659
FZUS63 KMKX 042026
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
226 PM CST WED FEB 4 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 OF 30.5 INCHES OVERHEAD THIS AFTERNOON WILL SHIFT
TO THE SOUTHEAST THIS EVENING INTO TONIGHT AHEAD OF AN
APPROACHING SHORTWAVE. LIGHT WINDS WILL PICK UP LATER TONIGHT
INTO THURSDAY OUT OF THE SOUTHWEST AS THE PRESSURE GRADIENT
TIGHTENS.
LOW PRESSURE OF 29.4 INCHES WILL HEAD EASTWARD THROUGH JAMES
BAY THURSDAY NIGHT AND CONTINUE EASTWARD INTO QUEBEC ON FRIDAY,
DRAGGING A COLD FRONT THROUGH THE GREAT LAKES REGION. MODERATE
WESTERLY WINDS THURSDAY NIGHT WILL INCREASE OUT OF THE NORTHWEST
FRIDAY BEHIND THE FRONT. A GALE WATCH IS IN EFFECT FOR THE OPEN
WATERS FROM MID-MORNING FRIDAY THROUGH THE EVENING HOURS.
ADDITIONALLY, A PERIOD OF HEAVY FREEZING SPRAY IS LOOKING LIKELY
FROM FRIDAY AFTERNOON THROUGH FRIDAY NIGHT.
LMZ261-362-364-366-563-565-567-868-050445-
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-
226 PM CST WED FEB 4 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING...
TONIGHT
WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO 15 KT.
SLIGHT CHANCE OF SNOW THIS EVENING. WAVES 1 TO 3 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF SNOW. WAVES 2 TO 4 FT BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
WEST WINDS 10 TO 20 KT. SNOW OVERNIGHT. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT.
FRIDAY
NORTHWEST GALES TO 35 KT BECOMING NORTH GALES TO 40 KT.
CHANCE OF SNOW. FREEZING SPRAY IN THE AFTERNOON. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT BUILDING TO 12 TO 16 FT OCCASIONALLY TO
21 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO 30 KT
OVERNIGHT. CHANCE OF SNOW IN THE EVENING. HEAVY FREEZING SPRAY.
WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT.
SATURDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO
5 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY
SOUTH WINDS 10 TO 20 KT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
MONDAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 10 TO 15 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-050445-
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-
226 PM CST WED FEB 4 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
EVENING...
TONIGHT
NORTHWEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO
15 KT. WAVES 1 TO 3 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW. WAVES
2 TO 4 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST.
CHANCE OF SNOW IN THE EVENING, THEN SNOW LIKELY OVERNIGHT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT.
FRIDAY
NORTHWEST GALES TO 35 KT BECOMING NORTH GALES TO 40 KT.
CHANCE OF SNOW IN THE MORNING. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT BUILDING TO 12 TO 16 FT OCCASIONALLY TO 21 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO 30 KT
OVERNIGHT. FREEZING SPRAY. WAVES 12 TO 16 FT OCCASIONALLY TO
21 FT.
SATURDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. FREEZING SPRAY IN THE MORNING. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY
SOUTH WINDS 10 TO 20 KT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
MONDAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT.
LMZ761-050445-
MAFOR 0423/
MICHIGAN NORTH 12600 11500 11510 11520 11537 12530. WAVES 2 FEET
OR LESS TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 5 FEET
THURSDAY. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
MICHIGAN SOUTH 11700 12600 12510 11527 12520. WAVES 1 TO 3 FEET
TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 6 FEET THURSDAY. WAVE
HEIGHTS ARE FOR ICE FREE AREAS
DDV
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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