614
FZUS53 KLOT 211445
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
945 AM CDT FRI AUG 21 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.
LMZ740-212115-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
945 AM CDT FRI AUG 21 2026
REST OF TODAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH LATE.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE
MORNING, THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST OVERNIGHT.
CHANCE OF SHOWERS AND THUNDERSTORMS, MAINLY IN THE EVENING. WAVES
1 TO 2 FT.
SATURDAY
NORTHWEST WINDS 15 TO 20 KT BECOMING NORTH. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO
3 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 15 KT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES 1 TO 3 FT
BUILDING TO 2 TO 4 FT.
LMZ741>743-212115-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
CALUMET HARBOR IL TO GARY IN-
945 AM CDT FRI AUG 21 2026
REST OF TODAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH LATE.
SLIGHT CHANCE OF SHOWERS LATE IN THE MORNING, THEN CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST OVERNIGHT.
CHANCE OF SHOWERS AND THUNDERSTORMS, MAINLY IN THE EVENING. WAVES
1 TO 3 FT.
SATURDAY
NORTHWEST WINDS 15 TO 20 KT BECOMING NORTH IN THE
AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 20 KT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES 2 TO 4 FT BUILDING
TO 3 TO 5 FT.
LMZ744-745-212115-
GARY TO BURNS HARBOR IN-BURNS HARBOR TO MICHIGAN CITY IN-
945 AM CDT FRI AUG 21 2026
REST OF TODAY
SOUTHWEST WINDS AROUND 10 TO 15 KT BECOMING
SOUTH LATE. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
WAVES AROUND 1 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.
SATURDAY
NORTHWEST WINDS 15 TO 20 KT BECOMING NORTH. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO 4
FT BUILDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT. A SMALL CRAFT
ADVISORY WILL LIKELY BE NEEDED.
SATURDAY NIGHT
NORTH WINDS 15 TO 20 KT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING. WAVES 3 TO 6 FT
OCCASIONALLY TO 8 FT. A SMALL CRAFT ADVISORY WILL LIKELY BE
NEEDED.
DOOM
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page