318
FZUS63 KMKX 311437
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
937 AM CDT TUE MAR 31 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
A SLOW MOVING COLD FRONT OVER CENTRAL LAKE MICHIGAN WILL REACH THE
SOUTHERN TIP OF THE LAKE LATE THIS AFTERNOON. MODEST TO BREEZY
SOUTHERLY WINDS SOUTH OF THE FRONT WILL SHIFT NORTHERLY AND BECOME
BRISK INTO WEDNESDAY. BREEZY EASTERLY WINDS ARE THEN EXPECTED
WEDNESDAY NIGHT AND THURSDAY BETWEEN HIGH PRESSURE OF 30.7 INCHES
EAST OF JAMES BAY IN CANADA AND LOW PRESSURE OF 29.4 INCHES
LIFTING FROM THE CENTRAL PLAINS INTO WISCONSIN. GUSTS COULD
APPROACH GALE FORCE DURING THIS PERIOD, PARTICULARLY ACROSS
NORTHERN PORTIONS OF THE LAKE.
LMZ261-362-364-366-563-565-567-868-312115-
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-
937 AM CDT TUE MAR 31 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
SCATTERED RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS LATE
THIS MORNING, THEN SCATTERED RAIN SHOWERS WITH A CHANCE OF
THUNDERSTORMS THIS AFTERNOON. WAVES 3 TO 5 FT.
TONIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
3 TO 5 FT.
WEDNESDAY
NORTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
WEDNESDAY NIGHT
NORTHEAST WINDS TO 30 KT BECOMING EAST. CHANCE
OF SNOW AND RAIN IN THE EVENING, THEN RAIN WITH A CHANCE OF SNOW
OVERNIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
THURSDAY
EAST GALES TO 35 KT. RAIN, SNOW AND FREEZING RAIN IN
THE MORNING, THEN RAIN AND FREEZING RAIN IN THE AFTERNOON. WAVES
7 TO 10 FT OCCASIONALLY TO 13 FT.
THURSDAY NIGHT
SOUTHEAST GALES TO 35 KT VEERING TO WEST TO
30 KT. RAIN. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
FRIDAY
WEST WINDS 15 TO 25 KT BECOMING NORTH 10 TO 20 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT.
SATURDAY
EAST WINDS TO 30 KT BECOMING NORTHEAST 15 TO 25 KT.
RAIN AND FREEZING RAIN LIKELY. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-312115-
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-
937 AM CDT TUE MAR 31 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
SOUTHERLY WINDS 15 TO 25 KT VEERING TO NORTHWEST
15 TO 25 KT. SCATTERED RAIN SHOWERS WITH A CHANCE OF
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3
TO 5 FT.
TONIGHT
NORTH WINDS TO 30 KT. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
RAIN SHOWERS OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
WEDNESDAY
NORTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF RAIN SHOWERS IN THE MORNING, THEN CHANCE OF RAIN AND
RAIN SHOWERS IN THE AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
WEDNESDAY NIGHT
NORTHEAST WINDS TO 30 KT BECOMING EAST. RAIN
LIKELY IN THE EVENING, THEN RAIN OVERNIGHT. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT.
THURSDAY
EAST WINDS TO 30 KT BECOMING SOUTHEAST. RAIN IN THE
MORNING, THEN RAIN WITH A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
THURSDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO
25 KT. RAIN WITH A CHANCE OF THUNDERSTORMS. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
FRIDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT.
SATURDAY
SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTHWEST. RAIN.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
LMZ761-312115-
MAFOR 3116/
MICHIGAN NORTH 11140 19146 11830 19836 11830 11840 13830 11130.
WAVES 2 TO 4 FEET THIS AFTERNOON. WAVES 2 TO 4 FEET BUILDING TO 3
TO 5 FEET TONIGHT. WAVES 3 TO 6 FEET WEDNESDAY MORNING.
MICHIGAN SOUTH 11640 19646 11736 11846 13840 12130. WAVES 3 TO 5
FEET SUBSIDING TO 2 TO 4 FEET THIS AFTERNOON. WAVES 3 TO 6 FEET
TONIGHT. WAVES 3 TO 6 FEET BUILDING TO 4 TO 7 FEET WEDNESDAY
MORNING.
GEHRING
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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