National Weather Service Marine Forecast FZUS53 KLOT

FZUS53 KLOT 040200
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
900 PM CDT Sun May 3 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>742-040915
Winthrop Harbor to Wilmette Harbor IL
Wilmette Harbor to Northerly Island IL
Northerly Island to Calumet Harbor IL
900 PM CDT Sun May 3 2026

REST OF TONIGHT
Southwest winds 15 to 20 kt diminishing to around 10 kt. Mostly clear. Waves 1 to 2 ft.

MONDAY
Southwest winds 10 to 15 kt increasing to 15 to 25 kt. Partly cloudy. Waves 1 to 3 ft.

MONDAY NIGHT
Southwest winds 10 to 20 kt becoming northwest 10 to 15 kt overnight. Showers likely and a chance of thunderstorms in the evening, then chance of showers overnight. Waves 1 to 2 ft.

TUESDAY
North winds 10 to 15 kt becoming northeast in the afternoon. Chance of showers. Waves 1 to 2 ft.

LMZ743>745-040915
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN
Burns Harbor to Michigan City IN
900 PM CDT Sun May 3 2026

REST OF TONIGHT
Southwest winds 15 to 20 kt diminishing to around 10 kt. Mostly clear. Waves 1 to 2 ft.

MONDAY
Southwest winds around 15 kt increasing to 15 to 25 kt. Partly cloudy. Waves 1 to 3 ft.

MONDAY NIGHT
Southwest winds 15 to 20 kt becoming northwest 10 to 15 kt overnight. Showers likely and a chance of thunderstorms in the evening, then chance of showers overnight. Waves 1 to 3 ft.

TUESDAY
North winds 10 to 15 kt becoming northeast in the afternoon. Chance of showers in the morning, then showers likely in the afternoon. Waves 1 to 2 ft.

Ratzer