603
FZUS63 KMKX 052143
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
249 PM CDT SAT SEP 5 2026
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
LIGHT TO MODEST EAST NORTHEAST WINDS ARE EXPECTED INTO TONIGHT.
HIGH PRESSURE AROUND 30.1 INCHES WILL BUILD INTO THE NORTHERN
GREAT LAKES TONIGHT AND SUNDAY, SHIFTING TO THE LOWER GREAT LAKES
FOR MONDAY. LIGHT AND VARIABLE WINDS ARE FORECAST FOR SUNDAY AND
MONDAY.
INCREASING SOUTH TO SOUTHWEST WINDS ARE POSSIBLE TUESDAY INTO
WEDNESDAY, SHIFTING WEST TO NORTHWEST WEDNESDAY NIGHT INTO
THURSDAY, AS A COLD FRONT MOVES TOWARD AND THROUGH THE REGION.
LMZ261-362-364-366-563-565-567-868-060330-
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-
249 PM CDT SAT SEP 5 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TONIGHT
NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 10 TO 15 KT
AFTER MIDNIGHT, THEN DIMINISHING TO 5 TO 10 KT LATE. WAVES 1 TO
3 FT.
SUNDAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING NORTHEAST. PATCHY
FOG IN THE MORNING. WAVES 1 TO 2 FT.
SUNDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT VEERING TO SOUTH.
WAVES 1 TO 2 FT.
MONDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT. WAVES
1 TO 2 FT.
MONDAY NIGHT
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
20 KT OVERNIGHT. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE OF
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 5 TO
8 FT OCCASIONALLY TO 10 FT.
TUESDAY NIGHT
SOUTH GALES TO 35 KT BECOMING SOUTHWEST. SHOWERS
WITH A CHANCE OF THUNDERSTORMS. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT.
WEDNESDAY
SOUTHWEST GALES TO 35 KT BECOMING WEST GALES TO
40 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
THURSDAY
NORTHWEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-060330-
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-
249 PM CDT SAT SEP 5 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
NORTH WINDS 10 TO 20 KT VEERING TO EAST 10 TO 15 KT.
WAVES 2 TO 4 FT.
SUNDAY
EAST WINDS 10 TO 15 KT BACKING TO NORTH. WAVES 1 TO
3 FT SUBSIDING TO 1 TO 2 FT.
SUNDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT VEERING TO SOUTHEAST.
WAVES 1 TO 3 FT.
MONDAY
SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
MONDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT.
TUESDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. CHANCE
OF SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT BECOMING WEST. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 3 TO 5 FT.
LMZ761-060330-
MAFOR 0522/
MICHIGAN NORTH 11120 12110 12200 11300 11200 11110. WAVES 1 TO 3
FEET TONIGHT. WAVES 2 FEET OR LESS SUNDAY.
MICHIGAN SOUTH 11820 11120 14210 11210 11110. WAVES 1 TO 3 FEET.
WOOD
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MKX/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page