939
FZUS53 KLOT 310227 AAA
NSHLOT
NEARSHORE MARINE FORECAST...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
927 PM CDT MON MAR 30 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>742-310915-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
927 PM CDT MON MAR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING
...SEVERE THUNDERSTORM WATCH 77 IN EFFECT UNTIL 3 AM CDT
TUESDAY...
REST OF TONIGHT
SOUTH WINDS 20 TO 25 KT BECOMING SOUTHWEST
WITH A FEW GUSTS AROUND 30 KT. SCATTERED THUNDERSTORMS. SOME
STORMS COULD BE SEVERE WITH DAMAGING WINDS AND LARGE HAIL. WAVES
2 TO 4 FT. WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
TUESDAY
SOUTHWEST WINDS 20 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN SHOWERS
WITH THUNDERSTORMS LIKELY IN THE AFTERNOON. WAVES 2 TO 4 FT.
TUESDAY NIGHT
NORTH WINDS 20 TO 25 KT. RAIN SHOWERS WITH
THUNDERSTORMS LIKELY IN THE EVENING, THEN CHANCE OF SHOWERS
OVERNIGHT. WAVES 3 TO 5 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
WEDNESDAY
NORTHEAST WINDS 20 TO 25 KT. CHANCE OF SHOWERS.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
LMZ743>745-310915-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
927 PM CDT MON MAR 30 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING
REST OF TONIGHT
SOUTH WINDS 20 TO 25 KT BECOMING SOUTHWEST WITH
A FEW GUSTS AROUND 30 KT. ISOLATED SHOWERS AND THUNDERSTORMS LATE
THIS EVENING, THEN SCATTERED SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
TUESDAY
SOUTHWEST WINDS 20 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN SHOWERS
WITH THUNDERSTORMS LIKELY IN THE AFTERNOON. WAVES 2 TO 4 FT.
TUESDAY NIGHT
NORTH WINDS 20 TO 25 KT. RAIN SHOWERS WITH
THUNDERSTORMS LIKELY IN THE EVENING, THEN SHOWERS LIKELY AND
SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 3 TO 5 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
WEDNESDAY
NORTHEAST WINDS 20 TO 25 KT. CHANCE OF SHOWERS IN
THE MORNING, THEN SHOWERS LIKELY AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9
FT.
RATZER
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