573
FZUS53 KLOT 221509
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1009 AM CDT WED APR 22 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>742-222115-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
1009 AM CDT WED APR 22 2026
REST OF TODAY
NORTH WINDS AROUND 15 KT DIMINISHING TO AROUND
10 KT. AREAS OF FOG. WAVES 1 TO 3 FT.
TONIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING SOUTH OVERNIGHT.
PATCHY FOG. WAVES 1 TO 2 FT.
THURSDAY
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 15 TO 20
KT. MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY CLOUDY.
WAVES 1 TO 3 FT.
THURSDAY NIGHT
SOUTH WINDS 15 TO 20 KT. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
LMZ743>745-222115-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
1009 AM CDT WED APR 22 2026
REST OF TODAY
NORTH WINDS 10 TO 15 KT. PATCHY FOG LATE IN THE
MORNING, THEN AREAS OF FOG IN THE AFTERNOON. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING SOUTH OVERNIGHT.
PATCHY FOG. WAVES 1 TO 2 FT.
THURSDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 20 KT.
PARTLY CLOUDY. WAVES 1 TO 2 FT.
THURSDAY NIGHT
SOUTH WINDS 15 TO 20 KT. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
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