Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 211333
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
833 AM CDT THU MAY 21 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 30.4 INCHES IS CENTERED OVER THE
CENTRAL PLAINS AND STRETCHES INTO THE MIDWEST. A TROUGH OF LOW
PRESSURE AVERAGING 29.9 INCHES LIES OVER LAKE SUPERIOR THIS
MORNING. THE TROUGH WILL SLOWLY SLIDE SOUTH CLEARING THE SOUTH END
OF LAKE MICHIGAN BY EARLY FRIDAY. A 30.3 INCH HIGH WILL BUILD OVER
THE WESTERN LAKES FRIDAY...THEN MOVE TO THE MID ATLANTIC COAST
SATURDAY AS A 29.7 INCH LOW DEVELOPS OVER THE CENTRAL PLAINS.

LMZ261-362-364-366-563-565-567-868-212145-
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-
833 AM CDT THU MAY 21 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TODAY...SOUTHWEST WINDS 10 TO 15 KT VEERING TO
WEST 10 TO 20 KT LATE IN THE AFTERNOON. SCATTERED SHOWERS THIS
AFTERNOON. WAVES 2 TO 4 FT.
.TONIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT
LATE. WAVES 2 TO 4 FT.
.FRIDAY...NORTH WINDS 5 TO 10 KT BACKING TO SOUTH 10 TO 15 KT.
WAVES 1 TO 3 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO
10 TO 20 KT. WAVES SUBSIDING TO 2 TO 4 FT.
.SUNDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT.
WAVES 1 TO 3 FT.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO 25 KT.
SHOWERS AND THUNDERSTORMS LIKELY. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-212145-
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-
833 AM CDT THU MAY 21 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

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

$$
LMZ761-212145-
MAFOR 2116/
MICHIGAN NORTH 11510 11610 11720 13820 11810 11800. SCATTERED
RAIN SHOWERS THIS AFTERNOON. WAVES 2 TO 4 FT THROUGH TONIGHT.
WAVES 1 TO 3 FT FRIDAY MORNING.

MICHIGAN SOUTH 11610 11510 12520 11720 12820 11800. WAVES 1 TO 3
FT BUILDING TO 2 TO 4 FT THIS AFTERNOON. WAVES 2 TO 4 FT TONIGHT.
WAVES 1 TO 3 FT FRIDAY MORNING.

$$


JEE


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