Tropical Moisture Producing Heavy Rain in Portions of the Western U.S., Southeast Florida, and Puerto Rico and the U.S. Virgin Islands

Heavy rain and flash flooding will continue across portions of California, the Southwest, and parts of the Southern Rockies. Strong to locally severe thunderstorms and heavy rain will impact portions of the Plains and Mississippi Valley. Tropical moisture is causing heavy rainfall in southeast Florida, Puerto Rico and the Virgin Islands, Read More >

Last Update: 244 PM CDT Thu Sep 18 2025

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Chicago, IL Local Forecast Office

6NM WNW Michigan City IN

Marine Zone Forecast

Tonight
Northeast winds 5 to 10 kt becoming east late. Mostly clear. Waves 1 to 2 ft.
Friday
Southeast winds 5 to 10 kt becoming northeast 10 to 15 kt in the afternoon. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 to 2 ft.
Friday Night
East winds 10 to 15 kt becoming southeast overnight. Slight chance of showers late in the evening, then chance of showers overnight. Waves 1 to 2 ft.
Saturday
Southeast winds 10 to 15 kt becoming east in the afternoon. Slight chance of showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Waves 1 to 2 ft.



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244 PM CDT Thu Sep 18 2025
 
 

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