Great Lakes Forecast
Issued by NWS

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847
FZUS63 KLOT 170242
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
842 PM CST THU FEB 16 2017

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 OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...HIGH PRESSURE RIDGING OF 30.1 INCHES OVER THE EASTERN
GREAT LAKES AND UPPER OHIO VALLEY WILL CONTINUE TO MOVE EAST
THROUGH FRIDAY...AS LOW PRESSURE OF 29.2 INCHES MOVES ACROSS
SASKATCHEWAN AND MANITOBA FRIDAY AND TO JAMES BAY SATURDAY
EVENING. ANOTHER RIDGE AVERAGING 30.0 INCHES WILL BUILD ACROSS THE
NORTHERN PLAINS SATURDAY AND MOVE EAST TO THE EASTERN GREAT LAKES
AND UPPER OHIO VALLEY LATE SUNDAY. A 29.5 INCH LOW WILL LIFT FROM
THE CENTRAL PLAINS EARLY MONDAY TO THE NORTHERN REGION OF ONTARIO
TUESDAY.

LMZ261-362-364-366-563-565-170900-
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-
842 PM CST THU FEB 16 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES
2 TO 4 FT.
.SATURDAY...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
2 FT.
.SUNDAY NIGHT...EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 20 KT
OVERNIGHT. WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.TUESDAY...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 10 TO 20 KT IN
THE AFTERNOON. CHANCE OF RAIN. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-170900-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 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 PENTWATER TO MANISTEE MI 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-
842 PM CST THU FEB 16 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH
TOWARD MORNING. WAVES 1 TO 3 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.SATURDAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO
10 TO 15 KT. WAVES 1 TO 2 FT.
.SUNDAY...WEST WINDS 5 TO 10 KT BACKING TO SOUTH. WAVES 1 TO
2 FT.
.SUNDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.
.TUESDAY...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST 10 TO 20 KT IN
THE AFTERNOON. CHANCE OF RAIN. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$
LMZ761-170900-
MAFOR 1704/
MICHIGAN NORTH 13320 14420 11520. WAVES 2 TO 4 FT.

MICHIGAN SOUTH 12320 14420 12520. WAVES 2 TO 4 FT.

$$

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES



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