724
FZUS63 KMKX 041404
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
904 AM CDT SAT JUL 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 AROUND 30.4 INCHES WILL REMAIN WELL NORTH OF THE
REGION TODAY AND TONIGHT, SHIFTING EAST TO OVER JAMES BAY ON
SUNDAY. WEAK LOW PRESSURE AROUND 29.9 INCHES WILL DEVELOP AND
SLOWLY MOVE EAST ACROSS NORTHERN ILLINOIS INTO INDIANA DURING THIS
TIME. SCATTERED SHOWERS AND SOME THUNDERSTORMS ARE EXPECTED AT
TIMES THROUGH THE WEEKEND. FOG, POSSIBLY DENSE AT TIMES, WILL BE
POSSIBLE MAINLY OVER THE NORTHERN PORTIONS OF THE LAKE, AS WARM
AND HUMID AIR FLOWS OVER THE RELATIVELY COOLER LAKE WATERS. SHOWER
AND THUNDERSTORM CHANCES WILL END SUNDAY NIGHT, WITH QUIETER
WEATHER FOR THE START OF NEXT WEEK.
LMZ261-362-364-366-563-565-567-868-042115-
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-
904 AM CDT SAT JUL 4 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE THIS
MORNING. PATCHY FOG. WAVES 1 TO 2 FT.
TONIGHT
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. PATCHY FOG IN THE EVENING. WAVES 1 TO 2 FT.
SUNDAY
NORTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
SUNDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 5 TO
10 KT OVERNIGHT. WAVES 2 TO 4 FT.
MONDAY
NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
MONDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 5 TO
10 KT. WAVES 1 TO 3 FT.
TUESDAY
NORTHWEST WINDS 10 TO 15 KT BACKING TO SOUTHWEST 10 TO
20 KT. WAVES 1 FT OR LESS.
WEDNESDAY
SOUTHWEST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 2 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-042115-
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-
904 AM CDT SAT JUL 4 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
WEST WINDS 5 TO 10 KT INCREASING TO 10 TO 20 KT
EARLY THIS AFTERNOON, THEN VEERING TO NORTH LATE. PATCHY FOG.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
TONIGHT
NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT. PATCHY FOG. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
WAVES 1 TO 2 FT.
SUNDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO 20 KT.
PATCHY FOG IN THE MORNING. WAVES 1 TO 3 FT.
SUNDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT.
MONDAY
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
MONDAY NIGHT
NORTH WINDS 10 TO 20 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 3 FT.
TUESDAY
NORTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 2 FT.
WEDNESDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 FT OR LESS.
LMZ761-042115-
MAFOR 0416/
MICHIGAN NORTH 11110 12120 14110 11110. WAVES 2 FEET OR LESS.
MICHIGAN SOUTH 11610 12820 12810 13110. WAVES 2 FEET OR LESS.
CRONCE
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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