Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 271947
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
247 PM CDT TUE SEP 27 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...LOW PRESSURE OF 29.5 INCHES OVER EASTERN LAKE
SUPERIOR WILL MOVE SOUTH ACROSS LAKE MICHIGAN TONIGHT AND THEN TO
THE MID ATLANTIC REGION WEDNESDAY NIGHT WHILE WEAKENING. HIGH
PRESSURE OF 30.4 INCHES WILL BUILD ACROSS ONTARIO AND THE UPPER
MIDWEST WEDNESDAY NIGHT INTO THURSDAY AND REMAIN STATIONARY... AS
THE LOW OVER THE MID ATLANTIC MOVES BACK WEST ACROSS THE SOUTHERN
LAKES REGION FRIDAY INTO SATURDAY AT 30.0 INCHES.

LMZ261-362-364-366-563-565-567-868-280330-
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-
247 PM CDT TUE SEP 27 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...WEST WINDS 15 TO 25 KT VEERING TO NORTHWEST AND DIMINISHING
TO 10 TO 15 KT LATE THIS EVENING...THEN BACKING TO SOUTHEAST AFTER
MIDNIGHT. SLIGHT CHANCE OF WATERSPOUTS. SHOWERS LIKELY WITH
SLIGHT CHANCE OF THUNDERSTORMS THIS EVENING...THEN CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT. WAVES 4 TO 6
FT OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
.WEDNESDAY...EAST WINDS 10 TO 20 KT BECOMING NORTHEAST 15 TO
25 KT. SLIGHT CHANCE OF WATERSPOUTS. CHANCE OF SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS. WAVES 2 TO 4 FT BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.THURSDAY...NORTHEAST WINDS TO 30 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.THURSDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.FRIDAY...NORTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT.
.SATURDAY...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES
1 TO 3 FT.
.SUNDAY...NORTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-280330-
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-
247 PM CDT TUE SEP 27 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...WEST WINDS 15 TO 25 KT BECOMING NORTHWEST 10 TO 20 KT.
SLIGHT CHANCE OF WATERSPOUTS THIS EVENING...THEN CHANCE OF
WATERSPOUTS OVERNIGHT. SHOWERS LIKELY WITH SLIGHT CHANCE OF
THUNDERSTORMS THIS EVENING...THEN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
SUBSIDING TO 2 TO 4 FT.
.WEDNESDAY...NORTH WINDS 10 TO 20 KT BECOMING NORTHEAST TO 30 KT.
CHANCE OF WATERSPOUTS IN THE MORNING...THEN SLIGHT CHANCE OF
WATERSPOUTS IN THE AFTERNOON. SHOWERS LIKELY WITH SLIGHT CHANCE
OF THUNDERSTORMS. WAVES 2 TO 4 FT BUILDING TO 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.THURSDAY...NORTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES
6 TO 9 FT OCCASIONALLY TO 11 FT.
.THURSDAY NIGHT...NORTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.FRIDAY...NORTHEAST WINDS TO 30 KT. CHANCE OF SHOWERS IN THE
MORNING...THEN SHOWERS LIKELY IN THE AFTERNOON. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.FRIDAY NIGHT...NORTHEAST WINDS TO 30 KT DIMINISHING TO 10 TO
20 KT OVERNIGHT. CHANCE OF SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY...NORTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS. WAVES
2 TO 4 FT.
.SUNDAY...NORTH WINDS 10 TO 15 KT. CHANCE OF SHOWERS. WAVES 1 TO
2 FT.

$$

LMZ761-280330-
MAFOR 2721/
MICHIGAN NORTH 11646 11636 11716 12310 11220 12130. CHANCE OF
SHOWERS LATE THIS EVENING. CHANCE OF SHOWERS WEDNESDAY. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT TONIGHT. WAVES 2
TO 4 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT WEDNESDAY.

MICHIGAN SOUTH 11640 11636 11716 12726 11826 12136. CHANCE OF
SHOWERS EARLY THIS EVENING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT
SUBSIDING TO 2 TO 4 FT TONIGHT. WAVES 2 TO 4 FT BUILDING TO 4 TO 6
FT OCCASIONALLY TO 8 FT WEDNESDAY.

$$


KMD

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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