Great Lakes Forecast
Issued by NWS

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823
FZUS63 KLOT 231351
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
851 AM CDT SAT JUL 23 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 30.0 INCHES WILL REMAIN OVER THE LAKE
TODAY BEFORE SHIFTING EAST THIS EVENING. MEANWHILE A LOW OF 29.5
INCHES OVER THE SOUTHERN CANADIAN PRAIRIES THIS AFTERNOON WILL
MOVE ACROSS NORTHERN ONTARIO ON SUNDAY AND TO JAMES BAY BY MONDAY
MORNING. A TRAILING COLD FRONT WILL PUSH ACROSS LAKE MICHIGAN
SUNDAY NIGHT. HIGH PRESSURE OF 30.1 INCHES WILL MOVE FROM THE
WESTERN GREAT LAKES ON MONDAY NIGHT TO THE EASTERN LAKES BY
WEDNESDAY.

LMZ261-362-364-366-563-565-567-868-232130-
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-
851 AM CDT SAT JUL 23 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...NORTHEAST WINDS 5 TO 10 KT BECOMING EAST BY LATE
AFTERNOON. WAVES 1 FT OR LESS.
.TONIGHT...EAST WINDS 5 TO 10 KT VEERING TO SOUTH AND INCREASING
TO 10 TO 20 KT OVERNIGHT. SCATTERED SHOWERS AND THUNDERSTORMS IN
THE EVENING...THEN NUMEROUS SHOWERS AND THUNDERSTORMS OVERNIGHT.
WAVES BUILDING TO 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST BY EARLY
AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...WEST WINDS 10 TO 15 KT. WAVES 2 TO 4 FT SUBSIDING
TO 1 TO 3 FT.
.MONDAY...WEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.MONDAY NIGHT...WEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.TUESDAY...SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 TO 2 FT.
.WEDNESDAY...WEST WINDS 5 TO 10 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 FT OR LESS.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-232130-
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-
851 AM CDT SAT JUL 23 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...VARIABLE WINDS LESS THAN 10 KT BECOMING EAST BY
LATE AFTERNOON. PATCHY FOG THIS MORNING. ISOLATED SHOWERS AND
THUNDERSTORMS THIS AFTERNOON. WAVES 1 FT OR LESS.
.TONIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 15 KT
AFTER MIDNIGHT...THEN INCREASING TO 10 TO 20 KT LATE. SCATTERED
SHOWERS AND THUNDERSTORMS IN THE EVENING THEN NUMEROUS SHOWERS AND
THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
.SUNDAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST 10 TO 20 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES
1 TO 3 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.
.MONDAY NIGHT...WEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.TUESDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 FT OR
LESS.
.WEDNESDAY...SOUTHWEST WINDS 5 TO 10 KT BACKING TO SOUTHEAST.
WAVES 1 TO 2 FT.

$$
LMZ761-232130-
MAFOR 2315/
MICHIGAN NORTH 12100 19900 12200 11300 11419 11429 11430. SCATTERED
SHOWERS AND THUNDERSTORMS THIS EVENING WITH A CHANCE OF SHOWERS
AND THUNDERSTORMS SUNDAY MORNING. WAVES 1 FT OR LESS TODAY
BUILDING TO 1 TO 3 FT TONIGHT AND TO 3 TO 5 FT OCCASIONALLY TO 7
FT SUNDAY MORNING.

MICHIGAN SOUTH 12900 11200 12300 11419 11429 11430. PATCHY FOG
THIS MORNING. ISOLATED SHOWERS AND THUNDERSTORMS THIS AFTERNOON. A
CHANCE OF SHOWERS AND THUNDERSTORMS SUNDAY MORNING. WAVES 1 FT OR
LESS TODAY BUILDING TO 1 TO 3 FT TONIGHT...AND TO 2 TO 4 FT SUNDAY
MORNING.

$$

MTF



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