418
FZUS63 KMKX 270206
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
906 PM CDT WED AUG 26 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
MODEST NORTHWEST WINDS WILL CONTINUE TONIGHT INTO THURSDAY IN THE
WAKE OF A COLD FRONT. WINDS THEN BECOME LIGHT AND VARIABLE
THURSDAY NIGHT AND FRIDAY AS HIGH PRESSURE OF 30.2 INCHES MOVES
FROM THE NORTHERN GREAT LAKES TO THE LOWER GREAT LAKES.
HIGH PRESSURE THEN PULLS EAST SATURDAY AND LOW PRESSURE OF 29.8
INCHES WILL SLOWLY APPROACH FROM THE GREAT PLAINS. MODEST TO
BREEZY SOUTH WINDS WILL DEVELOP FOR THE WEEKEND.
LMZ261-362-364-366-563-565-567-868-270930-
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-
906 PM CDT WED AUG 26 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
NORTHWEST WINDS 10 TO 15 KT INCREASING TO
10 TO 20 KT. ISOLATED SHOWERS THROUGH EARLY EVENING. WAVES 2 TO
4 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. WAVES 2 TO 4 FT.
THURSDAY NIGHT
NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
FRIDAY
NORTHEAST WINDS 10 TO 15 KT VEERING TO SOUTH. WAVES
1 TO 2 FT.
FRIDAY NIGHT
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 3 FT.
SATURDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH TO 25 KT.
WAVES 3 TO 5 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY NIGHT
SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT.
SUNDAY
SOUTH WINDS 20 TO 30 KT. CHANCE OF SHOWERS. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT.
MONDAY
SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-270930-
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-
906 PM CDT WED AUG 26 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
WEST WINDS 10 TO 15 KT BECOMING NORTHWEST
10 TO 20 KT. ISOLATED SHOWERS THROUGH EARLY EVENING. WAVES 1 TO
3 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. WAVES
2 TO 4 FT.
THURSDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO
10 TO 15 KT LATE IN THE EVENING, THEN DIMINISHING TO 5 TO 10 KT
AFTER MIDNIGHT BECOMING EAST LATE. WAVES 1 TO 3 FT SUBSIDING TO
1 TO 2 FT.
FRIDAY
EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST 10 TO 15 KT.
WAVES 1 TO 2 FT.
FRIDAY NIGHT
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 3 FT.
SATURDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH 20 TO 30
KT. WAVES 3 TO 5 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY NIGHT
SOUTH WINDS 20 TO 30 KT. CHANCE OF SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
SUNDAY
SOUTH WINDS 20 TO 30 KT. CHANCE OF SHOWERS. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT.
MONDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH. CHANCE OF
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ761-270930-
MAFOR 2704/
MICHIGAN NORTH 13720 11730 13830 11110. WAVES 1 TO 3 FEET.
MICHIGAN SOUTH 12710 12720 12820 11120 11110. WAVES 1 TO 3 FEET.
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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