Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 221352
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
852 AM CDT MON AUG 22 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 RIDGE OF HIGH PRESSURE OF 30.1 MOVING OVER THE
THE WESTERN GREAT LAKES EARLY THIS MORNING WILL SHIFT EAST TOWARDS
THE ATLANTIC COAST THROUGH TUESDAY. LOW PRESSURE WILL DEVELOP TO
NEAR 29.5 INCHES BY THIS EVENING OVER THE DAKOTAS. THIS LOW WILL
GRADUALLY SHIFT EAST NORTHEASTWARD TOWARDS SOUTH CENTRAL ONTARIO
BY MIDWEEK. AN ASSOCIATED COLD FRONT WILL THEN SWEEP ACROSS LAKE
MICHIGAN BY THURSDAY MORNING.

LMZ261-362-364-366-563-565-567-868-222115-
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-
852 AM CDT MON AUG 22 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...SOUTHWEST WINDS 10 TO 15 KT INCREASING TO 15 TO
25 KT EARLY THIS AFTERNOON INCREASING TO 30 KT LATE. WAVES 2 TO 4
FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...SOUTHWEST WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH TO 30 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY NIGHT...SOUTH WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY...SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING...THEN SHOWERS AND THUNDERSTORMS
LIKELY IN THE AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST
10 TO 20 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 20 KT. WAVES 1 TO 3 FT.
.FRIDAY...NORTHWEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-222115-
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-
852 AM CDT MON AUG 22 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...NORTHWEST WINDS 5 TO 10 KT BECOMING WEST LATE
THIS MORNING...THEN BECOMING SOUTHWEST 10 TO 20 KT EARLY THIS
AFTERNOON BECOMING SOUTH LATE. WAVES 2 TO 4 FT.
.TONIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH. WAVES
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY NIGHT...SOUTH WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.WEDNESDAY...SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT SUBSIDING TO 2 TO 4 FT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 3 FT.
.FRIDAY...NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 1 TO 3 FT.

$$
LMZ761-222115-
MAFOR 2215/
MICHIGAN NORTH 11510 11520 11530 12540 11530 11540 11530. WAVES 2
TO 4 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES 4
TO 7 FT OCCASIONALLY TO 9 FT TONIGHT AND TUESDAY MORNING.

MICHIGAN SOUTH 11610 11520 11420 11430 13530 11520. WAVES 2 TO 4
FT TODAY. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT TONIGHT AND
TUESDAY MORNING.

$$

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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