120
FZUS63 KMKX 080803
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
303 AM CDT WED APR 8 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 30.6 INCHES OVER THE LOWER GREAT LAKES WILL
CONTINUE EASTWARD THIS MORNING. LOW PRESSURE AROUND 29.5 INCHES
TRACKING ALONG THE NORTHERN GREAT PLAINS AND CANADIAN BORDER WILL
TRACK NORTH OF LAKE SUPERIOR TONIGHT INTO THURSDAY MORNING. THIS
WILL RESULT IN VERY BREEZY SOUTHERLY WINDS OVER LAKE MICHIGAN ON
WEDNESDAY WITH GALE FORCE GUSTS UP TO 40 KT. A GALE WARNING IS IN
EFFECT FOR THE NORTHERN TWO THIRDS OF THE LAKE.
MUCH LIGHTER WESTERLY WINDS ARE THEN EXPECTED ON THURSDAY IN THE
WAKE OF A COLD FRONT. LIGHT AND VARIABLE WINDS WILL PREVAIL INTO
SATURDAY, UNTIL BREEZY SOUTHERLY WINDS RETURN LATE IN THE WEEKEND.
LMZ261-362-364-366-563-565-567-868-081515-
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-
303 AM CDT WED APR 8 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
...GALE WARNING IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH LATE
TONIGHT...
TODAY
SOUTH WINDS TO 30 KT INCREASING TO GALES TO 35 KT BY MID
MORNING. NUMEROUS SNOW AND RAIN SHOWERS THIS MORNING. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT BUILDING TO 10 TO 14 FT OCCASIONALLY TO
18 FT.
TONIGHT
SOUTH GALES TO 40 KT BECOMING SOUTHWEST GALES TO 35 KT
AFTER MIDNIGHT, THEN DIMINISHING TO 30 KT LATE. RAIN SHOWERS.
WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT SUBSIDING TO 6 TO 9 FT
OCCASIONALLY TO 12 FT.
THURSDAY
SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO
20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT VEERING TO
NORTHEAST. CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 1 TO 3 FT
SUBSIDING TO 1 TO 2 FT.
FRIDAY
NORTH WINDS 5 TO 10 KT BECOMING NORTHWEST. WAVES 1 FT
OR LESS.
FRIDAY NIGHT
EAST WINDS 5 TO 10 KT VEERING TO SOUTH. WAVES
1 FT OR LESS.
SATURDAY
SOUTH WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
SUNDAY
SOUTH WINDS TO 30 KT. RAIN SHOWERS LIKELY. WAVES 6 TO
9 FT OCCASIONALLY TO 12 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO
13 FT.
LMZ669-671-673-870-872-874-081515-
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 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-
303 AM CDT WED APR 8 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH TO WIND POINT WI TO HOLLAND
MI...
...GALE WARNING IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH LATE
TONIGHT...
TODAY
SOUTH WINDS TO 30 KT INCREASING TO GALES TO 35 KT BY MID
MORNING. SCATTERED RAIN SHOWERS WITH ISOLATED SNOW SHOWERS THIS
MORNING. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT BUILDING TO 8 TO 12
FT OCCASIONALLY TO 16 FT.
TONIGHT
SOUTH GALES TO 40 KT BECOMING SOUTHWEST GALES TO 35 KT
AFTER MIDNIGHT, THEN DIMINISHING TO 30 KT LATE. CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN RAIN SHOWERS OVERNIGHT. WAVES 8 TO
12 FT OCCASIONALLY TO 16 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY
TO 12 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 1 TO
3 FT.
THURSDAY NIGHT
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST.
CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FT.
FRIDAY
NORTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FT.
FRIDAY NIGHT
NORTHEAST WINDS 10 TO 15 KT BECOMING EAST 5 TO
10 KT. WAVES 1 TO 2 FT.
SATURDAY
EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES 1 FT
OR LESS.
SUNDAY
SOUTH WINDS TO 30 KT. CHANCE OF RAIN SHOWERS. WAVES
7 TO 10 FT OCCASIONALLY TO 13 FT.
LMZ080-675-777-779-876-878-081515-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
303 AM CDT WED APR 8 2026
WIND POINT WI TO HOLLAND MI SOUTH...
TODAY
SOUTH WINDS TO 30 KT. SCATTERED RAIN SHOWERS THIS
MORNING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT BUILDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
TONIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. RAIN SHOWERS
LIKELY OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
THURSDAY
SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT LATE IN THE MORNING, THEN BECOMING WEST EARLY IN THE
AFTERNOON VEERING TO NORTHEAST 5 TO 10 KT LATE. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 1 TO 3 FT.
THURSDAY NIGHT
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST.
CHANCE OF RAIN SHOWERS IN THE EVENING, THEN RAIN SHOWERS
OVERNIGHT. WAVES 1 TO 2 FT.
FRIDAY
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH 10 TO 15 KT.
RAIN SHOWERS IN THE MORNING, THEN CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. 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.
SUNDAY
SOUTH WINDS 15 TO 25 KT. CHANCE OF RAIN SHOWERS. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
LMZ761-081515-
MAFOR 0810/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11447 11457 11450 19457
12450 11456 11556 11540. WAVES 3 TO 5 FEET BUILDING TO 10 TO 14
FEET TODAY. WAVES 10 TO 14 FEET SUBSIDING TO 5 TO 8 FEET TONIGHT.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...11440 19446 11450 19456
14450 11456 11546. WAVES 2 TO 4 FEET BUILDING TO 7 TO 11 FEET
TODAY. WAVES 7 TO 11 FEET SUBSIDING TO 5 TO 8 FEET 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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page