Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 201945
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
245 PM CDT WED JUL 20 2016

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 HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG
WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES
WHICH WILL OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...HIGH PRESSURE OF 30.2 INCHES CENTERED OVER THE EASTERN
LAKES WILL MOVE TO THE MID ATLANTIC COAST THURSDAY. A 29.5 INCH
LOW OVER NORTHERN MANITOBA WILL TRACK TO NORTHERN QUEBEC THURSDAY
WITH A TRAILING COLD FRONT MOVING DOWN LAKE MICHIGAN THURSDAY
NIGHT AND EARLY FRIDAY. HIGH PRESSURE OF 30.0 INCHES WILL BRIEFLY
BUILD OVER LAKE MICHIGAN FRIDAY NIGHT. MEANWHILE...LOW PRESSURE
MOVING OUT OF THE NORTHERN ROCKIES AND ACROSS THE NORTHERN PLAINS
FRIDAY NIGHT AND SATURDAY WILL LIFT TO QUEBEC SUNDAY NIGHT WITH
ANOTHER COLD FRONT PUSHING ACROSS LAKE MICHIGAN.

LMZ261-362-364-366-563-565-567-868-210315-
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-
245 PM CDT WED JUL 20 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS THIS EVENING...THEN CHANCE OF
SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO
25 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES BUILDING TO 4
TO 6 FT OCCASIONALLY TO 8 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT AFTER MIDNIGHT...THEN BECOMING WEST 10 TO 20 KT LATE.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT SUBSIDING TO 2 TO 4 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...WEST WINDS 10 TO 15 KT VEERING TO NORTH. WAVES
1 TO 2 FT.
.SATURDAY...SOUTH WINDS LESS THAN 10 KT BECOMING SOUTHEAST. WAVES
1 FT OR LESS.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. SHOWERS AND THUNDERSTORMS LIKELY. WAVES 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 1 TO
3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-210315-
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-
245 PM CDT WED JUL 20 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO
20 KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO
3 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO
10 TO 20 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.FRIDAY...WEST WINDS 10 TO 20 KT VEERING TO NORTH 10 TO 15 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT VEERING TO SOUTHEAST.
CHANCE OF THUNDERSTORMS IN THE EVENING. WAVES 1 TO 2 FT.
.SATURDAY...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 TO
2 FT.
.SATURDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH
10 TO 20 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO
3 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.

$$

LMZ761-210315-
MAFOR 2021/
MICHIGAN NORTH 13420 12520 11420 12530. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT TONIGHT...BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT THURSDAY.

MICHIGAN SOUTH 12310 14420 11430 11530. SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 1 TO 3 FT TONIGHT. WAVES 2 TO 4 FT
BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT THURSDAY.

$$



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