520
FZUS63 KMKX 092022
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
322 PM CDT TUE SEP 9 2025
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 CONTINUE TO MOVE EAST OUT OF
THE GREAT LAKES AND INTO THE NEW ENGLAND STATES TODAY. MEANWHILE
A WAVE OF LOW PRESSURE WILL MOVE ACROSS LAKE SUPERIOR LATER TODAY,
WITH BREEZY SOUTH WINDS AHEAD OF THE WAVE, ESPECIALLY ACROSS THE
NORTH HALF OF THE LAKE. THE BREEZY SOUTH WINDS WILL BECOME MUCH
LIGHTER TONIGHT AND WEDNESDAY. LIGHT NORTHEAST TO EAST WINDS WILL
PREVAIL ON THURSDAY, AFTER A WEAK FRONTAL PASSAGE. WINDS WILL
BECOME SOUTH TO SOUTHEAST ON FRIDAY, WITH HIGH PRESSURE AROUND
30.3 INCHES WELL TO THE NORTHEAST OF THE REGION.
LMZ261-362-364-366-563-565-567-868-100315-
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-
322 PM CDT TUE SEP 9 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
TONIGHT
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 15 KT.
CHANCE OF SPRINKLES. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
SUBSIDING TO 3 TO 5 FT.
WEDNESDAY
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES
1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
WEDNESDAY NIGHT
NORTHEAST WINDS LESS THAN 10 KT INCREASING TO
5 TO 10 KT. WAVES 1 FT OR LESS.
THURSDAY
NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 FT OR LESS.
THURSDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT BECOMING SOUTHEAST
5 TO 10 KT. WAVES 1 FT OR LESS.
FRIDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT. WAVES
1 TO 2 FT.
FRIDAY NIGHT
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
15 KT. CHANCE OF SHOWERS. WAVES 1 TO 2 FT.
SATURDAY
SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
SUNDAY
EAST WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES 1 TO
2 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-100315-
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-
322 PM CDT TUE SEP 9 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH 5 TO 10 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
WEDNESDAY
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES
1 TO 2 FT.
WEDNESDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT. WAVES 1 FT OR
LESS.
THURSDAY
NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 2 FT.
THURSDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT BECOMING EAST 5 TO
10 KT. WAVES 1 TO 2 FT.
FRIDAY
SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
FRIDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES
1 TO 3 FT.
SATURDAY
SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
SUNDAY
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT.
WAVES 1 TO 2 FT.
LMZ761-100315-
MAFOR 0922/
MICHIGAN NORTH 12430 11420 12410 12400 11500. WAVES 3 TO 6 FEET
SUBSIDING TO 1 TO 3 FEET TONIGHT. WAVES 1 TO 3 FEET SUBSIDING TO
1 FOOT OR LESS WEDNESDAY.
MICHIGAN SOUTH 12320 12410 14400. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET TONIGHT. WAVES 1 FOOT OR LESS WEDNESDAY.
PATTERSON
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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