204
FZUS63 KMKX 230215
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
915 PM 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
GALES CONTINUE OVER THE SOUTHERN THIRD OF LAKE MICHIGAN THIS
EVENING AS SHARP PRESSURE GRADIENT REMAINS OVER THE LAKE. THIS
PRESSURE GRADIENT WILL LINGER INTO EARLY MONDAY, AS LOW PRESSURE
OF 29.6 RETREATS EAST TOWARD THE DELMARVA PENINSULA AND HIGH
PRESSURE OF 30.4 INCHES MOVES IN FROM THE NORTHERN GREAT PLAINS.
A GALE WARNING REMAINS IN EFFECT UNTIL 1AM CDT MONDAY FOR THE
SOUTHERN 3RD OF THE OPEN WATERS FOR GUSTS FROM 35 TO 40 KTS, WITH
A FEW ISOLATED GUSTS TO 45 KTS POSSIBLE.
THE PREVIOUSLY MENTIONED HIGH PRESSURE WILL BUILD INTO THE GREAT
LAKES REGION THE FIRST HALF OF MONDAY, BRINGING DECREASING WINDS
AND THEN BRIEFLY LIGHT AND VARIABLE WINDS MONDAY EVENING AS THE
CENTER OF THE HIGH PRESSURE PASSES OVER THE LAKE. 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.
LMZ261-362-364-366-563-565-567-868-230915-
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-
915 PM CDT SUN MAR 22 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
NORTH WINDS 15 TO 25 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 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 30 KT.
WAVES 1 TO 3 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
TUESDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 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 2 TO 4 FT.
WEDNESDAY NIGHT
EAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
THURSDAY
SOUTH WINDS 10 TO 20 KT VEERING TO NORTHWEST. CHANCE
OF RAIN AND SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
FRIDAY
NORTH WINDS TO 30 KT BECOMING NORTHWEST 10 TO 20 KT.
WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
LMZ080-671-673-675-777-779-872-874-876-878-230915-
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-
915 PM CDT SUN MAR 22 2026
PORT WASHINGTON WI TO WHITEHALL MI SOUTH...
..GALE WARNING IN EFFECT UNTIL 1 AM CDT MONDAY
REST OF TONIGHT
NORTH GALES TO 35 KT DIMINISHING TO 15 TO
25 KT. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT SUBSIDING TO 7 TO
10 FT OCCASIONALLY TO 13 FT.
MONDAY
NORTH WINDS 15 TO 25 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 NIGHT
NORTHEAST WINDS 10 TO 15 KT VEERING TO SOUTH
10 TO 20 KT. WAVES 3 TO 5 FT SUBSIDING 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. WAVES 2 TO 4 FT.
WEDNESDAY
SOUTHEAST WINDS 10 TO 20 KT BECOMING EAST. WAVES
2 TO 4 FT.
WEDNESDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT
BUILDING TO 3 TO 5 FT.
THURSDAY
SOUTH WINDS 10 TO 20 KT VEERING TO WEST. CHANCE OF
RAIN. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
FRIDAY
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
12 TO 16 FT OCCASIONALLY TO 21 FT SUBSIDING TO 8 TO 11 FT
OCCASIONALLY TO 14 FT.
LMZ669-870-230915-
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-
915 PM CDT SUN MAR 22 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH TO PORT WASHINGTON WI TO
WHITEHALL MI...
REST OF TONIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO
25 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. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
EAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 15 KT
LATE IN THE EVENING, THEN INCREASING TO 10 TO 20 KT AFTER
MIDNIGHT INCREASING TO 15 TO 25 KT LATE. WAVES 1 TO 3 FT BUILDING
TO 2 TO 4 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 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 2 TO 4 FT.
WEDNESDAY NIGHT
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST.
WAVES 3 TO 5 FT.
THURSDAY
SOUTH WINDS 10 TO 20 KT VEERING TO NORTHWEST. CHANCE
OF RAIN. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
FRIDAY
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
10 TO 14 FT OCCASIONALLY TO 18 FT SUBSIDING TO 6 TO 9 FT
OCCASIONALLY TO 12 FT.
LMZ761-230915-
MAFOR 2304/
MICHIGAN NORTH 12830 11820 13720 11610 11410. WAVES 4 TO 7 FEET
SUBSIDING TO 3 TO 6 FEET OVERNIGHT. WAVES 3 TO 5 FEET SUBSIDING
TO 1 TO 3 FEET MONDAY. WAVES 2 FEET OR LESS MONDAY EVENING.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...11850 11840 12830 12820
11110 11210. WAVES 9 TO 12 FEET SUBSIDING TO 7 TO 10 FEET
OVERNIGHT. WAVES 5 TO 8 FEET SUBSIDING TO 3 TO 6 FEET MONDAY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET MONDAY EVENING.
CMILLER
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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