860
FZUS63 KMKX 051407
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
907 AM CDT WED AUG 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
A STALLED FRONT IS SITTING OVER SOUTHERN LAKE MICHIGAN THIS
MORNING. LIGHT AND VARIABLE WINDS CAN BE EXPECTED THROUGH THURSDAY
AS THE FRONT SHIFTS SOUTH AND WEAKENS AND HIGH PRESSURE MOVES
INTO THE REGION. INTERMITTENT SHOWERS AND THUNDERSTORMS CAN ALSO
BE EXPECTED TODAY INTO TONIGHT.
A PROLONGED PERIOD OF SOUTH-SOUTHWEST WINDS WILL THEN BECOME
ESTABLISHED ACROSS LAKE MICHIGAN LATE THURSDAY NIGHT THROUGH
SUNDAY, WITH THE EXCEPTION OF NORTHWEST WINDS SATURDAY MORNING
WITH A BRIEF COLD FRONTAL PASSAGE.
LMZ261-362-364-366-563-565-567-868-052115-
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-
907 AM CDT WED AUG 5 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTH WINDS 5 TO 10 KT VEERING TO SOUTHEAST.
SLIGHT CHANCE OF SHOWERS LATE THIS MORNING, THEN SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS THIS AFTERNOON. WAVES 1 TO 2 FT.
TONIGHT
EAST WINDS 5 TO 10 KT BECOMING SOUTH. SLIGHT CHANCE OF
SHOWERS IN THE EVENING. PATCHY FOG OVERNIGHT. WAVES 1 FT OR LESS.
THURSDAY
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST LATE IN THE
MORNING, THEN BECOMING 10 TO 20 KT EARLY IN THE AFTERNOON
BECOMING SOUTHWEST 10 TO 20 KT LATE. WAVES 1 TO 2 FT.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRIDAY
SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
FRIDAY NIGHT
SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT.
SATURDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES
1 TO 3 FT.
SUNDAY
SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-052115-
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-
907 AM CDT WED AUG 5 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH.
SLIGHT CHANCE OF SHOWERS LATE THIS MORNING, THEN CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON. WAVES
1 TO 2 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT VEERING TO NORTH. CHANCE
OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. PATCHY FOG
OVERNIGHT. WAVES 1 TO 2 FT.
THURSDAY
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 FT
OR LESS.
THURSDAY NIGHT
EAST WINDS 5 TO 10 KT VEERING TO SOUTH. WAVES
NEARLY CALM.
FRIDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 FT OR LESS BUILDING TO 1 TO 3 FT.
FRIDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES
1 TO 3 FT.
SATURDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST 10 TO
15 KT. WAVES 1 TO 3 FT.
SUNDAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH. CHANCE OF
SHOWERS. WAVES 1 TO 3 FT.
LMZ761-052115-
MAFOR 0516/
MICHIGAN NORTH 11800 11210 11300 12100 11300 11400 11410. A
CHANCE OF SHOWERS THIS AFTERNOON. WAVES 2 FEET OR LESS.
MICHIGAN SOUTH 11510 12410 11700 11800 19806 11800 12100. 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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