Widespread Showers and Thunderstorms in Southern California and the Southern Plains into the Mississippi Valley

Isolated strong to severe thunderstorms and widespread heavy rainfall are possible across the southern Plains into Arkansas. Widespread showers with a slight chance of thunderstorms are possible across southern California. Urban flooding, rock and mudslides as well as minor debris flows near burn scars are possible. Read More >

Coastal Waters Forecast for Winthrop Harbor to Wilmette Harbor IL (LMZ740) (Text-Only)
NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740)
Issued by: National Weather Service Chicago, IL
Last Update: 900 PM CST Thu Nov 20 2025


Rest Of Tonight: Southwest winds 10 to 15 kt becoming northwest late. Patchy drizzle. Waves around 1 ft.

Friday: North winds around 10 kt. Mostly cloudy. Waves 1 to 2 ft.

Friday Night: North winds 10 to 15 kt. Cloudy in the evening, then clearing. Waves 1 to 3 ft building to 2 to 4 ft.

Saturday: Northwest winds around 10 kt becoming southwest in the afternoon. Partly cloudy. Waves 2 to 4 ft subsiding to 1 to 2 ft.







Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740)

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