Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 261340
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
840 AM CDT FRI AUG 26 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 30.1 INCHES WILL SPREAD ACROSS THE
WESTERN LAKES REGION THROUGH THIS AFTERNOON AND THEN MOVE SLOWLY
EAST TO NEW ENGLAND SATURDAY. DEVELOPING LOW PRESSURE OVER THE
NORTHERN CANADIAN ROCKIES WILL WILL MOVE TO NORTH CENTRAL CANADA
INTO SUNDAY AT 29.6 INCHES. HIGH PRESSURE OF 30.2 INCHES WILL
THEN SPREAD ACROSS THE GREAT LAKES EARLY NEXT WEEK AS THE CANADIAN
LOW CONTINUES EAST TO NORTHEAST QUEBEC WEDNESDAY. THIS LOW WILL
SEND A COLD FRONT ACROSS THE NORTHERN HALF OF THE LAKE MID WEEK.
MODEST HIGH PRESSURE OF 30.3 INCHES WILL BUILD ACROSS ONTARIO EAST
OF JAMES BAY LATE IN THE WEEK.

LMZ261-362-364-366-563-565-567-868-262130-
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-
840 AM CDT FRI AUG 26 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 5 TO 10
KT BY MID AFTERNOON. WAVES 1 TO 3 FT.
.TONIGHT...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHEAST BY MIDNIGHT.
WAVES 1 TO 2 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 15 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING...THEN SHOWERS AND THUNDERSTORMS
LIKELY IN THE AFTERNOON. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST.
SHOWERS AND THUNDERSTORMS LIKELY IN THE EVENING...THEN CHANCE OF
SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 2 TO 4 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
2 FT.
.SUNDAY NIGHT...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES
1 FT OR LESS.
.MONDAY...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST IN THE
AFTERNOON. WAVES 1 TO 2 FT.
.TUESDAY...WEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-262130-
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-
840 AM CDT FRI AUG 26 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...NORTHWEST WINDS 10 TO 15 KT BECOMING VARIABLE 5
TO 10 KT THIS AFTERNOON. WAVES 1 TO 3 FT.
.TONIGHT...VARIABLE WINDS 5 TO 10 KT BECOMING EAST 10 TO 15 KT
LATE THIS EVENING...AND THEN SOUTHEAST LATE. SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 1 TO 2 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH 10 TO
15 KT IN THE AFTERNOON. CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE MORNING... THEN SHOWERS AND THUNDERSTORMS LIKELY IN THE
AFTERNOON. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST.
SHOWERS AND THUNDERSTORMS LIKELY IN THE EVENING...THEN CHANCE OF
SHOWERS AND THUNDERSTORMS OVERNIGHT. WAVES 1 TO 3 FT.
.SUNDAY...WEST WINDS 5 TO 10 KT BACKING TO EAST. WAVES 1 TO 2 FT.
.SUNDAY NIGHT...EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST. WAVES
1 FT OR LESS.
.MONDAY...SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH. WAVES 1 FT
OR LESS.
.TUESDAY...WEST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.

$$
LMZ761-262130-
MAFOR 2615/
MICHIGAN NORTH 12610 11500 12400 12300 11310. CHANCE OF SHOWERS
AND THUNDERSTORMS SATURDAY MORNING. WAVES 1 TO 3 FT.

MICHIGAN SOUTH 11710 13900 12210 11310 11320. CHANCE OF SHOWERS
AND THUNDERSTORMS SATURDAY MORNING. WAVES 1 TO 3 FT.

$$

MTF

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE (ALL LOWER CASE)

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)



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