609
FZUS63 KMKX 311941
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
241 PM CDT MON MAR 31 2025
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 OF 29.3 INCHES OVER EASTERN QUEBEC WILL CONTINUE TO
MOVE EASTWARD, WHILE HIGH PRESSURE OF 30.2 INCHES BUILDS INTO THE
NORTHERN PLAINS THIS EVENING. THEREFORE NORTHWESTERLY WINDS WILL
CONTINUE INTO TONIGHT, BUT THEN WILL BECOME LIGHT AS HIGH PRESSURE
MOVES EASTWARD OVER THE LAKE TONIGHT. WINDS SHIFT TO BECOME
SOUTHEASTERLY INTO TUESDAY MORNING AS LOW PRESSURE OF 29.1 INCHES
DEVELOPS IN THE LEE OF THE COLORADO ROCKIES AND LIFTS
NORTHEASTWARD. AS LOW PRESSURE APPROACHES THE GREAT LAKES REGION,
EXPECTING SOUTHEASTERLY WINDS TO BECOME GUSTY, WITH GALES POSSIBLE
TUESDAY NIGHT INTO WEDNESDAY MIDDAY. LOW PRESSURE THEN LIFTS INTO
NORTHERN MINNESOTA AND BEGINS TO FILL ON WEDNESDAY, SHIFTING WINDS
TO SOUTHERLY, THEN SOUTHWESTERLY AS IT EXITS INTO ONTARIO ON
THURSDAY.
THUNDERSTORMS ARE POSSIBLE ON WEDNESDAY ACROSS THE SOUTHERN TWO-
THIRDS OF THE OPEN WATERS.
LMZ261-362-364-563-010315-
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
241 PM CDT MON MAR 31 2025
STURGEON BAY WI TO POINT BETSIE MI NORTH...
...GALE WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY
AFTERNOON...
TONIGHT
NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT
AFTER MIDNIGHT, THEN DIMINISHING TO 10 TO 15 KT LATE. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 1 TO 3 FT.
TUESDAY
NORTHEAST WINDS 5 TO 10 KT BECOMING SOUTHEAST LATE IN
THE MORNING, THEN INCREASING TO 10 TO 15 KT EARLY IN THE
AFTERNOON BECOMING EAST LATE. WAVES 1 TO 2 FT.
TUESDAY NIGHT
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST GALES
TO 35 KT. CHANCE OF SNOW SHOWERS OVERNIGHT. WAVES 2 TO 4 FT
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
WEDNESDAY
EAST GALES TO 40 KT BECOMING SOUTHEAST. RAIN AND
SNOW SHOWERS IN THE MORNING, THEN RAIN SHOWERS IN THE AFTERNOON.
WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT.
WEDNESDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. RAIN
SHOWERS IN THE EVENING. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
THURSDAY
SOUTHWEST WINDS TO 30 KT BECOMING WEST. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO
10 TO 15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
FRIDAY
NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 1 TO 2 FT.
SATURDAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES
1 TO 3 FT.
LMZ366-565-567-868-010315-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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-
241 PM CDT MON MAR 31 2025
STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...
...GALE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY
AFTERNOON...
TONIGHT
NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
TUESDAY
EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT. WAVES
1 TO 3 FT.
TUESDAY NIGHT
EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST GALES
TO 40 KT. SNOW LIKELY IN THE EVENING, THEN SNOW AND RAIN SHOWERS
OVERNIGHT. WAVES 1 TO 3 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO
14 FT.
WEDNESDAY
SOUTHEAST GALES TO 40 KT DIMINISHING TO 30 KT IN THE
AFTERNOON. RAIN SHOWERS. WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT.
WEDNESDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO
25 KT. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT SUBSIDING TO 5 TO
8 FT OCCASIONALLY TO 10 FT.
THURSDAY
WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 5 TO
10 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
FRIDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
3 FT.
SATURDAY
NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-010315-
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-
241 PM CDT MON MAR 31 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
...GALE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY
AFTERNOON...
TONIGHT
NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO
4 FT.
TUESDAY
EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 2 TO 4 FT.
TUESDAY NIGHT
EAST WINDS 15 TO 25 KT BECOMING SOUTHEAST GALES
TO 40 KT. SNOW LIKELY WITH A CHANCE OF RAIN IN THE EVENING, THEN
RAIN SHOWERS WITH A CHANCE OF RAIN OVERNIGHT. WAVES 2 TO 4 FT
BUILDING TO 10 TO 14 FT OCCASIONALLY TO 18 FT.
WEDNESDAY
SOUTHEAST GALES TO 40 KT BECOMING SOUTH TO 30 KT IN
THE AFTERNOON. RAIN SHOWERS. WAVES 10 TO 14 FT OCCASIONALLY TO
18 FT.
WEDNESDAY NIGHT
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. RAIN SHOWERS, CHANCE OF RAIN AND THUNDERSTORMS IN THE
EVENING. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT SUBSIDING TO 4 TO
7 FT OCCASIONALLY TO 9 FT.
THURSDAY
WEST WINDS 10 TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT SUBSIDING TO 3 TO 5 FT.
THURSDAY NIGHT
NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO
15 KT. WAVES 1 TO 3 FT.
FRIDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO 20 KT.
WAVES 2 TO 4 FT.
SATURDAY
NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. CHANCE OF
RAIN. WAVES 3 TO 5 FT.
LMZ761-010315-
MAFOR 3122/
MICHIGAN NORTH 12830 11820 11110 11100 11200 12210. WAVES 3 TO 5
FEET SUBSIDING TO 1 TO 3 FEET TONIGHT. WAVES 2 FEET OR LESS
TUESDAY.
MICHIGAN SOUTH 12820 11810 12110 11200 12210. WAVES 4 TO 7 FEET
SUBSIDING TO 2 TO 4 FEET TONIGHT. WAVES 1 TO 3 FEET TUESDAY.
BOXELL
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