Severe Thunderstorms Possible for the Great Lakes into Ohio Valley; Heavy to Excessive Rainfall Over the Southern Plains

Severe thunderstorms will race along a cold front from the Upper Mississippi Valley into the Great Lakes and Ohio Valley with the main threat being damaging winds. The tail end of this front will possibly produce heavy to excessive rainfall across the southern Plains into the Lower Mississippi Valley through Saturday. Finally, Major-to-record river flooding continues across the Carolinas.
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Chicago, IL Local Forecast Office

4NM NE Chicago IL

Marine Point Forecast

[NOTICE]
  • Tonight

    Chance Thunderstorms

    SSW 35km/h
    < 1m

    Low: 22 °C

  • Friday

    Slight Chc Thunderstorms

    W 35km/h
    < 1m

    High: 23 °CFalling Temperatures

  • Friday
    Night

    Mostly Cloudy

    NW 25km/h
    < 1m

    Low: 13 °C

  • Saturday

    Mostly Sunny

    E 20km/h
    < 1m

    High: 18 °C

  • Saturday
    Night

    Mostly Clear

    NE 15km/h
    < 1m

    Low: 13 °C

  • Sunday

    Sunny

    E 15km/h
    < 1m

    High: 21 °C

  • Sunday
    Night

    Mostly Clear

    E 15km/h
    < 1m

    Low: 15 °C

  • Monday

    Sunny

    SE 15km/h
    < 1m

    High: 23 °C

  • Monday
    Night

    Chance Thunderstorms

    SSE 20km/h
    < 1m

    Low: 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: 8:15 pm CDT Sep 20, 2018
Forecast Valid: 9pm CDT Sep 20, 2018-6pm CDT Sep 27, 2018

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Detailed Forecast

Tonight
SSW wind 30 to 35 km/h, with gusts as high as 55 km/h. A chance of showers and thunderstorms after 4am. Waves 1 m or less.
Friday
SW wind 30 to 35 km/h becoming WNW in the afternoon. Winds could gust as high as 50 km/h. A slight chance of showers and thunderstorms before 7am. Waves 1 m or less.
Friday Night
NW wind 20 to 25 km/h becoming NNE after midnight. Winds could gust as high as 35 km/h. Mostly cloudy. Waves 1 m or less.
Saturday
E wind 10 to 20 km/h. Mostly sunny. Waves 1 m or less.
Saturday Night
NE wind 10 to 15 km/h becoming E after midnight. Mostly clear. Waves 1 m or less.
Sunday
E wind 10 to 15 km/h. Sunny. Waves 1 m or less.
Sunday Night
E wind around 15 km/h becoming SE after midnight. Winds could gust as high as 20 km/h. Mostly clear. Waves 1 m or less.
Monday
SE wind around 15 km/h. Sunny. Waves 1 m or less.
Monday Night
SSE wind 15 to 20 km/h. A chance of showers and thunderstorms. 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: 41.88°N 87.62°W
Last Update: 8:15 pm CDT Sep 20, 2018
Forecast Valid: 9pm CDT Sep 20, 2018-6pm CDT Sep 27, 2018
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