Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 231937
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
237 PM 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 OF 29.4 INCHES IN SOUTHWESTERN
ONTARIO WILL MOVE SLOWLY EAST AND VERY GRADUALLY WEAKEN TO 29.5
INCHES OVER CENTRAL ONTARIO BY MONDAY EVENING. AN ASSOCIATED COLD
FRONT HAS PUSHED EAST OF THE LAKE EARLIER TODAY...LEADING TO A
WIND SHIFT TO WESTERLY. THE LOW IS EXPECTED TO REACH JAMES BAY BY
TUESDAY AFTERNOON WHILE WEAKENING FURTHER TO 29.7 INCHES. HIGH
PRESSURE OF 30.1 INCHES OVER THE NORTHERN AND CENTRAL PLAINS WILL
BUILD EAST ACROSS THE MIDDLE MISSISSIPPI AND UPPER OHIO VALLEY
MONDAY NIGHT AND TUESDAY. THE CANADIAN LOW WILL CONTINUE TO SLOWLY
LIFT TO THE NORTHEAST THROUGH MIDWEEK AS HIGH PRESSURE BUILDS
ACROSS THE WESTERN GREAT LAKES. HIGH PRESSURE WILL PREVAIL ACROSS
THE GREAT LAKES REGION THROUGH THE REST OF THE WEEK.

LMZ261-362-364-366-563-565-567-868-240330-
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-
237 PM CDT SUN AUG 23 2015

SHEBOYGAN WI TO PENTWATER MI NORTH

.TONIGHT...WEST WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS THIS
EVENING...THEN CHANCE OF SHOWERS OVERNIGHT. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT.
.MONDAY...WEST WINDS TO 30 KT. SCATTERED SHOWERS WITH A CHANCE OF
THUNDERSTORMS. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.MONDAY NIGHT...WEST WINDS TO 30 KT BECOMING NORTHWEST 15 TO
25 KT. SCATTERED SHOWERS WITH A CHANCE OF THUNDERSTORMS. WAVES
SUBSIDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KT. SCATTERED SHOWERS. WAVES
SUBSIDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. SCATTERED SHOWERS.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH 10 TO
20 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. CHANCE OF SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
SUBSIDING TO 1 TO 3 FT.
.THURSDAY...NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES
2 TO 4 FT.
.FRIDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240330-
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-
237 PM CDT SUN AUG 23 2015

SHEBOYGAN WI TO PENTWATER MI SOUTH

.TONIGHT...WEST WINDS 20 TO 25 KT INCREASING TO 30 KT. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
.MONDAY...WEST WINDS TO 30 KT. A FEW GALE FORCE GUSTS POSSIBLE.
ISOLATED SHOWERS IN THE MORNING...THEN SCATTERED SHOWERS IN THE
AFTERNOON. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.MONDAY NIGHT...NORTHWEST WINDS TO 30 KT. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT.
.TUESDAY...NORTHWEST WINDS TO 30 KT DIMINISHING TO 10 TO 20 KT IN
THE AFTERNOON. WAVES 5 TO 8 FT OCCASIONALLY TO 10 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. WAVES
3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY NIGHT...NORTH WINDS 10 TO 15 KT. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 2 FT.
.THURSDAY...NORTH WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
WAVES 1 TO 3 FT.
.FRIDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT.
WAVES 1 TO 3 FT.

$$

LMZ761-240330-
MAFOR 2321/
MICHIGAN NORTH 11530 15640 11640. CHANCE OF SHOWERS OVERNIGHT.
SCATTERED SHOWERS WITH A CHANCE OF THUNDERSTORMS MONDAY. WAVES 6
TO 9 FT OCCASIONALLY TO 11 FT.

MICHIGAN SOUTH 12630 13640 13640 19650. SCATTERED SHOWERS MONDAY.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT TONIGHT. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT MONDAY.

$$


KREIN



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