597
FZUS53 KLOT 171433
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
933 AM 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>742-172145-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
933 AM CDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM CDT THIS AFTERNOON
THROUGH SATURDAY EVENING...
REST OF TODAY
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH 20 TO
25 KT. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
TONIGHT
SOUTH WINDS 20 TO 25 KT BECOMING SOUTHWEST OVERNIGHT.
SHOWERS WITH THUNDERSTORMS LIKELY IN THE EVENING, THEN SHOWERS
LIKELY AND A CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 3 TO 5 FT
SUBSIDING TO 2 TO 4 FT.
SATURDAY
NORTHWEST WINDS 20 TO 25 KT BECOMING WEST. CHANCE OF
SHOWERS IN THE MORNING. WAVES 1 TO 3 FT.
SATURDAY NIGHT
WEST WINDS 15 TO 25 KT. MOSTLY CLEAR. WAVES
1 TO 3 FT.
LMZ743>745-172145-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
933 AM CDT FRI APR 17 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM CDT THIS AFTERNOON
THROUGH SATURDAY EVENING...
REST OF TODAY
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH 20 TO
25 KT. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
TONIGHT
SOUTH WINDS 20 TO 25 KT BECOMING SOUTHWEST OVERNIGHT.
SHOWERS WITH THUNDERSTORMS LIKELY IN THE EVENING, THEN SHOWERS
AND A CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
SATURDAY
NORTHWEST WINDS 20 TO 25 KT. CHANCE OF SHOWERS IN THE
MORNING. WAVES 3 TO 5 FT.
SATURDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT. PARTLY CLOUDY IN
THE EVENING, THEN BECOMING MOSTLY CLEAR. WAVES 2 TO 4 FT.
KMD
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