532
FZUS63 KMKX 211355
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
855 AM CDT SAT MAR 21 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
LIGHT WINDS EARLY THIS MORNING WILL CONTINUE AS HIGH PRESSURE
AROUND 30.3 INCHES MOVES FROM JAMES BAY TO MICHIGAN TO THE MID
ATLANTIC. AS THIS HIGH MOVES EAST OF THE LAKE TODAY, WINDS WILL
SHIFT TO SOUTHEAST TO SOUTH.
MEANWHILE, LOW PRESSURE AROUND 29.5 INCHES WILL DEVELOP IN
EASTERN WYOMING THIS MORNING AND MOVE EAST SOUTHEAST TOWARD
CENTRAL ILLINOIS/INDIANA BY SUNDAY. AS THIS LOW PASSES SOUTH OF
THE LAKE IT IS EXPECTED TO DEEPEN TO AROUND 29.4 INCHES. WINDS
WILL SHIFT TO THE NORTH AND NORTHEAST AND BECOME GUSTY LATER
TONIGHT INTO SUNDAY MORNING. A FEW NORTHERLY GALES ARE POSSIBLE
SUNDAY, MAINLY OVER SOUTHERN PORTIONS OF THE LAKE. HIGH PRESSURE
AROUND 30.4 INCHES SHOULD THEN BRING DECREASING WINDS FOR MONDAY.
LMZ261-362-364-366-563-565-567-868-212115-
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-
855 AM CDT SAT MAR 21 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 15 TO
25 KT LATE THIS MORNING, THEN INCREASING TO 30 KT EARLY THIS
AFTERNOON BECOMING SOUTH LATE. PATCHY FOG. CHANCE OF SPRINKLES,
FLURRIES AND SLIGHT CHANCE OF LIGHT FREEZING RAIN THROUGH MID
MORNING, THEN CHANCE OF RAIN THIS AFTERNOON. WAVES 1 FT OR LESS
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
TONIGHT
SOUTH WINDS 15 TO 25 KT VEERING TO NORTHWEST 10 TO
15 KT LATE IN THE EVENING, THEN BECOMING NORTH 10 TO 20 KT AFTER
MIDNIGHT INCREASING TO 15 TO 25 KT LATE. CHANCE OF RAIN AND
SLIGHT CHANCE OF LIGHT FREEZING RAIN OVERNIGHT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT.
SUNDAY
NORTH WINDS TO 30 KT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
SUNDAY NIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT
OVERNIGHT. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
MONDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 15 KT.
WAVES 3 TO 5 FT SUBSIDING TO 1 TO 3 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO
25 KT. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
TUESDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
WEDNESDAY
EAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-212115-
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-
855 AM CDT SAT MAR 21 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 15 TO
25 KT LATE THIS MORNING, THEN BECOMING SOUTH TO 30 KT THIS
AFTERNOON. CHANCE OF SPRINKLES THROUGH MID MORNING. WAVES 1 TO
3 FT BUILDING TO 3 TO 5 FT.
TONIGHT
SOUTHWEST WINDS 15 TO 25 KT VEERING TO NORTH 10 TO
20 KT. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
SUNDAY
NORTH WINDS TO 30 KT INCREASING TO GALES TO 35 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 8 TO 11 FT
OCCASIONALLY TO 14 FT.
SUNDAY NIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 7 TO 10 FT
OCCASIONALLY TO 13 FT.
MONDAY
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
MONDAY NIGHT
EAST WINDS 10 TO 15 KT VEERING TO SOUTH 10 TO
20 KT. WAVES 2 TO 4 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT.
WEDNESDAY
EAST WINDS 15 TO 25 KT BECOMING SOUTHEAST 10 TO
20 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
LMZ761-212115-
MAFOR 2116/
MICHIGAN NORTH 12340 11440 11720 11810 11820 11830 11840. A
CHANCE OF SNOW LATE THIS MORNING, THEN A CHANCE OF RAIN THIS
AFTERNOON. A CHANCE OF RAIN OVERNIGHT. WAVES 2 FEET OR LESS
BUILDING TO 3 TO 5 FEET THIS AFTERNOON. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET TONIGHT. WAVES 3 TO 6 FEET SUNDAY
MORNING. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
MICHIGAN SOUTH 11430 11440 11540 11530 11620 11820 11830 11840.
WAVES 1 TO 2 FEET BUILDING TO 3 TO 5 FEET THIS AFTERNOON. WAVES 3
TO 5 FEET SUBSIDING TO 1 TO 3 FEET TONIGHT. WAVES 3 TO 6 FEET
SUNDAY MORNING.
KUROSKI
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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