886
FZUS63 KMKX 240757
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
257 AM 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 AROUND 30.5 INCHES IN SOUTHWESTERN MICHIGAN WILL
CONTINUE EAST EARLY THIS MORNING AS A LOW PRESSURE AROUND 29.9
INCHES IN WESTERN QUEBEC MOVES TOWARD JAMES BAY. WINDS WILL BECOME
BREEZY ACROSS THE NORTHERN THIRD OF THE LAKE AS THESE TWO SYSTEMS
MOVE EAST. AN FEW INTERMITTENT GALE FORCE GUSTS MAY OCCUR THROUGH
NOON CDT. WINDS WILL THEN EASE DURING THE EARLY AFTERNOON AS A
COLD FRONT APPROACHES THE NORTHERN END OF THE LAKE AND STALLS
LATE THIS AFTERNOON INTO THIS EVENING.
LARGELY SOUTH WINDS WILL THEN REMAIN THROUGH WEDNESDAY INTO
THURSDAY MORNING, AS A BROAD LOW PRESSURE AROUND 29.8 INCHES
APPROACHES FROM THE WEST. THE NEXT BEST CHANCE FOR GALES WILL COME
THURSDAY EVENING AS THE BACKSIDE OF A LOW PRESSURE SYSTEM AROUND
29.6 INCHES WORKS SOUTHEAST AND A COLD FRONT PLUNGES SOUTHWARD
DOWN THE LAKE.
LMZ261-362-364-366-563-565-567-868-241515-
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-
257 AM CDT TUE MAR 24 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TODAY
SOUTHWEST WINDS TO 30 KT INCREASING TO GALES TO 35 KT,
THEN DIMINISHING TO 10 TO 20 KT LATE. CHANCE OF SNOW THIS
MORNING. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
TONIGHT
SOUTH WINDS 10 TO 15 KT. WAVES 2 TO 4 FT SUBSIDING TO
1 TO 3 FT.
WEDNESDAY
SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 15 KT. WAVES 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 2 TO 4 FT BUILDING TO 3 TO 5 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.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
SATURDAY
WEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-241515-
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-
257 AM CDT TUE MAR 24 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 3 TO 5 FT.
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 20 KT. WAVES 2 TO 4 FT.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST.
WAVES 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 2 TO 4 FT
BUILDING TO 3 TO 5 FT.
THURSDAY NIGHT
NORTH GALES TO 35 KT. CHANCE OF RAIN. WAVES
8 TO 11 FT OCCASIONALLY TO 14 FT BUILDING TO 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 6 TO 9 FT
OCCASIONALLY TO 12 FT.
SATURDAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT.
LMZ761-241515-
MAFOR 2410/
MICHIGAN NORTH 11540 11550 11540 11520 11410 13310. A CHANCE OF
SNOW THIS MORNING. WAVES 3 TO 5 FEET BUILDING TO 4 TO 7 FEET,
THEN SUBSIDING TO 3 TO 5 FEET TODAY. WAVES 2 TO 4 FEET SUBSIDING
TO 1 TO 3 FEET TONIGHT.
MICHIGAN SOUTH 11420 12430 11420 11410 12310 11410. WAVES 1 TO 3
FEET BUILDING TO 2 TO 4 FEET TODAY. WAVES 1 TO 3 FEET TONIGHT.
PATTERSON
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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