Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 200755
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
255 AM CDT SAT AUG 20 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...AN AREA OF LOW PRESSURE AVERAGING 29.8 INCHES
CENTERED OVER THE CENTRAL PLAINS WILL LIFT NORTHEAST TOWARDS
NORTHEAST WISCONSIN THIS AFTERNOON AND DEEPEN TO 29.6 INCHES AS IT
CROSSES NORTHERN LAKE MICHIGAN. A STRONG COLD FRONT WILL SWEEP
ACROSS LAKE MICHIGAN WITH HIGH PRESSURE THEN BUILDING IN FROM THE
WEST AVERAGING 30.1 INCHES AND BECOMING CENTERED OVER THE UPPER
MIDWEST AND PLAINS SUNDAY MORNING.

LMZ261-362-364-563-201530-
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-
255 AM CDT SAT AUG 20 2016

STURGEON BAY WI TO POINT BETSIE MI NORTH...

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH SUNDAY
MORNING...

.TODAY...EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 20 KT LATE
THIS MORNING...THEN BECOMING SOUTH TO 30 KT EARLY THIS AFTERNOON.
SHOWERS WITH ISOLATED THUNDERSTORMS THIS MORNING...THEN SHOWERS
AND SCATTERED THUNDERSTORMS THIS AFTERNOON. WAVES 1 TO 3 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TONIGHT...SOUTHWEST WINDS TO 30 KT BECOMING WEST GALES TO 35 KT.
SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE EVENING...
THEN CHANCE OF SHOWERS OVERNIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO
9 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT.
.SUNDAY...NORTHWEST GALES TO 40 KT DIMINISHING TO 30 KT. CHANCE
OF SHOWERS. WAVES 6 TO 9 FT OCCASIONALLY TO 11 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 SUBSIDING TO 2 TO 4 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 15 TO 25 KT
IN THE AFTERNOON. WAVES 1 TO 3 FT.
.MONDAY NIGHT...SOUTHWEST WINDS TO 30 KT. WAVES BUILDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...SOUTHWEST WINDS TO 30 KT. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.WEDNESDAY...SOUTH WINDS TO 30 KT BECOMING SOUTHWEST. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.

$$

LMZ366-565-567-868-201530-
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-
255 AM CDT SAT AUG 20 2016

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

.TODAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT LATE
THIS MORNING...THEN INCREASING TO 30 KT EARLY THIS AFTERNOON
BECOMING SOUTHWEST LATE. SHOWERS AND SCATTERED THUNDERSTORMS.
WAVES 1 TO 3 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...SOUTHWEST WINDS TO 30 KT BECOMING WEST. OCCASIONAL GALE
FORCE GUSTS TO 35 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 10 TO 20 KT.
OCCASIONAL GALE FORCE GUSTS TO 35 KT IN THE MORNING. CHANCE OF
SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5
FT OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT.
.MONDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO 20 KT IN
THE AFTERNOON. WAVES 1 TO 3 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING SOUTH. WAVES 4 TO
6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY...SOUTH WINDS TO 30 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-201530-
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-
255 AM CDT SAT AUG 20 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST TO 30 KT.
SCATTERED THUNDERSTORMS WITH A CHANCE OF SHOWERS THIS MORNING...
THEN SHOWERS AND SCATTERED THUNDERSTORMS THIS AFTERNOON. WAVES
2 TO 4 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TONIGHT...WEST WINDS TO 30 KT. OCCASIONAL GALE FORCE GUSTS TO 35
KT. CHANCE OF SHOWERS IN THE EVENING...THEN SLIGHT CHANCE OF
SHOWERS OVERNIGHT. 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 10 TO 20 KT.
OCCASIONAL GALE FORCE GUSTS TO 35 KT EARLY IN THE MORNING. 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. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO 20 KT.
WAVES 1 TO 3 FT.
.MONDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO
25 KT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTH WINDS 10 TO 20 KT. 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.

$$

LMZ761-201530-
MAFOR 2009/
MICHIGAN NORTH...GALE WARNING IN EFFECT...
11500 11326 11336 11446 11446 11556 12650. CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY THIS MORNING. CHANCE OF THUNDERSTORMS
EARLY THIS EVENING...THEN CHANCE OF SHOWERS LATE THIS EVENING.
WAVES 2 TO 4 FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT TODAY.
WAVES BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT TONIGHT.

MICHIGAN SOUTH 12430 12446 11546 12640 11640. CHANCE OF SHOWERS
AND THUNDERSTORMS. CHANCE OF SHOWERS LATE TONIGHT. WAVES 2 TO 4
FT BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT TODAY. WAVES 4 TO 7
FT OCCASIONALLY TO 9 FT BUILDING TO 5 TO 8 FT OCCASIONALLY TO 10
FT TONIGHT.

$$


BEACHLER



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