Great Lakes Forecast
Issued by NWS

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901
FZUS63 KLOT 270756
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
256 AM CDT SAT MAY 27 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
INDIANA THIS MORNING WILL CONTINUE TO MOVE EAST TO THE MID
ATLANTIC REGION TODAY. ANOTHER LOW OF 29.7 INCHES WILL DEVELOP
OVER OKLAHOMA THIS AFTERNOON...AND WILL MOVE NORTHEAST ACROSS
ILLINOIS BY EARLY SUNDAY AND TO NEAR LAKE HURON BY SUNDAY
EVENING. THIS LOW WILL MERGE WITH ANOTHER LOW OF 29.4 INCHES OVER
ONTARIO SUNDAY NIGHT...AND WILL REMAIN NEARLY STATIONARY NEAR
JAMES BAY INTO THE MIDDLE OF NEXT WEEK.

LMZ261-362-364-366-563-565-567-868-271515-
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-
256 AM CDT SAT MAY 27 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...SOUTH WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT. PATCHY
DENSE FOG THIS MORNING. WAVES 1 TO 2 FT.
.TONIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST 5 TO 10 KT.
SLIGHT CHANCE OF RAIN SHOWERS IN THE EVENING...THEN CHANCE OF
RAIN SHOWERS OVERNIGHT. WAVES 1 TO 2 FT.
.SUNDAY...SOUTHEAST WINDS 5 TO 10 KT BACKING TO NORTH 10 TO
15 KT. RAIN SHOWERS LIKELY. 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 BUILDING TO 1 TO 3 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 15 TO 25 KT INCREASING TO 30 KT.
WAVES 2 TO 4 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. WAVES 2 TO
4 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-271515-
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-
256 AM CDT SAT MAY 27 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...NORTH WINDS 10 TO 15 KT BECOMING EAST. PATCHY DENSE FOG
THIS MORNING. WAVES 1 TO 2 FT.
.TONIGHT...EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 20 KT.
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS OVERNIGHT.
WAVES 1 TO 2 FT.
.SUNDAY...EAST WINDS 10 TO 15 KT BACKING TO NORTHWEST 10 TO
20 KT. SHOWERS LIKELY IN THE MORNING...THEN CHANCE OF SHOWERS IN
THE AFTERNOON. WAVES 1 TO 2 FT.
.SUNDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 1 TO 2 FT BUILDING
TO 1 TO 3 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST 15 TO 25 KT.
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 2 TO 4 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 1 TO 3 FT.

$$

LMZ761-271515-
MAFOR 2709/
MICHIGAN NORTH 12400 19404 11410 19414 11510 13410 11300. CHANCE
OF SHOWERS LATE THIS EVENING. WAVES 1 FOOT OR LESS.

MICHIGAN SOUTH 12810 19814 11800 19804 11810 11210 11200 12310.
CHANCE OF SHOWERS LATE THIS EVENING. WAVES 1 TO 3 FT.

$$

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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