Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 120132
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
832 PM CDT SAT APR 11 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...A 30.3 INCH HIGH OVER THE WESTERN OHIO VALLEY WILL
SHIFT OVER THE CENTRAL ATLANTIC COAST BY MIDDAY SUNDAY. A COLD
FRONT CONNECTED TO A TROUGH OVER HUDSON BAY WILL SWING OVER THE
LAKE MONDAY MORNING...AND THE TROUGH ASSOCIATED WITH THE COLD
FRONT WILL AVERAGE 29.5 INCHES. HIGH PRESSURE OF 30.3 INCHES WILL
SPREAD OVER THE LAKE TUESDAY BEFORE REACHING NEW ENGLAND
WEDNESDAY EVENING. A SURFACE TROUGH OF LOW PRESSURE AVERAGING 30.0
INCHES WILL MOVE OVER THE WESTERN LAKES LATE NEXT WEEK.

LMZ261-362-364-366-563-565-567-868-120930-
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-
832 PM CDT SAT APR 11 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT LATE. WAVES 2 TO 4 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT. A FEW GALE
FORCE GUSTS TO 35 KT POSSIBLE IN THE AFTERNOON. WAVES BUILDING TO
5 TO 8 FT OCCASIONALLY TO 10 FT.
.SUNDAY NIGHT...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST LATE.
CHANCE OF SHOWERS IN THE EVENING...THEN SHOWERS LIKELY WITH A
CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT.
.MONDAY...WEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS IN THE
MORNING. WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT.
.TUESDAY NIGHT...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 2 FT.
.THURSDAY...SOUTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
CHANCE OF SHOWERS. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-120930-
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-
832 PM CDT SAT APR 11 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT. SLIGHT CHANCE OF SHOWERS IN
THE AFTERNOON. WAVES BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST LATE.
CHANCE OF SHOWERS IN THE EVENING...THEN SHOWERS LIKELY WITH A
CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.MONDAY...WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF SHOWERS IN THE MORNING. WAVES SUBSIDING TO 2 TO 4 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.TUESDAY...NORTHWEST WINDS 10 TO 15 KT BACKING TO SOUTH. WAVES
1 TO 3 FT.
.TUESDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTHEAST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10
KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.

$$
LMZ761-120930-
MAFOR 1204/
MICHIGAN NORTH 12420 12430 11440 12440 19450 11440. CHANCE OF
RAIN SHOWERS SUNDAY EVENING. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT SUNDAY.

MICHIGAN SOUTH 13420 14430 11430. CHANCE OF RAIN SHOWERS SUNDAY
EVENING. WAVES 1 TO 3 FT OVERNIGHT. WAVES 2 TO 4 FT BUILDING TO 4
TO 6 FT OCCASIONALLY TO 8 FT SUNDAY.

$$


KMD


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