869
FZUS53 KLOT 211940
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
240 PM CDT TUE JUL 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>742-220330-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
240 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING
TONIGHT
NORTH TO NORTHEAST WINDS 20 TO 25 KT DIMINISHING TO 15
TO 20 KT. SCATTERED SHOWERS IN THE EVENING, THEN ISOLATED SHOWERS
AFTER MIDNIGHT. WAVES 3 TO 5 FT BUILDING TO 6 TO 9 FT
OCCASIONALLY TO 12 FT.
WEDNESDAY
NORTH WINDS 15 TO 25 KT. PARTLY CLOUDY IN THE
MORNING THEN CLEARING. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
WEDNESDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH
AROUND 5 KT OVERNIGHT. MOSTLY CLEAR. WAVES 3 TO 5 FT SUBSIDING TO
2 TO 4 FT.
THURSDAY
WEST WINDS AROUND 5 KT BECOMING SOUTHEAST 10 TO 15 KT
IN THE AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FT.
LMZ743>745-220330-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
240 PM CDT TUE JUL 21 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT
TONIGHT
NORTH WINDS 20 TO 25 KT DIMINISHING TO 15 TO 20 KT.
SCATTERED SHOWERS IN THE EVENING, THEN ISOLATED SHOWERS AFTER
MIDNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 7 TO
10 FT OCCASIONALLY TO 13 FT.
WEDNESDAY
NORTH WINDS 15 TO 25 KT. ISOLATED SHOWERS IN THE
MORNING. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 7
FT OCCASIONALLY TO 9 FT.
WEDNESDAY NIGHT
NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST
OVERNIGHT. CLEAR. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING
TO 2 TO 4 FT.
THURSDAY
SOUTH WINDS AROUND 5 KT BECOMING NORTHEAST IN THE
AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 3 FT.
KMD
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