422
FZUS63 KMKX 151433
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
933 AM CDT WED APR 15 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
A STATIONARY FRONT WILL REMAIN PARKED OVER THE MIDDLE THIRD OF
THE LAKE INTO THIS AFTERNOON, SLOWLY SINKING SOUTH TO THE
SOUTHERN END OF THE LAKE BY THURSDAY MORNING. WINDS WILL REMAIN
SOUTHERLY SOUTH OF THE FRONT AND MODESTLY BREEZY, WHILE WINDS
NORTH OF THE FRONT WILL REMAIN LIGHT AND VARIABLE TO NORTHERLY
DURING THIS TIME. THE FRONT WILL CLEAR THE LAKE AS A COLD FRONT
FRIDAY, BEFORE LOW PRESSURE OF 29.6 INCHES APPROACHES FROM THE
WEST. A MARINE DENSE FOG ADVISORY CONTINUES UNTIL THURSDAY
MORNING.
ADDITIONAL THUNDERSTORMS ARE FORECAST OVER THE SOUTHERN THIRD OF
LAKE MICHIGAN TODAY. A FEW STORMS COULD BE SEVERE WITH LARGE HAIL
BEING THE PRIMARY CONCERN. ADDITIONAL STORMS ARE POSSIBLE FRIDAY
INTO SATURDAY, WITH A FEW STRONGER STORMS POSSIBLE.
LMZ261-362-364-366-563-565-567-868-152115-
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-
933 AM CDT WED APR 15 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
..DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY
REST OF TODAY
NORTH WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. AREAS OF DENSE FOG. CHANCE OF RAIN SHOWERS LATE THIS
MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS AND THUNDERSTORMS
THIS AFTERNOON. WAVES 1 TO 3 FT.
TONIGHT
NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
AREAS OF DENSE FOG IN THE EVENING, THEN WIDESPREAD DENSE FOG
OVERNIGHT. CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 1 TO 2 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 10 TO
15 KT. WIDESPREAD DENSE FOG IN THE MORNING, THEN PATCHY FOG IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FT.
THURSDAY NIGHT
NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST.
WAVES 1 TO 2 FT.
FRIDAY
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT BUILDING TO 3 TO 5 FT.
FRIDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH TO
30 KT. RAIN SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. CHANCE OF
RAIN SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
SUNDAY
NORTHWEST WINDS TO 30 KT. WAVES 7 TO 10 FT OCCASIONALLY
TO 13 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-152115-
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-
933 AM CDT WED APR 15 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
..DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT THURSDAY
REST OF TODAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH.
AREAS OF DENSE FOG. RAIN SHOWERS LIKELY WITH A CHANCE OF
THUNDERSTORMS LATE THIS MORNING, THEN CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS THIS AFTERNOON. WAVES 2 TO 4 FT.
TONIGHT
SOUTHEAST WINDS 10 TO 15 KT. WIDESPREAD DENSE FOG.
RAIN SHOWERS WITH A CHANCE OF THUNDERSTORMS IN THE EVENING, THEN
RAIN SHOWERS LIKELY WITH SLIGHT CHANCE OF THUNDERSTORMS
OVERNIGHT. WAVES 1 TO 3 FT.
THURSDAY
SOUTH WINDS 10 TO 20 KT VEERING TO NORTHWEST 10 TO
15 KT. PATCHY DENSE FOG IN THE MORNING, THEN PATCHY FOG IN THE
AFTERNOON. RAIN SHOWERS LIKELY. WAVES 1 TO 3 FT.
THURSDAY NIGHT
NORTH WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
FRIDAY
SOUTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 20 KT IN
THE AFTERNOON. WAVES 1 TO 2 FT BUILDING TO 3 TO 5 FT.
FRIDAY NIGHT
SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH TO
30 KT. RAIN SHOWERS WITH A CHANCE OF THUNDERSTORMS. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
SATURDAY
SOUTH WINDS TO 30 KT BECOMING WEST. CHANCE OF RAIN
SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
SUNDAY
WEST WINDS TO 30 KT BECOMING NORTHWEST. WAVES 8 TO
11 FT OCCASIONALLY TO 14 FT.
LMZ761-152115-
MAFOR 1516/
MICHIGAN NORTH 12814 11114 12104 12114 11824. A CHANCE OF RAIN
SHOWERS TONIGHT AND THURSDAY MORNING. WAVES 2 FEET OR LESS.
MICHIGAN SOUTH 11514 11424 11416 19414 12316 19314 11314 11426
19424 11536 19534. WAVES 1 TO 3 FEET.
CMILLER
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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