Severe Thunderstorms Possible From The Plains To The Great Lakes, Heat Wave To Continue Over The Southern U.S.

Scattered strong to severe thunderstorms capable of damaging winds, large hail, isolated tornadoes, and heavy rainfall will be possible through tonight from the central Plains to the Great Lakes and Northeast U.S. The heavy rainfall could lead to localized flash flooding. Excessive heat will persist across the southern Plains and Desert Southwest early this week.

Coastal Waters Forecast for Northerly Island to Calumet Harbor IL (LMZ742) (Text-Only)
NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742)
Issued by: National Weather Service Chicago, IL
Last Update: 218 PM CDT Sun Aug 18 2019

Tonight: Southwest winds 15 to 20 kt with gusts to 30 kt early this evening becoming west 10 to 15 kt then becoming north late. slight chance of showers and thunderstorms. Waves 1 ft or less.

Monday: Northeast winds 10 to 15 kt becoming around 10 kt in the afternoon. Partly sunny in the morning then clearing. Waves 1 to 3 ft.

Monday Night: Northeast winds 5 to 10 kt becoming east after midnight. Partly cloudy. Waves 1 ft or less.

Tuesday: South winds 10 to 15 kt. Slight chance of showers and thunderstorms in the afternoon. Waves 1 ft or less.

Zone Forecast: Northerly Island to Calumet Harbor IL (LMZ742)

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