888
FZUS63 KMKX 071403
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
903 AM CDT TUE JUL 7 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
HIGH PRESSURE AROUND 30.1 INCHES WILL REMAIN IN PLACE OVER THE
UPPER GREAT LAKES REGION TODAY. EXPECT DEVELOPING SOUTH WINDS
OVER THE NORTHERN PORTIONS OF THE LAKE, WITH LIGHT AND VARIABLE
WINDS TO THE SOUTH. MODEST SOUTH SOUTHWEST WINDS SHOULD THEN
DEVELOP TONIGHT AND CONTINUE ON WEDNESDAY, AS WEAK LOW PRESSURE
AROUND 29.8 INCHES AND AN ACCOMPANYING COLD FRONT APPROACHES FROM
THE NORTHERN GREAT PLAINS. MODEST SOUTHWEST WINDS WEDNESDAY NIGHT
WILL BECOME NORTHWEST TO NORTH BEHIND THE FRONTAL PASSAGE THURSDAY
INTO FRIDAY, WITH HIGH PRESSURE AROUND 30.0 INCHES BUILDING INTO
THE THE UPPER GREAT LAKES REGION.
LMZ261-362-364-366-563-565-567-868-072130-
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-
903 AM CDT TUE JUL 7 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 2 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 5 TO 10 KT.
SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES 1 TO 2 FT.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
WEDNESDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST.
SHOWERS WITH A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. CHANCE OF
SHOWERS. WAVES 1 TO 3 FT.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 1 TO 3 FT.
FRIDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO 20 KT.
WAVES 1 TO 3 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KT VEERING TO WEST 10 TO
20 KT. WAVES 1 FT OR LESS.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-072130-
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-
903 AM CDT TUE JUL 7 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
NORTH WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
TONIGHT
WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES 1 FT
OR LESS.
WEDNESDAY
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
CHANCE OF SHOWERS. WAVES 2 TO 4 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT. SHOWERS LIKELY IN THE
MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 TO 3 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH
10 TO 15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO
2 FT.
FRIDAY
NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
SATURDAY
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH 10 TO
20 KT. WAVES 1 TO 2 FT.
LMZ761-072130-
MAFOR 0716/
MICHIGAN NORTH 13510 11500 13400 11510. A CHANCE OF SHOWERS
WEDNESDAY MORNING. WAVES 1 FOOT OR LESS.
MICHIGAN SOUTH 11800 11810 11610 11500 11400 12500 11510. WAVES 1
FOOT OR LESS.
GEHRING
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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