549
FZUS63 KMKX 081951
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
251 PM CDT SAT AUG 8 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
WINDS WILL BECOME SOUTHERLY BY THIS EVENING AS A LOW PRESSURE
TROUGH AROUND 29.8 INCHES APPROACHES FROM THE MINNESOTA ARROWHEAD.
AN UNSETTLED WEATHER PATTERN WILL SET UP OVER THE UPPER GREAT
LAKES ALL WEEK WHERE WEAK WAVES OF LOW PRESSURE WILL CROSS THE
REGION AND PRODUCE ROUNDS OF THUNDERSTORMS AT TIMES. THE FIRST
ROUND OF WEAKENING STORMS SHOULD ARRIVE IN SOUTHERN LAKE MICHIGAN
LATE SUNDAY MORNING, AND ADDITIONAL STORMS ARE POSSIBLE THERE
SUNDAY NIGHT.
LMZ261-362-364-366-563-565-567-868-090315-
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-
251 PM CDT SAT AUG 8 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TONIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO
20 KT. WAVES 1 TO 3 FT.
SUNDAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO 25 KT,
THEN BECOMING SOUTHWEST 10 TO 20 KT LATE. CHANCE OF SHOWERS IN
THE AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
SUNDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT LATE IN THE EVENING, THEN BECOMING WEST 5 TO 10 KT AFTER
MIDNIGHT BECOMING NORTHWEST LATE. PATCHY FOG OVERNIGHT. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
MONDAY
NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST. PATCHY
DENSE FOG IN THE MORNING. WAVES 1 TO 2 FT.
MONDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KT BECOMING NORTHEAST.
WAVES 1 FT OR LESS.
TUESDAY
NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
CHANCE OF SHOWERS IN THE MORNING. WAVES 1 FT OR LESS.
TUESDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES NEARLY CALM.
WEDNESDAY
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO
20 KT. WAVES 1 FT OR LESS.
THURSDAY
NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 1 TO 3 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-090315-
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-
251 PM CDT SAT AUG 8 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUNDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS, MAINLY IN THE LATE MORNING
AND EARLY AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
SUNDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO
20 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
MONDAY
NORTHWEST WINDS 10 TO 15 KT VEERING TO NORTH. CHANCE OF
SHOWERS IN THE MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. WAVES 1 TO 3 FT.
MONDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN CHANCE OF SHOWERS OVERNIGHT.
WAVES 1 FT OR LESS.
TUESDAY
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN CHANCE
OF SHOWERS IN THE AFTERNOON. WAVES 1 FT OR LESS.
TUESDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT. CHANCE OF SHOWERS.
WAVES 1 FT OR LESS.
WEDNESDAY
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES
1 FT OR LESS.
THURSDAY
NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
LMZ761-090315-
MAFOR 0822/
MICHIGAN NORTH 11410 14510 11520 11530 11430. A CHANCE OF SHOWERS
SUNDAY AFTERNOON. WAVES 2 FEET OR LESS TONIGHT. WAVES 1 TO 3 FEET
BUILDING TO 2 TO 4 FEET SUNDAY.
MICHIGAN SOUTH 11400 11410 12510 11410 11420 11426 11420. A
CHANCE OF THUNDERSTORMS SUNDAY AFTERNOON. WAVES 2 FEET OR LESS
TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET SUNDAY.
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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