941
FZUS63 KMKX 090804
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
304 AM CDT THU APR 9 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 29.7 INCHES OVER FAR WESTERN ONTARIO WILL
TRACK NORTH OF LAKE SUPERIOR THROUGH LATE MORNING. THE WINDS
BEHIND THE ASSOCIATED FRONT DROPPING DOWN LAKE MICHIGAN EARLY THIS
MORNING WILL BE WESTERLY AND LIGHT. THE GALE WARNING WILL BE
ALLOWED TO EXPIRE AT 4 AM.
LIGHT AND VARIABLE WINDS WILL PREVAIL THIS AFTERNOON THROUGH
SATURDAY MORNING, UNTIL BREEZY SOUTHERLY WINDS RETURN LATER IN THE
WEEKEND. SOUTHERLY GALES ARE POSSIBLE OVER THE NORTH HALF
SUNDAY INTO MONDAY MORNING.
LMZ261-362-364-366-563-565-567-868-091530-
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-
304 AM CDT THU APR 9 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
..GALE WARNING IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING
TODAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 20 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT.
TONIGHT
WEST WINDS 10 TO 15 KT VEERING TO NORTHEAST. SLIGHT
CHANCE OF RAIN SHOWERS IN THE EVENING, THEN CHANCE OF RAIN
SHOWERS OVERNIGHT. WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT.
FRIDAY
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 TO
2 FT.
FRIDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT VEERING TO SOUTH LESS
THAN 10 KT OVERNIGHT. WAVES 1 FT OR LESS.
SATURDAY
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 2 FT.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 15 TO
25 KT. 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 INCREASING TO GALES TO 35 KT. RAIN
SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT BUILDING TO 8 TO
11 FT OCCASIONALLY TO 14 FT.
MONDAY
SOUTHWEST GALES TO 35 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT
SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
LMZ669-671-673-675-870-872-874-876-091530-
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 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-
304 AM CDT THU APR 9 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...
..GALE WARNING IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING
TODAY
SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 5 TO 10 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 1 TO 3 FT.
TONIGHT
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT.
CHANCE OF RAIN SHOWERS IN THE EVENING, THEN RAIN SHOWERS
OVERNIGHT. WAVES 1 TO 2 FT.
FRIDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO 20 KT.
CHANCE OF RAIN SHOWERS IN THE MORNING. WAVES 1 TO 2 FT.
FRIDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 2 FT.
SATURDAY
SOUTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 2 FT.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. 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 BUILDING TO 7 TO 10 FT
OCCASIONALLY TO 13 FT.
MONDAY
SOUTHWEST WINDS TO 30 KT BECOMING SOUTH 15 TO 25 KT.
CHANCE OF SHOWERS. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT
SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
LMZ080-777-779-878-091530-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
304 AM CDT THU APR 9 2026
WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...
TODAY
SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT
LATE THIS MORNING, THEN DIMINISHING TO 5 TO 10 KT EARLY THIS
AFTERNOON AND BACKING TO SOUTHEAST LATE. CHANCE OF RAIN SHOWERS THIS
MORNING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 1 TO 3
FT.
TONIGHT
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING, THEN RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
OVERNIGHT. WAVES 1 TO 2 FT.
FRIDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. CHANCE OF
RAIN SHOWERS. WAVES 1 TO 2 FT.
FRIDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 2 FT.
SATURDAY
EAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
SATURDAY NIGHT
SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FT BUILDING TO 2 TO
4 FT.
SUNDAY
SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE OF
SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
MONDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT
SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ761-091530-
MAFOR 0910/
MICHIGAN NORTH 11530 13630 11610 11700 11100 11200. A CHANCE OF
RAIN SHOWERS OVERNIGHT. WAVES 4 TO 7 FEET SUBSIDING TO 2 TO 4
FEET TODAY. WAVES 1 TO 3 FEET SUBSIDING TO 1 FOOT OR LESS
TONIGHT.
MICHIGAN SOUTH 11536 11510 11610 11510 11200 11100 12116. WAVES 4
TO 7 FEET SUBSIDING TO 1 TO 3 FEET TODAY. WAVES 2 FEET OR LESS
TONIGHT.
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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