394
FZUS63 KMKX 281959
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
259 PM CDT MON APR 28 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
SOUTHEAST WINDS WILL CONTINUE THIS AFTERNOON AND EVENING AS LOW
PRESSURE OF 29.4 INCHES TRACKS THROUGH CENTRAL MN. WINDS WILL
BECOME EVEN MORE GUSTY LATER THIS AFTERNOON, WITH SOUTHERLY
GALES DEVELOPING ACROSS THE NORTH HALF OF LAKE MICHIGAN. GALES
WILL CONTINUE ACROSS THE NORTH HALF INTO TUESDAY MORNING AND A
GALE WARNING IS IN EFFECT, WITH A SLIGHTLY SHORTENED TIME FRAME
ON THE BACKEND TO 12Z RATHER THAN 15Z. A FEW GUSTS TO GALE
FORCE ARE POSSIBLE IN THE SOUTH HALF SINCE WINDS JUST ABOVE THE
COOL LAKE WATER WILL BE GUSTING TO OVER 40 KT, BUT GALES AT THE
LAKE LEVEL SHOULD NOT BE WIDESPREAD.
MEANWHILE, ISOLATED THUNDERSTORMS ARE POSSIBLE ACROSS THE NORTHERN
HALF OF THE OPEN WATERS LATER THIS AFTERNOON, WITH STRONG TO
SEVERE THUNDERSTORMS POSSIBLE ACROSS THE LAKE THIS EVENING AND
OVERNIGHT. THE MAIN HAZARDS WITH THESE STORMS WOULD BE DAMAGING
WIND AND HAIL. LOW PRESSURE EXITS INTO QUEBEC ON TUESDAY
MORNING, BRINGING A COLD FRONT SOUTHEASTWARD ACROSS THE OPEN
WATERS, ENDING THUNDERSTORM POTENTIAL AND BRINGING WESTERLY
WINDS JUST BELOW GALE FORCE. WINDS WILL DIMINISH QUICKLY TUESDAY
NIGHT AS HIGH PRESSURE AROUND 30.2 INCHES MOVES INTO THE
REGION.
LMZ261-362-364-366-563-565-567-868-290315-
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-
259 PM CDT MON APR 28 2025
SHEBOYGAN WI TO PENTWATER MI NORTH...
..GALE WARNING IN EFFECT THROUGH TUESDAY MORNING
TONIGHT
SOUTH GALES TO 40 KT BECOMING SOUTHWEST GALES TO
35 KT. CHANCE OF RAIN SHOWERS AND THUNDERSTORMS. WAVES 8 TO 11 FT
OCCASIONALLY TO 14 FT SUBSIDING TO 6 TO 9 FT OCCASIONALLY TO
12 FT.
TUESDAY
SOUTHWEST GALES TO 35 KT VEERING TO NORTH. CHANCE OF
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE MORNING.
WAVES 6 TO 9 FT OCCASIONALLY TO 12 FT.
TUESDAY NIGHT
NORTH WINDS TO 30 KT BECOMING NORTHEAST 10 TO
15 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 1 TO
3 FT.
WEDNESDAY
EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.
WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST.
CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 1 TO 2 FT.
THURSDAY
EAST WINDS 10 TO 20 KT BECOMING NORTHEAST. RAIN
SHOWERS LIKELY. WAVES 2 TO 4 FT.
THURSDAY NIGHT
NORTH WINDS 10 TO 20 KT. CHANCE OF RAIN
SHOWERS. WAVES 2 TO 4 FT.
FRIDAY
NORTHWEST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS.
WAVES 2 TO 4 FT.
SATURDAY
WEST WINDS 10 TO 20 KT BACKING TO SOUTHWEST. WAVES
1 TO 3 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-290315-
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-
259 PM CDT MON APR 28 2025
SHEBOYGAN WI TO PENTWATER MI SOUTH...
TONIGHT
SOUTH GALES TO 35 KT BECOMING SOUTHWEST. SLIGHT CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 6 TO 9 FT OCCASIONALLY TO
12 FT.
TUESDAY
SOUTHWEST WINDS TO 30 KT VEERING TO NORTH. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
TUESDAY NIGHT
NORTHEAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
WEDNESDAY
EAST WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES
1 TO 3 FT.
WEDNESDAY NIGHT
EAST WINDS 10 TO 15 KT. RAIN SHOWERS LIKELY IN
THE EVENING, THEN RAIN SHOWERS OVERNIGHT. WAVES 1 TO 3 FT.
THURSDAY
SOUTHEAST WINDS 10 TO 20 KT VEERING TO WEST. RAIN
SHOWERS. WAVES 2 TO 4 FT.
THURSDAY NIGHT
NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO
10 TO 15 KT. RAIN SHOWERS LIKELY. WAVES 2 TO 4 FT.
FRIDAY
NORTHWEST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS.
WAVES 2 TO 4 FT.
SATURDAY
NORTHWEST WINDS 10 TO 20 KT BACKING TO SOUTH. WAVES
1 TO 3 FT.
LMZ761-290315-
MAFOR 2822/
MICHIGAN NORTH...GALE WARNING IN EFFECT...12450 11456 11556 11550
11650 11750 11850. A CHANCE OF THUNDERSTORMS TONIGHT. WAVES 6 TO
10 FEET TONIGHT. WAVES 5 TO 8 FEET TUESDAY.
MICHIGAN SOUTH 11440 12450 12550 11540 11640 11740. WAVES 5 TO 9
FEET TONIGHT. WAVES 5 TO 8 FEET SUBSIDING TO 3 TO 6 FEET TUESDAY.
KUROSKI
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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