Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 221055 AAA
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
555 AM CDT WED APR 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...LOW PRESSURE OF 29.1 INCHES CENTERED JUST SOUTH OF
JAMES BAY WILL GRADUALLY MOVE EAST TO THE NEW ENGLAND COAST BY
THURSDAY. A LARGE RIDGE OF HIGH PRESSURE AVERAGING 30.2 INCHES
WILL BUILD ACROSS THE CANADIAN PRAIRIES AND SOUTHEAST INTO THE
OHIO VALLEY WHERE IT WILL GENERALLY REMAIN FOR SEVERAL DAYS. THE
RIDGE AXIS WILL PASS OVER THE LAKE FRIDAY THEN EAST SATURDAY. LOW
PRESSURE OF 29.5 WILL MOVE FROM THE CENTRAL PLAINS TO THE
TENNESSEE VALLEY THIS WEEKEND.

LMZ261-362-364-366-563-565-567-868-221515-
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-
555 AM CDT WED APR 22 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KT. SNOW SHOWERS MAINLY IN
THE EVENING. WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO
20 KT. CHANCE OF RAIN AND SNOW SHOWERS. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH
10 TO 15 KT. WAVES 1 TO 3 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. WAVES 1 TO 2 FT.
.SATURDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. WAVES
1 TO 3 FT.
.SUNDAY...NORTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-221515-
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-
555 AM CDT WED APR 22 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...NORTHWEST WINDS 15 TO 25 KT BECOMING WEST THIS
MORNING...THEN DIMINISHING TO 10 TO 20 KT LATE. SLIGHT CHANCE OF
RAIN AND SNOW SHOWERS THIS MORNING. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING SOUTHWEST 5 TO
10 KT EARLY IN THE AFTERNOON. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...WEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES
1 TO 3 FT.
.FRIDAY...NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT.
WAVES 1 TO 3 FT.
.FRIDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING EAST. WAVES
1 TO 3 FT.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF RAIN. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 3 FT OVERNIGHT.
.SUNDAY...NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$
LMZ761-221515-
MAFOR 2210/
MICHIGAN NORTH 12730 12737 14727. CHANCE OF SHOWERS TODAY. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT TONIGHT.

MICHIGAN SOUTH 12730 11630 12620 13720. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT
THIS EVENING...THEN TO 2 TO 4 FT TONIGHT.

$$

KMD


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