Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 241955
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
255 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.

LMZ261-362-364-366-563-565-567-868-250315-
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 24 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO 20 KT
FROM LATE EVENING ON. AREAS OF FOG. SHOWERS. A CHANCE OF
THUNDERSTORMS FROM LATE EVENING ON. WAVES 1 TO 3 FT BUILDING TO 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250315-
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 24 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST BY LATE
EVENING...THEN SOUTH 15 TO 25 KT OVERNIGHT. AREAS OF FOG. SHOWERS
LIKELY WITH SLIGHT CHANCE OF THUNDERSTORMS THIS EVENING...THEN
CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 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.

$$

LMZ761-250315-
MAFOR 2422/
MICHIGAN NORTH 12416 13526 12436 11434. CHANCE OF THUNDERSTORMS
FROM LATE EVENING THROUGH MONDAY MORNING. CHANCE OF SHOWERS MONDAY
AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT TONIGHT. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO
9 FT MONDAY.

MICHIGAN SOUTH 12226 11326 12434 12446 11544. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT TONIGHT. WAVES BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT MONDAY.

$$

MTF



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