FZUS53 KLOT 181454

NSHLOT



Nearshore Marine Forecast

National Weather Service Chicago/Romeoville IL

954 AM CDT Sat Jul 18 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>742-182115-

Winthrop Harbor to Wilmette Harbor IL-

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

954 AM CDT Sat Jul 18 2026



...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING

THROUGH LATE TONIGHT...



.REST OF TODAY...West winds 15 to 20 kt becoming northeast late.

Chance of showers and thunderstorms. Waves 1 to 2 ft building to

2 to 4 ft. 

.TONIGHT...Northeast winds 15 to 25 kt. Patchy smoke. Waves 4 to 

7 ft occasionally to 9 ft. 

.SUNDAY...Northeast winds 10 to 15 kt. Patchy smoke. Waves 3 to

5 ft subsiding to 2 to 4 ft. 

.SUNDAY NIGHT...East winds around 10 kt becoming south overnight.

Mostly clear. Waves 1 to 2 ft.  



$$



LMZ743>745-182115-

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

Burns Harbor to Michigan City IN-

954 AM CDT Sat Jul 18 2026



...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING

THROUGH LATE TONIGHT...



.REST OF TODAY...West winds 15 to 20 kt becoming north late.

Chance of showers and thunderstorms in the afternoon. Waves 1 to 

3 ft building to 2 to 4 ft.

.TONIGHT...Northeast winds 15 to 25 kt. Slight chance of showers 

and thunderstorms in the evening. Areas of smoke in the evening, 

then patchy smoke overnight. Waves 4 to 7 ft occasionally to 9 ft.

.SUNDAY...Northeast winds 10 to 15 kt. Patchy smoke. Waves 3 to 5

ft subsiding to 1 to 3 ft. 

.SUNDAY NIGHT...Northeast winds around 10 kt becoming southeast

overnight. Mostly clear. Waves 1 to 2 ft.  



$$



Yack