313
FZUS63 KMKX 210450
GLFLM
OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1150 PM CDT FRI SEP 20 2019
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 OF 30.2 INCHES REMAINS NEARLY STATIONARY ACROSS THE
EASTERN SEABOARD. THIS WILL FEED SOUTHERLY WINDS INTO THE GREAT
LAKES AHEAD OF LOW PRESSURE OF 29.5, WHICH WILL LIFT FROM EASTERN
COLORADO INTO SOUTH DAKOTA TONIGHT INTO TOMORROW. WINDS WILL
BECOME GUSTY TOMORROW AFTERNOON INTO TOMORROW NIGHT. GUSTS MAY
APPROACH 30 KTS. A COLD FRONT WILL SWEEP ACROSS LAKE MICHIGAN
SUNDAY AFTERNOON. LOOK FOR WINDS TO VEER TO THE SOUTHWEST THEN
WEST ON SUNDAY, TURNING NORTHWEST SUNDAY NIGHT INTO MONDAY. LIGHT
WINDS RETURN BY MONDAY AFTERNOON AS HIGH PRESSURE MOVES OVERHEAD.
LMZ261-362-364-366-563-565-567-868-210915-
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-
1150 PM CDT FRI SEP 20 2019
SHEBOYGAN WI TO PENTWATER MI NORTH...
..DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT SATURDAY
REST OF TONIGHT
EAST WINDS LESS THAN 10 KT BECOMING SOUTH.
PATCHY FOG. WAVES 1 FT OR LESS.
SATURDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 30 KT. CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 2 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN SHOWERS LIKELY
WITH A CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
SUNDAY
SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
SUNDAY NIGHT
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN CHANCE OF
SHOWERS OVERNIGHT. WAVES 3 TO 5 FT SUBSIDING TO 1 TO 3 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
MONDAY NIGHT
NORTHWEST WINDS 5 TO 10 KT BECOMING WEST. WAVES
1 TO 2 FT.
TUESDAY
SOUTHWEST WINDS 10 TO 15 KT INCREASING TO 15 TO 25 KT.
WAVES 1 TO 2 FT BUILDING TO 1 TO 3 FT.
WEDNESDAY
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SHOWERS. WAVES 3 TO 5 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
LMZ669-671-673-870-210915-
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 WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
1150 PM CDT FRI SEP 20 2019
SHEBOYGAN WI TO PENTWATER MI SOUTH TO WIND POINT WI TO HOLLAND
MI...
..DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT SATURDAY
REST OF TONIGHT
SOUTHEAST WINDS LESS THAN 10 KT BECOMING SOUTH
10 TO 15 KT. PATCHY FOG. WAVES 1 TO 2 FT.
SATURDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 30 KT. CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST.
SHOWERS AND THUNDERSTORMS LIKELY IN THE EVENING, THEN SHOWERS
WITH THUNDERSTORMS LIKELY OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT.
SUNDAY
SOUTHWEST WINDS TO 30 KT. SHOWERS WITH A CHANCE OF
THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
SUNDAY NIGHT
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE EVENING,
THEN CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
MONDAY NIGHT
WEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
TUESDAY
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT.
WAVES 1 TO 3 FT.
WEDNESDAY
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
LMZ080-675-777-779-872-874-876-878-210915-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
1150 PM CDT FRI SEP 20 2019
WIND POINT WI TO HOLLAND MI SOUTH...
REST OF TONIGHT
SOUTHEAST WINDS LESS THAN 10 KT BECOMING SOUTH
10 TO 15 KT. WAVES 1 TO 2 FT.
SATURDAY
SOUTH WINDS 10 TO 15 KT INCREASING TO 30 KT. CHANCE
OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
SATURDAY NIGHT
SOUTH WINDS TO 30 KT BECOMING SOUTHWEST.
SHOWERS AND THUNDERSTORMS LIKELY IN THE EVENING, THEN SHOWERS
WITH THUNDERSTORMS LIKELY OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT.
SUNDAY
SOUTHWEST WINDS TO 30 KT. SHOWERS WITH A CHANCE OF
THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
SUNDAY NIGHT
WEST WINDS 10 TO 20 KT BECOMING NORTHWEST.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE EVENING,
THEN CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
MONDAY
NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
MONDAY NIGHT
WEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
TUESDAY
WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT.
WAVES 1 TO 3 FT.
WEDNESDAY
SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
CHANCE OF SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
LMZ761-210915-
MAFOR 2106 AMD/
MICHIGAN NORTH 11300 19304 11400 19404 13420 11430 11436. CHANCE
OF SHOWERS AND THUNDERSTORMS SATURDAY AFTERNOON. CHANCE OF
THUNDERSTORMS SATURDAY EVENING. WAVES 1 FOOT OR LESS OVERNIGHT.
WAVES 1 FOOT OR LESS BUILDING TO 3 TO 6 FEET SATURDAY. WAVES 5 TO
8 FEET SATURDAY EVENING.
MICHIGAN SOUTH 12400 19404 11410 13420 11429. CHANCE OF SHOWERS
AND THUNDERSTORMS SATURDAY AFTERNOON. WAVES 1 FOOT OR LESS
OVERNIGHT. WAVES 1 TO 3 FEET BUILDING TO 3 TO 6 FEET SATURDAY.
WAVES 4 TO 7 FEET SATURDAY EVENING.
BOXELL
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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