Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 250149
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
849 PM CDT WED MAY 24 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...LOW PRESSURE OF 29.3 INCHES IN WESTERN OHIO WILL
SLOWLY MOVE TO THE EASTERN LAKES BY THURSDAY EVENING AND THEN
ACCELERATE OFF THE SHORE OF NEW ENGLAND BY FRIDAY MORNING. A WEAK
RIDGE OF HIGH PRESSURE AVERAGING 29.9 INCHES WILL THEN TRACK
ACROSS THE LAKE ON FRIDAY AND SATURDAY. ANOTHER LOW AVERAGING 29.6
INCHES WILL DEVELOP OVER ONTARIO ON SATURDAY AND MOVES SLOWLY
TOWARD JAMES BAY BY MONDAY AFTERNOON.

LMZ261-362-364-366-563-565-567-868-250930-
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-
849 PM CDT WED MAY 24 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...NORTHEAST WINDS 15 TO 25 KT BECOMING NORTH LATE.
CHANCE OF RAIN SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST 10 TO
20 KT LATE IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS. WAVES 3 TO
5 FT OCCASIONALLY TO 7 FT.
.THURSDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH LATE
IN THE EVENING...THEN DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT.
WAVES SUBSIDING TO 1 TO 3 FT.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.SATURDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.SUNDAY...SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
CHANCE OF RAIN SHOWERS. WAVES 1 TO 2 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST 10 TO 20 KT.
CHANCE OF RAIN SHOWERS. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250930-
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-
849 PM CDT WED MAY 24 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...NORTH WINDS 20 TO 25 KT WITH A FEW GUSTS TO 30
KT. CHANCE OF SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY...NORTH WINDS 20 TO 25 KT WITH A FEW MORNING GUSTS TO 30
KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY NIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10
TO 15 KT AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FT.
.FRIDAY...EAST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT. WAVES
1 TO 3 FT.
.FRIDAY NIGHT...EAST WINDS 10 TO 15 KT BACKING TO NORTH 5 TO
10 KT. CHANCE OF SHOWERS IN THE EVENING. WAVES 1 TO 3 FT.
.SATURDAY...WEST WINDS 5 TO 10 KT BACKING TO SOUTH 10 TO 15 KT.
WAVES 1 FT OR LESS.
.SATURDAY NIGHT...NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 1 TO 2 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES
1 TO 2 FT.
.MONDAY...WEST WINDS 10 TO 20 KT. CHANCE OF SHOWERS. WAVES 2 TO
4 FT.

$$
LMZ761-250930-
MAFOR 2503/
MICHIGAN NORTH 12130 14830 11120 11110. CHANCE OF RAIN SHOWERS
TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT THROUGH
THURSDAY...SUBSIDING TO 2 TO 4 FT EARLY THURSDAY EVENING.

MICHIGAN SOUTH 14830 19840 11830 19840 12830 11820. CHANCE OF
SHOWERS TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT THROUGH
THURSDAY...SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT THURSDAY
EVENING.

$$

MTF

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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