FZUS53 KLOT 290245
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
945 PM CDT Tue Oct 28 2025

For waters within five nautical miles of shore on Lake Michigan

Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered.

LMZ740-290930
Winthrop Harbor to Wilmette Harbor IL
945 PM CDT Tue Oct 28 2025

SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING

REST OF TONIGHT
East winds to 30 kt. A few 35 kt gales mainly before midnight. Mostly cloudy late in the evening, then becoming partly cloudy. Waves 6 to 9 ft occasionally to 12 ft building to 7 to 10 ft occasionally to 13 ft.

WEDNESDAY
East winds around 25 kt becoming northeast. Mostly sunny in the morning, then becoming partly cloudy. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft in the afternoon.

WEDNESDAY NIGHT
Northeast winds 15 to 25 kt diminishing to 10 to 20 kt. Partly cloudy. Waves 5 to 8 ft occasionally to 10 ft.

THURSDAY
North winds 10 to 20 kt. Partly cloudy. Waves 4 to 6 ft occasionally to 8 ft.

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LMZ741-742-290930
Wilmette Harbor to Northerly Island IL
Northerly Island to Calumet Harbor IL
945 PM CDT Tue Oct 28 2025

SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING

REST OF TONIGHT
East winds to 30 kt. A few 35 kt gales mainly before midnight. Mostly cloudy. Waves 5 to 8 ft occasionally to 10 ft.

WEDNESDAY
East winds around 25 kt becoming northeast. Mostly sunny. Waves 5 to 8 ft occasionally to 10 ft.

WEDNESDAY NIGHT
Northeast winds 20 to 25 kt diminishing to 15 to 20 kt. Partly cloudy in the evening then clearing. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.

THURSDAY
North winds 15 to 20 kt. Mostly sunny. Waves 4 to 6 ft occasionally to 8 ft.

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LMZ743>745-290930
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN
Burns Harbor to Michigan City IN
945 PM CDT Tue Oct 28 2025

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

REST OF TONIGHT
East winds to 30 kt. Mostly cloudy. Waves 3 to 6 ft occasionally to 8 ft.

WEDNESDAY
East winds 20 to 25 kt becoming northeast. Mostly sunny. Waves 4 to 7 ft occasionally to 9 ft.

WEDNESDAY NIGHT
Northeast winds 15 to 25 kt. Mostly clear. Waves 4 to 7 ft occasionally to 9 ft.

THURSDAY
North winds 15 to 20 kt. Partly cloudy in the morning then clearing. Waves 4 to 6 ft occasionally to 8 ft.

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Carlaw