114
FZUS63 KMKX 231948
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
248 PM CDT SAT MAY 23 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
LOW PRESSURE OF 29.9 INCHES CURRENTLY ENTERING THE WESTERN PORTION
OF LAKE ERIE HAS LEFT A WEAK WIND FIELD IN ITS WAKE AS IT TRACKS
TO THE EAST TOWARD NEW ENGLAND. ANOTHER AREA OF LOW PRESSURE OF
29.8 INCHES CURRENTLY OVER FAR SOUTHEAST MANITOBA WILL TRACK
EASTWARD ACROSS ONTARIO TONIGHT INTO SUNDAY AND PULL A WEAK COLD
FRONT EASTWARD ALONG WITH IT. THIS FRONT SHOULD REACH EASTERN LAKE
MICHIGAN EARLY SUNDAY MORNING AND EXIT BY LATE MORNING. GOING INTO
EARLY NEXT WEEK, A BROAD RIDGE OF HIGH PRESSURE OF 30.2 INCHES IS
EXPECTED TO SET UP OVER THE EASTERN GREAT LAKES, USHERING IN MORE
SOUTHWESTERLY WINDS ACROSS LAKE MICHIGAN. SOME QUESTIONS REMAIN
FOR LATER IN THE WEEK WITH WHETHER A COLD FRONT DROPS DOWN FROM
THE NORTH BY MIDWEEK.
LMZ261-362-364-366-563-565-567-868-240330-
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-
248 PM CDT SAT MAY 23 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TONIGHT
EAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT LATE
THIS EVENING, THEN DIMINISHING TO 10 TO 20 KT AFTER MIDNIGHT
BECOMING SOUTHEAST 10 TO 15 KT LATE. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT SUBSIDING TO 1 TO 2 FT.
SUNDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
ISOLATED RAIN SHOWERS IN THE MORNING. WAVES 1 TO 2 FT.
SUNDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
MONDAY
SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 2 FT BUILDING TO
2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT.
TUESDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 3 FT.
TUESDAY NIGHT
SOUTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 3 FT.
WEDNESDAY
NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 2 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT INCREASING TO 30 KT.
WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-240330-
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-
248 PM CDT SAT MAY 23 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
NORTHEAST WINDS 5 TO 10 KT VEERING TO SOUTHEAST.
ISOLATED RAIN SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 1 TO
2 FT.
SUNDAY
SOUTHEAST WINDS LESS THAN 10 KT INCREASING TO 5 TO
10 KT. SCATTERED RAIN SHOWERS WITH ISOLATED THUNDERSTORMS IN THE
MORNING. WAVES 1 FT OR LESS.
SUNDAY NIGHT
SOUTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 2 FT.
MONDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 2 TO 4 FT.
TUESDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.
TUESDAY NIGHT
SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WEDNESDAY
EAST WINDS 5 TO 10 KT BECOMING NORTH. WAVES NEARLY
CALM BUILDING TO 1 TO 2 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
LMZ761-240330-
MAFOR 2322/
MICHIGAN NORTH 11140 12230 11310 11300 11400 12410. WAVES 3 TO 5
FEET SUBSIDING TO 1 TO 3 FEET TONIGHT. WAVES 1 FOOT OR LESS
SUNDAY.
MICHIGAN SOUTH 11800 11100 11200 11300 12300 19306 12300. WAVES 1
FOOT OR LESS.
HALBACH
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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