Great Lakes Forecast
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FZUS63 KLOT 180848
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
248 AM CST SAT FEB 18 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...LOW PRESSURE OF 29.1 INCHES ACROSS MANITOBA WILL MOVE
TO JAMES BAY BY THIS EVENING. A RIDGE OF HIGH PRESSURE AVERAGING
30.0 INCHES WILL BUILD ACROSS THE NORTHERN PLAINS TODAY 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 AND TO HUDSON BAY TUESDAY
NIGHT. ANOTHER LOW WILL MOVE NEAR OR NORTH OF LAKE SUPERIOR ON
WEDNESDAY.

LMZ261-362-364-366-563-565-181630-
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-
248 AM CST SAT FEB 18 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.TODAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 20 KT THIS
MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4
FT.
.TONIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 15 KT.
WAVES 1 TO 3 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 5 TO 10 KT.
WAVES 1 TO 2 FT.
.SUNDAY NIGHT...EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT
OVERNIGHT. WAVES 1 TO 3 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
2 TO 4 FT BUILDING TO 3 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH. RAIN.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. CHANCE OF RAIN. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
SUBSIDING TO 2 TO 4 FT.
.WEDNESDAY...SOUTHWEST WINDS TO 30 KT. CHANCE OF RAIN. WAVES 3 TO
6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-181630-
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-
248 AM CST SAT FEB 18 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.TODAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST EARLY THIS
MORNING, THEN BECOMING NORTHWEST 10 TO 15 KT THIS AFTERNOON.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.TONIGHT...NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.SUNDAY...NORTHWEST WINDS AROUND 10 KT VEERING TO NORTHEAST.
WAVES 1 TO 2 FT.
.SUNDAY NIGHT...EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.
.MONDAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT. CHANCE
OF RAIN IN THE AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH. RAIN.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST 10 TO 20 KT.
CHANCE OF RAIN. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO
2 TO 4 FT.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.

$$

LMZ761-181630-
MAFOR 1810/
MICHIGAN NORTH 11530 13620 14610. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT SUBSIDING TO 2 TO 4 FT TODAY. WAVES 1 TO 3 FT TONIGHT.

MICHIGAN SOUTH 11520 11620 12610 14710. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT TODAY. WAVES 1 TO 2
FT TONIGHT.

$$


KJB

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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