846
FZUS53 KLOT 180906
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
406 AM CDT THU SEP 18 2025
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>742-181530-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
406 AM CDT THU SEP 18 2025
TODAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT
IN THE AFTERNOON. MOSTLY SUNNY. WAVES AROUND 1 FT.
TONIGHT
NORTHEAST WINDS 5 TO 10 KT. MOSTLY CLEAR. WAVES 1 TO
2 FT.
FRIDAY
EAST WINDS 10 TO 15 KT. MOSTLY SUNNY IN THE MORNING,
THEN BECOMING PARTLY CLOUDY. WAVES 1 TO 3 FT.
FRIDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 15 TO 20
KT OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2
TO 4 FT BUILDING TO 3 TO 5 FT.
LMZ743>745-181530-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
406 AM CDT THU SEP 18 2025
TODAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15
KT IN THE AFTERNOON. SUNNY. WAVES AROUND 1 FT.
TONIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING EAST OVERNIGHT.
MOSTLY CLEAR. WAVES 1 TO 2 FT.
FRIDAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST IN THE
AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. WAVES 1 TO 2 FT.
FRIDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST
OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING, THEN SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES 1 TO
3 FT.
YACK
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