National Weather Service Marine Forecast FZUS53 KLOT

FZUS53 KLOT 130916
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
416 AM CDT Mon Apr 13 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>742-131615
Winthrop Harbor to Wilmette Harbor IL
Wilmette Harbor to Northerly Island IL
Northerly Island to Calumet Harbor IL
416 AM CDT Mon Apr 13 2026

TODAY
Southwest winds 15 to 25 kt becoming south 10 to 20 kt late. Chance of showers and thunderstorms in the afternoon. Waves 1 to 3 ft.

TONIGHT
South winds 15 to 20 kt becoming southwest 20 to 25 kt by the late evening. Chance of showers and thunderstorms. Waves 2 to 4 ft. A small craft advisory will likely be needed.

TUESDAY
Southwest winds 20 to 25 kt. Chance of showers and thunderstorms in the afternoon. Waves 1 to 3 ft.

TUESDAY NIGHT
Southwest winds 15 to 20 kt diminishing to 10 to 15 kt. Showers and thunderstorms. Waves 1 to 3 ft.

LMZ743>745-131615
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN
Burns Harbor to Michigan City IN
416 AM CDT Mon Apr 13 2026

TODAY
Southwest winds 15 to 25 kt becoming south late. Chance of showers and thunderstorms in the afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft.

TONIGHT
South winds 15 to 20 kt becoming southwest 20 to 25 kt by the late evening. Chance of showers and thunderstorms. Waves 2 to 4 ft. A small craft advisory will likely be needed.

TUESDAY
Southwest winds 20 to 25 kt. Chance of showers and thunderstorms in the afternoon. Waves 2 to 4 ft.

TUESDAY NIGHT
Southwest winds 15 to 20 kt diminishing to 10 to 15 kt. Showers and thunderstorms. Waves 1 to 3 ft.

RC