Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 020745
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
245 AM CDT SAT MAY 2 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 30.1 INCHES CENTERED OVER THE LOWER
OHIO VALLEY THIS MORNING WILL MOVE INTO THE SOUTHEAST U.S. BY
TONIGHT. LOW PRESSURE OF 29.3 INCHES WILL MOVE FROM THE SOUTHERN
CANADIAN PRAIRIES THIS AFTERNOON TO HUDSON BAY BY SUNDAY MORNING.
A COLD FRONT TRAILING FROM THIS LOW WILL MOVE ACROSS THE WESTERN
GREAT LAKES SUNDAY EVENING AND THEN DOWN THE LAKE SUNDAY NIGHT
AND MONDAY. THE FRONT WILL THEN STALL JUST SOUTH OF THE LAKE
MONDAY NIGHT...BEFORE EVENTUALLY RETURNING NORTHWARD AS A WARM
FRONT MIDWEEK AS LOW PRESSURE ORGANIZES OVER THE NORTHERN HIGH
PLAINS.

LMZ261-362-364-366-563-565-567-868-021545-
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-
245 AM CDT SAT MAY 2 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT BY
LATE MORNING...THEN INCREASING TO 15 TO 25 KT BY EARLY AFTERNOON.
WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT LATE.
.TONIGHT...SOUTH WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KT BECOMING WEST 10 TO
20 KT. SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN SHOWERS
AND THUNDERSTORMS LIKELY OVERNIGHT. WAVES SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 2 TO 4
FT.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.TUESDAY...VARIABLE WINDS LESS THAN 10 KT. WAVES 1 TO 2 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-021545-
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-
245 AM CDT SAT MAY 2 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH LATE THIS
MORNING...THEN INCREASING TO 10 TO 20 KT EARLY THIS AFTERNOON.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.TONIGHT...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.SUNDAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO
20 KT. SHOWERS AND THUNDERSTORMS LIKELY. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.MONDAY...WEST WINDS 10 TO 20 KT VEERING TO NORTH BY EARLY
AFTERNOON. SHOWERS AND THUNDERSTORMS LIKELY. WAVES 1 TO 3 FT.
.MONDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.TUESDAY...EAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.

$$

LMZ761-021545-
MAFOR 0210/
MICHIGAN NORTH 12510 11420 14430 11430. WAVES 1 TO 3 FT BUILDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT LATE THIS AFTERNOON AND
PERSISTING TONIGHT.

MICHIGAN SOUTH 12510 11410 14420 11420. WAVES 1 TO 3 FT BUILDING
TO 2 TO 4 FT TODAY AND PERSISTING TONIGHT.

$$

MTF


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