228
FZUS63 KMKX 280144
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
844 PM CDT MON APR 27 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
LOW PRESSURE AROUND 29.3 INCHES WILL GRADUALLY MOVE NORTHEAST
ACROSS LAKE SUPERIOR OVERNIGHT. GUSTY SOUTH TO SOUTHEAST WINDS
WILL BECOME SOUTHWEST OVERNIGHT AND WEST ON TUESDAY, AS A COLD
FRONT MOVES THROUGH.
SCATTERED THUNDERSTORMS WILL ALSO MOVE EAST ACROSS PORTIONS OF
THE LAKE INTO THE OVERNIGHT HOURS, WHICH MAY BRING SOME GUSTY
WINDS. SOME FOG MAY OCCUR AS WELL, UNTIL THE GUSTY SOUTHWEST TO
WEST WINDS DEVELOP OVERNIGHT INTO TUESDAY.
HIGH PRESSURE AROUND 30.1 INCHES WILL SET UP OVER THE UPPER
MIDWEST WEDNESDAY THROUGH FRIDAY. THIS SHOULD BRING GRADUALLY
LIGHTER WINDS TO LAKE MICHIGAN.
LMZ261-362-364-366-563-565-567-868-280915-
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-
844 PM CDT MON APR 27 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
SOUTHEAST WINDS TO 30 KT BECOMING SOUTHWEST
15 TO 25 KT. PATCHY FOG. SCATTERED RAIN SHOWERS AND THUNDERSTORMS
THROUGH EARLY EVENING, THEN SCATTERED RAIN SHOWERS WITH ISOLATED
THUNDERSTORMS OVERNIGHT. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
TUESDAY
SOUTHWEST WINDS TO 30 KT BECOMING WEST 15 TO 25 KT.
ISOLATED RAIN SHOWERS IN THE MORNING. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT.
TUESDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH 10 TO
15 KT LATE IN THE EVENING, THEN DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT BECOMING NORTH 5 TO 10 KT LATE. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 3 FT.
WEDNESDAY
NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST 10 TO
20 KT. WAVES 1 TO 3 FT.
WEDNESDAY NIGHT
NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 2 FT.
THURSDAY
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
FRIDAY
NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
SATURDAY
NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES 1 TO
3 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-280915-
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-
844 PM CDT MON APR 27 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST AFTER
MIDNIGHT, THEN DIMINISHING TO 15 TO 25 KT LATE. PATCHY FOG. RAIN
SHOWERS AND SCATTERED THUNDERSTORMS THROUGH EARLY EVENING, THEN
SCATTERED RAIN SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 7 TO
10 FT OCCASIONALLY TO 13 FT.
TUESDAY
WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT.
TUESDAY NIGHT
WEST WINDS 10 TO 15 KT VEERING TO NORTH 5 TO
10 KT. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
WEDNESDAY
NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
WEDNESDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO
5 TO 10 KT OVERNIGHT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
THURSDAY
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES
1 TO 2 FT.
THURSDAY NIGHT
NORTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
FRIDAY
NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
SATURDAY
NORTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
LMZ761-280915-
MAFOR 2804/
MICHIGAN NORTH 11446 12530 19536 12640 11630 11620 11810. WAVES 5
TO 9 FEET OVERNIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET
TUESDAY. WAVES 1 TO 3 FEET TUESDAY EVENING.
MICHIGAN SOUTH 11446 19449 11530 12630 12620 11610 11500. WAVES 5
TO 9 FEET OVERNIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4 FEET
TUESDAY. WAVES 1 TO 3 FEET TUESDAY 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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