Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 200153
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
853 PM CDT FRI AUG 19 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 TROUGH OF LOW PRESSURE AVERAGING 29.8 INCHES
EXTENDING FROM NORTHERN LAKE MICHIGAN TO CENTRAL IOWA WILL MOVE
SLOWLY EAST OVERNIGHT. LOW PRESSURE OF 29.6 INCHES WILL DEVELOP
ALONG THIS TROUGH OVER SOUTHERN WISCONSIN BY LATE MORNING AND
DEEPEN TO 29.3 INCHES AS IT MOVES TO FAR NORTHERN LAKE MICHIGAN
BY SATURDAY EVENING. A FAIRLY STOUT COLD FRONT BEHIND THE LOW
WILL PUSH ACROSS THE LAKE SATURDAY NIGHT. HIGH PRESSURE OF 30.1
WILL SET UP ACROSS THE LOWER GREAT LAKES EARLY NEXT WEEK.

LMZ261-362-364-563-200930-
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI-
853 PM CDT FRI AUG 19 2016

STURGEON BAY WI TO POINT BETSIE MI NORTH...

...GALE WATCH IN EFFECT FROM SATURDAY EVENING THROUGH SUNDAY
MORNING...

.REST OF TONIGHT...SOUTHWEST WINDS 10 TO 15 KT VEERING TO
NORTHEAST AFTER MIDNIGHT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.SATURDAY...EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT
EARLY IN THE AFTERNOON AND THEN BECOMING SOUTHEAST 15 TO 25 KT
LATE. SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT BUILDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.SATURDAY NIGHT...SOUTHWEST WINDS TO 30 KT BECOMING NORTHWEST
GALES TO 35 KT BY LATE EVENING. SHOWERS LIKELY IN THE
EVENING...THEN CHANCE OF SHOWERS OVERNIGHT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.SUNDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 5 TO
8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT.
.SUNDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
15 KT OVERNIGHT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT.
WAVES 1 TO 3 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY...SOUTHWEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.

$$

LMZ366-565-567-868-200930-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
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-
853 PM CDT FRI AUG 19 2016

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

.REST OF TONIGHT...SOUTHWEST WINDS 10 TO 15 KT BECOMING SOUTH 5
TO 10 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 3 FT.
.SATURDAY...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 20 KT
LATE IN THE MORNING...THEN INCREASING TO 30 KT LATE. SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT BUILDING TO 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.SATURDAY NIGHT...WEST WINDS TO 30 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING...THEN CHANCE OF SHOWERS OVERNIGHT.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT.
.SUNDAY...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT.
WAVES 1 TO 2 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-200930-
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-
853 PM CDT FRI AUG 19 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.SATURDAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT LATE
IN THE MORNING...THEN BECOMING SOUTHWEST TO 30 KT IN THE AFTERNOON.
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SATURDAY NIGHT...WEST WINDS TO 30 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.
.SUNDAY...WEST WINDS TO 30 KT BECOMING NORTHWEST 15 TO 25 KT.
CHANCE OF SHOWERS IN THE MORNING. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
3 FT.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES
2 TO 4 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.

$$
LMZ761-200930-
MAFOR 2003/
MICHIGAN NORTH 11510 11710 11110 12219 11229 11339 11446.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT TONIGHT AND EARLY SATURDAY
MORNING. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT THROUGH
THE DAY SATURDAY...FURTHER BUILDING TO 4 TO 6 FT OCCASIONALLY TO
8 FT SATURDAY EVENING.

MICHIGAN SOUTH 13420 11429 11439 12549 11640. CHANCE OF SHOWERS
AND THUNDERSTORMS TONIGHT AND SATURDAY EVENING. WAVES 2 TO 4 FT
SUBSIDING TO 1 TO 3 FT TONIGHT AND EARLY SATURDAY MORNING. WAVES
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT THROUGH THE DAY
SATURDAY.

$$

MTF



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