651
FZUS53 KLOT 231413
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
913 AM CDT THU APR 23 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>742-232115-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
913 AM CDT THU APR 23 2026
REST OF TODAY
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST 15 TO
25 KT THIS AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN BECOMING
PARTLY CLOUDY. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT IN
THE AFTERNOON.
TONIGHT
SOUTH WINDS 15 TO 25 KT. SHOWERS LIKELY AND A CHANCE
OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
FRIDAY
SOUTH WINDS 15 TO 20 KT BECOMING WEST 10 TO 15 KT IN
THE AFTERNOON. SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS
IN THE MORNING, THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS
IN THE AFTERNOON. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
FRIDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH
OVERNIGHT. PARTLY CLOUDY. WAVES 1 TO 2 FT.
LMZ743>745-232115-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
913 AM CDT THU APR 23 2026
REST OF TODAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 25
KT THIS AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN BECOMING
PARTLY CLOUDY. WAVES 1 TO 2 FT.
TONIGHT
SOUTH WINDS 15 TO 25 KT. SHOWERS LIKELY AND A CHANCE
OF THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
FRIDAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST IN THE
AFTERNOON. SHOWERS LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE MORNING, THEN SHOWERS AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 TO 2 FT.
FRIDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH
OVERNIGHT. SLIGHT CHANCE OF SHOWERS IN THE EVENING. WAVES 1 TO
3 FT.
KJB
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