425
FZUS63 KMKX 240205
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
905 PM CDT SAT MAY 23 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
WEAK LOW PRESSURE AROUND 29.8 INCHES WILL MOVE NORTHEAST ACROSS
MANITOBA OVERNIGHT INTO SUNDAY. THIS WILL PULL A WEAK COLD FRONT
EASTWARD ACROSS LAKE MICHIGAN EARLY SUNDAY MORNING AND EXIT BY
LATE MORNING. GUSTY EAST WINDS OVER FAR NORTHERN PORTIONS OF THE
LAKE SHOULD WEAKEN OVERNIGHT INTO SUNDAY MORNING, WITH LIGHT SOUTH
WINDS ELSEWHERE. SOUTH WINDS SHOULD THEN DEVELOP LATER SUNDAY
INTO SUNDAY NIGHT.
SOME FOG IS EXPECTED TO DEVELOP ACROSS THE LAKE OVERNIGHT INTO
SUNDAY MORNING. WILL MONITOR TRENDS FOR DENSE FOG DEVELOPMENT. IT
MAY LINGER FURTHER INTO SUNDAY AND SUNDAY NIGHT, AS MILDER AIR
MOVES OVER AND REMAINS OVER THE COOLER LAKE WATERS.
GOING INTO EARLY NEXT WEEK, A BROAD RIDGE OF HIGH PRESSURE AROUND
30.2 INCHES IS EXPECTED TO SET UP OVER THE EASTERN GREAT LAKES,
USHERING IN MORE SOUTH TO SOUTHWEST WINDS ACROSS LAKE MICHIGAN.
A COLD FRONT MAY SHIFT SOUTHWARD ACROSS THE LAKE TOWARD THE
MIDDLE OF NEXT WEEK, AS HIGH PRESSURE AROUND 30.3 INCHES BUILDS
INTO JAMES BAY.
LMZ261-362-364-366-563-565-567-868-240930-
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-
905 PM CDT SAT MAY 23 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
EAST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT
AFTER MIDNIGHT, THEN BECOMING SOUTHEAST 10 TO 15 KT LATE. PATCHY
FOG OVERNIGHT. ISOLATED RAIN SHOWERS OVERNIGHT. WAVES 3 TO 5 FT
SUBSIDING TO 1 TO 2 FT.
SUNDAY
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 15 KT.
ISOLATED RAIN SHOWERS IN THE MORNING. PATCHY FOG. WAVES 1 TO
2 FT.
SUNDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST.
PATCHY FOG. WAVES 1 TO 2 FT.
MONDAY
SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 2 FT BUILDING TO
2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT.
TUESDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 3 FT.
TUESDAY NIGHT
SOUTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 3 FT.
WEDNESDAY
NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 2 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT INCREASING TO 30 KT.
WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-240930-
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-
905 PM CDT SAT MAY 23 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
NORTHEAST WINDS 5 TO 10 KT VEERING TO SOUTH.
PATCHY FOG. SLIGHT CHANCE OF THUNDERSTORMS WITH ISOLATED RAIN
SHOWERS OVERNIGHT. WAVES 1 FT OR LESS.
SUNDAY
SOUTHEAST WINDS 5 TO 10 KT. SCATTERED RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING. PATCHY FOG. WAVES
1 FT OR LESS.
SUNDAY NIGHT
SOUTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. PATCHY FOG. WAVES 1 TO 2 FT.
MONDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 2 TO 4 FT.
TUESDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.
TUESDAY NIGHT
SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT
SUBSIDING TO 1 FT OR LESS.
WEDNESDAY
EAST WINDS 5 TO 10 KT BECOMING NORTH. WAVES NEARLY
CALM BUILDING TO 1 TO 2 FT.
THURSDAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT.
LMZ761-240930-
MAFOR 2404/
MICHIGAN NORTH 11230 11310 11300 11400 14410. WAVES 2 TO 4 FEET
SUBSIDING TO 1 TO 3 FEET OVERNIGHT. WAVES 2 FEET OR LESS SUNDAY
AND SUNDAY EVENING.
MICHIGAN SOUTH 11300 11400 11400 19406 11300 19306 12300 11310
11410. WAVES 1 FOOT OR LESS.
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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