439
FZUS63 KMKX 150203
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
903 PM CDT THU MAY 14 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 OF 30.1 INCHES OVER LOWER MICHIGAN WILL CONTINUE TO
SHIFT EASTWARD TONIGHT, WITH SOUTHERLY WINDS DEVELOPING ON THE
BACK SIDE OF THE HIGH. THESE WINDS WILL INCREASE ON FRIDAY BEHIND
THE DEPARTING HIGH AND LOW PRESSURE OF 29.1 INCHES MOVING FROM
CENTRAL MANITOBA INTO ONTARIO. A FEW GALE FORCE GUSTS WILL BE
POSSIBLE IN NORTHERN PORTIONS OF THE LAKE TOMORROW AFTERNOON AND
EVENING, THOUGH THIS SETUP LOOKS TOO BORDERLINE FOR A GALE WATCH
AT THIS POINT.
SOUTHERLY WINDS WILL PERSIST ON SATURDAY, WHILE BECOMING LIGHTER
AS THE LOW PULLS AWAY TO THE NORTHEAST. SOUTHERLY WINDS WILL
THEN PICK BACK UP SUNDAY INTO MONDAY AHEAD OF APPROACHING LOW
PRESSURE. GALES ARE POSSIBLE MONDAY AND TUESDAY. MULTIPLE ROUNDS
OF SHOWERS AND STORMS WILL BE POSSIBLE THIS WEEKEND INTO EARLY
NEXT WEEK.
LMZ261-362-364-366-563-565-567-868-150930-
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-
903 PM CDT THU MAY 14 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TONIGHT
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 3 FT.
FRIDAY
SOUTH WINDS TO 30 KT WITH A FEW GALE FORCE GUSTS TO 35
KT. SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 2 TO 4 FT
BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT.
FRIDAY NIGHT
SOUTH WINDS TO 30 KT. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 12
FT.
SATURDAY
SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO
20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 20 KT BACKING TO NORTHEAST
10 TO 15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
SUNDAY
EAST WINDS 10 TO 15 KT INCREASING TO 15 TO 25 KT IN THE
AFTERNOON. CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES 1 TO
3 FT BUILDING TO 3 TO 5 FT.
SUNDAY NIGHT
SOUTHEAST WINDS TO 30 KT BECOMING SOUTH. CHANCE
OF RAIN SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO
5 TO 8 FT OCCASIONALLY TO 10 FT.
MONDAY
SOUTH WINDS TO 30 KT INCREASING TO GALES TO 35 KT.
CHANCE OF RAIN SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT
BUILDING TO 7 TO 10 FT OCCASIONALLY TO 13 FT.
TUESDAY
SOUTHWEST GALES TO 40 KT. CHANCE OF SHOWERS. WAVES 8
TO 12 FT OCCASIONALLY TO 16 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-150930-
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-
903 PM CDT THU MAY 14 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TONIGHT
SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH
10 TO 20 KT. WAVES 1 TO 3 FT.
FRIDAY
SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. SLIGHT
CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 2 TO 4 FT BUILDING
TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
FRIDAY NIGHT
SOUTH WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
SATURDAY
SOUTH WINDS 10 TO 15 KT. CHANCE OF SHOWERS. WAVES
3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
SATURDAY NIGHT
SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST.
CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 1 TO 2 FT.
SUNDAY
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT.
SUNDAY NIGHT
SOUTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
MONDAY
SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT.
TUESDAY
SOUTHWEST GALES TO 35 KT DIMINISHING TO 30 KT. CHANCE
OF SHOWERS. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
LMZ761-150930-
MAFOR 1504/
MICHIGAN NORTH 11410 11420 11430 12440 13440. WAVES 1 TO 3 FEET
OVERNIGHT. WAVES 1 TO 3 FEET BUILDING TO 5 TO 9 FEET FRIDAY.
WAVES 8 TO 11 FEET FRIDAY EVENING.
MICHIGAN SOUTH 12410 11420 11430 14440. WAVES 2 FEET OR LESS
OVERNIGHT. WAVES 1 TO 3 FEET BUILDING TO 5 TO 8 FEET FRIDAY.
WAVES 5 TO 8 FEET FRIDAY EVENING.
CRONCE
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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