538
FZUS53 KLOT 231958
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
258 PM CDT SUN AUG 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.
LMZ740-240315-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
258 PM CDT SUN AUG 23 2026
LATE THIS AFTERNOON
NORTHWEST WINDS 10 TO 20 KT. PARTLY
CLOUDY. WAVES 2 TO 4 FT.
TONIGHT
NORTHWEST WINDS 10 TO 15 KT. MOSTLY CLEAR. WAVES 2 TO
4 FT SUBSIDING TO 1 TO 3 FT.
MONDAY
NORTHWEST WINDS AROUND 5 KT BECOMING NORTHEAST AROUND 10
KT LATE. MOSTLY SUNNY. WAVES 1 TO 3 FT.
MONDAY NIGHT
EAST WINDS AROUND 10 KT BECOMING SOUTHWEST LESS
THAN 10 KT OVERNIGHT. PARTLY CLOUDY IN THE EVENING THEN CLEARING.
WAVES 1 TO 2 FT.
TUESDAY
SOUTHWEST WINDS LESS THAN 10 KT BECOMING SOUTHEAST
10 TO 15 KT IN THE AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN
BECOMING PARTLY CLOUDY. WAVES 1 TO 2 FT.
LMZ741>743-240315-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
CALUMET HARBOR IL TO GARY IN-
258 PM CDT SUN AUG 23 2026
LATE THIS AFTERNOON
NORTHEAST WINDS 10 TO 15 KT. PARTLY
CLOUDY. WAVES 2 TO 4 FT.
TONIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING NORTHWEST LATE.
MOSTLY CLEAR. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
MONDAY
WEST WINDS AROUND 5 KT BECOMING NORTHEAST LATE. MOSTLY
SUNNY IN THE MORNING, THEN BECOMING PARTLY CLOUDY. WAVES 1 TO
3 FT.
MONDAY NIGHT
EAST WINDS AROUND 10 KT BECOMING SOUTHWEST LESS
THAN 10 KT OVERNIGHT. PARTLY CLOUDY IN THE EVENING THEN CLEARING.
WAVES 1 TO 2 FT.
TUESDAY
SOUTH WINDS LESS THAN 10 KT BECOMING SOUTHEAST AROUND
10 KT IN THE AFTERNOON. MOSTLY SUNNY. WAVES AROUND 1 FT.
LMZ744-745-240315-
GARY TO BURNS HARBOR IN-BURNS HARBOR TO MICHIGAN CITY IN-
258 PM CDT SUN AUG 23 2026
LATE THIS AFTERNOON
NORTHEAST WINDS 10 TO 20 KT. MOSTLY SUNNY.
WAVES 3 TO 5 FT.
TONIGHT
NORTH WINDS AROUND 10 KT BECOMING NORTHWEST LATE.
MOSTLY CLEAR. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
MONDAY
WEST WINDS AROUND 5 KT BECOMING NORTH LATE. MOSTLY
SUNNY. WAVES 1 TO 3 FT.
MONDAY NIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING SOUTH LESS
THAN 10 KT OVERNIGHT. PARTLY CLOUDY IN THE EVENING THEN CLEARING.
WAVES 1 TO 2 FT.
TUESDAY
SOUTH WINDS LESS THAN 10 KT BECOMING SOUTHEAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES AROUND 1 FT.
- IZZI
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