656
FZUS63 KMKX 241942
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
242 PM CDT TUE MAR 24 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 OF 30.4 INCHES OVER THE NORTHEAST U.S. AND HIGH
PRESSURE OF 30.5 INCHES PRESSING INTO ONTARIO AS LOW PRESSURE
DEVELOPS IN THE LEE OF THE CENTRAL ROCKIES, KEEPING WINDS
SOUTHWESTERLY THROUGH THIS EVENING. WINDS WILL WEAKEN AND SHIFT
TO BECOME SOUTH-SOUTHEASTERLY TONIGHT AS HIGH PRESSURE BUILDS
INTO THE HUDSON BAY. SOUTHERLY WINDS THEN INCREASE INTO
WEDNESDAY, BECOMING BREEZY. WEAK LOW PRESSURE OF 29.7 INCHES WILL
PROGRESS THROUGH THE UPPER PENINSULA OF MICHIGAN WEDNESDAY
NIGHT, SHIFTING WINDS TO SOUTHWESTERLY AND ALLOWING THEM TO
DIMINISH. TUESDAY MORNING, A COLD FRONT FROM THIS LOW WILL DRAG
SOUTHWARD THROUGH THE LAKE. WINDS BEHIND THE FRONT WILL BECOME
NORTHERLY AND STRONG. GALES ARE BECOMING MORE LIKELY THURSDAY
AFTERNOON THROUGH THURSDAY NIGHT FOR THE SOUTHERN TWO-THIRDS OF
THE LAKE. WINDS GRADUALLY DIMINISH THROUGH FRIDAY, WITH HIGH
PRESSURE BRINGING LIGHT AND VARIABLE WINDS FRIDAY NIGHT.
SATURDAY, SOUTHWESTERLY WINDS DEVELOP AGAIN AS HIGH PRESSURE
SITS OVER THE EASTERN SEABOARD AND LOW PRESSURE DEVELOPS IN THE
CENTRAL PLAINS.
LMZ261-362-364-366-563-565-567-868-250315-
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-
242 PM CDT TUE MAR 24 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TONIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST. WAVES 2 TO
4 FT SUBSIDING TO 1 TO 3 FT.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
SLIGHT CHANCE OF LIGHT FREEZING RAIN IN THE MORNING, THEN CHANCE
OF RAIN IN THE AFTERNOON. WAVES 3 TO 5 FT.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
THURSDAY
WEST WINDS 10 TO 20 KT VEERING TO NORTH 15 TO 25 KT.
CHANCE OF RAIN IN THE MORNING, THEN CHANCE OF RAIN AND SNOW IN
THE AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 4 TO 6 FT OCCASIONALLY
TO 8 FT.
THURSDAY NIGHT
NORTH WINDS TO 30 KT. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT.
FRIDAY
NORTH WINDS TO 30 KT BECOMING NORTHWEST 10 TO 20 KT IN
THE AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
FRIDAY NIGHT
WEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT.
SATURDAY
WEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
SUNDAY
SOUTH WINDS 15 TO 25 KT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-250315-
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-
242 PM CDT TUE MAR 24 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES 2 TO
4 FT SUBSIDING TO 1 TO 3 FT.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 3 TO 5 FT.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 15 KT VEERING TO NORTHWEST
10 TO 20 KT. CHANCE OF RAIN IN THE AFTERNOON. WAVES 1 TO 3 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
NORTH GALES TO 35 KT. CHANCE OF RAIN IN THE
EVENING. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT.
FRIDAY
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
FRIDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES
3 TO 5 FT.
SATURDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT.
SUNDAY
SOUTH WINDS 15 TO 25 KT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
LMZ761-250315-
MAFOR 2422/
MICHIGAN NORTH 11410 13310 12410 12420. A CHANCE OF RAIN
WEDNESDAY AFTERNOON. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET
TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET WEDNESDAY.
MICHIGAN SOUTH 13310 13410 12420. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
WEDNESDAY.
MH
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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