159
FZUS53 KLOT 220008 AAA
NSHLOT
NEARSHORE MARINE FORECAST...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
708 PM CDT TUE APR 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>742-220315-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
708 PM CDT TUE APR 21 2026
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING NORTH LATE.
AREAS OF FOG AFTER MIDNIGHT. WAVES 1 TO 3 FT.
WEDNESDAY
NORTH WINDS AROUND 10 KT BECOMING NORTHEAST. AREAS
OF DENSE FOG POSSIBLE IN THE MORNING, THEN PATCHY FOG IN THE
AFTERNOON. WAVES 1 TO 2 FT.
WEDNESDAY NIGHT
EAST WINDS AROUND 10 KT BECOMING SOUTH
OVERNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FT.
THURSDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 20 KT.
PARTLY CLOUDY. WAVES 1 TO 3 FT.
LMZ743>745-220315-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
708 PM CDT TUE APR 21 2026
TONIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST IN THE
EVENING THEN NORTHWEST 5 TO 10 KT OVERNIGHT. AREAS OF FOG AFTER
MIDNIGHT. WAVES 1 TO 3 FT.
WEDNESDAY
NORTH WINDS AROUND 10 KT. AREAS OF FOG IN THE
MORNING, THEN PATCHY FOG IN THE AFTERNOON. WAVES 1 TO 2 FT.
WEDNESDAY NIGHT
EAST WINDS AROUND 10 KT BECOMING SOUTH
OVERNIGHT. PARTLY CLOUDY. WAVES AROUND 1 FT.
THURSDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 20 KT.
PARTLY CLOUDY. WAVES 1 TO 2 FT.
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