172
FZUS63 KMKX 180745
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
245 AM CDT THU JUN 18 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
AS LOW PRESSURE OF 29.3 EXITS EASTWARD INTO MICHIGAN EARLY THIS
MORNING, EXPECT WINDS TO SHIFT TO NORTHWESTERLY AND DIMINISH
GRADUALLY TODAY. WINDS REMAIN LIGHT AND NORTHWESTERLY THROUGH FRIDAY
AS HIGH PRESSURE AROUND 30.0 INCHES PROGRESSES SOUTHEASTWARD INTO
THE LOWER MISSISSIPPI VALLEY. WINDS MAY BRIEFLY TURN
SOUTHWESTERLY FRIDAY NIGHT AS WEAK LOW PRESSURE MOVES THROUGH THE
REGION, BUT HIGH PRESSURE WILL RAPIDLY REGAIN DOMINANCE BY
SATURDAY, KEEPING WINDS LIGHT AND VARIABLE. STRONGER LOW PRESSURE
WILL APPROACH FROM THE CENTRAL PLAINS ON SUNDAY, BRINGING MORE
WIDESPREAD RAIN AND THUNDERSTORMS AND TURNING WINDS TO
NORTHEASTERLY. NORTHEAST WINDS WILL CONTINUE INTO EARLY NEXT WEEK.
LMZ261-362-364-366-563-565-567-868-181515-
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-
245 AM CDT THU JUN 18 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TODAY
NORTHWEST WINDS 15 TO 25 KT BACKING TO SOUTHWEST 10 TO
20 KT. CHANCE OF SHOWERS THIS MORNING. WAVES 3 TO 5 FT SUBSIDING
TO 1 TO 3 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 20 KT BECOMING NORTHWEST.
ISOLATED SHOWERS IN THE EVENING. WAVES 1 TO 3 FT.
FRIDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES
1 TO 3 FT.
FRIDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 5 TO
10 KT OVERNIGHT. CHANCE OF SHOWERS OVERNIGHT. WAVES 1 TO 3 FT.
SATURDAY
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO
20 KT. WAVES 1 TO 2 FT.
SATURDAY NIGHT
WEST WINDS 10 TO 15 KT VEERING TO NORTHEAST.
WAVES 1 TO 2 FT.
SUNDAY
NORTH WINDS 5 TO 10 KT INCREASING TO 10 TO 20 KT. WAVES
1 FT OR LESS BUILDING TO 1 TO 2 FT.
MONDAY
NORTH WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES 3 TO
5 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-181515-
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-
245 AM CDT THU JUN 18 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
NORTHWEST WINDS TO 30 KT BECOMING WEST 10 TO 20 KT EARLY
THIS AFTERNOON, THEN BECOMING SOUTHWEST LATE. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING NORTHWEST 10 TO
20 KT. WAVES 2 TO 4 FT.
FRIDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING SOUTHWEST 10 TO
15 KT. WAVES 2 TO 4 FT.
FRIDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST.
CHANCE OF SHOWERS. WAVES 1 TO 2 FT.
SATURDAY
WEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
SATURDAY NIGHT
SOUTH WINDS 5 TO 10 KT BACKING TO NORTHEAST.
WAVES 1 TO 2 FT.
SUNDAY
NORTHEAST WINDS 10 TO 15 KT INCREASING TO 15 TO 25 KT.
CHANCE OF SHOWERS. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
MONDAY
NORTH WINDS TO 30 KT. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT.
LMZ761-181515-
MAFOR 1810/
MICHIGAN NORTH 13730 11620 11520 11610 11620 11720. A CHANCE OF
SHOWERS THIS MORNING. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET,
THEN SUBSIDING TO 1 TO 3 FEET TODAY. WAVES 1 TO 3 FEET TONIGHT.
MICHIGAN SOUTH 11740 12730 11620 11510 11610 12620. WAVES 4 TO 7
FEET SUBSIDING TO 2 TO 4 FEET TODAY. WAVES 1 TO 3 FEET TONIGHT.
DDV
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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