209
FZUS63 KMKX 171413
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
913 AM CDT SAT OCT 17 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
STRONG HIGH PRESSURE AROUND 30.6 INCHES OVER THE CENTRAL PLAINS
WILL SLOWLY MOVE EAST INTO THE OHIO RIVER VALLEY TODAY. STRONG
LOW PRESSURE AROUND 29.2 INCHES WILL DEVELOP IN SOUTH CENTRAL
CANADA TODAY, SHIFTING TOWARD AND INTO HUDSON BAY TONIGHT INTO
SUNDAY AND DEEPENING TO AROUND 29.0 INCHES.
THIS WILL BRING SOUTHWEST GALES TO FAR NORTHERN PORTIONS OF LAKE
MICHIGAN LATER TONIGHT INTO SUNDAY NIGHT. GALE WARNING IS IN
EFFECT DURING THIS PERIOD FOR THE NORTHERN THIRD OF LAKE MICHIGAN.
HIGH PRESSURE AROUND 30.5 INCHES SHOULD DEVELOP EAST NORTHEAST OF
THE REGION NEXT WEEK, BRINGING DRY CONDITIONS AND LIGHT TO MODEST
WINDS.
LMZ261-362-364-563-172130-
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
913 AM CDT SAT OCT 17 2026
STURGEON BAY WI TO POINT BETSIE MI NORTH...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY
NIGHT...
REST OF TODAY
WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST TO 30
KT. WAVES 1 TO 3 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
TONIGHT
SOUTHWEST WINDS TO 30 KT INCREASING TO GALES TO 40 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT BUILDING TO 8 TO 11 FT
OCCASIONALLY TO 14 FT.
SUNDAY
SOUTHWEST GALES TO 40 KT. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT.
SUNDAY NIGHT
SOUTHWEST GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT SUBSIDING TO 7 TO
10 FT OCCASIONALLY TO 13 FT.
MONDAY
SOUTHWEST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KT BACKING TO SOUTHEAST.
WAVES 1 TO 3 FT.
TUESDAY
SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
LMZ366-565-567-868-172130-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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-
913 AM CDT SAT OCT 17 2026
STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...
REST OF TODAY
WEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT
LATE THIS MORNING, THEN BECOMING SOUTHWEST 15 TO 25 KT EARLY THIS
AFTERNOON INCREASING TO 30 KT LATE. WAVES 2 TO 4 FT BUILDING TO
4 TO 7 FT OCCASIONALLY TO 9 FT.
TONIGHT
SOUTHWEST WINDS TO 30 KT. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
SUNDAY
SOUTHWEST WINDS TO 30 KT. WAVES 8 TO 12 FT OCCASIONALLY
TO 16 FT.
SUNDAY NIGHT
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25
KT OVERNIGHT. WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO
6 TO 9 FT OCCASIONALLY TO 12 FT.
MONDAY
SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT DIMINISHING TO LESS THAN
10 KT. WAVES 1 TO 2 FT.
TUESDAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 FT
OR LESS.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
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-
913 AM CDT SAT OCT 17 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
NORTH WINDS 5 TO 10 KT BECOMING WEST 10 TO 20 KT
LATE THIS MORNING, THEN BECOMING SOUTHWEST 15 TO 25 KT EARLY THIS
AFTERNOON INCREASING TO 30 KT LATE. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
TONIGHT
SOUTHWEST WINDS TO 30 KT. WAVES 6 TO 9 FT OCCASIONALLY
TO 12 FT.
SUNDAY
SOUTHWEST WINDS TO 30 KT BECOMING SOUTH. WAVES 7 TO 10
FT OCCASIONALLY TO 13 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO 14
FT.
SUNDAY NIGHT
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25
KT OVERNIGHT. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT SUBSIDING TO
5 TO 8 FT OCCASIONALLY TO 10 FT.
MONDAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 10 TO 15 KT.
WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST LESS
THAN 10 KT. WAVES 1 TO 2 FT.
TUESDAY
SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
LMZ761-172130-
MAFOR 1716/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11620 12530 13540
12550. WAVES 2 TO 4 FEET BUILDING TO 5 TO 8 FEET THIS AFTERNOON.
WAVES 5 TO 9 FEET BUILDING TO 7 TO 10 FEET TONIGHT. WAVES 8 TO 12
FEET SUNDAY MORNING.
MICHIGAN SOUTH 11520 11530 14540 11540 11550. WAVES 3 TO 5 FEET
SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO 5 FEET THIS
AFTERNOON. WAVES 3 TO 6 FEET BUILDING TO 5 TO 8 FEET TONIGHT.
WAVES 6 TO 10 FEET SUNDAY MORNING.
WOOD
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MKX/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page