073
FZUS63 KMKX 050151
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
851 PM CDT FRI SEP 4 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 WINDS OVER LAKE MICHIGAN WILL SHIFT EAST-NORTHEASTERLY
OVERNIGHT INTO SATURDAY MORNING A COLD FRONT GRADUALLY SLIDES
SOUTHWARD. AREAS OF DENSE FOG MAY FORM OVER CENTRAL AND SOUTHERN
LAKE MICHIGAN AFTER THE FRONTAL PASSAGE AND CONTINUE THROUGH
SATURDAY MORNING. THEN HIGH PRESSURE AROUND 30.1 INCHES BUILDS
OVER THE GREAT LAKES FROM ONTARIO THROUGH THE WEEKEND AND WILL
BRING MODEST NORTHEAST WINDS THROUGH SATURDAY, ESPECIALLY FOR
CENTRAL AND SOUTHERN LAKE MICHIGAN. WINDS EVENTUALLY WEAKEN AND
BECOME MORE LIGHT AND VARIABLE FOR SUNDAY AND MONDAY AS AN
ADDITIONAL HIGH PRESSURE SLOWLY REINFORCES THE HIGH PRESSURE OVER
THE GREAT LAKES.
LMZ261-362-364-366-563-565-567-868-050930-
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-
851 PM CDT FRI SEP 4 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
NORTHEAST WINDS 10 TO 15 KT BECOMING EAST.
PATCHY FOG OVERNIGHT. SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES
1 TO 2 FT.
SATURDAY
EAST WINDS 10 TO 15 KT BECOMING NORTHEAST 10 TO
20 KT. WAVES 1 TO 3 FT.
SATURDAY NIGHT
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
EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT. WAVES
1 TO 2 FT.
SUNDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 5 TO
10 KT. WAVES 1 TO 2 FT.
MONDAY
SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
MONDAY NIGHT
SOUTHEAST WINDS 5 TO 10 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. CHANCE OF
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 5 TO
8 FT OCCASIONALLY TO 10 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT BECOMING WEST GALES TO
40 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-050930-
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-
851 PM CDT FRI SEP 4 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
NORTHEAST WINDS 5 TO 10 KT. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. PATCHY FOG OVERNIGHT. WAVES 1 TO 2 FT.
SATURDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO
20 KT. PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FT.
SATURDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 10 TO
15 KT. WAVES 2 TO 4 FT.
SUNDAY
EAST WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES 2 TO
4 FT.
SUNDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT BECOMING SOUTHEAST.
WAVES 1 TO 3 FT.
MONDAY
SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
MONDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 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.
WEDNESDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST TO 30 KT.
CHANCE OF SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ761-050930-
MAFOR 0504/
MICHIGAN NORTH 14210 12110 12120. WAVES 2 FEET OR LESS OVERNIGHT
AND SATURDAY. WAVES 1 TO 3 FEET SATURDAY EVENING.
MICHIGAN SOUTH 12100 13110 11120 11820 11120. WAVES 2 FEET OR
LESS OVERNIGHT AND SATURDAY. WAVES 1 TO 3 FEET SATURDAY EVENING.
WAGNER
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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