722
FZUS53 KLOT 181419
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
919 AM CDT WED MAR 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>742-182115-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
919 AM CDT WED MAR 18 2026
REST OF TODAY
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT THIS AFTERNOON. CHANCE OF SNOW SHOWERS LATE IN THE MORNING.
WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
TONIGHT
SOUTHWEST WINDS AROUND 10 KT. SCATTERED SHOWERS
OVERNIGHT. WAVES 1 TO 2 FT.
THURSDAY
SOUTH WINDS AROUND 5 KT BECOMING NORTHEAST IN THE
AFTERNOON. SCATTERED SHOWERS IN THE MORNING. WAVES 1 TO 2 FT.
THURSDAY NIGHT
NORTHEAST WINDS AROUND 10 KT BECOMING SOUTH
OVERNIGHT. MOSTLY CLOUDY. WAVES 1 TO 2 FT.
LMZ743>745-182115-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
919 AM CDT WED MAR 18 2026
REST OF TODAY
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT THIS AFTERNOON. CHANCE OF SNOW SHOWERS LATE IN THE MORNING.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
TONIGHT
SOUTHWEST WINDS AROUND 10 KT. SCATTERED SHOWERS
OVERNIGHT. WAVES AROUND 1 FT.
THURSDAY
SOUTH WINDS AROUND 10 KT BECOMING NORTHEAST IN THE
AFTERNOON. SCATTERED SHOWERS IN THE MORNING. WAVES AROUND 1 FT.
THURSDAY NIGHT
NORTHEAST WINDS AROUND 5 KT BECOMING SOUTHEAST
OVERNIGHT. MOSTLY CLOUDY. WAVES 1 TO 2 FT.
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