Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 250150
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
850 PM CDT SUN MAY 24 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...A HIGH PRESSURE RIDGE AVERAGING 30.1 INCHES ACROSS
THE EASTERN GREAT LAKES WILL SHIFT EAST TONIGHT. LOW PRESSURE OF
29.6 INCHES WILL DEVELOP ACROSS THE UPPER MISSISSIPPI VALLEY BY
DAYBREAK MONDAY. THE LOW WILL MOVE TO LAKE SUPERIOR BY MONDAY
EVENING...THEN WEAKEN AND MOVE INTO CENTRAL QUEBEC BY MIDDAY
TUESDAY. AN ASSOCIATED FRONTAL BOUNDARY WILL REMAIN OVER THE
NORTHERN PORTION OF LAKE MICHIGAN TUESDAY...AS A LOW PRESSURE OF
29.8 INCHES LIFTS NORTHEAST ACROSS LAKE MICHIGAN LATE TUESDAY
NIGHT. A HIGH PRESSURE RIDGE AVERAGING 30.1 INCHES WILL MOVE OVER
THE GREAT LAKES WEDNESDAY NIGHT INTO THURSDAY.

LMZ261-362-364-366-563-565-567-868-250800-
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-
850 PM CDT SUN MAY 24 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KT. AREAS OF FOG.
SHOWERS. CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
.MONDAY...SOUTH WINDS 15 TO 25 KT INCREASING TO 30 KT LATE IN THE
DAY. AREAS OF FOG. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS
IN THE MORNING...THEN CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...SOUTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. AREAS OF FOG. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
AREAS OF FOG. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FT.
.TUESDAY NIGHT...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. AREAS
OF FOG. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE
EVENING...THEN CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT.
WAVES 1 TO 3 FT.
.WEDNESDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT DIMINISHING TO
5 TO 10 KT. WAVES 1 TO 2 FT.
.THURSDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH. WAVES
1 TO 3 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250800-
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-
850 PM CDT SUN MAY 24 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.REST OF TONIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO
25 KT OVERNIGHT. AREAS OF FOG. SHOWERS LIKELY WITH SLIGHT CHANCE
OF THUNDERSTORMS. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST BY EARLY
AFTERNOON. AREAS OF FOG. SHOWERS LIKELY WITH SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING...THEN SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH 10 TO
20 KT. AREAS OF FOG. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTH WINDS 10 TO 20 KT. AREAS OF FOG. SHOWERS LIKELY
WITH A CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10
TO 15 KT. AREAS OF FOG. SHOWERS LIKELY WITH A CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN CHANCE OF SHOWERS AND
THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 10 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 2 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.THURSDAY...SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTHEAST 10 TO
15 KT. WAVES 1 TO 2 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.

$$
LMZ761-250800-
MAFOR 2504/
MICHIGAN NORTH 13326 13436 11440 11540. AREAS OF FOG. CHANCE
OF THUNDERSTORMS OVERNIGHT AND MONDAY MORNING. WAVES 2 TO 4 FT
TONIGHT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT MONDAY.

MICHIGAN SOUTH 11226 11326 11436 12446 12540 11530. AREAS OF
FOG. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
OVERNIGHT AND TO 4 TO 7 FT OCCASIONALLY TO 9 FT MONDAY.

$$



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