Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 220157
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
857 PM CDT WED SEP 21 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 STRETCHES FROM SASKATCHEWAN
INTO THE EASTERN GREAT LAKES THIS EVENING WHILE LOW PRESSURE OF
29.9 INCHES LIES ACROSS THE CENTRAL PLAINS. BY SUNDAY...THE RIDGE
AXIS WILL SHIFT STRETCHING FROM HUDSON BAY INTO THE EASTERN LAKES
WHILE THE LOW LIFTS NORTH ACROSS THE DAKOTAS. THE LOW WILL MOVE
SLOWLY EAST TO LAKE SUPERIOR LATE MONDAY INTO TUESDAY.

LMZ261-362-364-366-563-565-567-868-220930-
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-
857 PM CDT WED SEP 21 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST.
CHANCE OF SHOWERS AND THUNDERSTORMS THIS EVENING...THEN SHOWERS
AND THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 15 KT BACKING TO NORTH 10 TO 20 KT
LATE. SHOWERS AND THUNDERSTORMS LIKELY IN THE MORNING...THEN
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO
3 FT.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF SHOWERS. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.FRIDAY...NORTHEAST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES
3 TO 6 FT OCCASIONALLY TO 8 FT.
.FRIDAY NIGHT...EAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.SATURDAY...EAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT.
.SATURDAY NIGHT...EAST WINDS 10 TO 15 KT BECOMING SOUTHEAST 10 TO
20 KT. WAVES 2 TO 4 FT.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT.
.MONDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220930-
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-
857 PM CDT WED SEP 21 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO
15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.THURSDAY...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST AND THEN
BACKING TO SOUTH LATE. CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
MORNING...THEN SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. WAVES 1 TO 3 FT.
.THURSDAY NIGHT...SOUTH WINDS 5 TO 10 KT BACKING TO NORTHEAST
10 TO 20 KT FROM LATE EVENING ON. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING...THEN CHANCE OF SHOWERS OVERNIGHT.
WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES
2 TO 4 FT.
.FRIDAY NIGHT...EAST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.SATURDAY...EAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 2 TO 4 FT.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST.
WAVES 2 TO 4 FT.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT.

$$
LMZ761-220930-
MAFOR 2203/
MICHIGAN NORTH 11210 12319 11419 11519 11710 11820 11120. CHANCE
OF SHOWERS AND THUNDERSTORMS THIS EVENING AND THURSDAY AFTERNOON
THROUGH THURSDAY EVENING. WAVES 1 TO 3 FT OVERNIGHT AND THURSDAY.
WAVES 2 TO 4 FT THURSDAY EVENING.

MICHIGAN SOUTH 11300 11400 12410 11510 12410 11400. CHANCE OF
SHOWERS AND THUNDERSTORMS OVERNIGHT. CHANCE OF SHOWERS AND
THUNDERSTORMS TONIGHT THROUGH THURSDAY MORNING AND AGAIN THURSDAY
EVENING. WAVES 1 TO 3 FT.

$$

RC

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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