SSW wind 25 to 30 km/h, with gusts as high as 50 km/h. Showers likely and possibly a thunderstorm, mainly after 5am. Some of the storms could produce gusty winds. Seas around 1 m.
Saturday
NNW wind 15 to 20 km/h. Mostly sunny. Seas around 1 m.
Saturday Night
N wind around 10 km/h. Partly cloudy. Seas 1 m or less.
Sunday
N wind around 10 km/h becoming SW in the afternoon. Mostly sunny. Seas 1 m or less.
Sunday Night
SW wind 5 to 8 km/h becoming NNE 10 to 15 km/h in the evening. Mostly clear. Seas 1 m or less.
Monday
NE wind 17 to 20 km/h becoming E 15 to 18 km/h in the afternoon. Sunny. Seas around 1 m.
Monday Night
E wind around 10 km/h. Mostly clear. Seas 1 m or less.

*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: 43.67°N 70.14°W
Last Update: 2:35 pm EDT Sep 20, 2018
Forecast Valid: 4pm EDT Sep 20, 2018-6pm EDT Sep 27, 2018
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