Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 120745
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
245 AM CDT FRI SEP 12 2014

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 30.5 INCHES IS CENTERED OVER THE
NORTHERN PLAINS WITH RIDGING EXTENDING INTO THE GREAT LAKES THIS
MORNING. THE HIGH WILL MOVE OVER THE MID MISSOURI VALLEY TONIGHT
WHILE LOW PRESSURE OF 29.9 INCHES DEVELOPS OVER THE UPPER OHIO
VALLEY AND LIFTS INTO THE EASTERN GREAT LAKES BY SATURDAY
AFTERNOON. THE HIGH WILL THEN BUILD OVER THE EASTERN GREAT LAKES
BY SUNDAY. MEANWHILE ANOTHER LOW OF 29.9 INCHES WILL MOVE EAST
ACROSS THE CANADIAN PRAIRIES SUNDAY ABSORBING INTO A DEEPER LOW
OVER HUDSON BAY AND DRAGGING A COLD FRONT ACROSS LAKE MICHIGAN ON
MONDAY. HIGH PRESSURE OF 30.2 INCHES WILL BUILD IN BEHIND THE
FRONT AND STAY OVER THE GREAT LAKES THROUGH MIDWEEK.

LMZ261-362-364-366-563-565-567-868-121530-
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 AM CDT FRI SEP 12 2014

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO 15 KT.
ISOLATED SHOWERS EARLY THIS AFTERNOON. SHOWERS LATE. WAVES 3 TO 5
FT OCCASIONALLY TO 7 FT.
.TONIGHT...NORTHEAST WINDS 10 TO 15 KT. SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. SLIGHT CHANCE OF
WATERSPOUTS OVERNIGHT. WAVES SUBSIDING TO 2 TO 4 FT.
.SATURDAY...NORTH WINDS 10 TO 15 KT BACKING TO WEST LESS THAN
10 KT. SLIGHT CHANCE OF SHOWERS IN THE MORNING. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SUNDAY...SOUTHWEST WINDS 15 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY...WEST WINDS 10 TO 15 KT. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-121530-
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 AM CDT FRI SEP 12 2014

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...NORTHEAST WINDS 10 TO 20 KT. SCATTERED SHOWERS. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.TONIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST AND
INCREASING TO 30 KT WITH A FEW GALES TO 35 POSSIBLE. SHOWERS IN
THE EVENING...THEN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
OVERNIGHT. SLIGHT CHANCE OF WATERSPOUTS OVERNIGHT. WAVES BUILDING
TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.SATURDAY...NORTH WINDS 15 TO 25 KT DIMINISHING TO 5 TO 10 KT
LATE. CHANCE OF SHOWERS IN THE MORNING. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY NIGHT...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES
SUBSIDING TO 1 TO 3 FT.
.SUNDAY...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. SLIGHT CHANCE OF
SHOWERS. WAVES 2 TO 4 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST 10 TO 20 KT.
CHANCE OF SHOWERS. WAVES 2 TO 4 FT.
.TUESDAY...NORTH WINDS 10 TO 15 KT. WAVES 2 TO 4 FT.

$$

LMZ761-121530-
MAFOR 1209/
MICHIGAN NORTH 13820 11110 14116. SLIGHT CHANCE OF WATERSPOUTS
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TODAY SUBSIDING TO
2 TO 4 FT TONIGHT.

MICHIGAN SOUTH 14120 11120 11826 11736 11746 19756. SCATTERED
SHOWERS TODAY. SLIGHT CHANCE OF WATERSPOUTS OVERNIGHT. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT TODAY. WAVES BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT
TONIGHT.

$$

BMD



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