Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 211443
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
943 AM CDT THU JUL 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...HIGH PRESSURE OF 30.3 INCHES OVER THE MID ATLANTIC
COAST THIS MORNING WILL MOVE SLOWLY EAST TODAY WHILE LOW PRESSURE
OF 29.5 INCHES OVER HUDSON BAY MOVES SLOWLY SOUTHEAST. THE LOW
WILL MOVE TO THE CANADIAN MARITIME PROVINCES FRIDAY WHILE A
TRAILING COLD FRONT MOVES ACROSS LAKE MICHIGAN. ANOTHER LOW OF
29.7 INCHES OVER THE NORTHERN PLAINS AND CANADIAN PRAIRIES
SATURDAY WILL LIFT ACROSS SUNDAY AND SUNDAY NIGHT WHILE ANOTHER
COLD FRONT PUSHES ACROSS LAKE MICHIGAN. HIGH PRESSURE OF 30.1
INCHES WILL BUILD OVER THE WESTERN GREAT LAKES TUESDAY AND EASTERN
LAKES WEDNESDAY.

LMZ362-364-366-669-671-673-868-870-872-874-212115-
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 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 PENTWATER TO MANISTEE MI 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-
943 AM CDT THU JUL 21 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WIND POINT WI TO HOLLAND
MI...

...SEVERE THUNDERSTORM WATCH 404 IN EFFECT UNTIL 11 AM CDT THIS
MORNING...

...SEVERE THUNDERSTORM WATCH 405 IN EFFECT UNTIL 4 PM CDT THIS
AFTERNOON...

.REST OF TODAY...SOUTHWEST WINDS 20 TO 25 KT INCREASING TO 30 KT.
AREAS OF FOG THIS MORNING. SHOWERS AND THUNDERSTORMS THROUGH
EARLY AFTERNOON THEN A CHANCE OF SHOWERS AND THUNDERSTORMS. SOME
OF THE THUNDERSTORMS MAY BE SEVERE WITH GUSTY WINDS. WAVES 4 TO 7
FT OCCASIONALLY TO 9 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO 15 KT
LATE. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
.FRIDAY...WEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.FRIDAY NIGHT...WEST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 FT
OR LESS.
.SATURDAY...NORTH WINDS LESS THAN 10 KT BECOMING NORTHEAST. WAVES
1 FT OR LESS.
.SATURDAY NIGHT...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.SUNDAY...SOUTH WINDS 10 TO 20 KT. SHOWERS LIKELY WITH A CHANCE
OF THUNDERSTORMS. WAVES 1 TO 3 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 1 TO
2 FT.

$$

LMZ261-563-565-567-212115-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 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-
943 AM CDT THU JUL 21 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

...SEVERE THUNDERSTORM WATCH 404 IN EFFECT UNTIL 11 AM CDT THIS
MORNING...

.REST OF TODAY...SOUTHWEST WINDS 20 TO 25 KT INCREASING TO 30 KT.
AREAS OF FOG THIS MORNING. SHOWERS AND THUNDERSTORMS THROUGH
EARLY AFTERNOON THEN A CHANCE OF SHOWERS AND THUNDERSTORMS. SOME
OF THE THUNDERSTORMS MAY BE SEVERE WITH GUSTY WINDS. WAVES 4 TO 7
FT OCCASIONALLY TO 9 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 10 TO 15 KT
LATE. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.
.FRIDAY...WEST WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.
.FRIDAY NIGHT...WEST WINDS 5 TO 10 KT BECOMING NORTH. WAVES 1 FT
OR LESS.
.SATURDAY...NORTH WINDS LESS THAN 10 KT BECOMING NORTHEAST. WAVES
1 FT OR LESS.
.SATURDAY NIGHT...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.SUNDAY...SOUTH WINDS 10 TO 20 KT. SHOWERS LIKELY WITH A CHANCE
OF THUNDERSTORMS. WAVES 1 TO 3 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 1 TO
2 FT.

$$

LMZ080-675-777-779-876-878-212115-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
943 AM CDT THU JUL 21 2016

WIND POINT WI TO HOLLAND MI SOUTH...

.REST OF TODAY...SOUTH WINDS 10 TO 20 KT. SHOWERS AND
THUNDERSTORMS LIKELY LATE THIS MORNING AND EARLY AFTERNOON...THEN
A CHANCE OF SHOWERS AND THUNDERSTORMS. SOME OF THE THUNDERSTORMS
MAY BE SEVERE WITH GUSTY WINDS. WAVES 2 TO 4 FT.
.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT
LATE. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.FRIDAY...WEST WINDS 10 TO 15 KT DIMINISHING TO 5 TO 10 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING. WAVES 1 TO
3 FT.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 10 KT BECOMING NORTH. WAVES
1 FT OR LESS.
.SATURDAY...NORTHEAST WINDS LESS THAN 10 KT BECOMING NORTH. WAVES
1 FT OR LESS.
.SATURDAY NIGHT...EAST WINDS 5 TO 10 KT VEERING TO SOUTHEAST.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.SUNDAY...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.

$$
LMZ761-212115-
MAFOR 2115/
MICHIGAN NORTH...SEVERE THUNDERSTORM WATCH IN EFFECT...11539
12543 11530 11520 11620 11610 11600. CHANCE OF SHOWERS AND
THUNDERSTORMS TODAY AND TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT TODAY. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 2 TO 4 FT TONIGHT. WAVES 1
TO 3 FT FRIDAY MORNING.

MICHIGAN SOUTH...12530 11420 11520 13510 11610. CHANCE OF SHOWERS
AND THUNDERSTORMS TODAY...TONIGHT...AND FRIDAY MORNING. WAVES 2 TO
4 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT TODAY. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT TONIGHT. WAVES 1
TO 3 FT FRIDAY MORNING.

$$


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