727
FZUS63 KMKX 041346
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
846 AM CDT SAT APR 4 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
EAST WINDS WILL CONTINUE OVER FAR NORTHERN LAKE MICHIGAN THIS
MORNING, WITH GUSTS TO NEAR GALE FORCE. WINDS WILL GRADUALLY VEER
SOUTHWEST ACROSS THE ENTIRE LAKE THROUGH THE DAY AS LOW PRESSURE
AROUND 29.6 INCHES CROSSES THE NORTHERN PORTIONS OF THE LAKE. AS
LOW PRESSURE EXITS INTO ONTARIO AND DEEPENS TO 29.3 INCHES, EXPECT
WINDS TO BECOME WESTERLY AND GUST AGAIN AROUND 30 KT THROUGH
TONIGHT.
WINDS GRADUALLY DIMINISH THROUGH SUNDAY AS LOW PRESSURE EXITS
INTO NORTHERN QUEBEC. A WEAK LOW AROUND 30.0 INCHES IN SOUTHERN
QUEBEC WILL BRING GUSTY CONDITIONS AGAIN SUNDAY NIGHT INTO MONDAY
MORNING, WITH WINDS REMAINING NORTHWESTERLY. AS LOW PRESSURE EXITS
INTO MONDAY NIGHT, WINDS SHIFT NORTHERLY WITH A FEW GUSTS TO GALE
FORCE. HIGH PRESSURE BUILDS INTO THE UPPER MIDWEST INTO TUESDAY,
WITH WINDS BECOMING LIGHT AND VARIABLE. WINDS SHIFT BACK TO
SOUTHERLY AS LOW PRESSURE DEVELOPS IN THE NORTHERN PLAINS INTO
WEDNESDAY. SOUTHERLY GALES WILL BE POSSIBLE MID WEEK.
LMZ261-362-364-366-563-565-567-868-042130-
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-
846 AM CDT SAT APR 4 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
REST OF TODAY
EAST WINDS TO 30 KT VEERING TO SOUTHWEST. RAIN
SHOWERS, FREEZING RAIN AND SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MID MORNING, THEN CHANCE OF RAIN SHOWERS THIS AFTERNOON. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
TONIGHT
SOUTHWEST WINDS TO 30 KT BECOMING WEST. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO
12 FT.
SUNDAY
NORTHWEST WINDS TO 30 KT BECOMING WEST 15 TO 25 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 3 TO 5 FT.
SUNDAY NIGHT
WEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 1 TO 3 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT INCREASING TO 30 KT IN THE
AFTERNOON. CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES 2 TO
4 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
MONDAY NIGHT
NORTH GALES TO 35 KT DIMINISHING TO 30 KT. WAVES
8 TO 11 FT OCCASIONALLY TO 14 FT.
TUESDAY
NORTHWEST WINDS 15 TO 25 KT BACKING TO SOUTHWEST 10 TO
15 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 1 TO
3 FT.
WEDNESDAY
SOUTH GALES TO 35 KT. CHANCE OF RAIN AND SNOW
SHOWERS. WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-042130-
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-
846 AM CDT SAT APR 4 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
REST OF TODAY
SOUTHEAST WINDS TO 30 KT VEERING TO SOUTHWEST.
RAIN SHOWERS LIKELY WITH SLIGHT CHANCE OF THUNDERSTORMS THROUGH
MID MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS THIS AFTERNOON.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
TONIGHT
WEST WINDS TO 30 KT. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 12 FT.
SUNDAY
NORTHWEST WINDS TO 30 KT BECOMING WEST 10 TO 20 KT.
WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
SUNDAY NIGHT
WEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT INCREASING TO 30 KT IN THE
AFTERNOON. WAVES 3 TO 5 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
MONDAY NIGHT
NORTH WINDS TO 30 KT. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT.
TUESDAY
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST 5 TO 10 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT SUBSIDING TO 3 TO 5 FT.
WEDNESDAY
SOUTH GALES TO 35 KT. WAVES 10 TO 14 FT OCCASIONALLY
TO 18 FT.
LMZ761-042130-
MAFOR 0416/
MICHIGAN NORTH 11346 11440 12540 12640 12740. WAVES 4 TO 7 FEET
SUBSIDING TO 3 TO 6 FEET THIS AFTERNOON. WAVES 3 TO 6 FEET
BUILDING TO 5 TO 8 FEET TONIGHT. WAVES 6 TO 9 FEET SUNDAY
MORNING.
MICHIGAN SOUTH 11530 11540 11640 11630 13640 11740. A CHANCE OF
RAIN SHOWERS LATE THIS MORNING. WAVES 3 TO 6 FEET THIS AFTERNOON.
WAVES 3 TO 6 FEET BUILDING TO 6 TO 9 FEET TONIGHT. WAVES 7 TO 10
FEET SUNDAY 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
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page