Great Lakes Forecast
Issued by NWS

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136
FZUS63 KLOT 212002
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
302 PM 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 30.2 INCHES OVER THE MID ATLANTIC
COAST THIS MORNING WILL MOVE SLOWLY OFFSHORE TONIGHT 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 WEAK COLD FRONT MOVES ACROSS LAKE MICHIGAN. ANOTHER
LOW OF 29.5 INCHES OVER THE NORTHERN PLAINS AND CANADIAN PRAIRIES
SATURDAY WILL LIFT ACROSS THE UPPER MISSISSIPPI VALLEY TO THE
WESTERN GREAT LAKES 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.

LMZ261-362-364-366-563-565-567-868-220330-
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-
302 PM CDT THU JUL 21 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...SOUTHWEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT
LATE THIS EVENING...THEN BECOMING WEST AFTER MIDNIGHT AND THEN
DIMINISHING TO 10 TO 15 KT DURING THE EARLY MORNING HOURS. CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9
FT SUBSIDING TO 2 TO 4 FT.
.FRIDAY...WEST WINDS SUBSIDING TO 5 TO 10 KT. WAVES 1 TO 3 FT.
.FRIDAY NIGHT...WEST WINDS 5 TO 10 KT VEERING TO NORTH. WAVES
1 TO 2 FT.
.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.
.SUNDAY NIGHT...WEST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 3 FT.
.MONDAY...WEST WINDS 10 TO 15 KT BECOMING NORTHWEST. WAVES 1 TO
2 FT.
.TUESDAY...NORTH WINDS 5 TO 10 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220330-
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-
302 PM CDT THU JUL 21 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 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...THEN SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 1 TO
2 FT.
.FRIDAY NIGHT...NORTHWEST WINDS 5 TO 10 KT BECOMING NORTH LATE IN
THE EVENING...THEN BECOMING NORTHWEST AFTER MIDNIGHT BECOMING
NORTH LATE. 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.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE
OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.
.TUESDAY...NORTH WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ761-220330-
MAFOR 2121/
MICHIGAN NORTH 12530 11520 11620 11610 13600. CHANCE OF SHOWERS
AND THUNDERSTORMS TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
SUBSIDING TO 2 TO 4 FT TONIGHT. WAVES 1 TO 3 FT FRIDAY.

MICHIGAN SOUTH 11420 11520 13510 11610 12600. CHANCE OF SHOWERS
AND THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING
TO 2 TO 4 FT TONIGHT. WAVES 1 TO 2 FT FRIDAY.

$$



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