810
FZUS63 KMKX 041358
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
758 AM CST WED FEB 4 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 30.5 INCHES OVER FAR WESTERN WISCONSIN WILL
SLIDE SOUTHWARD INTO IOWA TODAY, MERGING WITH BROAD HIGH PRESSURE
FURTHER WEST. MAINLY LIGHT WINDS ARE EXPECTED. LAKE EFFECT SNOW
SHOWERS REMAIN POSSIBLE OVER THE SOUTHERN HALF OF THE OPEN WATERS
THROUGH THIS AFTERNOON. WINDS WILL TREND WEST SOUTHWESTERLY
TONIGHT 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 30.5 INCHES CROSSES LAKE MICHIGAN, PRIOR TO INCREASING
ONCE MORE SATURDAY NIGHT, AS THE FEATURE MOVES EAST.
LMZ261-362-364-366-563-565-567-868-042215-
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-
758 AM CST WED FEB 4 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTHWEST WINDS 5 TO 10 KT BECOMING WEST. WAVES
1 TO 2 FT.
TONIGHT
WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST AFTER
MIDNIGHT, THEN INCREASING TO 10 TO 15 KT LATE. SLIGHT CHANCE OF
SNOW IN THE EVENING. WAVES 1 TO 3 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. SNOW LIKELY IN THE MORNING, THEN CHANCE OF SNOW IN THE
AFTERNOON. 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 IN THE EVENING, THEN SNOW LIKELY OVERNIGHT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
FRIDAY
NORTHWEST GALES TO 35 KT BECOMING NORTH. CHANCE OF SNOW
IN THE MORNING. FREEZING SPRAY IN THE AFTERNOON. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT BUILDING TO 10 TO 14 FT OCCASIONALLY TO
18 FT.
FRIDAY NIGHT
NORTH GALES TO 40 KT DIMINISHING TO GALES TO
35 KT. HEAVY FREEZING SPRAY. CHANCE OF SNOW. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO
13 FT.
SATURDAY
NORTHWEST WINDS TO 30 KT BECOMING WEST 10 TO 20 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT.
WAVE FORECAST IS FOR ICE FREE AREAS
LMZ080-669-671-673-675-777-779-870-872-874-876-878-042215-
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-
758 AM CST WED FEB 4 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTHWEST.
CHANCE OF SNOW THIS MORNING, THEN SLIGHT CHANCE OF SNOW THIS
AFTERNOON. WAVES 1 TO 3 FT.
TONIGHT
NORTHWEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO
15 KT. WAVES 1 TO 3 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT. CHANCE OF SNOW. WAVES
2 TO 4 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 LIGHT FREEZING DRIZZLE OVERNIGHT. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
FRIDAY
NORTHWEST WINDS TO 30 KT BECOMING NORTH GALES TO 35 KT.
CHANCE OF SNOW IN THE MORNING. WAVES 7 TO 10 FT OCCASIONALLY TO
13 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 12 FT OCCASIONALLY TO 16 FT.
SATURDAY
NORTH WINDS TO 30 KT BACKING TO SOUTHWEST 10 TO
20 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO
5 FT.
SUNDAY
SOUTHEAST WINDS 10 TO 20 KT. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
WAVE FORECAST IS FOR ICE FREE AREAS
LMZ761-042215-
MAFOR 0417/
MICHIGAN NORTH 14600 11500 11510 12527. WAVES 2 FEET OR LESS THIS
AFTERNOON AND TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
THURSDAY MORNING. WAVE HEIGHTS ARE FOR ICE FREE AREAS.
MICHIGAN SOUTH 13700 12600 12510 11520. A CHANCE OF SNOW LATE
THIS MORNING AND THURSDAY MORNING. WAVES 2 FEET OR LESS THIS
AFTERNOON AND TONIGHT. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET
THURSDAY MORNING.
DDV
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/MKX/GLFTABLE
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page