875
FZUS63 KMKX 250231
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
831 PM CST WED DEC 24 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
NORTH WINDS WILL DEVELOP TONIGHT AND THURSDAY MORNING AS HIGH
PRESSURE OF 30.5 INCHES NOSES INTO THE REGION FROM THE NORTH.
WINDS WILL THEN TURN EASTERLY THURSDAY AFTERNOON AS THE HIGH MOVES
EAST, AND THEN WILL BECOME SOUTHEASTERLY THURSDAY NIGHT AND EARLY
FRIDAY AS LOW PRESSURE OF 29.7 INCHES MOVES ACROSS CENTRAL
ILLINOIS.
STRONGER LOW PRESSURE WILL AFFECT THE REGION LATE IN THE WEEKEND
INTO MONDAY, MOVING FROM THE CENTRAL PLAINS INTO THE EASTERN GREAT
LAKES. THIS WILL INITIALLY RESULT IN INCREASING SOUTHEAST WINDS
SATURDAY NIGHT AND EARLY SUNDAY, FOLLOWED BY A GOOD CHANCE FOR
GALES SUNDAY NIGHT AND MONDAY AS A STRONG COLD FRONT SWEEPS ACROSS
LAKE MICHIGAN. MUCH COLDER AIR WILL ALSO POSE A RISK FOR FREEZING
SPRAY.
LMZ261-362-364-366-563-565-567-868-251030-
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-
831 PM CST WED DEC 24 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
SOUTHWEST WINDS 10 TO 15 KT VEERING TO NORTH
10 TO 20 KT. PATCHY DRIZZLE THROUGH EARLY EVENING. WAVES 1 TO
3 FT BUILDING TO 2 TO 4 FT.
THURSDAY
NORTH WINDS 15 TO 25 KT BECOMING EAST 10 TO 20 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY NIGHT
EAST WINDS 15 TO 25 KT BECOMING SOUTHEAST TO
30 KT. CHANCE OF SNOW, RAIN AND LIGHT FREEZING RAIN OVERNIGHT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 7 TO 10 FT
OCCASIONALLY TO 13 FT.
FRIDAY
SOUTHEAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
SNOW, RAIN, LIGHT SLEET AND LIGHT FREEZING RAIN IN THE MORNING,
THEN CHANCE OF SNOW AND RAIN IN THE AFTERNOON. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
FRIDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 5 TO
10 KT. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KT. CHANCE OF RAIN AND
LIGHT FREEZING RAIN. WAVES 2 TO 4 FT.
SUNDAY
SOUTH WINDS 10 TO 20 KT VEERING TO NORTHWEST TO 30 KT.
CHANCE OF RAIN AND SNOW. WAVES 2 TO 4 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
MONDAY
NORTHWEST GALES TO 45 KT. FREEZING SPRAY. CHANCE OF
SNOW. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-251030-
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-
831 PM CST WED DEC 24 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
SOUTH WINDS 10 TO 15 KT BACKING TO NORTH 10 TO
20 KT. RAIN LIKELY WITH AREAS OF DRIZZLE THROUGH EARLY EVENING.
WAVES 2 TO 4 FT.
THURSDAY
NORTHEAST WINDS 15 TO 25 KT BECOMING EAST 10 TO
20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY NIGHT
EAST WINDS 15 TO 25 KT BECOMING SOUTHEAST TO
30 KT. RAIN LIKELY OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT.
FRIDAY
SOUTHEAST WINDS 15 TO 25 KT BACKING TO NORTHEAST 10 TO
15 KT IN THE AFTERNOON. RAIN IN THE MORNING. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
FRIDAY NIGHT
NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES
1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
SUNDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING NORTHWEST GALES TO
35 KT. CHANCE OF RAIN AND SNOW. WAVES 3 TO 5 FT BUILDING TO 5 TO
8 FT OCCASIONALLY TO 10 FT.
MONDAY
NORTHWEST GALES TO 45 KT. FREEZING SPRAY. CHANCE OF
SNOW. WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT.
LMZ761-251030-
MAFOR 2505/
MICHIGAN NORTH 11710 11820 11830 11130 11120 12220 11330. WAVES 2
FEET OR LESS BUILDING TO 2 TO 4 FEET OVERNIGHT. WAVES 3 TO 6 FEET
THURSDAY. WAVES 3 TO 5 FEET BUILDING TO 4 TO 7 FEET THURSDAY
EVENING.
MICHIGAN SOUTH 11710 11820 11830 11130 11120 11220 11230 11330.
PATCHY DRIZZLE LATE THIS EVENING. WAVES 1 TO 3 FEET OVERNIGHT.
WAVES 3 TO 6 FEET THURSDAY. WAVES 3 TO 6 FEET BUILDING TO 4 TO 7
FEET THURSDAY EVENING.
BOXELL
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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