286
FZUS63 KMKX 300212
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
912 PM CDT WED JUL 29 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 AND VARIABLE WINDS WILL TAKE ON A SOUTHERLY COMPONENT BY
THURSDAY AFTERNOON AS HIGH PRESSURE AROUND 30.0 INCHES STARTS TO
DRIFT TOWARD THE LOWER GREAT LAKES. LOW PRESSURE AROUND 29.7
INCHES WILL TRACK ACROSS IOWA FRIDAY AND THROUGH SOUTHERN
ILLINOIS BY SATURDAY MORNING. BREEZY NORTHEAST WINDS WILL DEVELOP
SATURDAY AND SHOULD CONTINUE THROUGH SUNDAY AFTERNOON AS HIGH
PRESSURE OF 30.0 INCHES BUILDS OVER LAKE SUPERIOR.
LMZ261-362-364-366-563-565-567-868-300930-
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-
912 PM CDT WED JUL 29 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
THURSDAY
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 3 FT.
THURSDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST
10 TO 15 KT. WAVES 1 TO 3 FT.
FRIDAY
SOUTHWEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FT.
FRIDAY NIGHT
SOUTH WINDS 10 TO 15 KT BACKING TO NORTHEAST.
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY OVERNIGHT.
WAVES 1 TO 2 FT.
SATURDAY
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
CHANCE OF SHOWERS IN THE MORNING. WAVES 1 TO 2 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
SUNDAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH TO 30 KT.
WAVES 3 TO 5 FT.
MONDAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 20 KT.
WAVES 1 TO 2 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-300930-
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-
912 PM CDT WED JUL 29 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
NORTH WINDS 10 TO 15 KT BECOMING WEST. WAVES
1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
THURSDAY
WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST LATE IN THE
MORNING, THEN BECOMING SOUTH 10 TO 20 KT LATE. WAVES 1 TO 2 FT.
THURSDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST
10 TO 15 KT. WAVES 1 TO 3 FT.
FRIDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES 1 TO
2 FT.
FRIDAY NIGHT
EAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS IN THE
EVENING, THEN SHOWERS LIKELY OVERNIGHT. WAVES 1 TO 3 FT BUILDING
TO 2 TO 4 FT.
SATURDAY
EAST WINDS 10 TO 20 KT BECOMING NORTHEAST 15 TO
25 KT. CHANCE OF SHOWERS IN THE MORNING. WAVES 3 TO 5 FT.
SATURDAY NIGHT
NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO
10 TO 20 KT. WAVES 3 TO 5 FT.
SUNDAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH TO 30 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
MONDAY
EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
LMZ761-300930-
MAFOR 3004/
MICHIGAN NORTH 14500 14410. WAVES 2 FEET OR LESS.
MICHIGAN SOUTH 11700 13600 11510 13410. WAVES 2 FEET OR LESS.
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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