Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation.
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Hazardous Weather Conditions

For More Weather Information:

Gray/Portland, ME Local Forecast Office

18NM ENE Rockland ME

Marine Point Forecast

[NOTICE]
  • Today

    Sunny

    NE 20km/h
    < 1m

    High: 19 °C

  • Tonight

    Partly Cloudy

    SE 10km/hWinds Decreasing
    < 1m

    Low: 13 °C

  • Friday

    Partly Sunny

    Winds IncreasingS 15km/h
    < 1m

    High: 21 °C

  • Friday
    Night

    Areas Fog

    SW 15km/h
    < 1m

    Low: 18 °C

  • Saturday

    Areas Fog

    Winds IncreasingSW 20km/h
    < 1m

    High: 26 °C

  • Saturday
    Night

    Partly Cloudy

    WSW 15km/h
    < 1m

    Low: 18 °C

  • Sunday

    Chance Thunderstorms

    SW 10km/h
    < 1m

    High: 24 °C

  • Sunday
    Night

    Mostly Cloudy

    SW 10km/h
    < 1m

    Low: 17 °C

  • Monday

    Partly Sunny

    NNW 10km/h
    < 1m

    High: 22 °C


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:03 am EDT Jul 18, 2019
Forecast Valid: 9am EDT Jul 18, 2019-6pm EDT Jul 24, 2019

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Detailed Forecast


Synopsis: ANZ100-182145- 342 AM EDT Thu Jul 18 2019 .Synopsis for Stonington ME to Merrimack River MA out to 25 NM... A cold front will stall over southern New England today as high pressure builds in from the north. High pressure will slide off to the east this afternoon. A warm front will lift northeast through the region Friday into Saturday morning. A cold front will approach from the north on Saturday and will slowly drop south through Sunday and Sunday night with an additional frontal passage on its heels. High pressure will gradually build in from the west Monday through Tuesday. && $$

Today
NE wind 15 to 20 km/h becoming ESE in the afternoon. Winds could gust as high as 30 km/h. Sunny. Seas 1 m or less.
Tonight
SE wind 7 to 10 km/h becoming ESE 5 to 8 km/h after midnight. Partly cloudy. Seas 1 m or less.
Friday
ESE wind 5 to 8 km/h becoming S 10 to 15 km/h in the morning. Partly sunny. Seas 1 m or less.
Friday Night
SW wind 10 to 15 km/h. Areas of fog after 2am. Seas 1 m or less.
Saturday
SW wind 10 to 15 km/h increasing to 15 to 20 km/h in the afternoon. Winds could gust as high as 30 km/h. Areas of fog before 8am. Seas 1 m or less.
Saturday Night
WSW wind 10 to 15 km/h. Partly cloudy. Seas 1 m or less.
Sunday
WNW wind around 10 km/h becoming SSW in the afternoon. A chance of showers and thunderstorms. Seas 1 m or less.
Sunday Night
SW wind around 10 km/h becoming NW after midnight. Mostly cloudy. Seas 1 m or less.
Monday
NNW wind around 10 km/h becoming SW in the afternoon. Partly sunny. Seas 1 m or less.

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: 44.2°N 68.72°W
Last Update: 6:03 am EDT Jul 18, 2019
Forecast Valid: 9am EDT Jul 18, 2019-6pm EDT Jul 24, 2019
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