404
FZUS53 KLOT 200257
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
957 PM CDT WED AUG 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>742-200915-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
957 PM CDT WED AUG 19 2026
REST OF TONIGHT
NORTHEAST WINDS 10 TO 15 KT. PARTLY CLOUDY.
WAVES 2 TO 4 FT.
THURSDAY
NORTHEAST WINDS AROUND 10 KT. SUNNY. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 3 FT.
THURSDAY NIGHT
EAST WINDS AROUND 10 KT BECOMING SOUTH
OVERNIGHT. MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. WAVES 1 TO 3 FT SUBSIDING TO AROUND 1 FT.
FRIDAY
SOUTHWEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FT.
LMZ743>745-200915-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
957 PM CDT WED AUG 19 2026
REST OF TONIGHT
NORTHEAST WINDS 10 TO 15 KT. MOSTLY CLOUDY
LATE IN THE EVENING, THEN BECOMING PARTLY CLOUDY. WAVES 2 TO
4 FT.
THURSDAY
NORTHEAST WINDS AROUND 10 KT. SUNNY. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 3 FT.
THURSDAY NIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING SOUTHEAST
OVERNIGHT. MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. WAVES 1 TO 3 FT SUBSIDING TO AROUND 1 FT.
FRIDAY
SOUTH WINDS AROUND 10 KT BECOMING SOUTHWEST. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES
AROUND 1 FT.
PETR
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