977
FZUS53 KLOT 230120
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
820 PM CDT WED APR 22 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>742-230915-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
820 PM CDT WED APR 22 2026
REST OF TONIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING SOUTH
LATE. AREAS OF FOG. WAVES 1 TO 2 FT.
THURSDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 15 TO 25 KT IN
THE AFTERNOON. PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FT.
THURSDAY NIGHT
SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
FRIDAY
SOUTHWEST WINDS 15 TO 20 KT BECOMING WEST 10 TO 15 KT
IN THE LATE AFTERNOON. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO 4 FT SUBSIDING TO 1 TO
3 FT.
LMZ743>745-230915-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
820 PM CDT WED APR 22 2026
REST OF TONIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING SOUTH.
AREAS OF FOG. WAVES AROUND 1 FT.
THURSDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 15 TO 20 KT IN
THE AFTERNOON. PARTLY CLOUDY. WAVES 1 TO 2 FT.
THURSDAY NIGHT
SOUTH WINDS 15 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
FRIDAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST IN THE
AFTERNOON. SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS. WAVES 1
TO 3 FT.
- IZZI
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