158
FZUS63 KMKX 040255
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
855 PM CST TUE FEB 3 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
HIGH PRESSURE AROUND 30.4 INCHES OVER FAR WESTERN WISCONSIN WILL
SLIDE SOUTHWARD INTO IOWA OVERNIGHT INTO WEDNESDAY. MAINLY LIGHT
WINDS ARE EXPECTED. LAKE EFFECT SNOW SHOWERS ARE POSSIBLE OVER
THE SOUTHERN HALF OF THE OPEN WATERS OVERNIGHT THROUGH WEDNESDAY
AFTERNOON. WINDS WILL TREND WEST SOUTHWESTERLY WEDNESDAY NIGHT
INTO THURSDAY, AS LOW PRESSURE AROUND 29.5 INCHES MOVES FROM THE
CANADIAN GREAT PLAINS TO WESTERN HUDSON BAY. SNOW IS POSSIBLE
DURING THE DAY ON THURSDAY, AHEAD OF THE DEVELOPING LOW.
LOW PRESSURE WILL DEEPEN FURTHER TO NEAR 29.3 INCHES OVER CENTRAL
HUDSON BAY THURSDAY NIGHT, ULTIMATELY PROGRESSING INTO NORTHERN
QUEBEC DURING THE DAY ON FRIDAY. THE LOW WILL PULL A COLD FRONT
ACROSS THE OPEN WATERS IN THE PROCESS, RESULTING IN A GUSTY
NORTHWEST WIND SHIFT EARLY FRIDAY MORNING.
A PERIOD OF NORTHWESTERLY GALES REMAINS POSSIBLE DURING THE
AFTERNOON AND EVENING HOURS FRIDAY, WITH TRENDS BEING MONITORED
FOR POTENTIAL HEADLINES IN COMING FORECASTS. AREAS OF SNOW SHOWERS
WILL CONTINUE ALONG AND AHEAD OF THE PASSING FRONT THURSDAY NIGHT
INTO EARLY FRIDAY MORNING.
ELEVATED WAVE HEIGHTS WILL COMBINE WITH ARCTIC AIR SETTLING IN
BEHIND THE COLD FRONT TO SUPPORT AREAS OF MODERATE FREEZING SPRAY
FRIDAY AFTERNOON INTO SATURDAY MORNING. HEAVY FREEZING SPRAY IS
POSSIBLE, WITH THE NEED FOR POSSIBLE HEADLINES BEING EVALUATED IN
COMING FORECASTS.
WINDS WILL BRIEFLY TAPER SATURDAY AFTERNOON, AS HIGH PRESSURE
AROUND 30.4 INCHES CROSSES LAKE MICHIGAN, PRIOR TO INCREASING
ONCE MORE SATURDAY NIGHT, AS THE FEATURE MOVES EAST.
LMZ261-362-364-366-563-565-567-868-041015-
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-
855 PM CST TUE FEB 3 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. ISOLATED SNOW SHOWERS THROUGH EARLY EVENING. WAVES 1 TO
3 FT.
WEDNESDAY
NORTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS 5 TO 10 KT BACKING TO
SOUTHWEST 10 TO 15 KT. WAVES 1 TO 2 FT.
THURSDAY
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SNOW IN THE MORNING. WAVES 3 TO 5 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO
20 KT. CHANCE OF SNOW OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT.
FRIDAY
NORTHWEST GALES TO 35 KT BECOMING NORTH. FREEZING SPRAY
IN THE AFTERNOON. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT BUILDING
TO 10 TO 14 FT OCCASIONALLY TO 18 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. FREEZING SPRAY. WAVES 10 TO 14 FT OCCASIONALLY TO 18 FT
SUBSIDING TO 8 TO 11 FT OCCASIONALLY TO 14 FT.
SATURDAY
NORTHWEST WINDS TO 30 KT BECOMING WEST 10 TO 20 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT.
SUNDAY
EAST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-041015-
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-
855 PM CST TUE FEB 3 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST.
ISOLATED SNOW SHOWERS THROUGH EARLY EVENING, THEN SCATTERED SNOW
SHOWERS OVERNIGHT. WAVES 2 TO 4 FT.
WEDNESDAY
NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST 5 TO
10 KT. SCATTERED SNOW SHOWERS. WAVES 1 TO 3 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS 5 TO 10 KT BECOMING SOUTHWEST
10 TO 15 KT. WAVES 1 TO 3 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF SNOW IN THE MORNING. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST.
CHANCE OF SNOW AND RAIN OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
FRIDAY
NORTHWEST WINDS TO 30 KT BECOMING NORTH GALES TO 35 KT.
WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT BUILDING TO 12 TO 16 FT
OCCASIONALLY TO 21 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. FREEZING SPRAY. WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT.
SATURDAY
NORTH WINDS TO 30 KT BACKING TO SOUTHWEST 10 TO
20 KT. FREEZING SPRAY. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY
EAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
LMZ761-041015-
MAFOR 0405/
MICHIGAN NORTH 11810 11800 14700 11700 11600. WAVES 2 FEET OR
LESS. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
MICHIGAN SOUTH 11110 11100 19107 12810 19817 11710 19717 13700.
WAVES 1 TO 3 FEET OVERNIGHT. WAVES 2 FEET OR LESS WEDNESDAY AND
WEDNESDAY EVENING.
WOOD
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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