Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 200157
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
857 PM CDT THU MAR 19 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 CENTERED OVER NEW ENGLAND
WILL CONTINUE TO MOVE EAST TONIGHT...WHILE AN AREA OF LOW
PRESSURE OF 29.7 INCHES TRACKS NORTHEAST ACROSS NORTHERN ONTARIO
AND JAMES BAY. WEAKER RIDGING AVERAGING 30.2 INCHES WILL LINGER
ACROSS THE CENTRAL AND WESTERN LAKES INTO FRIDAY...BEFORE A COLD
FRONTAL TROUGH TRAILING THE CANADIAN LOW PUSHES SOUTH ACROSS
NORTHERN LAKE MICHIGAN IN THE AFTERNOON. THIS COLD FRONT WILL
CONTINUE TO PUSH SOUTH ACROSS CENTRAL AND SOUTHERN LAKE MICHIGAN
FRIDAY NIGHT BEFORE CLEARING THE SOUTH END SATURDAY MORNING. AS
THE FRONT MOVES SOUTH...A WEAK LOW PRESSURE WAVE OF 29.9 INCHES
WILL RIPPLE ALONG THE FRONT AND INTO SOUTHWEST ONTARIO. HIGH
PRESSURE RIDGING AVERAGING 30.3 INCHES WILL THEN BUILD INTO THE
UPPER MIDWEST AND WESTERN LAKES SATURDAY AND SATURDAY
NIGHT...DRIFTING SLOWLY EAST ACROSS THE CENTRAL AND EASTERN LAKES
THROUGH SUNDAY NIGHT.

LMZ261-362-364-366-563-565-567-868-200930-
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-
857 PM CDT THU MAR 19 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...SOUTH WINDS 10 TO 15 KT INCREASING TO
15 TO 25 KT. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.FRIDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT VEERING TO NORTHWEST.
RAIN OR SNOW LIKELY. WAVES 2 TO 4 FT.
.SATURDAY...NORTH WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.SATURDAY NIGHT...NORTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.MONDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.TUESDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 25 KT IN
THE AFTERNOON. WAVES 1 TO 2 FT.

WAVE FORECAST IS FOR ICE FREE AREAS

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-200930-
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-
857 PM CDT THU MAR 19 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...EAST WINDS 10 TO 15 KT VEERING TO SOUTH AT 10
TO 20 KT AFTER MIDNIGHT. WAVES 1 TO 3 FT.
.FRIDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. WAVES 2 TO
4 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. WAVES
2 TO 4 FT.
.SATURDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH. WAVES
2 TO 4 FT.
.SATURDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.MONDAY...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
.TUESDAY...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 2 FT.

$$
LMZ761-200930-
MAFOR 2004/
MICHIGAN NORTH 11410 13420 13530 11527. WAVES 1 TO 3 FT
BUILDING TO 2 TO 4 FT BY FRIDAY MORNING AND TO 3 TO 5 FT
OCCASIONALLY TO 7 FT FRIDAY AND FRIDAY EVENING.

MICHIGAN SOUTH 10210 12310 11420 13430 12520. WAVES 1 TO 3 FT
OVERNIGHT BUILDING TO 2 TO 4 FT FRIDAY AND FRIDAY EVENING.

$$

RATZER


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