Tropical Storm Bertha in the Gulf; Severe Weather in the East on Tuesday

Tropical Storm Bertha could bring tropical storm conditions to portions of the Florida Panhandle and Alabama coast through Wednesday, where a Tropical Storm Watch and Storm Surge Watch is in effect. Numerous severe thunderstorms with heavy rainfall are expected from the Ohio Valley into the Mid-Atlantic and Northeast Tuesday. Read More >

Hazardous Weather Conditions

Last Update: 304 PM CDT Mon Jul 20 2026

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Chicago, IL Local Forecast Office

8NM ESE Chicago IL

Marine Zone Forecast

Tonight
Southwest winds 10 to 20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
Tuesday
West winds 10 to 20 kt becoming northwest in the afternoon and increasing to 15 to 25 kt late. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 to 3 ft building to 2 to 4 ft.
Tuesday Night
North winds 20 to 25 kt. Slight chance of showers and thunderstorms in the evening. Waves 4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft. a small craft advisory will likely be needed.
Wednesday
North winds 15 to 25 kt. Mostly sunny. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft. A small craft advisory will likely be needed.



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304 PM CDT Mon Jul 20 2026
 
 

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