Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 210145
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
845 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 WILL BECOME CENTERED OVER
THE MID ATLANTIC REGION BY EARLY THURSDAY. LOW PRESSURE OF 29.5
INCHES OVER NORTHERN MANITOBA WILL TRACK TO NORTHERN QUEBEC DURING
THE DAY...WITH A TRAILING COLD FRONT MOVING SOUTH ACROSS LAKE
MICHIGAN THURSDAY NIGHT AND EARLY FRIDAY. HIGH PRESSURE OF 30.0
INCHES WILL BRIEFLY BUILD OVER LAKE MICHIGAN BEHIND THE FRONT
FRIDAY NIGHT. MEANWHILE...LOW PRESSURE MOVING OUT OF THE NORTHERN
PLAINS SATURDAY WILL LIFT INTO QUEBEC BY SUNDAY NIGHT WITH
ANOTHER COLD FRONT PUSHING ACROSS LAKE MICHIGAN.

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-
845 PM CDT WED JUL 20 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
AREAS OF FOG. A CHANCE OF SHOWERS AND THUNDERSTORMS TOWARD
MORNING. WAVES 2 TO 4 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO
25 KT. AREAS OF FOG IN THE MORNING. 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-210915-
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-
845 PM CDT WED JUL 20 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20
KT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS TOWARD MORNING.
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.

$$
LMZ761-210915-
MAFOR 2103/
MICHIGAN NORTH 11423 12523 11423 11433 11430 12530. CHANCE OF
THUNDERSTORMS THURSDAY AND THURSDAY EVENING. WAVES 2 TO 4 FT
OVERNIGHT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT THURSDAY AND
THURSDAY EVENING.

MICHIGAN SOUTH 12410 12420 13430 11530. CHANCE OF SHOWERS AND
THUNDERSTORMS THURSDAY EVENING. WAVES 1 TO 3 FT OVERNIGHT. WAVES
2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT THURSDAY AND
THURSDAY EVENING.

$$



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