848
FZUS63 KMKX 250810
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
310 AM CDT FRI SEP 25 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 30.4 INCHES WILL LINGER OVER SOUTHERN ONTARIO
CANADA AND THE GREAT LAKES THROUGH TODAY AND INTO THE WEEKEND,
GRADUALLY WEAKENING TO 30.1 INCHES. LIGHT TO MODERATE EAST TO
SOUTHEAST WINDS HAVE TAKEN OVER EARLY THIS MORNING AND SHOULD
PERSIST UNTIL THE MID-AFTERNOON WHEN WINDS BRIEFLY BECOME LIGHT
AND VARIABLE. NORTHEAST WINDS THEN TAKE OVER THIS EVENING, AND
COME AROUND TO SOUTHEASTERLY AGAIN BY SATURDAY MORNING. PREDOMINANTLY
DRY AND QUIET WEATHER EXPECTED.
HIGH PRESSURE WILL PROGRESS INTO THE OHIO VALLEY EARLY TUESDAY,
ALLOWING WINDS TO TURN SOUTH AND INCREASE AS LOW PRESSURE DEVELOPS
IN THE CENTRAL PLAINS.
LMZ261-362-364-366-563-565-567-868-251515-
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-
310 AM CDT FRI SEP 25 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TODAY
SOUTH WINDS 10 TO 15 KT VEERING TO WEST. WAVES 1 TO 3 FT
SUBSIDING TO 1 TO 2 FT.
TONIGHT
NORTH WINDS 5 TO 10 KT VEERING TO SOUTHEAST. WAVES
1 FT OR LESS.
SATURDAY
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES 1 TO
2 FT.
SATURDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING SOUTHEAST.
WAVES 1 FT OR LESS.
SUNDAY
SOUTHEAST WINDS 5 TO 10 KT BACKING TO NORTHEAST. WAVES
NEARLY CALM.
SUNDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
MONDAY
EAST WINDS 5 TO 10 KT VEERING TO SOUTH. WAVES NEARLY
CALM.
TUESDAY
SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT BUILDING TO
3 TO 5 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-251515-
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-
310 AM CDT FRI SEP 25 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
SOUTHEAST WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
TONIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES 1 TO
2 FT.
SATURDAY
EAST WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES 1 TO
3 FT.
SATURDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES
1 TO 2 FT.
SUNDAY
EAST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 TO 2 FT.
SUNDAY NIGHT
NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES
1 TO 2 FT.
MONDAY
EAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
TUESDAY
SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT BUILDING TO
3 TO 5 FT.
LMZ761-251515-
MAFOR 2510/
MICHIGAN NORTH 11410 12400 11500 11800 11100 11200 11300. WAVES 1
TO 3 FEET TODAY. WAVES 1 FOOT OR LESS TONIGHT.
MICHIGAN SOUTH 12310 12200 12100 11200 11210. WAVES 1 TO 3 FEET
TODAY. WAVES 2 FEET OR LESS TONIGHT.
CMILLER
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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