669
FZUS63 KMKX 221232
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
732 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. GALES HAVE
DEVELOPED QUICKLY THIS MORNING AND HAVE BECOME MORE PERSISTENT
ACROSS THE SOUTHERN THIRD. THUS A GALE WARNING HAS BEEN ISSUED FOR
GUSTS UP TO 40 KTS.
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.
LMZ261-362-364-366-563-565-567-868-222115-
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-
732 AM CDT SUN MAR 22 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTH WINDS TO 30 KT. 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 WEST 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.
LMZ080-671-673-675-777-779-872-874-876-878-222115-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
732 AM CDT SUN MAR 22 2026
PORT WASHINGTON WI TO WHITEHALL MI SOUTH...
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
REST OF TODAY
NORTH GALES TO 35 KT INCREASING TO GALES TO
40 KT. CHANCE OF SPRINKLES AND SLIGHT CHANCE OF RAIN. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT BUILDING TO 8 TO 12 FT OCCASIONALLY TO
16 FT.
TONIGHT
NORTH GALES TO 35 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. 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 2 TO 4 FT.
TUESDAY NIGHT
SOUTH WINDS 10 TO 15 KT. 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. CHANCE
OF RAIN. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
LMZ669-870-222115-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
732 AM CDT SUN MAR 22 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH TO PORT WASHINGTON WI TO
WHITEHALL MI...
REST OF TODAY
NORTH WINDS TO 30 KT INCREASING TO GALES TO
35 KT. CHANCE OF SPRINKLES, FLURRIES AND SLIGHT CHANCE OF RAIN
THIS MORNING, THEN CHANCE OF FLURRIES THIS AFTERNOON. WAVES 7 TO
10 FT OCCASIONALLY TO 13 FT.
TONIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT. WAVES
7 TO 10 FT OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
MONDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO 15 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 1 TO 3 FT.
MONDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 3 FT BUILDING TO 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
EAST WINDS 10 TO 20 KT. 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.
LMZ761-222115-
MAFOR 2216/
MICHIGAN NORTH 13840 12830 12820 11710. WAVES 5 TO 9 FEET THIS
AFTERNOON. WAVES 5 TO 8 FEET SUBSIDING TO 3 TO 6 FEET TONIGHT.
WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET MONDAY MORNING.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...14850 11850 11830
12820. WAVES 6 TO 9 FEET BUILDING TO 8 TO 11 FEET THIS AFTERNOON.
WAVES 7 TO 11 FEET SUBSIDING TO 5 TO 8 FEET TONIGHT. WAVES 4 TO 7
FEET SUBSIDING TO 3 TO 6 FEET MONDAY MORNING.
PATTERSON
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MKX/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page