429
FZUS63 KMKX 021345
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
845 AM CDT SUN AUG 2 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
BREEZY NORTH WINDS AND HIGH WAVES ARE EXPECTED TODAY AND THIS
EVENING OVER CENTRAL AND SOUTHERN LAKE MICHIGAN. THIS WILL OCCUR
AS LOW PRESSURE AROUND 29.7 INCHES STRETCHING FROM CENTRAL INDIANA
INTO WESTERN OHIO WILL SLOWLY MOVE INTO THE LOWER GREAT LAKES AND
EASTERN OHIO BY EARLY THIS EVENING, WHILE A RIDGE OF HIGH
PRESSURE AROUND 30.0 INCHES STRETCHES FROM JAMES BAY TO LAKE
SUPERIOR TO THE UPPER MISSISSIPPI RIVER VALLEY. WINDS WILL
GRADUALLY DIMINISH LATE TONIGHT. HIGH PRESSURE AROUND 30.0 INCHES
THEN BUILDS ACROSS LAKE MICHIGAN ON MONDAY AND SLOWLY MOVES TOWARD
THE LOWER GREAT LAKES MONDAY NIGHT. WINDS REMAIN LIGHT AND
VARIABLE THROUGH THIS TIME. NEXT CHANCES FOR THUNDERSTORMS RETURN
TUESDAY NIGHT THROUGH WEDNESDAY NIGHT AS A WEAK FRONT MOVES
SOUTHWARD THROUGH THE REGION.
LMZ261-362-364-366-563-565-567-868-022115-
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-
845 AM CDT SUN AUG 2 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH TO
30 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
TONIGHT
NORTH WINDS TO 30 KT BECOMING NORTHEAST 5 TO 10 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY
NORTHEAST WINDS 5 TO 10 KT BACKING TO SOUTHWEST. WAVES
1 TO 2 FT.
MONDAY NIGHT
SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT
OVERNIGHT. WAVES 1 TO 2 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
1 TO 3 FT BUILDING TO 2 TO 4 FT.
TUESDAY NIGHT
SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT. SHOWERS LIKELY. WAVES 2 TO 4 FT.
WEDNESDAY
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. CHANCE OF
SHOWERS. WAVES 1 TO 2 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO
20 KT. WAVES 1 TO 2 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-022115-
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-
845 AM CDT SUN AUG 2 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
NORTHEAST WINDS 15 TO 25 KT BECOMING NORTH TO
30 KT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
TONIGHT
NORTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT LATE
IN THE EVENING, THEN BECOMING NORTHEAST 10 TO 20 KT AFTER
MIDNIGHT DIMINISHING TO 10 TO 15 KT LATE. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT.
MONDAY
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH 10 TO 15 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
MONDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT VEERING TO SOUTH 5 TO
10 KT. WAVES 1 TO 2 FT.
TUESDAY
SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 10 TO
15 KT. WAVES 2 TO 4 FT.
WEDNESDAY
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS. WAVES 1 TO 2 FT.
THURSDAY
SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
15 KT. WAVES 1 FT OR LESS.
LMZ761-022115-
MAFOR 0216/
MICHIGAN NORTH 11130 12840 11830 11120 11110 11100 11800. WAVES 3
TO 6 FEET THIS AFTERNOON. WAVES 3 TO 6 FEET SUBSIDING TO 1 TO 3
FEET TONIGHT. WAVES 2 FEET OR LESS MONDAY MORNING.
MICHIGAN SOUTH 11830 12840 11830 11120 11110 12100. WAVES 3 TO 6
FEET BUILDING TO 4 TO 7 FEET THIS AFTERNOON. WAVES 4 TO 7 FEET
SUBSIDING TO 2 TO 4 FEET TONIGHT. WAVES 1 TO 3 FEET MONDAY
MORNING.
SHEPPARD
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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