832
FZUS63 KMKX 300740
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
240 AM CDT MON MAR 30 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
MODEST SOUTHWEST WINDS CONTINUE AS A FRONT BEGINS TO APPROACH THE
WATERS FROM THE NORTH. THE FRONT WILL GRADUALLY ADVANCE SOUTH
ACROSS LAKE MICHIGAN THROUGH TUESDAY. THIS WILL RESULT IN
GENERALLY EAST-NORTHEAST WINDS ACROSS THE NORTHERN HALF OF THE
LAKE WITH SOUTHERLY WINDS FURTHER SOUTH. PERIODS OF SHOWERS AND
THUNDERSTORMS WILL ACCOMPANY THE SLOW-MOVING FRONT, WITH A FEW
STRONGER STORMS POSSIBLE TONIGHT AND ONCE AGAIN ON TUESDAY. LARGE
HAIL WOULD BE THE PRIMARY THREAT IN ANY STRONGER STORMS.
WINDS WILL TREND NORTHERLY BEHIND THE DEPARTING COLD FRONT TUESDAY
EVENING THROUGH WEDNESDAY. WILL BE MONITORING TRENDS FOR A FEW GUSTS
APPROACHING GALE FORCE TUESDAY NIGHT INTO WEDNESDAY, WITH THE
CURRENT EXPECTATION BEING FOR ANY SUCH GUSTS TO BE ISOLATED. 30.7
INCH HIGH PRESSURE WILL SHIFT FROM ONTARIO TO QUEBEC THROUGH THE
LATE WEEK TIME PERIOD AS 29.7 INCH LOW PRESSURE APPROACHES FROM
THE SOUTHWEST, ALLOWING WINDS TO TREND EAST-NORTHEASTERLY. WILL
NEED TO WATCH FOR ADDITIONAL ISOLATED GALE POTENTIAL THURSDAY INTO
FRIDAY AS LOW PRESSURE PASSES NEAR OR OVER LAKE MICHIGAN.
LMZ261-362-364-366-563-565-567-868-301515-
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-
240 AM CDT MON MAR 30 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
TODAY
WEST WINDS 10 TO 15 KT VEERING TO NORTHEAST 10 TO 20 KT.
WAVES 2 TO 4 FT.
TONIGHT
NORTHEAST WINDS 15 TO 25 KT BECOMING EAST TO 30 KT.
CHANCE OF RAIN AND THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
RAIN AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 3 TO
5 FT.
TUESDAY
EAST WINDS TO 30 KT BACKING TO NORTH 15 TO 25 KT.
CHANCE OF THUNDERSTORMS IN THE MORNING, THEN CHANCE OF RAIN AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 3 TO 5 FT.
TUESDAY NIGHT
NORTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
WEDNESDAY
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST TO 30 KT.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
WEDNESDAY NIGHT
NORTHEAST WINDS TO 30 KT BECOMING EAST. CHANCE
OF SNOW. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
THURSDAY
EAST GALES TO 40 KT BECOMING NORTHEAST GALES TO
35 KT. RAIN AND FREEZING RAIN. WAVES 8 TO 11 FT OCCASIONALLY TO
14 FT.
FRIDAY
NORTH WINDS 15 TO 25 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.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-301515-
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-
240 AM CDT MON MAR 30 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TODAY
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST. WAVES 1 TO
3 FT.
TONIGHT
SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO
25 KT. CHANCE OF THUNDERSTORMS AND SLIGHT CHANCE OF RAIN IN THE
EVENING, THEN CHANCE OF RAIN AND THUNDERSTORMS OVERNIGHT. WAVES
3 TO 5 FT.
TUESDAY
SOUTH WINDS 15 TO 25 KT VEERING TO WEST TO 30 KT. RAIN
WITH A CHANCE OF THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
TUESDAY NIGHT
NORTH WINDS TO 30 KT. CHANCE OF RAIN. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT.
WEDNESDAY
NORTHEAST WINDS TO 30 KT. CHANCE OF RAIN IN THE
AFTERNOON. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
WEDNESDAY NIGHT
NORTHEAST WINDS TO 30 KT BECOMING EAST. RAIN.
WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT.
THURSDAY
EAST WINDS TO 30 KT. RAIN. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT.
FRIDAY
NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH 10 TO 20 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
LMZ761-301515-
MAFOR 3010/
MICHIGAN NORTH 11520 11710 11110 11120 13130 11240. A CHANCE OF
RAIN AND THUNDERSTORMS THIS EVENING, THEN A CHANCE OF RAIN
OVERNIGHT. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET TODAY.
WAVES 2 TO 4 FEET TONIGHT.
MICHIGAN SOUTH 13420 13320 11430 11530. A CHANCE OF THUNDERSTORMS
THIS EVENING, THEN A CHANCE OF RAIN AND THUNDERSTORMS OVERNIGHT.
WAVES 1 TO 3 FEET TODAY. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4
FEET TONIGHT.
DDV
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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