787
FZUS53 KLOT 301540
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1040 AM CDT THU JUL 30 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>742-302115-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
1040 AM CDT THU JUL 30 2026
REST OF TODAY
SOUTHEAST WINDS AROUND 5 KT. MOSTLY SUNNY LATE
IN THE MORNING, THEN BECOMING PARTLY CLOUDY. WAVES AROUND 1 FT.
TONIGHT
SOUTHEAST WINDS AROUND 10 KT BECOMING SOUTHWEST LATE.
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING PARTLY CLOUDY. WAVES
AROUND 1 FT.
FRIDAY
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST IN THE
AFTERNOON. CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FT.
FRIDAY NIGHT
EAST WINDS 10 TO 20 KT. RAIN. A SLIGHT CHANCE OF
A THUNDERSTORM. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
LMZ743>745-302115-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
1040 AM CDT THU JUL 30 2026
REST OF TODAY
NORTH WINDS AROUND 5 KT BECOMING NORTHEAST.
SUNNY LATE IN THE MORNING, THEN BECOMING PARTLY CLOUDY. WAVES
AROUND 1 FT.
TONIGHT
EAST WINDS AROUND 5 KT BECOMING SOUTH LATE. PARTLY
CLOUDY IN THE EVENING, THEN BECOMING MOSTLY CLOUDY. WAVES 1 FT OR
LESS.
FRIDAY
SOUTH WINDS 10 TO 15 KT. PARTLY CLOUDY IN THE MORNING,
THEN BECOMING CLOUDY. WAVES AROUND 1 FT.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KT BECOMING EAST
OVERNIGHT. RAIN. A SLIGHT CHANCE OF A THUNDERSTORM. WAVES 1 TO 2
FT BUILDING TO 2 TO 4 FT.
PETR
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