927
FZUS63 KMKX 011403
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
903 AM CDT FRI MAY 1 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
NO MAJOR CHANGES TO THE GOING FORECAST THIS MORNING.
HIGH PRESSURE AROUND 30.2 INCHES CONTINUES TO SIT OVER CENTRAL
CANADA THROUGH THE END OF THE WEEK AND WILL BRING LIGHT AND
VARYING WINDS ACROSS LAKE MICHIGAN THROUGH TODAY. HIGH PRESSURE
BEGINS TO WORK ITS WAY SOUTHEASTWARD TRACKING ACROSS LAKE MICHIGAN
TONIGHT THROUGH THE DAY SATURDAY. WILL BEGIN TO SEE MORE
SOUTHERLY WINDS DEVELOP SATURDAY NIGHT AND PICK UP INTO SUNDAY AS
THE HIGH PRESSURE CONTINUES TO TRACK SOUTHWARD WHILE LOW PRESSURE
AROUND 29.4 INCHES TREKS ACROSS ONTARIO. THIS LOOKS TO DRAG A COLD
FRONT WEEK COLD FRONT ACROSS THE LAKE LATER SUNDAY TURNING WINDS
MORE WESTERLY BRIEFLY, BEFORE ANOTHER LOW PRESSURE AROUND 29.1
INCHES DEVELOPS RIGHT BEHIND IT FOR MONDAY. EXPECTING A STRONGER
COLD FRONT TO MOVE ACROSS THE LAKE THROUGH THE DAY MONDAY AND TURN
WINDS NORTH-NORTHWESTERLY OVERNIGHT INTO TUESDAY.
LMZ261-362-364-366-563-565-567-868-012115-
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-
903 AM CDT FRI MAY 1 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST.
WAVES 1 TO 3 FT.
TONIGHT
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 5 TO 10 KT.
WAVES 1 TO 2 FT.
SATURDAY
NORTHWEST WINDS 5 TO 10 KT BECOMING WEST LATE IN THE
MORNING, THEN BECOMING SOUTHWEST 10 TO 15 KT EARLY IN THE
AFTERNOON INCREASING TO 10 TO 20 KT LATE. WAVES 1 TO 3 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
SUNDAY
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO
4 FT.
MONDAY
SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST TO 30 KT.
WAVES 3 TO 5 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
TUESDAY
WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-012115-
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-
903 AM CDT FRI MAY 1 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 2 TO 4 FT.
TONIGHT
NORTH WINDS 10 TO 20 KT DIMINISHING TO 5 TO 10 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
SATURDAY
NORTH WINDS 5 TO 10 KT BACKING TO SOUTH 10 TO 15 KT.
WAVES 1 TO 2 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST
10 TO 20 KT. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
SUNDAY
SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF RAIN SHOWERS IN
THE MORNING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY
SOUTHWEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT BUILDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
TUESDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. CHANCE OF
RAIN SHOWERS. WAVES 2 TO 4 FT.
LMZ761-012115-
MAFOR 0116/
MICHIGAN NORTH 13710 12810 11800 12700. WAVES 2 FEET OR LESS.
MICHIGAN SOUTH 13820 11810 14800. WAVES 1 TO 3 FEET SUBSIDING TO
1 FOOT OR LESS THIS AFTERNOON AND TONIGHT. WAVES 1 FOOT OR LESS
SATURDAY MORNING.
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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