Great Lakes Forecast
Issued by NWS

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206
FZUS63 KLOT 251952
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
252 PM CDT THU AUG 25 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...A TROUGH OF LOW PRESSURE AVERAGING 29.8 INCHES OVER
ONTARIO AND QUEBEC WILL CONTINUE TO MOVE EAST TONIGHT WITH AN
EXTENDING WEAK COLD FRONT PUSHING THROUGH THE GREAT LAKES. HIGH
PRESSURE OF 30.1 INCHES WILL SPREAD ACROSS THE WESTERN LAKES
REGION BY FRIDAY AFTERNOON AND THEN MOVE SLOWLY EAST BY EARLY
SATURDAY. DEVELOPING LOW PRESSURE OF 29.9 INCHES OVER THE UPPER
MIDWEST SATURDAY AND SATURDAY NIGHT WILL TRACK NORTHEAST INTO
SUNDAY. HIGH PRESSURE OF 30.2 INCHES WILL THEN SPREAD ACROSS THE
GREAT LAKES EARLY NEXT WEEK.

LMZ261-362-364-366-563-565-567-868-260330-
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-
252 PM CDT THU AUG 25 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. WAVES 2 TO 4 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 5 TO
10 KT. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 5 TO 10 KT BACKING TO SOUTHEAST.
WAVES 1 TO 2 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT. SHOWERS AND
THUNDERSTORMS LIKELY. WAVES 2 TO 4 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING WEST. SHOWERS.
WAVES 2 TO 4 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT. WAVES
1 TO 3 FT.
.SUNDAY NIGHT...EAST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 TO
2 FT.
.TUESDAY...SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-260330-
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-
252 PM CDT THU AUG 25 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...WEST WINDS 10 TO 15 KT VEERING TO NORTHWEST 10 TO 20
KT. WAVES 1 TO 3 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT
LATE IN THE MORNING...THEN BECOMING NORTH 5 TO 10 KT EARLY IN THE
AFTERNOON VEERING TO EAST LATE. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST 10 TO
15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 1 TO
2 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
SHOWERS AND THUNDERSTORMS LIKELY. WAVES 2 TO 4 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT VEERING TO NORTH. WAVES 1 TO
3 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 5 TO 10 KT BECOMING EAST. WAVES
1 FT OR LESS.
.MONDAY...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES 1 FT OR
LESS.
.TUESDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES 1 FT
OR LESS.

$$

LMZ761-260330-
MAFOR 2521/
MICHIGAN NORTH 12520 11620 11720 12710 12610. WAVES 2 TO 4 FT
TONIGHT. WAVES 1 TO 3 FT FRIDAY.

MICHIGAN SOUTH 11610 11510 11610 13720 11710 11800. WAVES 1 TO 3
FT.

$$


RODRIGUEZ

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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