474
FZUS63 KMKX 090556
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1256 AM CDT FRI OCT 9 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
HIGH PRESSURE AROUND 30.1 INCHES WILL MOVE ACROSS THE REGION
OVERNIGHT. WINDS WILL BECOME SOUTHEAST ON FRIDAY AND SOUTH FRIDAY
NIGHT, AS THE HIGH MOVES TO THE EAST AND LOW PRESSURE AROUND 29.2
INCHES DEVELOPS THE NORTHERN PLAINS. THE TIGHT PRESSURE GRADIENT
OVER LAKE MICHIGAN WILL PRODUCE BREEZY SOUTHERLY WINDS UP TO 30
KNOTS FROM FRIDAY NIGHT THROUGH SUNDAY MORNING. A FEW GALE FORCE
GUSTS MAY OCCUR IN THE NORTHERN HALF OF THE LAKE SATURDAY
AFTERNOON AND EVENING. GALE WARNINGS AREN'T EXPECTED AT THIS TIME.
LIGHTER WINDS ARE EXPECTED MONDAY, AS A WEAK LOW PRESSURE TROUGH
AROUND 29.7 INCHES SLOWLY MOVES FROM MINNESOTA TO WISCONSIN. LOOK
FOR GUSTY NORTHWEST TO NORTH WINDS TO DEVELOP MONDAY NIGHT INTO
TUESDAY AFTER THE PASSAGE OF A COLD FRONT, AS HIGH PRESSURE AROUND
30.1 INCHES BUILDS INTO THE UPPER MIDWEST.
LMZ261-362-364-366-563-565-567-868-091515-
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-
1256 AM CDT FRI OCT 9 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TODAY
NORTHWEST WINDS 10 TO 15 KT VEERING TO EAST. WAVES 1 TO
2 FT.
TONIGHT
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST 15 TO 25 KT.
WAVES 1 TO 3 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY
SOUTHEAST WINDS TO 30 KT BECOMING SOUTH. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO
13 FT.
SATURDAY NIGHT
SOUTH WINDS TO 30 KT. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
SUNDAY
SOUTH WINDS 15 TO 25 KT. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES
3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
MONDAY
SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES
2 TO 4 FT.
TUESDAY
NORTH WINDS 15 TO 25 KT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-091515-
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-
1256 AM CDT FRI OCT 9 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH LATE THIS
MORNING, THEN BECOMING SOUTHEAST EARLY THIS AFTERNOON BECOMING
10 TO 20 KT LATE. WAVES 1 TO 3 FT.
TONIGHT
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO
25 KT. SLIGHT CHANCE OF SHOWERS IN THE EVENING. WAVES 3 TO 5 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY
SOUTH WINDS TO 30 KT. WAVES 7 TO 10 FT OCCASIONALLY
TO 13 FT.
SATURDAY NIGHT
SOUTH WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
SUNDAY NIGHT
SOUTH WINDS 10 TO 15 KT. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 2 FT.
MONDAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO 25 KT.
WAVES 2 TO 4 FT.
TUESDAY
NORTH WINDS 15 TO 25 KT. WAVES 6 TO 9 FT OCCASIONALLY
TO 12 FT.
LMZ761-091515-
MAFOR 0910/
MICHIGAN NORTH 11610 11710 11810 12210 11220 11320 11330. WAVES 2
FEET OR LESS TODAY. WAVES 1 TO 3 FEET BUILDING TO 3 TO 6 FEET
TONIGHT.
MICHIGAN SOUTH 11500 11400 11300 11310 13320 11330. WAVES 2 FEET
OR LESS TODAY. WAVES 1 TO 3 FEET BUILDING TO 3 TO 6 FEET TONIGHT.
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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