Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 181323
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
823 AM CDT SAT APR 18 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 30.3 INCHES OVER ONTARIO WILL DRIFT EAST THIS
AFTERNOON...WITH A LOW PRESSURE OF 29.5 INCHES SLOWLY LIFTING EAST
THROUGH THE CENTRAL PLAINS AND MID MISSISSIPPI VALLEY
SUNDAY...REACHING NORTHERN INDIANA SUNDAY NIGHT. THIS LOW WILL
THEN LIFT NORTHEAST TO QUEBEC ON MONDAY AS IT STRENGTHENS TO 29.1
INCHES.

LMZ261-362-364-366-563-565-567-868-182130-
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-
823 AM CDT SAT APR 18 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TODAY...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT BY LATE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 15 TO 25 KT
FROM LATE EVENING ON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING EAST. CHANCE OF
SHOWERS IN THE AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY NIGHT...EAST WINDS 15 TO 25 KT BECOMING NORTHEAST.
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS. WAVES 2 TO 4 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...WEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
20 KT. WAVES SUBSIDING TO 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-182130-
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-
823 AM CDT SAT APR 18 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TODAY...NORTHEAST WINDS 15 TO 25 KT. OCCASIONAL 30 KT
GUSTS IN THE MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST 15 TO 25 KT
FROM LATE EVENING ON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY...EAST WINDS 15 TO 25 KT. SHOWERS IN THE AFTERNOON. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT BACKING TO WEST 10 TO
20 KT. SHOWERS. WAVES SUBSIDING TO 2 TO 4 FT.
.MONDAY...WEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES 3 TO 5
FT OCCASIONALLY TO 7 FT.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...WEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 20
KT. WAVES 2 TO 4 FT.

$$
LMZ761-182130-
MAFOR 1816/
MICHIGAN NORTH 12130 12120 13230 11330. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT TODAY TONIGHT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.

MICHIGAN SOUTH 13130 11120 14230. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.

$$

MTF


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