Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 250754
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
254 AM CDT SUN SEP 25 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 30.3 INCHES WILL SLOWLY MOVE ACROSS
QUEBEC AND NEW ENGLAND TODAY AND TONIGHT. LOW PRESSURE OF 29.7
INCHES OVER SOUTHERN MANITOBA WILL MOVE TO LAKE SUPERIOR MONDAY
AND THEN SLOWLY MOVE TO LAKE HURON TUESDAY NIGHT INTO WEDNESDAY.
AN ASSOCIATED STRONG COLD FRONT WILL MOVE ACROSS THE LAKE TONIGHT.
A RIDGE OF HIGH PRESSURE AVERAGING 30.3 INCHES WILL BUILD ACROSS
PORTIONS OF THE MID AND UPPER MISSISSIPPI VALLEY MIDWEEK.

LMZ261-362-364-366-563-565-567-868-251400-
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-
254 AM CDT SUN SEP 25 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...SOUTHEAST WINDS 15 TO 25 KT INCREASING TO 30 KT. SLIGHT
CHANCE OF SHOWERS THIS MORNING...THEN CHANCE OF SHOWERS AND
THUNDERSTORMS THIS AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TONIGHT...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. SHOWERS WITH
A CHANCE OF THUNDERSTORMS IN THE EVENING...THEN CHANCE OF SHOWERS
AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.MONDAY...WEST WINDS TO 30 KT. A FEW GALE FORCE GUSTS TO 35 KT
POSSIBLE. CHANCE OF SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO 10
FT.
.MONDAY NIGHT...WEST WINDS TO 30 KT. A FEW GALE FORCE GUSTS TO
35 KT POSSIBLE. CHANCE OF SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY
TO 10 FT.
.TUESDAY...WEST WINDS TO 30 KT BECOMING NORTHWEST. CHANCE OF
SHOWERS. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KT BECOMING NORTH 15 TO
25 KT. CHANCE OF SHOWERS. WAVES SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES
2 TO 4 FT.
.THURSDAY...NORTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-251400-
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-
254 AM CDT SUN SEP 25 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH. SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS THIS AFTERNOON. WAVES 4
TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...SOUTH WINDS 15 TO 25 KT BECOMING WEST TO 30 KT.
SHOWERS WITH A CHANCE OF THUNDERSTORMS IN THE EVENING...THEN
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY...WEST WINDS TO 30 KT. A FEW GALE FORCE GUSTS TO 35 KT
POSSIBLE. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.MONDAY NIGHT...WEST WINDS TO 30 KT. A FEW GALE FORCE GUSTS TO
35 KT POSSIBLE. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.TUESDAY...WEST WINDS TO 30 KT. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO
25 KT. CHANCE OF SHOWERS. WAVES SUBSIDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH. CHANCE
OF SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$

LMZ761-251400-
MAFOR 2509/
MICHIGAN NORTH 12330 12340 11346 11446 11440 11540. CHANCE OF
THUNDERSTORMS THIS AFTERNOON AND THIS EVENING. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT TONIGHT.

MICHIGAN SOUTH 14330 12436 11546 11640. CHANCE OF THUNDERSTORMS
THIS AFTERNOON AND THIS EVENING. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.

$$

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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