Great Lakes Forecast
Issued by NWS

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240
FZUS63 KLOT 270152
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
852 PM CDT FRI MAY 26 2017

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 OF THE HIGHEST 1/3 OF THE WAVE, ALONG WITH THE
AVERAGE HEIGHT OF THE HIGHEST 10% OF THE WAVES WHICH WILL
OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...WEAK LOW PRESSURE OF 29.8 INCHES OVER CENTRAL ILLINOIS
THIS EVENING...WILL MOVE EAST TO THE MID ATLANTIC REGION SATURDAY.
ANOTHER AREA OF LOW PRESSURE OF 29.7 INCHES WILL DEVELOP OVER
OKLAHOMA SATURDAY AND MOVE TO NEAR LAKE HURON SUNDAY AFTERNOON...
AS A SECOND LOW OF 29.4 INCHES OVER MANITOBA MOVES EAST INTO
ONTARIO SATURDAY. THE LOW OVER LAKE HURON AND THE LOW OVER ONTARIO
WILL MERGE SUNDAY NIGHT AND REMAIN NEARLY STATIONARY NEAR JAMES
BAY THROUGH THE MIDDLE OF NEXT WEEK.

LMZ261-362-364-366-563-565-567-868-270800-
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-
852 PM CDT FRI MAY 26 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT SATURDAY...

.REST OF TONIGHT...SOUTHWEST WINDS 5 TO 10 KT BECOMING SOUTH.
SLIGHT CHANCE OF RAIN SHOWERS THIS EVENING. AREAS OF DENSE FOG.
WAVES 1 FT OR LESS.
.SATURDAY...SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
AREAS OF DENSE FOG IN THE MORNING. WAVES 1 TO 2 FT.
.SATURDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST 5 TO
10 KT. CHANCE OF RAIN SHOWERS OVERNIGHT. WAVES 1 TO 2 FT.
.SUNDAY...SOUTHEAST WINDS 10 TO 15 KT VEERING TO WEST. RAIN
SHOWERS LIKELY IN THE MORNING...THEN CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. WAVES 1 FT OR LESS.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS IN
THE EVENING. WAVES 1 TO 2 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS.
WAVES 1 TO 3 FT.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.

$$

LMZ669-671-673-675-870-872-874-876-270800-
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 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-
852 PM CDT FRI MAY 26 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...

...DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT SATURDAY...

.REST OF TONIGHT...NORTHEAST WINDS 5 TO 10 KT. SLIGHT CHANCE OF
SHOWERS THIS EVENING. AREAS OF DENSE FOG. WAVES 1 TO 2 FT.
.SATURDAY...NORTHEAST WINDS 5 TO 10 KT VEERING TO SOUTHEAST 10 TO
15 KT. AREAS OF DENSE FOG IN THE MORNING. WAVES 1 FT OR LESS.
.SATURDAY NIGHT...SOUTHEAST WINDS 5 TO 10 KT BECOMING EAST 10 TO
20 KT. CHANCE OF SHOWERS OVERNIGHT. WAVES 1 FT OR LESS.
.SUNDAY...SOUTHEAST WINDS 10 TO 20 KT VEERING TO WEST 10 TO
15 KT. SHOWERS LIKELY WITH A CHANCE OF THUNDERSTORMS IN THE
MORNING...THEN CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 FT OR
LESS.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 1 TO 2 FT BUILDING
TO 1 TO 3 FT.
.MONDAY...WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES 1 TO
2 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.

$$

LMZ080-777-779-878-270800-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
852 PM CDT FRI MAY 26 2017

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...

.REST OF TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH
10 TO 15 KT. CHANCE OF SHOWERS THIS EVENING. AREAS OF FOG. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.SATURDAY...NORTHEAST WINDS 5 TO 10 KT BECOMING VARIABLE...AND
THEN BECOMING EAST LATE IN THE AFTERNOON. AREAS OF FOG IN THE
MORNING. WAVES 1 TO 2 FT.
.SATURDAY NIGHT...EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT
LATE IN THE EVENING...THEN BECOMING SOUTHEAST 10 TO 20 KT LATE.
SHOWERS LIKELY OVERNIGHT. WAVES 1 FT OR LESS.
.SUNDAY...SOUTH WINDS 10 TO 20 KT BECOMING WEST 10 TO 15 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING... THEN CHANCE
OF SHOWERS IN THE AFTERNOON. WAVES 1 FT OR LESS.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST. CHANCE OF
SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.TUESDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES 1 TO
3 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. WAVES
1 TO 2 FT.

$$
LMZ761-270800-
MAFOR 2703/
MICHIGAN NORTH 11504 13404 11414 13410. WAVES 1 FT OR LESS
TONIGHT AND 1 TO 2 FT SATURDAY.

MICHIGAN SOUTH 11124 11114 11814 12104 11900 12200 19310. WAVES
2 TO 4 FT SUBSIDING TO 1 TO 3 FT TONIGHT.

$$

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:
WEATHER.GOV/GREATLAKES



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