Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 241948
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
248 PM CDT WED AUG 24 2016

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 AROUND 30.3 INCHES CENTERED OVER THE MID
ATLANTIC COAST WILL CONTINUE TO VERY SLOWLY SLIDE EAST OFF THE
COAST WHILE RIDGING EXTENDS SOUTHWEST THROUGH THE LOWER
MISSISSIPPI VALLEY. MEANWHILE...LOW PRESSURE OF 29.5 INCHES OVER
SOUTHWESTERN ONTARIO WILL GRADUALLY TRACK TO WESTERN QUEBEC BY
THURSDAY MORNING. AN ASSOCIATED WEAK COLD FRONT WILL SLOWLY PUSH
ACROSS LAKE MICHIGAN TONIGHT AND EARLY TOMORROW MORNING. ANOTHER
HIGH AROUND 30.2 INCHES IS THEN FORECAST TO BUILD OVER THE WESTERN
LAKES REGION BY FRIDAY EVENING.

LMZ261-362-364-366-563-565-567-868-250330-
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-
248 PM CDT WED AUG 24 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 15 KT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.THURSDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO 15 KT.
WAVES SUBSIDING TO 1 TO 3 FT.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST.
WAVES 2 TO 4 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...NORTHEAST WINDS LESS THAN 10 KT BECOMING EAST.
WAVES 1 FT OR LESS.
.SATURDAY...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 1 TO 3 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.MONDAY...NORTH WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250330-
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-
248 PM CDT WED AUG 24 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 15 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING...THEN SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST.
WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 2 TO
4 FT SUBSIDING TO 1 TO 3 FT.
.FRIDAY NIGHT...NORTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES
1 TO 2 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST
10 TO 15 KT. SHOWERS AND THUNDERSTORMS LIKELY. WAVES 1 TO 3 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 1 TO
3 FT.
.MONDAY...NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO 15 KT.
WAVES 1 TO 2 FT.

$$

LMZ761-250330-
MAFOR 2421/
MICHIGAN NORTH 11530 11520 11510 12610 12600 11610. WAVES 5 TO 8
FT OCCASIONALLY TO 10 FT SUBSIDING TO 2 TO 4 FT TONIGHT. WAVES 1
TO 3 FT THURSDAY.

MICHIGAN SOUTH 11530 11520 12510 12619 12610. CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING
TO 2 TO 4 FT TONIGHT. WAVES 1 TO 3 FT THURSDAY.

$$

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE (ALL LOWER CASE)

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)



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