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FZUS53 KLOT 230908

NSHLOT



Nearshore Marine Forecast

National Weather Service Chicago/Romeoville IL

408 AM CDT Wed Jul 23 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>742-231515-

Winthrop Harbor to Wilmette Harbor IL-

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

408 AM CDT Wed Jul 23 2025



.TODAY...South winds 10 to 15 kt increasing to 15 to 20 kt.

A slight chance of showers and thunderstorms in the afternoon, 

otherwise partly cloudy. Waves 1 to 3 ft.

.TONIGHT...South winds 10 to 15 kt becoming southwest. Mostly

clear. Waves 1 to 3 ft. 

.THURSDAY...Southwest winds 10 to 15 kt increasing to 15 to

20 kt. Chance of showers and thunderstorms in the afternoon.

Waves 1 to 3 ft. 

.THURSDAY NIGHT...West winds 10 to 15 kt diminishing to 5 to

10 kt. Showers and thunderstorms likely in the evening, then

showers likely and a chance of thunderstorms overnight. Waves

1 to 2 ft.  



$$



LMZ743>745-231515-

Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-

Burns Harbor to Michigan City IN-

408 AM CDT Wed Jul 23 2025



.TODAY...South winds 10 to 15 kt. Mostly sunny. Waves 1 to 2 ft. 

.TONIGHT...South winds 10 to 15 kt. Partly cloudy in the evening,

then becoming mostly clear. Waves around 1 ft. 

.THURSDAY...Southwest winds 10 to 15 kt increasing to 15 to

20 kt. Chance of showers and thunderstorms in the afternoon.

Waves 1 to 2 ft. 

.THURSDAY NIGHT...Southwest winds 10 to 15 kt becoming west.

Showers and thunderstorms likely in the evening, then showers

likely and a chance of thunderstorms overnight. Waves 1 to 2 ft. 



$$

KJB