Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 231948
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
248 PM CDT SAT JUL 23 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...LOW PRESSURE OF 29.5 INCHES OVER THE SOUTHERN
SASKATCHEWAN AND MANITOBA BORDER WILL MOVE INTO FAR WESTERN
ONTARIO BY MIDDAY SUNDAY HAVING DEEPENED SLIGHTLY. THE LOW WILL
THEN REDEVELOP EAST OVER JAMES BAY SUNDAY NIGHT. A COOL FRONTAL
BOUNDARY STRETCHING SOUTHWARD FROM THE LOW WILL MOVE SOUTHEAST
ACROSS LAKE MICHIGAN FROM LATE SUNDAY AFTERNOON THROUGH SUNDAY
EVENING. HIGH PRESSURE OF 29.9 INCHES WILL STRETCH FROM THE
CANADIAN PRAIRIES TO THE CENTRAL PLAINS SUNDAY AFTERNOON THEN MOVE
OVER LAKE MICHIGAN WITH A PRESSURE NEAR 30.1 INCHES LATER MONDAY.
THE HIGH WILL GRADUALLY MOVE EASTWARD ACROSS THE LAKE AND EXIT TO
THE EAST LATER WEDNESDAY.

LMZ261-362-364-366-563-565-567-868-240330-
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-
248 PM CDT SAT JUL 23 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST 10 TO 20 KT
LATE THIS EVENING...THEN BECOMING SOUTH 15 TO 25 KT AFTER
MIDNIGHT INCREASING TO 30 KT LATE. HAZE. CHANCE OF SHOWERS AND
THUNDERSTORMS THIS EVENING...THEN SHOWERS AND THUNDERSTORMS
OVERNIGHT. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. HAZE IN THE
MORNING. SHOWERS AND THUNDERSTORMS LIKELY IN THE MORNING... THEN
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.MONDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 15 KT
IN THE AFTERNOON. WAVES 2 TO 4 FT.
.MONDAY NIGHT...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
.TUESDAY...SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 2 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KT. CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.WEDNESDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 FT OR LESS.
.THURSDAY...NORTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS. WAVES
1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240330-
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-
248 PM CDT SAT JUL 23 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
20 KT...THEN INCREASING TO 15 TO 25 KT LATE. HAZE. CHANCE OF
SHOWERS AND THUNDERSTORMS THIS EVENING...THEN SHOWERS AND
THUNDERSTORMS LIKELY OVERNIGHT. WAVES 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. HAZE IN THE
MORNING. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. WAVES 2 TO 4 FT.
.MONDAY...NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.MONDAY NIGHT...NORTHWEST WINDS 5 TO 10 KT BECOMING WEST. WAVES
1 TO 2 FT.
.TUESDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 FT OR
LESS.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES
1 FT OR LESS.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES
1 FT OR LESS.
.THURSDAY...EAST WINDS 10 TO 15 KT BECOMING NORTHEAST. CHANCE OF
SHOWERS. WAVES 1 TO 2 FT.

$$

LMZ761-240330-
MAFOR 2321/
MICHIGAN NORTH 12200 11320 11430 12439 12530. CHANCE OF SHOWERS
AND THUNDERSTORMS EARLY THIS EVENING. WAVES 1 TO 2 FT BUILDING TO
2 TO 4 FT TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUNDAY.

MICHIGAN SOUTH 11200 11300 11410 11420 11439 11420 11430 11530.
CHANCE OF SHOWERS AND THUNDERSTORMS EARLY THIS EVENING AND
SUNDAY. WAVES 1 TO 3 FT TONIGHT. WAVES 2 TO 4 FT SUNDAY.

$$

MDB



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