006
FZUS63 KMKX 240247
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
847 PM CST TUE DEC 23 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
HIGH PRESSURE AROUND 30.4 INCHES WILL CROSS THE GREAT LAKES
TONIGHT. A WEAK LOW PRESSURE TROUGH AROUND 30.0 INCHES WILL CROSS
LAKE MICHIGAN WEDNESDAY EVENING, AND THEN ANOTHER HIGH PRESSURE
SYSTEM AROUND 30.5 INCHES WILL BRING A PUSH OF NORTHERLY WINDS
DOWN THE LAKE EARLY THURSDAY MORNING. WEAK LOW PRESSURE OF 29.7
INCHES WILL CROSS ILLINOIS AND INDIANA ON FRIDAY. THERE IS A
CHANCE FOR GALES SUNDAY THROUGH MONDAY AS LOW DEEPENS TO 29.3
INCHES AS IT CROSSES ONTARIO AND 29.1 INCHES OVER QUEBEC.
LMZ261-362-364-366-563-565-567-868-241045-
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-
847 PM CST TUE DEC 23 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
NORTHWEST WINDS TO 30 KT BECOMING NORTH 15 TO
25 KT LATE THIS EVENING, THEN DIMINISHING TO 10 TO 20 KT AFTER
MIDNIGHT AND 5 TO 10 KT LATE. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4
FT.
WEDNESDAY
EAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 20 KT
FROM LATE MORNING ON. CHANCE OF LIGHT FREEZING RAIN AND SNOW IN
THE MORNING, THEN CHANCE OF SNOW IN THE AFTERNOON. WAVES 2 TO
4 FT.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 20 KT VEERING TO NORTH.
CHANCE OF RAIN IN THE EVENING. WAVES 2 TO 4 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
SOUTHEAST WINDS TO 30 KT. CHANCE OF SNOW, RAIN
AND LIGHT FREEZING RAIN OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
FRIDAY
SOUTHEAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
RAIN, SNOW AND LIGHT FREEZING RAIN LIKELY IN THE MORNING, THEN
CHANCE OF RAIN AND SNOW 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 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT BUILDING
TO 2 TO 4 FT.
SUNDAY
WEST GALES TO 35 KT INCREASING TO GALES TO 40 KT.
FREEZING SPRAY. CHANCE OF SNOW. WAVES 8 TO 11 FT OCCASIONALLY TO
14 FT BUILDING TO 10 TO 14 FT OCCASIONALLY TO 18 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-241045-
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-
847 PM CST TUE DEC 23 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTHEAST
10 TO 15 KT. WAVES 3 TO 5 FT.
WEDNESDAY
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO
20 KT. WAVES 2 TO 4 FT.
WEDNESDAY NIGHT
SOUTH WINDS 10 TO 20 KT BACKING TO NORTH.
CHANCE OF RAIN IN THE EVENING. WAVES 2 TO 4 FT.
THURSDAY
NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
EAST WINDS TO 30 KT BECOMING SOUTHEAST. RAIN
LIKELY WITH A CHANCE OF LIGHT FREEZING RAIN OVERNIGHT. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT.
FRIDAY
SOUTHEAST WINDS TO 30 KT BECOMING EAST 10 TO 20 KT IN
THE AFTERNOON. RAIN LIKELY IN THE MORNING. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
FRIDAY NIGHT
NORTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
SATURDAY
SOUTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
SUNDAY
NORTHWEST GALES TO 40 KT BECOMING WEST GALES TO 45 KT.
WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT BUILDING TO 14 TO 18 FT
OCCASIONALLY TO 23 FT.
LMZ761-241045-
MAFOR 2405/
MICHIGAN NORTH 11820 11810 11100 11310 13420 11510. A CHANCE OF
LIGHT FREEZING RAIN AND SNOW WEDNESDAY MORNING, THEN A CHANCE OF
SNOW WEDNESDAY AFTERNOON. A CHANCE OF RAIN WEDNESDAY EVENING.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET OVERNIGHT, THEN
BUILDING TO 2 TO 4 FEET WEDNESDAY. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET WEDNESDAY EVENING.
MICHIGAN SOUTH 11820 11110 11210 11310 12320 11420 11410. A
CHANCE OF RAIN WEDNESDAY EVENING. WAVES 2 TO 4 FEET SUBSIDING TO
1 TO 3 FEET OVERNIGHT, THEN BUILDING TO 2 TO 4 FEET WEDNESDAY.
WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET WEDNESDAY EVENING.
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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