559
FZUS63 KMKX 141943
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
243 PM CDT FRI AUG 14 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
PERIODS OF STORMS ARE EXPECTED TO CROSS THE SOUTHERN HALF OF LAKE
MICHIGAN THROUGH SUNDAY AS A FRONT REMAINS STALLED SOUTH OVER
ILLINOIS AND INDIANA. LOW PRESSURE OF 29.7 INCHES OVER KANSAS WILL
TRACK TO THE NORTHEAST AND EAST TOWARD SOUTHERN LAKE MICHIGAN
TONIGHT INTO SATURDAY. THIS LOW SHOULD HELP TO BUMP UP WINDS AND
WAVES ACROSS THE SOUTHERN TWO THIRDS OF LAKE MICHIGAN INTO SATURDAY.
BEYOND THIS SYSTEM, A BROAD RIDGE OF HIGH PRESSURE OF 30.1 INCHES
WILL PUSH INTO THE GREAT LAKES EARLY NEXT WEEK BEFORE ANOTHER
POTENTIAL FRONT MOVES THROUGH THE REGION MIDWEEK.
LMZ261-362-364-563-150315-
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
243 PM CDT FRI AUG 14 2026
STURGEON BAY WI TO POINT BETSIE MI NORTH...
TONIGHT
NORTHEAST WINDS 10 TO 15 KT BECOMING EAST. WAVES 1 TO
3 FT.
SATURDAY
EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
SATURDAY NIGHT
EAST WINDS 10 TO 20 KT VEERING TO SOUTHWEST
10 TO 15 KT. CHANCE OF SHOWERS OVERNIGHT. WAVES 1 TO 3 FT.
SUNDAY
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST 15 TO 25 KT.
CHANCE OF SHOWERS IN THE MORNING. WAVES 1 TO 2 FT BUILDING TO
1 TO 3 FT.
SUNDAY NIGHT
NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 2 TO 4 FT.
MONDAY
NORTHWEST WINDS 10 TO 15 KT BACKING TO SOUTHWEST 10 TO
20 KT. WAVES 1 TO 2 FT.
MONDAY NIGHT
SOUTHWEST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 2 FT.
TUESDAY
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
2 TO 4 FT.
WEDNESDAY
NORTH WINDS 15 TO 25 KT BECOMING NORTHWEST TO 30 KT.
CHANCE OF SHOWERS. WAVES 1 TO 3 FT.
LMZ366-565-567-669-868-870-150315-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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 SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
243 PM CDT FRI AUG 14 2026
STURGEON BAY WI TO POINT BETSIE MI SOUTH TO PORT WASHINGTON WI TO
WHITEHALL MI...
TONIGHT
NORTHEAST WINDS 15 TO 25 KT BECOMING EAST 10 TO 20 KT.
SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES 3 TO 5 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 20 KT. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE MORNING, THEN SLIGHT CHANCE OF SHOWERS
IN THE AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KT VEERING TO WEST
10 TO 15 KT. CHANCE OF SHOWERS OVERNIGHT. WAVES 3 TO 5 FT
SUBSIDING TO 1 TO 3 FT.
SUNDAY
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES 1 TO
3 FT.
SUNDAY NIGHT
NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
MONDAY
NORTH WINDS 10 TO 20 KT BECOMING WEST. WAVES 1 TO 3 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
WEDNESDAY
NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH TO 30 KT.
CHANCE OF SHOWERS. WAVES 3 TO 5 FT.
LMZ080-671-673-675-777-779-872-874-876-878-150315-
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-
243 PM CDT FRI AUG 14 2026
PORT WASHINGTON WI TO WHITEHALL MI SOUTH...
TONIGHT
NORTH WINDS 10 TO 20 KT VEERING TO SOUTHEAST. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 3 TO 5 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING, THEN CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KT VEERING TO WEST.
CHANCE OF SHOWERS OVERNIGHT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO
3 FT.
SUNDAY
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
SHOWERS. WAVES 1 TO 3 FT.
SUNDAY NIGHT
NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
MONDAY
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
TUESDAY
SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
WEDNESDAY
NORTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SHOWERS. WAVES 3 TO 5 FT.
LMZ761-150315-
MAFOR 1422/
MICHIGAN NORTH 11130 12120 12220 11320 12330. WAVES 2 TO 4 FEET
TONIGHT. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET SATURDAY.
MICHIGAN SOUTH 11830 11120 12220 11320 13330. A CHANCE OF SHOWERS
AND THUNDERSTORMS SATURDAY MORNING, THEN A CHANCE OF SHOWERS
SATURDAY AFTERNOON. WAVES 2 TO 4 FEET TONIGHT. WAVES 3 TO 5 FEET
SATURDAY.
QUIGLEY
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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