Tracking Storms with Impacts in the Northwest and Northeast U.S.

A Pacific storm will move across the Northwest U.S. through Thursday with low elevation rainfall, gusty winds, and mountain snows. A storm crossing the Northeast U.S. will continue gusty to high winds, scattered rain showers and limited snow showers into Thursday. Read More >

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: 909 PM CST Wed Nov 5 2025




Rest Of Tonight: Northwest winds 10 to 15 kt becoming west 5 to 10 kt. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 2 ft.

Thursday: South winds around 10 kt increasing to 15 to 20 kt by late afternoon. Mostly sunny in the morning, then becoming mostly cloudy. Waves 1 to 2 ft building to 2 to 4 ft.

Thursday Night: South winds to 30 kt with occasional gale force gusts to 35 kt, becoming southwest 20 to 25 kt late. Slight chance of showers late in the evening, then showers and slight chance of thunderstorms overnight. Waves 3 to 6 ft.

Friday: Southwest winds 15 to 20 kt becoming west. Chance of showers in the morning. Waves 2 to 4 ft subsiding to 1 to 3 ft.







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

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