Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 181449
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
849 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 NORTHERN ONTARIO
WILL MOVE TO WESTERN QUEBEC BY THIS EVENING. A RIDGE OF HIGH
PRESSURE AVERAGING 30.0 INCHES ACROSS THE NORTHERN PLAINS WILL
MOVE OVER THE GREAT LAKES ON SUNDAY AND TO THE EASTERN LAKES
SUNDAY NIGHT. A 29.5 INCH LOW WILL THEN LIFT FROM THE CENTRAL
PLAINS EARLY MONDAY TO THE NORTHERN REGION OF ONTARIO TUESDAY AND
ONWARD TO HUDSON BAY TUESDAY NIGHT. ANOTHER LOW WILL MOVE NEAR OR
NORTH OF LAKE SUPERIOR ON WEDNESDAY.

LMZ261-362-364-366-563-565-182230-
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-
849 AM CST SAT FEB 18 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TODAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TONIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO 15 KT
LATE. WAVES SUBSIDING TO 1 TO 3 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH IN THE
AFTERNOON. WAVES 1 TO 3 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.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-182230-
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-
849 AM CST SAT FEB 18 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TODAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO
15 KT EARLY IN THE AFTERNOON...AND THEN NORTHWEST LATE IN THE DAY.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.TONIGHT...NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SUNDAY...NORTHWEST WINDS AROUND 10 KT VEERING TO NORTHEAST IN THE
EARLY AFTERNOON. 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.

$$
LMZ761-182230-
MAFOR 1816/
MICHIGAN NORTH 15620 12710. WAVES 2 TO 4 FT THROUGH THIS EVENING
SUBSIDING TO 1 TO 3 FT OVERNIGHT.

MICHIGAN SOUTH 11520 11610 15710. WAVES 2 TO 4 FT SUBSIDING TO 1
TO 3 FT THIS AFTERNOON AND CONTINUING THROUGH SUNDAY MORNING.

$$

MTF

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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