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FZUS53 KLOT 181440

NSHLOT



Nearshore Marine Forecast

National Weather Service Chicago/Romeoville IL

940 AM CDT Fri Jul 18 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>742-182130-

Winthrop Harbor to Wilmette Harbor IL-

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

940 AM CDT Fri Jul 18 2025



.REST OF TODAY...East winds around 10 kt. Partly cloudy. Waves 1 

to 3 ft. 

.TONIGHT...East winds 5 to 10 kt becoming south overnight. Chance

of showers and slight chance of thunderstorms late. Waves 1 to 2 

ft.

.SATURDAY...South winds 10 to 15 kt becoming southwest. Chance of

showers and thunderstorms in the morning, then showers likely and

a chance of thunderstorms in the afternoon. Waves 1 to 2 ft. 

.SATURDAY NIGHT...Northwest winds 10 to 15 kt becoming north

overnight. Chance of showers and thunderstorms in the evening,

then slight chance of showers and thunderstorms overnight. Waves

1 to 3 ft. 



$$



LMZ743>745-182130-

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

Burns Harbor to Michigan City IN-

940 AM CDT Fri Jul 18 2025



.REST OF TODAY...East winds around 10 kt becoming northeast in

the afternoon. Partly cloudy. Waves 1 to 3 ft. 

.TONIGHT...East winds 5 to 10 kt becoming south overnight. Slight

chance of showers and thunderstorms late. Waves around 1 ft.

.SATURDAY...South winds 10 to 15 kt becoming southwest in the

afternoon. Chance of showers and thunderstorms in the morning,

then showers and thunderstorms likely in the afternoon. Waves

around 1 ft. 

.SATURDAY NIGHT...Northwest winds 10 to 15 kt becoming north

overnight. Chance of showers and thunderstorms in the evening,

then slight chance of showers and thunderstorms overnight. Waves

1 to 2 ft.  



$$



RC