622
FZUS53 KLOT 230909
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
409 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>742-231530-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
409 AM CDT THU APR 23 2026
TODAY
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHEAST 15 TO 25 KT.
PATCHY FOG IN THE MORNING. 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>745-231530-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
409 AM CDT THU APR 23 2026
TODAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 15 TO 25 KT. 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.
DOOM
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