Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 221344
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
844 AM CDT WED JUL 22 2015

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 30.0 INCHES WILL REMAIN OVER THE
GREAT LAKES REGION THROUGH EARLY FRIDAY. LOW PRESSURE AROUND 29.5
INCHES IS EXPECTED TO DEVELOP OVER THE NORTHERN PLAINS ON
THURSDAY. THIS LOW IS EXPECTED TO TRACK NORTHEAST TOWARD JAMES BAY
BY SATURDAY. A COLD FRONT TRAILING FROM THIS LOW SHOULD SWEEP
ACROSS THE LAKE ON SATURDAY NIGHT OR EARLY SUNDAY. HIGH PRESSURE
OF 30.0 INCHES WILL SPREAD BACK ACROSS THE GREAT LAKES REGION
BEHIND THE FRONT SUNDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-222130-
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-
844 AM CDT WED JUL 22 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TODAY...WEST WINDS 5 TO 10 KT BACKING TO SOUTH BY MID
AFTERNOON. WAVES 1 TO 2 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTHEAST 5 TO 10
KT LATE. WAVES 1 TO 2 FT.
.THURSDAY...SOUTHEAST WINDS 5 TO 10 KT BECOMING VARIABLE IN THE
AFTERNOON. WAVES 1 FT OR LESS.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST.
WAVES 1 TO 2 FT.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT.
WAVES 1 TO 3 FT.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.SUNDAY...SOUTHWEST WINDS 5 TO 10 KT VEERING TO NORTH. WAVES 1 FT
OR LESS.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-222130-
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-
844 AM CDT WED JUL 22 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TODAY...VARIABLE WINDS AROUND 5 KT BECOMING SOUTHEAST 5
TO 10 KT EARLY THIS AFTERNOON. WAVES 1 TO 2 FT.
.TONIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST 5 TO 10 KT
AFTER MIDNIGHT. WAVES 1 TO 2 FT.
.THURSDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 FT OR
LESS.
.THURSDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST.
WAVES 1 FT OR LESS.
.FRIDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES 1 TO
2 FT.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 10 TO
15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.SUNDAY...SOUTH WINDS 5 TO 10 KT BACKING TO NORTHEAST 10 TO
15 KT. WAVES 1 FT OR LESS.

$$
LMZ761-222130-
MAFOR 2215/
MICHIGAN NORTH 11600 11500 11400 12510 11410 12300. WAVES 1 TO 2
FT.

MICHIGAN SOUTH 11900 12300 12410 12500 11600. WAVES 1 TO 2 FT.

$$

MTF



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