Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 240747
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
247 AM CDT FRI JUL 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...HIGH PRESSURE OF 30.0 INCHES CENTERED JUST SOUTH OF
THE GREAT LAKES THIS MORNING WILL MOVE EAST TODAY AND TONIGHT.
LOW PRESSURE OF 29.5 INCHES ACROSS NORTHERN ONTARIO LATE THIS
AFTERNOON WILL MOVE SLOWLY TO JAMES BAY BY SATURDAY MORNING. THIS
WILL STEER A COLD FRONT DOWN THE LAKE SATURDAY MORNING. HIGH
PRESSURE OF 30.0 INCHES WILL BUILD BACK OVER LAKE MICHIGAN
SATURDAY NIGHT INTO THE DAY SUNDAY. A WARM FRONT IS EXPECTED TO
LIFT NORTHWARD OVER THE LAKE SOMETIME LATE IN THE WEEKEND OR EARLY
NEXT WEEK.

LMZ261-362-364-366-563-565-567-868-241530-
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-
247 AM CDT FRI JUL 24 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TODAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 10 TO 20 KT
EARLY THIS AFTERNOON...THEN 15 TO 25 KT BY LATE AFTERNOON. WAVES
1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO
20 KT AFTER MIDNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT LATE.
.SATURDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING SOUTHWEST IN THE
AFTERNOON. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.SUNDAY...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES 1 TO
2 FT.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.TUESDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241530-
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-
247 AM CDT FRI JUL 24 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TODAY...SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 20 KT
EARLY IN THE AFTERNOON. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT IN
THE AFTERNOON.
.TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST AFTER
MIDNIGHT. CHANCE OF SHOWERS AND THUNDERSTORMS...MAINLY OVERNIGHT.
WAVES 2 TO 4 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO 15 KT
LATE IN THE MORNING...THEN NORTH 10 TO 15 KT IN THE AFTERNOON.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 1 TO 3
FT.
.SATURDAY NIGHT...VARIABLE WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.SUNDAY...SOUTHEAST WINDS 5 TO 10 KT. WAVES AROUND 1 FT.
.SUNDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT INCREASING TO 10 TO
15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.TUESDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ761-241530-
MAFOR 2409/
MICHIGAN NORTH 13510 11420 13430 11520. CHANCE OF SHOWERS AND
THUNDERSTORMS TONIGHT. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT THIS AFTERNOON...FURTHER BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT THIS EVENING...THEN SUBSIDING TO 2 TO 4
FT LATE TONIGHT.

MICHIGAN SOUTH 12500 11410 14420 11520. CHANCE OF SHOWERS AND
THUNDERSTORMS OVERNIGHT. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT IN
THE AFTERNOON AND PERSISTING THROUGH TONIGHT.

$$

MTF


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