FZUS53 KLOT 211950

NSHLOT



Nearshore Marine Forecast

National Weather Service Chicago/Romeoville IL

250 PM CDT Sat Mar 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>742-220600-

Winthrop Harbor to Wilmette Harbor IL-

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

250 PM CDT Sat Mar 21 2026



...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH

MONDAY AFTERNOON...



.TONIGHT...Southwest winds 15 to 25 kt becoming north overnight. 

Mostly cloudy. Waves 1 to 3 ft building to 3 to 5 ft by daybreak.

.SUNDAY...North winds to 30 kt. A few gale force gusts to 35 kt 

in the afternoon. Patchy fog. Chance of showers. Waves 4 to 7 ft 

occasionally to 9 ft building to 7 to 10 ft occasionally to 13 ft.

.SUNDAY NIGHT...North winds to 30 kt with a few gale force gusts 

to 35 kt in the evening, diminishing to 15 to 25 kt after midnight.

Mostly cloudy. Waves 7 to 10 ft occasionally to 13 ft subsiding 

to 6 to 9 ft occasionally to 12 ft. 

.MONDAY...North winds 10 to 20 kt becoming northeast 10 to 15 kt.

Mostly cloudy in the morning then clearing. Waves 4 to 6 ft

occasionally to 8 ft subsiding to 2 to 4 ft.  



$$



LMZ743>745-220600-

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

Burns Harbor to Michigan City IN-

250 PM CDT Sat Mar 21 2026



...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH

MONDAY AFTERNOON...



.TONIGHT...Southwest winds 15 to 20 kt becoming northwest late. 

Partly cloudy in the evening, then becoming mostly cloudy. Waves 1

to 3 ft. 

.SUNDAY...North winds 15 to 25 kt increasing to 30 kt during the 

morning. A few gale force gusts to 35 kt possible in the 

afternoon. Patchy fog. Slight chance of showers in the morning, 

then chance of showers in the afternoon. Waves 4 to 6 ft 

occasionally to 8 ft building to 7 to 10 ft occasionally to 13 ft.

.SUNDAY NIGHT...North winds to 30 kt with a few gale force gusts 

to 35 kt in the evening, diminishing to 20 to 25 kt after midnight.

Mostly cloudy. Waves 8 to 12 ft occasionally to 16 ft subsiding 

to 7 to 10 ft occasionally to 13 ft. 

.MONDAY...North winds 10 to 20 kt. Mostly cloudy in the morning,

then becoming partly cloudy. Waves 4 to 7 ft occasionally to 9 ft

subsiding to 3 to 5 ft.  



$$



KJB