Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 031955
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
255 PM CDT SUN MAY 3 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 29.5 INCHES NORTH OF LAKE SUPERIOR
WILL PUSH A COLD FRONT ACROSS LAKE SUPERIOR TONIGHT. THIS FRONT
WILL THEN MOVE SOUTHWARD ACROSS LAKE MICHIGAN LATE TONIGHT AND
MONDAY...AVERAGING AROUND 29.9 INCHES AS IT DOES. THIS FRONT WILL
THEN STALL JUST SOUTH OF LAKE MICHIGAN MONDAY NIGHT AND TUESDAY...
AS HIGH PRESSURE OF 30.3 INCHES BUILDS ACROSS THE NORTHERN GREAT
LAKES. THE FRONT WILL THEN LIFT BACK NORTH AS A WARM FRONT AS THE
HIGH PRESSURE AREA DEPARTS TUESDAY NIGHT AND WEDNESDAY. ANOTHER
AREA OF LOW PRESSURE AT 29.6 INCHES WILL MOVE FROM THE CENTRAL
PLAINS TO ONTARIO THURSDAY AND FRIDAY AND STEER ANOTHER COLD FRONT
INTO THE LAKES REGION BY SATURDAY.

LMZ261-362-364-366-563-565-567-868-040345-
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-
255 PM CDT SUN MAY 3 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 15 TO 25 KT...
THEN BECOMING WEST 10 TO 20 KT LATE. CHANCE OF SHOWERS AND
THUNDERSTORMS THIS EVENING...THEN SHOWERS AND THUNDERSTORMS
LIKELY OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING
TO 2 TO 4 FT LATE.
.MONDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 10 TO 20 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 2 TO 4
FT.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.TUESDAY...EAST WINDS 10 TO 15 KT BECOMING NORTHEAST. WAVES 1 TO
2 FT.
.TUESDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST.
WAVES 1 TO 2 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 2 TO 4 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-040345-
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-
255 PM CDT SUN MAY 3 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO
20 KT. CHANCE OF SHOWERS AND THUNDERSTORMS THIS EVENING...THEN
SHOWERS AND THUNDERSTORMS LIKELY OVERNIGHT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT LATE.
.MONDAY...WEST WINDS 10 TO 20 KT VEERING TO NORTH. SHOWERS AND
THUNDERSTORMS LIKELY IN THE MORNING...THEN CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 2 TO 4 FT SUBSIDING TO 1 TO
3 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST 10 TO
15 KT. SHOWERS AND THUNDERSTORMS LIKELY OVERNIGHT. WAVES 1 TO
3 FT.
.TUESDAY...EAST WINDS 10 TO 20 KT. SHOWERS AND THUNDERSTORMS
LIKELY IN THE MORNING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE AFTERNOON. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO
10 TO 20 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.

$$

LMZ761-040345-
MAFOR 0322/
MICHIGAN NORTH 12440 12539 11620 11710 12820. CHANCE OF SHOWERS
AND THUNDERSTORMS EARLY THIS EVENING AND MONDAY. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT LATE TONIGHT. WAVES 2
TO 4 FT MONDAY.

MICHIGAN SOUTH 13430 11439 11529 11629 11710 11810. CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY THIS EVENING AND MONDAY. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT TONIGHT.
WAVES 2 TO 4 FT MONDAY.

$$

ED F


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