481
FZUS63 KMKX 090900
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
300 AM CST TUE DEC 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
LOW PRESSURE AROUND 29.7 INCHES OVER LAKE SUPERIOR THIS MORNING
HAS BROUGHT SOUTHWEST GALES TO THE NORTHERN HALF OF THE LAKE THIS
MORNING WITH GALE WARNING IN EFFECT UNTIL 12Z THIS MORNING. THE
WINDS WILL GRADUALLY WEAKEN OVER THE NEXT FEW HOURS TO BELOW GALE
FORCE.
A MUCH STRONGER LOW AROUND 29.2 INCHES WILL THEN TRACK FROM
MINNESOTA ACROSS SOUTHERN LAKE MI AND INTO LOWER MI TONIGHT.
SOUTHWEST TO WESTERLY GALES WILL DEVELOP AHEAD OF THE LOW OVER
THE SOUTHERN THIRD OF THE LAKE TONIGHT, FOLLOWED BY THE POTENTIAL
FOR NORTHWEST TO NORTHERLY GALES ON WEDNESDAY AFTER THE LOW
PASSES. THE NORTHWEST GALES WILL BRING MORE WIDESPREAD GALES
ACROSS THE SOUTHERN TWO THIRDS OF THE LAKE. A GALE WARNING IS NOW
IN EFFECT FOR THE SOUTH THIRD STARTING MID EVENING TONIGHT AND
STARTING FOR THE CENTRAL THIRD EARLY WEDNESDAY MORNING (11Z). THE
BRISK WINDS WILL THEN GRADUALLY DIMINISH WEDNESDAY NIGHT. A
PERIOD OF NORTHWESTERLY GALES MAY THEN RETURN FRIDAY NIGHT INTO
SATURDAY AS A STRONG ARCTIC FRONT MOVES THROUGH THE GREAT LAKES
REGION. HEAVY FREEZING SPRAY MAY DEVELOP.
LMZ261-362-364-563-091615-
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-
300 AM CST TUE DEC 9 2025
STURGEON BAY WI TO POINT BETSIE MI NORTH...
..GALE WARNING IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING
TODAY
SOUTHWEST WINDS TO 30 KT BECOMING WEST 15 TO 25 KT LATE
THIS MORNING, THEN DIMINISHING TO 10 TO 20 KT EARLY THIS
AFTERNOON BECOMING WEST 10 TO 20 KT LATE. SNOW THIS MORNING.
WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 3 TO 5 FT.
TONIGHT
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT
LATE IN THE EVENING, THEN BECOMING EAST AFTER MIDNIGHT BECOMING
NORTHEAST TO 30 KT LATE. CHANCE OF SNOW IN THE EVENING, THEN SNOW
AND SLIGHT CHANCE OF RAIN OVERNIGHT. WAVES 3 TO 5 FT BUILDING TO
4 TO 7 FT OCCASIONALLY TO 9 FT.
WEDNESDAY
NORTHEAST WINDS TO 30 KT BECOMING NORTHWEST. CHANCE
OF SNOW IN THE MORNING. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT
SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT.
THURSDAY
NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST.
WAVES 1 TO 3 FT.
FRIDAY
WEST WINDS 10 TO 20 KT INCREASING TO 30 KT. CHANCE OF
SNOW. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
SATURDAY
NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
LMZ669-671-870-872-091615-
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 WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
300 AM CST TUE DEC 9 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH TO NORTH POINT LIGHT WI TO
GRAND HAVEN MI...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY
AFTERNOON...
TODAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF SNOW THIS MORNING. WAVES 8 TO 11 FT OCCASIONALLY TO
14 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
TONIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH TO 30 KT
LATE IN THE EVENING, THEN BECOMING SOUTHWEST GALES TO 35 KT AFTER
MIDNIGHT BECOMING WEST LATE. RAIN AND SNOW. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 8 TO 12 FT OCCASIONALLY TO
16 FT.
WEDNESDAY
NORTHWEST GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. SNOW AND RAIN IN THE MORNING, THEN CHANCE OF SNOW IN THE
AFTERNOON. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 6 TO
9 FT OCCASIONALLY TO 12 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST.
CHANCE OF SNOW. WAVES 3 TO 5 FT.
