772
FZUS63 KMKX 160911
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
411 AM CDT FRI OCT 16 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
LOW PRESSURE OF 29.7 INCHES OVER NORTHEAST IL WILL DEEPEN TO
AROUND 29.4 INCHES AS IT SHIFTS INTO THE EASTERN GREAT LAKES
THROUGH TODAY. EXPECT A NORTHERLY WIND SHIFT TONIGHT TO INCREASE
TO HIGH-END GALES BY LATE THIS MORNING AS THE LOW DEPARTS WHILE A
STRONG HIGH PRESSURE AROUND 30.7 INCHES BUILDS INTO THE PLAINS. A
GALE WARNING REMAINS IN EFFECT FOR ALL OF THE OPEN WATERS OF LAKE
MICHIGAN LATER THIS MORNING INTO TONIGHT.
LIGHT RAIN WILL CONTINUE OVER THE NORTH HALF OVERNIGHT, WITH
INTERMITTENT RAIN OVER THE SOUTH HALF. LAKE EFFECT SHOWERS AND A
FEW THUNDERSTORMS ARE POSSIBLE TODAY ALONG THE BACK SIDE OF
DEPARTING LOW PRESSURE. A FEW WATERSPOUTS ARE POSSIBLE IN THE
SHOWERS/THUNDERSTORMS, PARTICULARLY OVER THE SOUTH HALF OF LAKE
MICHIGAN.
AS THE HIGH SINKS TOWARD THE OHIO RIVER VALLEY ON SATURDAY, STRONG LOW
PRESSURE AROUND 29.0 INCHES WILL DEVELOP IN NORTHERN MANITOBA
THROUGH THE WEEKEND. THE TIGHT PRESSURE GRADIENT MAY BRING
SOUTHWEST GALES TO LAKE MICHIGAN ON SUNDAY, PRIMARILY OVER THE
NORTH HALF.
LMZ261-362-364-366-563-565-567-868-161515-
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-
411 AM CDT FRI OCT 16 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
LATE TONIGHT...
TODAY
NORTH WINDS TO 30 KT INCREASING TO GALES TO 45 KT. RAIN
SHOWERS LIKELY THIS MORNING, THEN SLIGHT CHANCE OF RAIN SHOWERS
THIS AFTERNOON. SLIGHT CHANCE OF WATERSPOUTS THIS AFTERNOON.
WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT BUILDING TO 12 TO 16 FT
OCCASIONALLY TO 21 FT.
TONIGHT
NORTH GALES TO 40 KT BECOMING NORTHWEST 10 TO 20 KT.
WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT SUBSIDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
SATURDAY
NORTHWEST WINDS 10 TO 15 KT BECOMING WEST 15 TO 25 KT
LATE IN THE MORNING, THEN BECOMING SOUTHWEST TO 30 KT EARLY IN
THE AFTERNOON INCREASING TO GALES TO 35 KT LATE. WAVES 3 TO 5 FT
BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
SATURDAY NIGHT
SOUTHWEST GALES TO 35 KT. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT BUILDING TO 8 TO 11 FT OCCASIONALLY TO
14 FT.
SUNDAY
SOUTHWEST GALES TO 40 KT. WAVES 10 TO 14 FT
OCCASIONALLY TO 18 FT.
SUNDAY NIGHT
SOUTHWEST GALES TO 40 KT. WAVES 8 TO 12 FT
OCCASIONALLY TO 16 FT SUBSIDING TO 7 TO 10 FT OCCASIONALLY TO
13 FT.
MONDAY
SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT.
TUESDAY
EAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-161515-
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-
411 AM CDT FRI OCT 16 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
LATE TONIGHT...
TODAY
NORTHWEST WINDS TO 30 KT BECOMING NORTH GALES TO 45 KT.
SLIGHT CHANCE OF WATERSPOUTS. CHANCE OF SHOWERS THIS MORNING,
THEN CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS
AFTERNOON. WAVES 8 TO 12 FT OCCASIONALLY TO 16 FT BUILDING TO
14 TO 18 FT OCCASIONALLY TO 23 FT.
TONIGHT
NORTH GALES TO 40 KT DIMINISHING TO 15 TO 25 KT.
SLIGHT CHANCE OF WATERSPOUTS IN THE EVENING. CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN SLIGHT CHANCE OF RAIN SHOWERS
OVERNIGHT. WAVES 14 TO 18 FT OCCASIONALLY TO 23 FT SUBSIDING TO
8 TO 12 FT OCCASIONALLY TO 16 FT.
SATURDAY
NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT LATE IN THE MORNING, THEN BECOMING SOUTHWEST 10 TO 20 KT
EARLY IN THE AFTERNOON INCREASING TO 30 KT LATE. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
SATURDAY NIGHT
SOUTHWEST WINDS TO 30 KT. WAVES 6 TO 9 FT
OCCASIONALLY TO 12 FT.
SUNDAY
SOUTHWEST WINDS TO 30 KT. WAVES 8 TO 12 FT OCCASIONALLY
TO 16 FT.
SUNDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO
25 KT. WAVES 8 TO 11 FT OCCASIONALLY TO 14 FT SUBSIDING TO 5 TO
8 FT OCCASIONALLY TO 10 FT.
MONDAY
SOUTHWEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT SUBSIDING
TO 2 TO 4 FT.
TUESDAY
EAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
LMZ761-161515-
MAFOR 1610/
MICHIGAN NORTH...GALE WARNING IN EFFECT...12846 11850 11860 12850
11840 11830. WAVES 3 TO 6 FEET BUILDING TO 10 TO 15 FEET TODAY.
WAVES 10 TO 15 FEET SUBSIDING TO 4 TO 7 FEET TONIGHT.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...12740 11756 11866 11860
12850 11830. WAVES 8 TO 11 FEET BUILDING TO 13 TO 17 FEET TODAY.
WAVES 13 TO 18 FEET SUBSIDING TO 9 TO 12 FEET TONIGHT.
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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