803
FZUS63 KMKX 270907
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
307 AM CST THU NOV 27 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 OF 29.3 INCHES OVER EASTERN ONTARIO WILL CONTINUE
TO EXIT THROUGH QUEBEC TODAY. WINDS HAVE EASED TO HIGH END GALES
AND THEY WILL PERSIST THROUGH AT LEAST LATE AFTERNOON. THE GALE
WARNING MAY BE ABLE TO END SLIGHTLY EARLIER THAN ITS CURRENT END
TIME TONIGHT. LIGHT WESTERLY WINDS WILL SET UP ACROSS THE LAKE
FRIDAY NIGHT AND BECOME SOUTHERLY BY SATURDAY MORNING.
LOW PRESSURE OF 29.8 INCHES WILL TRACK FROM EASTERN KANSAS
SATURDAY MORNING TO THE SOUTHERN TIP OF LAKE MICHIGAN SATURDAY
NIGHT, AND THEN REACH LAKE HURON BY MID SUNDAY WHILE DEEPENING TO
29.7 INCHES. WIDESPREAD, MODERATE TO HEAVY SNOW WILL OVERSPREAD
THE SOUTH HALF OF LAKE MICHIGAN. SOUTHEAST WIND SATURDAY WILL
BECOME EASTERLY AND THEN WESTERLY AS THE LOW CROSSES THE GREAT
LAKES REGION. GALES ARE NOT ANTICIPATED AT THIS TIME, ALTHOUGH A
PERIOD OF GUSTY NORTHWEST WINDS IS EXPECTED SUNDAY.
LMZ261-362-364-563-271630-
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-
307 AM CST THU NOV 27 2025
STURGEON BAY WI TO POINT BETSIE MI NORTH...
..GALE WARNING IN EFFECT THROUGH LATE TONIGHT
TODAY
NORTHWEST GALES TO 40 KT. SNOW SHOWERS THIS MORNING,
THEN SNOW SHOWERS LIKELY THIS AFTERNOON. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT SUBSIDING TO 8 TO 11 FT OCCASIONALLY TO
14 FT.
TONIGHT
NORTHWEST GALES TO 40 KT. SNOW SHOWERS LIKELY IN THE
EVENING, THEN CHANCE OF SNOW SHOWERS OVERNIGHT. WAVES 8 TO 12 FT
OCCASIONALLY TO 16 FT SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO 13
FT.
FRIDAY
NORTHWEST WINDS UP TO 30 KT. SNOW SHOWERS LIKELY IN THE
MORNING, THEN CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
FRIDAY NIGHT
NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. CHANCE OF SNOW IN THE EVENING. WAVES 3 TO 5 FT SUBSIDING
TO 1 TO 3 FT.
SATURDAY
WEST WINDS 10 TO 15 KT BACKING TO SOUTHEAST. SNOW
LIKELY IN THE AFTERNOON. WAVES 1 TO 2 FT.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KT BECOMING EAST.
SNOW. WAVES 3 TO 5 FT.
SUNDAY
NORTH WINDS TO 30 KT BECOMING NORTHWEST. SNOW. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 4 TO 7 FT OCCASIONALLY
TO 9 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. CHANCE OF
SNOW. WAVES 2 TO 4 FT.
LMZ080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-271630-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
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 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 PENTWATER TO MANISTEE MI 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-
307 AM CST THU NOV 27 2025
STURGEON BAY WI TO POINT BETSIE MI SOUTH...
..GALE WARNING IN EFFECT THROUGH THIS EVENING
TODAY
NORTHWEST GALES TO 40 KT DIMINISHING TO GALES TO 35 KT.
CHANCE OF SNOW SHOWERS. WAVES 14 TO 18 FT OCCASIONALLY TO 23 FT
SUBSIDING TO 12 TO 16 FT OCCASIONALLY TO 21 FT.
TONIGHT
NORTHWEST GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. CHANCE OF SNOW SHOWERS. WAVES 14 TO 18 FT OCCASIONALLY TO
23 FT.
FRIDAY
NORTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO
13 FT.
FRIDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST 5 TO
10 KT OVERNIGHT. CHANCE OF SNOW. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT SUBSIDING TO 2 TO 4 FT.
SATURDAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST 15 TO
25 KT. SNOW LIKELY IN THE MORNING, THEN SNOW IN THE AFTERNOON.
WAVES 2 TO 4 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
SATURDAY NIGHT
SOUTHEAST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. SNOW. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
SUNDAY
NORTH WINDS TO 30 KT BECOMING NORTHWEST. SNOW. WAVES 12
TO 16 FT OCCASIONALLY TO 21 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
LMZ761-271630-
MAFOR 2711/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11767 13757 12767 11760
11750. WAVES 10 TO 15 FEET SUBSIDING TO 9 TO 12 FEET TODAY. WAVES
9 TO 13 FEET SUBSIDING TO 8 TO 11 FEET TONIGHT.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...14750 12757 12750.
WAVES 12 TO 17 FEET SUBSIDING TO 11 TO 15 FEET.
CRONCE
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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