FRIDAY
WEST WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE OF
SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 6 TO 9 FT
OCCASIONALLY TO 12 FT.
SATURDAY
NORTHWEST WINDS TO 30 KT. FREEZING SPRAY. CHANCE OF
SNOW. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT SUBSIDING TO 8 TO
11 FT OCCASIONALLY TO 14 FT.
LMZ080-673-675-777-779-874-876-878-091615-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
300 AM CST TUE DEC 9 2025
NORTH POINT LIGHT WI TO GRAND HAVEN MI SOUTH...
...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY
AFTERNOON...
TODAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SNOW THIS MORNING, THEN CHANCE OF RAIN THIS AFTERNOON.
WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT SUBSIDING TO 6 TO 9 FT
OCCASIONALLY TO 12 FT.
TONIGHT
SOUTHWEST WINDS TO 30 KT BECOMING SOUTH GALES TO 35 KT
LATE IN THE EVENING, THEN BECOMING SOUTHWEST GALES TO 40 KT AFTER
MIDNIGHT BECOMING WEST LATE. CHANCE OF RAIN. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT BUILDING TO 10 TO 14 FT OCCASIONALLY TO
18 FT.
WEDNESDAY
WEST GALES TO 40 KT BECOMING NORTHWEST GALES TO
35 KT. SNOW AND RAIN IN THE MORNING, THEN CHANCE OF SNOW IN THE
AFTERNOON. WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. CHANCE OF SNOW IN THE EVENING. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO
13 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. CHANCE OF
SNOW IN THE MORNING. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
WEST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. CHANCE OF SNOW. WAVES 3 TO 5 FT.
FRIDAY
WEST WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE OF
SNOW. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 6 TO 9 FT
OCCASIONALLY TO 12 FT.
SATURDAY
NORTHWEST WINDS TO 30 KT. FREEZING SPRAY. CHANCE OF
SNOW. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT SUBSIDING TO 8 TO
11 FT OCCASIONALLY TO 14 FT.
LMZ366-565-567-868-091615-
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-
300 AM CST TUE DEC 9 2025
STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...
..GALE WARNING IN EFFECT UNTIL 6 AM CST EARLY THIS MORNING
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY
AFTERNOON...
TODAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.
SNOW LIKELY THIS MORNING. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
TONIGHT
SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT LATE
IN THE EVENING, THEN INCREASING TO 30 KT AFTER MIDNIGHT VEERING
TO NORTH LATE. SNOW AND RAIN. WAVES 2 TO 4 FT BUILDING TO 6 TO
9 FT OCCASIONALLY TO 12 FT.
WEDNESDAY
NORTH GALES TO 35 KT DIMINISHING TO 30 KT. SNOW
LIKELY IN THE MORNING. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT
BUILDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO
20 KT OVERNIGHT. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT SUBSIDING
TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST.
WAVES 2 TO 4 FT.
FRIDAY
WEST WINDS 10 TO 20 KT INCREASING TO 30 KT. SNOW
LIKELY. WAVES 3 TO 5 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO
10 FT.
SATURDAY
NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
FREEZING SPRAY. CHANCE OF SNOW. WAVES 8 TO 11 FT OCCASIONALLY TO
14 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
LMZ761-091615-
MAFOR 0911/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11547 12630 11620 11510
11427 11337 11147. WAVES 8 TO 12 FEET SUBSIDING TO 3 TO 5 FEET
TODAY. WAVES 2 TO 4 FEET BUILDING TO 5 TO 9 FEET TONIGHT.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...11540 12640 12530 11457
11556 11650. WAVES 6 TO 10 FEET SUBSIDING TO 4 TO 7 FEET TODAY.
WAVES 3 TO 6 FEET BUILDING TO 8 TO 12 FEET TONIGHT.
KUROSKI
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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