155
FZUS63 KMKX 162021
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
321 PM 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 AROUND 29.4 INCHES WILL CONTINUE TO MOVE WELL EAST
OF THE REGION TONIGHT, AS STRONG HIGH PRESSURE AROUND 30.6
INCHES REMAINS OVER THE CENTRAL PLAINS. NORTH GALES ARE EXPECTED
TO LINGER INTO THIS EVENING ACROSS LAKE MICHIGAN, BEFORE TAPERING
OFF LATER TONIGHT. A GALE WARNING REMAINS IN EFFECT FOR ALL OF
THE OPEN WATERS OF LAKE MICHIGAN UNTIL 1 AM CDT SATURDAY MORNING.
SCATTERED TO NUMEROUS SHOWERS WILL LINGER INTO THIS EVENING
ACROSS THE LAKE, WITH A FEW THUNDERSTORMS AND A WATERSPOUT
POSSIBLE OVER THE SOUTH HALF OF LAKE MICHIGAN.
AS THE HIGH SHIFTS TOWARD THE OHIO RIVER VALLEY ON SATURDAY,
STRONG LOW PRESSURE AROUND 29.0 INCHES WILL DEVELOP IN SOUTH
CENTRAL CANADA, SHIFTING TOWARD AND INTO HUDSON BAY ON SUNDAY.
THIS MAY BRING SOUTHWEST GALES TO FAR NORTHERN PORTIONS OF LAKE
MICHIGAN SATURDAY NIGHT INTO SUNDAY NIGHT.
HIGH PRESSURE AROUND 30.5 INCHES SHOULD DEVELOP EAST NORTHEAST
OF THE REGION NEXT WEEK, BRINGING DRY CONDITIONS AND LIGHT TO
MODEST WINDS.
LMZ261-362-364-366-563-565-567-868-170315-
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-
321 PM CDT FRI OCT 16 2026
SHEBOYGAN WI TO PENTWATER MI NORTH...
..GALE WARNING IN EFFECT UNTIL 1 AM CDT SATURDAY
TONIGHT
NORTH GALES TO 40 KT BECOMING NORTHWEST 10 TO 20 KT.
WAVES 12 TO 16 FT OCCASIONALLY TO 21 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
SATURDAY
WEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT LATE
IN THE MORNING, THEN BECOMING SOUTHWEST TO 30 KT EARLY IN THE
AFTERNOON. WAVES 2 TO 4 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO
10 FT.
SATURDAY NIGHT
SOUTHWEST GALES TO 35 KT INCREASING TO GALES TO
40 KT. WAVES 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 DIMINISHING TO GALES TO
35 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 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY NIGHT
SOUTHWEST WINDS 10 TO 15 KT DIMINISHING TO LESS
THAN 10 KT. WAVES 1 TO 3 FT.
TUESDAY
SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
WEDNESDAY
SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
LMZ080-669-671-673-675-777-779-870-872-874-876-878-170315-
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-
321 PM CDT FRI OCT 16 2026
SHEBOYGAN WI TO PENTWATER MI SOUTH...
..GALE WARNING IN EFFECT UNTIL 1 AM CDT SATURDAY
TONIGHT
NORTH GALES TO 45 KT DIMINISHING TO 30 KT. SLIGHT
CHANCE OF WATERSPOUTS. SCATTERED RAIN SHOWERS THIS EVENING, THEN
ISOLATED 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 BACKING TO SOUTHWEST 15 TO
25 KT. 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 4 TO
7 FT OCCASIONALLY TO 9 FT.
MONDAY
SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH. WAVES 3 TO
5 FT SUBSIDING TO 1 TO 3 FT.
MONDAY NIGHT
SOUTH WINDS 10 TO 15 KT DIMINISHING TO LESS THAN
10 KT. WAVES 1 TO 2 FT.
TUESDAY
EAST WINDS 5 TO 10 KT DIMINISHING TO LESS THAN 10 KT.
WAVES 1 FT OR LESS.
WEDNESDAY
SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
LMZ761-170315-
MAFOR 1622/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11860 11850 11840 11830
11710 11620 11540 11550. WAVES 11 TO 15 FEET SUBSIDING TO 3 TO 6
FEET TONIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO 7 FEET SATURDAY.
MICHIGAN SOUTH...GALE WARNING IN EFFECT...11860 19866 11850 19856
11850 11840 11820 11810 11620 11530. WAVES 12 TO 16 FEET
SUBSIDING TO 8 TO 11 FEET TONIGHT. WAVES 5 TO 8 FEET SUBSIDING TO
3 TO 5 FEET SATURDAY.
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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