Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 231354
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
854 AM CDT SUN AUG 23 2015

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...STRONG LOW PRESSURE FOR SUMMERTIME OF 29.3 INCHES IN
SOUTHWESTERN ONTARIO WILL MOVE SLOWLY EAST TODAY AND THEN
BROADEN AND VERY GRADUALLY WEAKEN JUST NORTH OF LAKE SUPERIOR
TONIGHT. AN ASSOCIATED COLD FRONT WILL MOVE EASTWARD ACROSS THE
LAKE LATE THIS MORNING OR EARLY THIS AFTERNOON. THE LOW IS
EXPECTED TO REACH EASTERN ONTARIO AT 29.5 INCHES MIDDAY MONDAY.
HIGH PRESSURE OF 30.1 INCHES ACROSS THE UPPER MIDWEST ON TUESDAY
NIGHT IS EXPECTED TO SLOWLY BUILD INTO THE WESTERN GREAT LAKES
REGION BY THURSDAY. THIS FEATURE WILL THEN SHIFT SLOWLY SOUTHEAST
BY THE END OF THE WEEK.

LMZ261-362-364-366-563-565-567-868-232145-
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-
854 AM CDT SUN AUG 23 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

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

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-232145-
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-
854 AM CDT SUN AUG 23 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

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

$$
LMZ761-232145-
MAFOR 2315/
MICHIGAN NORTH 11446 19450 11540 11640 14640 11640. SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS THIS MORNING...THEN A CHANCE OF
SHOWERS THIS AFTERNOON. CHANCE OF SHOWERS TONIGHT AND MONDAY
MORNING. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8
FT OCCASIONALLY TO 10 FT BY LATE MORNING. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT TONIGHT AND MONDAY MORNING.

MICHIGAN SOUTH 11430 11530 11630 19640 14630 19640 11740. CHANCE
OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THIS MORNING. CHANCE
OF SHOWERS MONDAY MORNING. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

$$


KREIN


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