491
FZUS53 KLOT 221046
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
546 AM 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>742-221530-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
546 AM CDT WED APR 22 2026
TODAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING NORTH THROUGH THE
MORNING, THEN DIMINISHING TO AROUND 10 KT IN THE AFTERNOON. AREAS
OF FOG DEVELOPING THROUGH MID TO LATE MORNING. WAVES 1 TO 3 FT.
TONIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING SOUTH OVERNIGHT.
PATCHY FOG. WAVES 1 TO 2 FT.
THURSDAY
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 15 TO 20
KT. MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY CLOUDY.
WAVES 1 TO 3 FT.
THURSDAY NIGHT
SOUTH WINDS 15 TO 20 KT. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
LMZ743>745-221530-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
546 AM CDT WED APR 22 2026
TODAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING NORTH BY LATE
MORNING. PATCHY FOG DEVELOPING THROUGH MIDDAY, THEN AREAS OF FOG
IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING SOUTH OVERNIGHT.
PATCHY FOG. WAVES 1 TO 2 FT.
THURSDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 20 KT.
PARTLY CLOUDY. WAVES 1 TO 2 FT.
THURSDAY NIGHT
SOUTH WINDS 15 TO 20 KT. CHANCE OF SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
CARLAW
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