National Weather Service Marine Forecast FZUS53 KLOT

FZUS53 KLOT 220214
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
914 PM CDT Wed Oct 21 2026

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>742-220930
Winthrop Harbor to Wilmette Harbor IL
Wilmette Harbor to Northerly Island IL
Northerly Island to Calumet Harbor IL
914 PM CDT Wed Oct 21 2026

REST OF TONIGHT
Light and variable winds of around 5 kts or less. Clear. Waves 1 ft or less.

THURSDAY
North winds around 5 kt becoming northeast 5 to 10 kt in the afternoon. Sunny. Waves 1 ft or less.

THURSDAY NIGHT
Northeast winds around 10 kt becoming southeast overnight. Partly cloudy. Waves around 1 ft.

FRIDAY
Southeast winds around 10 kt. Partly cloudy in the morning then clearing. Waves 1 to 2 ft.

LMZ743>745-220930
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN
Burns Harbor to Michigan City IN
914 PM CDT Wed Oct 21 2026

REST OF TONIGHT
Light and variable winds of around 5 kts or less. Clear. Waves 1 ft or less.

THURSDAY
Northwest winds around 5 kt becoming north 5 to 10 kt in the afternoon. Sunny. Waves 1 ft or less.

THURSDAY NIGHT
Northeast winds around 10 kt becoming southeast overnight. Partly cloudy. Waves around 1 ft.

FRIDAY
Southeast winds around 10 kt. Partly cloudy in the morning then clearing. Waves 1 ft or less.

Ogorek