270
FZUS63 KMKX 310208
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
908 PM CDT FRI MAY 30 2025
FOR WATERS BEYOND 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 WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.
SYNOPSIS
WINDS WILL BECOME MORE NORTHERLY TONIGHT BEHIND A FRONTAL
PASSAGE. WEAK LOW PRESSURE (RELATIVE HIGH PRESSURE) 29.8 INCHES WILL
THEN BUILD INTO WISCONSIN FOR SATURDAY AND OVER LAKE MICHIGAN FOR
SUNDAY. THUS WINDS WILL LESSEN ON SATURDAY AND BECOME LIGHT AND
VARIABLE FOR LATE SATURDAY THROUGH SUNDAY.
LMZ261-362-364-366-563-565-567-868-310930-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
908 PM CDT FRI MAY 30 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 2 TO 4 FT.
SATURDAY
NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST
10 TO 15 KT. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
SUNDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES 1 TO
2 FT.
SUNDAY NIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 5 TO
10 KT. WAVES 1 TO 2 FT.
MONDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 3 TO 5 FT.
TUESDAY
SOUTH WINDS TO 30 KT. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
WEDNESDAY
SOUTHWEST WINDS 15 TO 25 KT VEERING TO NORTH.
SHOWERS LIKELY. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-310930-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
908 PM CDT FRI MAY 30 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH.
SCATTERED SHOWERS THROUGH LATE EVENING. PATCHY SMOKE. WAVES 2 TO
4 FT.
SATURDAY
NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 3 TO 5 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST
10 TO 15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
SUNDAY
NORTHWEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
SUNDAY NIGHT
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
MONDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT BUILDING
TO 3 TO 5 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY
TO 10 FT.
WEDNESDAY
SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
LMZ761-310930-
MAFOR 3104/
MICHIGAN NORTH 11830 15820 11820. WAVES 1 TO 3 FEET BUILDING TO 2
TO 4 FEET OVERNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET
SATURDAY. WAVES 1 TO 3 FEET SATURDAY EVENING.
MICHIGAN SOUTH 11830 13820 12830 11820 11810. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET OVERNIGHT. WAVES 2 TO 4 FEET SATURDAY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET SATURDAY EVENING.
CRONCE
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MKX/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
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