FZUS53 KLOT 210815

NSHLOT



Nearshore Marine Forecast

National Weather Service Chicago/Romeoville IL

315 AM CDT Mon Sep 21 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>742-211530-

Winthrop Harbor to Wilmette Harbor IL-

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

315 AM CDT Mon Sep 21 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING...



.TODAY...Northeast winds 20 to 25 kt. Patchy drizzle or light 

rain this morning. Waves 6 to 9 ft occasionally to 12 ft subsiding

to 5 to 8 ft occasionally to 10 ft.

.TONIGHT...Northeast winds 15 to 25 kt. Mostly cloudy. Waves 5 to

8 ft occasionally to 10 ft.

.TUESDAY...Northeast winds 15 to 25 kt. Mostly cloudy. Waves 5 to

8 ft occasionally to 10 ft. 

.TUESDAY NIGHT...Northeast winds 20 to 25 kt diminishing to 15 to

20 kt. Partly cloudy. Waves 5 to 8 ft occasionally to 10 ft

subsiding to 4 to 7 ft occasionally to 9 ft. 



$$



LMZ743-744-211530-

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

315 AM CDT Mon Sep 21 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...



.TODAY...Northeast winds 20 to 25 kt. Patchy drizzle or light 

rain this morning. Waves 5 to 8 ft occasionally to 10 ft.

.TONIGHT...Northeast winds 20 to 25 kt easing to 15 to 20 kt after

midnight. Mostly cloudy. Waves 5 to 8 ft occasionally to 10 ft 

subsiding to 4 to 6 ft occasionally to 8 ft.

.TUESDAY...Northeast winds 15 to 20 kt. Mostly cloudy in the

morning, then becoming partly cloudy. Waves 4 to 6 ft

occasionally to 8 ft.

.TUESDAY NIGHT...Northeast winds 15 to 20 kt. Partly cloudy in

the evening, then becoming mostly cloudy. Waves 4 to 6 ft

occasionally to 8 ft.  



$$



LMZ745-211530-

Burns Harbor to Michigan City IN-

315 AM CDT Mon Sep 21 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...



.TODAY...Northeast winds 15 to 20 kt. Patchy drizzle or light 

rain in the morning. Waves 4 to 6 ft occasionally to 8 ft 

subsiding to 3 to 5 ft.

.TONIGHT...Northeast winds 15 to 20 kt. Mostly cloudy. Waves 3 to

5 ft. 

.TUESDAY...Northeast winds 15 to 20 kt. Mostly cloudy in the

morning, then becoming partly cloudy. Waves 3 to 5 ft. 

.TUESDAY NIGHT...Northeast winds 15 to 20 kt. Partly cloudy in

the evening, then becoming mostly cloudy. Waves 3 to 5 ft.  



$$



Ratzer