617
FZUS63 KMKX 071425
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
825 AM CST FRI NOV 7 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
LOW PRESSURE AROUND 29.4 INCHES OVER EASTERN LAKE SUPERIOR THIS
MORNING WILL DEEPEN SLIGHTLY AS IT MOVES TO SOUTHWEST QUEBEC BY
EARLY THIS EVENING. BRISK WESTERLY WINDS ARE EXPECTED FOR THE
REMAINDER OF THE MORNING, BUT WILL REMAIN BELOW GALES. A COLD
FRONT WILL THEN SHIFT WINDS TO NORTHWESTERLY THIS AFTERNOON THEN
NORTHERLY TONIGHT, BUT WITH DIMINISHING WINDS AS WEAK HIGH
PRESSURE BUILDS INTO NORTHERN WISCONSIN.
ANOTHER LOW PRESSURE AREA WILL DEVELOP AND TRACK FROM ILLINOIS
ACROSS THE NORTHERN OHIO RIVER VALLEY SATURDAY NIGHT AND THE MID
ATLANTIC STATES ON SUNDAY. NORTH TO NORTHWEST GALES MAY DEVELOP
LATER SATURDAY NIGHT INTO SUNDAY ACROSS THE SOUTHERN HALF OF THE
OPEN WATERS. NORTHWEST TO NORTH WINDS REMAIN GUSTY INTO MONDAY,
WITH SOME GALES POSSIBLE.
LMZ261-362-364-366-563-565-567-868-072215-
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-
825 AM CST FRI NOV 7 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
WEST WINDS TO 30 KT BECOMING NORTHWEST. SLIGHT
CHANCE OF RAIN. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING
TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
TONIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 10 TO 15 KT.
SLIGHT CHANCE OF RAIN IN THE EVENING. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
SATURDAY
NORTH WINDS 5 TO 10 KT. WAVES 2 TO 4 FT SUBSIDING TO
1 TO 2 FT.
SATURDAY NIGHT
NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. RAIN AND SNOW LIKELY. WAVES 1 TO 3 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
SUNDAY
NORTH WINDS TO 30 KT. CHANCE OF SNOW SHOWERS IN THE
MORNING, THEN SNOW SHOWERS LIKELY IN THE AFTERNOON. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT.
SUNDAY NIGHT
NORTH WINDS TO 30 KT. SNOW SHOWERS LIKELY. WAVES
7 TO 10 FT OCCASIONALLY TO 13 FT.
MONDAY
NORTH WINDS TO 30 KT BECOMING NORTHWEST. CHANCE OF SNOW
SHOWERS. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
TUESDAY
SOUTHWEST WINDS TO 30 KT. CHANCE OF RAIN AND SNOW.
WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT BUILDING TO 10 TO 14 FT
OCCASIONALLY TO 18 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-072215-
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-
825 AM CST FRI NOV 7 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
WEST WINDS TO 30 KT BECOMING NORTHWEST. SLIGHT
CHANCE OF RAIN THIS AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO
13 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
TONIGHT
NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH LATE IN THE
EVENING, THEN DIMINISHING TO 10 TO 20 KT AFTER MIDNIGHT BECOMING
NORTHEAST 10 TO 15 KT LATE. SLIGHT CHANCE OF RAIN. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
SATURDAY
NORTHEAST WINDS 10 TO 15 KT. CHANCE OF RAIN IN THE
AFTERNOON. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
SATURDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH TO
30 KT OVERNIGHT. RAIN IN THE EVENING, THEN RAIN LIKELY OVERNIGHT.
WAVES 3 TO 5 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
SUNDAY
NORTH WINDS TO 30 KT BECOMING NORTHWEST GALES TO 35 KT.
RAIN SHOWERS LIKELY WITH A CHANCE OF SNOW SHOWERS. WAVES 8 TO
11 FT OCCASIONALLY TO 14 FT BUILDING TO 8 TO 12 FT OCCASIONALLY
TO 16 FT.
SUNDAY NIGHT
NORTHWEST GALES TO 35 KT BECOMING NORTH. SNOW
SHOWERS LIKELY. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT.
MONDAY
NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS. WAVES
10 TO 14 FT OCCASIONALLY TO 18 FT.
TUESDAY
SOUTHWEST GALES TO 35 KT. CHANCE OF RAIN AND SNOW.
WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT.
LMZ761-072215-
MAFOR 0717/
MICHIGAN NORTH 12740 11840 12830 12810 11800. WAVES 4 TO 7 FEET
SUBSIDING TO 3 TO 6 FEET THIS AFTERNOON. WAVES 3 TO 6 FEET
TONIGHT. WAVES 1 TO 3 FEET SATURDAY MORNING.
MICHIGAN SOUTH 12640 11730 11830 11820 11810 11110 11100. WAVES 5
TO 8 FEET THIS AFTERNOON. WAVES 3 TO 6 FEET TONIGHT. WAVES 2 TO 4
FEET SATURDAY MORNING.
DDV
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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