648
FZUS53 KLOT 210231
NSHLOT
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
931 PM CDT SUN APR 20 2025
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>742-210930-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
931 PM CDT SUN APR 20 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY
...GALE WARNING IN EFFECT FROM 1 AM CDT MONDAY THROUGH MONDAY
EVENING...
REST OF TONIGHT
SOUTHEAST WINDS TO 30 KT BECOMING SOUTH WITH A
FEW GALE FORCE GUSTS TO 35 KT LATE. SHOWERS AND A CHANCE OF
THUNDERSTORMS LATE THIS EVENING AND OVERNIGHT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
MONDAY
SOUTHWEST GALES TO 35 KT BECOMING WEST IN THE
AFTERNOON. CHANCE OF SHOWERS IN THE MORNING. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
WEST WINDS TO 30 KT DIMINISHING TO 10 TO 15 KT.
MOSTLY CLEAR. WAVES 1 TO 3 FT.
TUESDAY
NORTH WINDS 5 TO 10 KT BECOMING EAST 10 TO 15 KT IN
THE AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE AFTERNOON. WAVES
1 FT OR LESS.
LMZ743>745-210930-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
931 PM CDT SUN APR 20 2025
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT MONDAY
...GALE WARNING IN EFFECT FROM 1 AM CDT MONDAY THROUGH MONDAY
EVENING...
REST OF TONIGHT
SOUTHEAST WINDS TO 30 KT BECOMING SOUTH WITH A
FEW GALE FORCE GUSTS TO 35 KT LATE. SHOWERS AND A CHANCE OF
THUNDERSTORMS LATE IN THE EVENING AND OVERNIGHT. WAVES 3 TO 5 FT
SUBSIDING TO 2 TO 4 FT.
MONDAY
SOUTHWEST GALES TO 35 KT BECOMING WEST IN THE
AFTERNOON. CHANCE OF SHOWERS IN THE MORNING. WAVES 3 TO 5 FT.
MONDAY NIGHT
WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT. PARTLY CLOUDY IN THE EVENING THEN CLEARING. WAVES 2 TO
4 FT SUBSIDING TO 1 TO 3 FT.
TUESDAY
NORTHWEST WINDS 5 TO 10 KT BECOMING EAST IN THE
AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN BECOMING PARTLY
CLOUDY. WAVES AROUND 1 FT.
RATZER
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