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

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Marquette, MI Local Forecast Office

Copper Harbor MI

Marine Point Forecast

[NOTICE]
  • Today

    Slight Chc Thunderstorms

    SW 15km/h
    < 1m

    High: 20 °C

  • Tonight

    Chance Thunderstorms

    SSW 15km/h
    < 1m

    Low: 14 °C

  • Friday

    Patchy Fog

    W 20km/h
    < 1m

    High: 20 °C

  • Friday
    Night

    Slight Chc Thunderstorms

    Winds IncreasingW 20km/h
    < 1m

    Low: 13 °C

  • Saturday

    Mostly Sunny

    W 20km/h
    < 1m

    High: 18 °C

  • Saturday
    Night

    Partly Cloudy

    W 15km/h
    < 1m

    Low: 12 °C

  • Sunday

    Mostly Sunny

    N 10km/h
    < 1m

    High: 17 °C

  • Sunday
    Night

    Partly Cloudy

    WNW 10km/h
    < 1m

    Low: 12 °C

  • Monday

    Mostly Sunny

    NW 10km/h
    < 1m

    High: 18 °C


High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:39 am EDT Jul 18, 2019
Forecast Valid: 9am EDT Jul 18, 2019-6pm EDT Jul 24, 2019

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Detailed Forecast

Today
SW wind 10 to 15 km/h. A slight chance of showers and thunderstorms between 10am and 2pm. Patchy fog between 11am and 3pm. Waves 1 m or less.
Tonight
SSW wind 10 to 15 km/h. A chance of showers and thunderstorms, mainly before 9pm. Waves 1 m or less.
Friday
W wind 15 to 20 km/h. Patchy fog before 9am. Waves 1 m or less.
Friday Night
W wind 10 to 15 km/h increasing to 15 to 20 km/h after midnight. Winds could gust as high as 30 km/h. A slight chance of showers and thunderstorms after 10pm. Waves 1 m or less.
Saturday
W wind 15 to 20 km/h. Mostly sunny. Waves 1 m or less.
Saturday Night
W wind 10 to 15 km/h becoming N after midnight. Partly cloudy. Waves 1 m or less.
Sunday
NE wind around 10 km/h becoming NNW in the afternoon. Mostly sunny. Waves 1 m or less.
Sunday Night
NNW wind 5 to 10 km/h becoming SE in the evening. Partly cloudy. Waves 1 m or less.
Monday
NW wind around 10 km/h. Mostly sunny. Waves 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: 47.48°N 87.87°W
Last Update: 5:39 am EDT Jul 18, 2019
Forecast Valid: 9am EDT Jul 18, 2019-6pm EDT Jul 24, 2019
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