752
FZUS63 KMKX 171407
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
907 AM CDT THU JUL 17 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
MODEST TO BREEZY NORTHERLY WINDS WILL GRADUALLY WEAKEN THROUGH THE
DAY AS HIGH PRESSURE AROUND 30.1 INCHES MOVES FROM NORTHERN
MINNESOTA TO NORTHERN LAKE MICHIGAN BY THIS EVENING. THE HIGH WILL
THEN MOVE TO THE MID ATLANTIC STATES BY FRIDAY NIGHT WHILE LOW
PRESSURE AROUND 29.8 INCHES MOVES INTO THE UPPER MISSISSIPPI RIVER
VALLEY. THUS LIGHT TO MODEST NORTHEAST WINDS THIS EVENING WILL
BECOME LIGHT AND VARIABLE LATE TONIGHT INTO FRIDAY EVENING. LIGHT
TO MODEST SOUTHERLY WINDS WILL THEN DEVELOP SATURDAY MORNING AHEAD
OF THE APPROACHING WEAK LOW WITH WINDS TURNING NORTHERLY AGAIN
AFTER THE LOWS PASSAGE BY SATURDAY EVENING. LIGHT TO MODEST
NORTHEAST WINDS WILL THEN PREVAIL LATE SATURDAY NIGHT INTO SUNDAY
WHILE ANOTHER HIGH PRESSURE AREA AROUND 30.1 INCHES SETS UP OVER
LAKE SUPERIOR.
LMZ261-362-364-366-563-565-567-868-172130-
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-
907 AM CDT THU JUL 17 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
TONIGHT
NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT, THEN VEERING TO EAST LATE. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT SUBSIDING TO 1 TO 3 FT.
FRIDAY
SOUTHEAST WINDS 5 TO 10 KT VEERING TO SOUTHWEST. WAVES
1 TO 2 FT.
FRIDAY NIGHT
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH. CHANCE
OF SHOWERS. WAVES 1 FT OR LESS.
SATURDAY
SOUTH WINDS 10 TO 15 KT VEERING TO NORTHWEST 10 TO
20 KT. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 TO 2 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
SUNDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
2 FT.
MONDAY
SOUTHEAST WINDS 10 TO 20 KT BECOMING EAST. WAVES 1 TO
3 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-172130-
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-
907 AM CDT THU JUL 17 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
TONIGHT
NORTH WINDS 10 TO 20 KT BECOMING EAST 10 TO 15 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
FRIDAY
EAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
FRIDAY NIGHT
EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST. CHANCE
OF SHOWERS OVERNIGHT. WAVES 1 TO 2 FT.
SATURDAY
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS IN THE MORNING, THEN CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. WAVES 1 TO 2 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST.
WAVES 1 TO 3 FT.
SUNDAY
NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
MONDAY
SOUTHEAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES
2 TO 4 FT.
LMZ761-172130-
MAFOR 1716/
MICHIGAN NORTH 11830 12820 12110 11200 11300 11400. WAVES 4 TO 7
FEET SUBSIDING TO 3 TO 6 FEET THIS AFTERNOON. WAVES 3 TO 5 FEET
SUBSIDING TO 1 TO 3 FEET TONIGHT. WAVES 2 FEET OR LESS FRIDAY
MORNING.
MICHIGAN SOUTH 14820 12110 12210. WAVES 4 TO 7 FEET THIS
AFTERNOON. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET TONIGHT.
WAVES 1 TO 3 FEET FRIDAY MORNING.
GEHRING
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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