644
FZUS53 KLOT 180438 AAA
NSHLOT
NEARSHORE MARINE FORECAST...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1138 PM CDT FRI APR 17 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>742-180915-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
1138 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
REST OF TONIGHT
SOUTHWEST WINDS 20 TO 25 KT BECOMING WEST
LATE. SHOWERS AND A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FT.
SATURDAY
NORTHWEST WINDS 20 TO 25 KT BECOMING WEST. SLIGHT
CHANCE OF SHOWERS IN THE MORNING. WAVES 2 TO 4 FT.
SATURDAY NIGHT
WEST WINDS 15 TO 20 KT DIMINISHING TO 10 TO
15 KT. PARTLY CLOUDY IN THE EVENING, THEN BECOMING MOSTLY CLEAR.
WAVES 1 TO 3 FT.
SUNDAY
WEST WINDS 10 TO 15 KT BECOMING NORTHWEST 15 TO 20 KT
IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON.
WAVES 1 TO 2 FT.
LMZ743>745-180915-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
1138 PM CDT FRI APR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
REST OF TONIGHT
SOUTH WINDS 20 TO 25 KT BECOMING SOUTHWEST
LATE. SHOWERS AND A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FT.
SATURDAY
NORTHWEST WINDS 20 TO 25 KT. CHANCE OF SHOWERS IN
THE MORNING. WAVES 3 TO 5 FT.
SATURDAY NIGHT
NORTHWEST WINDS 15 TO 20 KT BECOMING WEST 10
TO 15 KT. PARTLY CLOUDY IN THE EVENING THEN CLEARING. WAVES 2 TO
4 FT.
SUNDAY
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST IN THE
AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN BECOMING MOSTLY
CLOUDY. WAVES 1 TO 3 FT.
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