Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 191957
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
257 PM CDT TUE MAY 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 REMAINS CENTERED OVER
THE NORTHERN PLAINS THIS AFTERNOON WITH RIDGING EXTENDING TO
SOUTHERN LAKE MICHIGAN. A 29.6 INCH LOW IS CENTERED OVER QUEBEC
WHILE A WEAK TROUGH AVERAGING 30.0 INCHES IS MOVING SOUTH ACROSS
HUDSON BAY. THIS TROUGH WILL MOVE SOUTH ACROSS LAKE MICHIGAN
STARTING LATE WEDNESDAY AND CLEAR THE SOUTH END OF LAKE MICHIGAN
EARLY FRIDAY. HIGH PRESSURE OF 30.3 INCHES WILL BUILD IN BEHIND
THE TROUGH FRIDAY...AND MOVE TO THE EASTERN GREAT LAKES BY
SATURDAY. THE HIGH WILL CONTINUE TO SLIDE EAST ON SUNDAY AS LOW
PRESSURE OVER THE CENTRAL HIGH PLAINS BEGINS TO LIFT NORTHEAST.

LMZ261-362-364-563-200330-
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
257 PM CDT TUE MAY 19 2015

STURGEON BAY WI TO POINT BETSIE MI NORTH

.TONIGHT...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 15
KT...THEN BECOMING WEST 5 TO 10 KT LATE. WAVES 3 TO 5
FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 2 FT TONIGHT.
.WEDNESDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO
20 KT. WAVES 1 TO 3 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST
10 TO 15 KT. WAVES 1 TO 3 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 1 TO
3 FT.
.THURSDAY NIGHT...NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO
10 KT. WAVES 1 TO 2 FT.
.FRIDAY...NORTH WINDS LESS THAN 10 KT BACKING TO SOUTHWEST. WAVES
1 FT OR LESS.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.SUNDAY...SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.

$$

LMZ366-565-567-669-671-868-870-872-200330-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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 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 PENTWATER TO MANISTEE MI 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-
257 PM CDT TUE MAY 19 2015

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO NORTH POINT LIGHT WI
TO GRAND HAVEN MI

.TONIGHT...NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 3 TO
4 FT SUBSIDING TO 1 TO 2 FT.
.WEDNESDAY...NORTHWEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST
10 TO 15 KT. WAVES 1 TO 3 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT.
.THURSDAY NIGHT...NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST 10
TO 20 KT THEN DIMINISHING TO AROUND 10 KT LATE. WAVES 1 TO 3 FT.
.FRIDAY...NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST. WAVES 1 TO
2 FT.
.FRIDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.SATURDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHEAST 10 TO 15 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.

$$

LMZ080-673-675-777-779-874-876-878-200330-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
257 PM CDT TUE MAY 19 2015

NORTH POINT LIGHT WI TO GRAND HAVEN MI SOUTH

.TONIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST AND THEN
DIMINISHING TO 10 TO 15 KT LATE. WAVES 3 TO 4 FT SUBSIDING TO 1 TO
3 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 5 TO 10
KT. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...WEST WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. WAVES 1 TO 3 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT.
.THURSDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT VEERING TO NORTH 10
TO 20 KT THEN DIMINISHING TO AROUND 10 KT LATE. WAVES 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 TO
2 FT.
.FRIDAY NIGHT...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES
1 TO 2 FT.
.SATURDAY...SOUTHEAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.SUNDAY...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.

$$

LMZ761-200330-
MAFOR 1922/
MICHIGAN NORTH 11730 11720 12710 11600 11600 19610 12520. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 2 FT TONIGHT. WAVES
1 TO 3 FT WEDNESDAY.

MICHIGAN SOUTH 11820 13120 11110 11110 12700. WAVES 3 TO 4 FT
TONIGHT SUBSIDING TO 1 TO 3 FT. WAVES 1 TO 2 FT WEDNESDAY.

$$


RC


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