146
FZUS53 KLOT 180824
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
324 AM CDT FRI SEP 18 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.
LMZ740-181515-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
324 AM CDT FRI SEP 18 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM THIS MORNING TO 3 PM
CDT THIS AFTERNOON...
TODAY
NORTHEAST WINDS 15 TO 20 KT. PARTLY CLOUDY IN THE
MORNING, THEN BECOMING MOSTLY CLOUDY. WAVES 3 TO 6 FT OCCASIONALLY
TO 8 FT.
TONIGHT
EAST WINDS 15 TO 20 KT BECOMING SOUTHEAST OVERNIGHT.
SHOWERS AND THUNDERSTORMS LIKELY OVERNIGHT. WAVES 3 TO 5 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 20 KT. SHOWERS WITH
THUNDERSTORMS LIKELY IN THE MORNING, THEN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
SATURDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT. SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. WAVES 3 TO 5 FT.
LMZ741-742-181515-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
324 AM CDT FRI SEP 18 2026
TODAY
NORTHEAST WINDS 10 TO 20 KT. PARTLY CLOUDY IN THE
MORNING, THEN BECOMING MOSTLY CLOUDY. WAVES 3 TO 5 FT SUBSIDING
TO 2 TO 4 FT.
TONIGHT
EAST WINDS 15 TO 20 KT BECOMING SOUTHEAST OVERNIGHT.
SHOWERS AND THUNDERSTORMS LIKELY OVERNIGHT. WAVES 3 TO 5 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT. A SMALL CRAFT
ADVISORY WILL LIKELY BE NEEDED.
SATURDAY
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH. SHOWERS
WITH THUNDERSTORMS LIKELY IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT.
SATURDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT. SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
LMZ743>745-181515-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
324 AM CDT FRI SEP 18 2026
TODAY
NORTHEAST WINDS 10 TO 15 KT. PARTLY CLOUDY IN THE
MORNING, THEN BECOMING MOSTLY CLOUDY. WAVES 2 TO 4 FT.
TONIGHT
EAST WINDS 10 TO 15 KT INCREASING TO 15 TO 20 KT
OVERNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES
2 TO 4 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH IN THE
AFTERNOON. SHOWERS WITH THUNDERSTORMS LIKELY 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.
SATURDAY NIGHT
EAST WINDS AROUND 10 KT BECOMING NORTHEAST
OVERNIGHT. SHOWERS AND A CHANCE OF THUNDERSTORMS IN THE EVENING,
THEN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES
1 TO 3 FT.
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