280
FZUS63 KMKX 101955
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
255 PM CDT FRI APR 10 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 WILL BUILD OVER THE WESTERN
GREAT LAKES REGION TONIGHT INTO SATURDAY MORNING, CAUSING WINDS TO
BECOME LIGHT AND VARIABLE. SOUTHEAST WINDS RETURN SATURDAY
AFTERNOON AND BECOME GUSTY SATURDAY NIGHT AS A SHARPER PRESSURE
GRADIENT MOVES OVER THE LAKE AS LOW PRESSURE MOVES INTO THE
NORTHERN GREAT PLAINS.
LOW PRESSURE WILL SHIFT INTO THE NORTHERN GREAT PLAINS DURING THE
DAY SUNDAY AS IT DEEPENS TO NEAR 29.4 INCHES. THE LOW WILL QUICKLY
SHIFT EAST TOWARD LAKE SUPERIOR SUNDAY NIGHT, REACHING THE
SOUTHERN SHORES OF THE HUDSON BAY BY DAYBREAK MONDAY MORNING.
WINDS WILL THUS INCREASE FURTHER ACROSS THE OPEN WATERS SUNDAY
THROUGH SUNDAY NIGHT. WILL BE MONITORING FOR GALE POTENTIAL
DURING THIS TIME FRAME, PARTICULARLY OVER THE NORTHERN HALF OF
LAKE MICHIGAN. THE NEED FOR HEADLINES WILL CONTINUE TO BE
EVALUATED AS THIS PORTION OF THE PERIOD APPROACHES. WINDS WILL
WEAKEN MONDAY MORNING AS 30.0 INCH HIGH PRESSURE MOVES ACROSS
ONTARIO.
PASSING LOW PRESSURE SYSTEMS WILL LEAD TO PERSISTENTLY ACTIVE
CONDITIONS ACROSS LAKE MICHIGAN SATURDAY AFTERNOON INTO NEXT WEEK,
WITH MULTIPLE CHANCES FOR SHOWERS AND THUNDERSTORMS FORECAST. WILL
NEED TO MONITOR THUNDERSTORM DEVELOPMENT DURING THE MONDAY-
WEDNESDAY TIME PERIOD, AS SOME STORMS COULD BECOME STRONG TO
SEVERE.
LMZ261-362-364-366-563-565-567-868-110315-
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-
255 PM CDT FRI APR 10 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TONIGHT
NORTH WINDS 10 TO 15 KT BACKING TO SOUTHWEST 5 TO
10 KT. WAVES 1 TO 2 FT.
SATURDAY
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 3 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST TO
30 KT. CHANCE OF RAIN SHOWERS IN THE EVENING, THEN RAIN SHOWERS
OVERNIGHT. WAVES 1 TO 3 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
SUNDAY
SOUTH WINDS TO 30 KT. RAIN SHOWERS WITH A CHANCE OF
THUNDERSTORMS IN THE MORNING, THEN RAIN SHOWERS LIKELY WITH A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT.
SUNDAY NIGHT
SOUTHWEST GALES TO 40 KT. RAIN SHOWERS LIKELY.
WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT.
MONDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT IN
THE AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO
4 TO 6 FT OCCASIONALLY TO 8 FT.
MONDAY NIGHT
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST 15 TO
25 KT. RAIN SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES
2 TO 4 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
RAIN SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-110315-
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-
255 PM CDT FRI APR 10 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT
LATE THIS EVENING, THEN BECOMING EAST AFTER MIDNIGHT BECOMING
EAST 5 TO 10 KT LATE. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
SATURDAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST 10 TO 15 KT.
WAVES 1 TO 2 FT.
SATURDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO
20 KT LATE IN THE EVENING, THEN INCREASING TO 15 TO 25 KT AFTER
MIDNIGHT BECOMING SOUTHEAST 15 TO 25 KT LATE. CHANCE OF RAIN
SHOWERS. WAVES 1 TO 3 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
SUNDAY
SOUTH WINDS TO 30 KT. CHANCE OF RAIN SHOWERS. WAVES
6 TO 9 FT OCCASIONALLY TO 12 FT.
SUNDAY NIGHT
SOUTHWEST GALES TO 35 KT. RAIN SHOWERS IN THE
EVENING, THEN RAIN SHOWERS LIKELY OVERNIGHT. WAVES 7 TO 10 FT
OCCASIONALLY TO 13 FT.
MONDAY
SOUTHWEST WINDS TO 30 KT BECOMING SOUTH 10 TO 20 KT IN
THE AFTERNOON. CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF RAIN SHOWERS AND THUNDERSTORMS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
WEDNESDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
LMZ761-110315-
MAFOR 1022/
MICHIGAN NORTH 11810 11110 11400 12500 12510 11520. WAVES 2 FEET
OR LESS.
MICHIGAN SOUTH 11820 11110 11100 11200 12300 12310. WAVES 2 FEET
OR LESS.
KUROSKI
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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