Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 191949
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
249 PM CDT MON SEP 19 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...HIGH PRESSURE OF 30.0 INCHES OVER THE OHIO VALLEY WILL
REMAIN IN PLACE INTO TUESDAY. A LOW PRESSURE OF 29.3 INCHES IS
OVER NORTHEAST MANITOBA...WITH AN ASSOCIATED COLD FRONT EXTENDING
SOUTHWEST TO A WEAKER LOW OF 29.7 INCHES OVER THE CENTRAL PLAINS.
THE MAIN LOW OVER CANADA WILL MOVE TO HUDSON BAY OVERNIGHT WHILE
THE COLD FRONT MOVES ACROSS LAKE MICHIGAN. THE COLD FRONT WILL
DISSIPATE TUESDAY AS HIGH PRESSURE SPREADING ACROSS THE MIDDLE AND
UPPER MISSISSIPPI VALLEY MERGES WITH THE HIGH PRESSURE OVER THE
OHIO VALLEY. WEAK HIGH PRESSURE WILL SPREAD EAST ACROSS THE GREAT
LAKES TO NEW ENGLAND BY WEDNESDAY. ANOTHER LOW IS EXPECTED TO
DEVELOP OVER THE CENTRAL PLAINS BY MID WEEK...WITH A WARM FRONT
EXTENDING EAST ACROSS THE UPPER MIDWEST.

LMZ261-362-364-366-563-565-567-868-200330-
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-
249 PM CDT MON SEP 19 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS THIS EVENING. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 2 TO
4 FT.
.TUESDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH 10 TO
15 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHEAST. CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.WEDNESDAY NIGHT...EAST WINDS 10 TO 15 KT. SHOWERS LIKELY. WAVES
1 TO 3 FT.
.THURSDAY...SOUTHEAST WINDS 10 TO 20 KT BACKING TO NORTHEAST
10 TO 15 KT. CHANCE OF SHOWERS. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES
2 TO 4 FT.
.SATURDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-200330-
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-
249 PM CDT MON SEP 19 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...SOUTHWEST WINDS 15 TO 25 KT VEERING TO NORTH 10 TO 20
KT. CHANCE OF SHOWERS AND THUNDERSTORMS THIS EVENING...THEN
SLIGHT CHANCE OF SHOWERS OVERNIGHT. WAVES 2 TO 4 FT.
.TUESDAY...NORTH WINDS 10 TO 15 KT VEERING TO SOUTHEAST 5 TO
10 KT. WAVES 1 TO 3 FT.
.TUESDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO
20 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...SOUTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST 10 TO
15 KT. CHANCE OF SHOWERS. WAVES 1 TO 3 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
CHANCE OF SHOWERS. WAVES 1 TO 3 FT.
.SATURDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST. WAVES 2 TO
4 FT.

$$

LMZ761-200330-
MAFOR 1921/
MICHIGAN NORTH 11530 12630 12630 12620 11520. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT TONIGHT. WAVES 2 TO 4 FT TUESDAY.

MICHIGAN SOUTH 11530 11630 11720 11810 11100 11200 12300. CHANCE
OF SHOWERS AND THUNDERSTORMS THIS EVENING. WAVES 2 TO 4 FT
TONIGHT. WAVES 1 TO 3 FT TUESDAY.

$$


BEACHLER

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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