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FZUS63 KMKX 250808
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
308 AM CDT MON MAY 25 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 30.2 INCHES WILL MOVE FROM LOWER MICHIGAN TO
THE LOWER GREAT LAKES TODAY. THE MOIST SOUTHERLY FLOW OVER THE
COLD WATERS OF LAKE MICHIGAN WILL MAINTAIN DENSE FOG OVER MUCH OF
THE LAKE THIS MORNING. A DENSE FOG ADVISORY IS IN EFFECT. AREAS OF
FOG, POSSIBLY DENSE, MAY CONTINUE INTO THE AFTERNOON.
MODEST SOUTHERLY WINDS WILL CONTINUE TONIGHT INTO TUESDAY, WHILE
HIGH PRESSURE AROUND 30.3 INCHES IS EXPECTED TO BUILD TOWARD
EASTERN HUDSON BAY TUESDAY INTO WEDNESDAY. THIS WILL EVENTUALLY
MOVE A COLD FRONT SOUTHWARD OVER LAKE MICHIGAN FOR TUESDAY NIGHT
AND WEDNESDAY. WINDS WILL SHIFT NORTHEASTERLY AFTER THE FRONTAL
PASSAGE.
LMZ261-362-364-366-563-565-567-868-251530-
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-
308 AM CDT MON MAY 25 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WIDESPREAD DENSE FOG THIS MORNING. WAVES 2 TO 4 FT BUILDING TO
3 TO 5 FT.
TONIGHT
SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST TO 30 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
TUESDAY
SOUTHWEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
TUESDAY NIGHT
SOUTHWEST WINDS 10 TO 20 KT BACKING TO NORTHEAST
5 TO 10 KT OVERNIGHT. WAVES 2 TO 4 FT.
WEDNESDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO
20 KT. WAVES 1 TO 2 FT BUILDING TO 3 TO 5 FT.
WEDNESDAY NIGHT
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST
10 TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO
3 TO 5 FT.
THURSDAY
NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 3 FT.
FRIDAY
NORTHWEST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-251530-
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-
308 AM CDT MON MAY 25 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
TODAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
PATCHY DENSE FOG THIS MORNING. WAVES 1 TO 3 FT BUILDING TO 3 TO
5 FT.
TONIGHT
SOUTH WINDS 10 TO 20 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
TUESDAY
SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
TUESDAY NIGHT
SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 5 TO
10 KT OVERNIGHT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
WEDNESDAY
NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 10 TO
20 KT. WAVES 1 TO 2 FT BUILDING TO 3 TO 5 FT.
WEDNESDAY NIGHT
NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST
10 TO 20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
THURSDAY
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 10 TO
20 KT. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT.
FRIDAY
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 TO
2 FT.
LMZ761-251530-
MAFOR 2510/
MICHIGAN NORTH 11414 11420 19424 11420 14430 11540. WAVES 1 TO 3
FEET BUILDING TO 2 TO 4 FEET TODAY. WAVES 3 TO 6 FEET TONIGHT.
MICHIGAN SOUTH 11414 11410 19414 14420 11430 11420. WAVES 1 TO 3
FEET BUILDING TO 2 TO 4 FEET TODAY. WAVES 3 TO 5 FEET SUBSIDING
TO 2 TO 4 FEET TONIGHT.
GEHRING
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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