853
FZUS53 KLOT 200247
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
947 PM CDT TUE MAY 19 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>742-200930-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
947 PM CDT TUE MAY 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
LATE WEDNESDAY NIGHT...
REST OF TONIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH
AFTER MIDNIGHT. MOSTLY CLOUDY. WAVES 1 TO 3 FT BUILDING TO 2 TO 4
FT.
WEDNESDAY
NORTH WINDS 15 TO 20 KT BECOMING NORTHEAST 20 TO
25 KT. MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY CLOUDY.
WAVES 2 TO 4 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
WEDNESDAY NIGHT
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST
15 TO 20 KT. PARTLY CLOUDY. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
SUBSIDING TO 3 TO 6 FT.
THURSDAY
EAST WINDS 15 TO 20 KT BECOMING NORTHEAST IN THE
AFTERNOON. PARTLY CLOUDY IN THE MORNING, THEN BECOMING MOSTLY
CLOUDY. WAVES 2 TO 4 FT.
LMZ743>745-200930-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
947 PM CDT TUE MAY 19 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT WEDNESDAY THROUGH
LATE WEDNESDAY NIGHT...
REST OF TONIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH
AFTER MIDNIGHT. MOSTLY CLOUDY. WAVES 1 TO 3 FT BUILDING TO 2 TO 4
FT.
WEDNESDAY
NORTH WINDS 20 TO 25 KT. MOSTLY CLOUDY. WAVES 3 TO
5 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
WEDNESDAY NIGHT
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST AND
DIMINISHING TO AROUND 15 KT OVERNIGHT. PARTLY CLOUDY. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT.
THURSDAY
EAST WINDS 15 TO 20 KT BECOMING NORTHEAST IN THE
AFTERNOON. PARTLY CLOUDY. WAVES 2 TO 4 FT.
DK
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