641
FZUS63 KMKX 220746
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
246 AM CDT SUN MAR 22 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 AROUND 29.5 INCHES WILL CONTINUE EAST ACROSS THE
LAKE EARLY THIS MORNING. AS THIS LOW PASSES, WINDS WILL SHIFT TO
THE NORTH AND NORTHEAST AND BECOME GUSTY THIS MORNING. A FEW,
SPORADIC NORTHERLY GALES ARE POSSIBLE ACROSS THE SOUTHERN THIRD OF
THE LAKE.
HIGH PRESSURE AROUND 30.4 INCHES WILL BUILD INTO THE GREAT LAKES
REGION FROM CANADA MONDAY BRINGING DECREASING WINDS. AS THIS HIGH
EXITS TUESDAY AND A WEAK FRONT PASSES, WINDS MAY PICK UP A BIT
FROM THE SOUTH. WINDS OVER THE LAKE WILL REMAIN LARGELY FROM THE
SOUTH THROUGH WEDNESDAY AS BROAD LOW PRESSURE APPROACHES FROM THE
WEST. CHANCES FOR PRECIPITATION ON TUESDAY AND AGAIN ON WEDNESDAY
THOUGH PRIMARILY FOR NORTHERN PARTS OF THE LAKE.
LMZ261-362-364-366-563-565-567-868-221530-
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-
246 AM CDT SUN MAR 22 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TODAY
NORTH WINDS TO 30 KT. SLIGHT CHANCE OF RAIN THIS
MORNING. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
TONIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT. WAVES
6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
MONDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 15 KT.
WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT.
TUESDAY
SOUTHWEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
TUESDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING NORTHEAST 10 TO
20 KT. WAVES 2 TO 4 FT.
WEDNESDAY
EAST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT VEERING TO WEST 15 TO
25 KT. CHANCE OF RAIN AND SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-221530-
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-
246 AM CDT SUN MAR 22 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
NORTH WINDS TO 30 KT. CHANCE OF SPRINKLES AND SLIGHT
CHANCE OF RAIN. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT BUILDING TO
8 TO 11 FT OCCASIONALLY TO 14 FT.
TONIGHT
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.
MONDAY
NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
EAST WINDS 10 TO 15 KT VEERING TO SOUTH 10 TO
20 KT. WAVES 2 TO 4 FT.
TUESDAY
SOUTH WINDS 10 TO 20 KT. WAVES 3 TO 5 FT.
TUESDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST.
WAVES 2 TO 4 FT.
WEDNESDAY
SOUTHEAST WINDS 10 TO 20 KT BECOMING EAST. WAVES
3 TO 5 FT.
THURSDAY
SOUTH WINDS 10 TO 20 KT VEERING TO NORTHWEST 15 TO
25 KT. CHANCE OF RAIN. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
LMZ761-221530-
MAFOR 2210/
MICHIGAN NORTH 14840 11840 12830 11820. A CHANCE OF RAIN EARLY
THIS MORNING. WAVES 3 TO 5 FEET BUILDING TO 5 TO 8 FEET TODAY.
WAVES 5 TO 8 FEET SUBSIDING TO 3 TO 6 FEET TONIGHT.
MICHIGAN SOUTH 15840 11840 11830. WAVES 3 TO 5 FEET BUILDING TO 8
TO 11 FEET TODAY. WAVES 7 TO 11 FEET SUBSIDING TO 5 TO 8 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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