Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 221344
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
844 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 NEAR 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.

LMZ261-362-364-366-563-565-567-868-222130-
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 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 7 FT OCCASIONALLY TO 9 FT SUBSIDING
TO 3 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...NORTHWEST WINDS 10 TO 20 KT. SNOW SHOWERS MAINLY IN
THE EVENING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-222130-
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 APR 22 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...NORTHWEST WINDS TO 30 KT BECOMING WEST AND DIMINISHING
TO 15 TO 25 KT LATE. 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 3 TO 5 FT
OCCASIONALLY TO 7 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.

$$
LMZ761-222130-
MAFOR 2216/
MICHIGAN NORTH 12730 13720 12720 11730. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
TONIGHT.

MICHIGAN SOUTH 11740 11640 11630 13720 12720. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT TONIGHT.

$$

IZZI


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