Great Lakes Forecast
Issued by NWS

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912
FZUS63 KLOT 240807
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
307 AM 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...A WEAK LOW AROUND 29.6 INCHES OVER INDIANA WILL
MEANDER OVER THE SOUTHERN GREAT LAKES THROUGH MID WEEK WHILE
SLOWLY DEEPENING TO AROUND 29.4 INCHES. WEAK HIGH PRESSURE RIDGING
AROUND 29.9 INCHES WILL MOVE OVER THE GREAT LAKES ON FRIDAY INTO
SATURDAY.

LMZ261-362-364-366-563-565-567-868-241530-
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-
307 AM CDT WED MAY 24 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...NORTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS THIS MORNING...THEN SLIGHT CHANCE OF RAIN
SHOWERS THIS AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...NORTHEAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. SLIGHT CHANCE OF SHOWERS IN THE EVENING...THEN CHANCE OF
SHOWERS OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. WAVES
2 TO 4 FT.
.THURSDAY NIGHT...NORTH WINDS 10 TO 15 KT BECOMING NORTHWEST 5 TO
10 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
.FRIDAY...SOUTHWEST WINDS 5 TO 10 KT. WAVES 1 FT OR LESS.
.FRIDAY NIGHT...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST. WAVES
1 FT OR LESS.
.SATURDAY...SOUTHWEST WINDS 5 TO 10 KT INCREASING TO 10 TO 15 KT.
WAVES 1 FT OR LESS.
.SUNDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH. CHANCE OF
SHOWERS. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241530-
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-
307 AM CDT WED MAY 24 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...

.TODAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH TO 30 KT.
AREAS OF DENSE FOG THIS MORNING. CHANCE OF RAIN SHOWERS. WAVES 2
TO 4 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...NORTH WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT DIMINISHING TO
10 TO 15 KT. WAVES 2 TO 4 FT.
.FRIDAY...SOUTH WINDS 5 TO 10 KT BECOMING SOUTHEAST 10 TO 15 KT.
WAVES 1 TO 2 FT.
.FRIDAY NIGHT...EAST WINDS 10 TO 15 KT BACKING TO NORTH. WAVES
1 FT OR LESS.
.SATURDAY...NORTH WINDS 5 TO 10 KT BACKING TO SOUTH 10 TO 15 KT.
WAVES 1 TO 2 FT.
.SUNDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING WEST. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 1 TO 3 FT.

$$

LMZ761-241530-
MAFOR 2409/
MICHIGAN NORTH 13120 14130 11130. SCATTERED SHOWERS EARLY THIS
MORNING,...THEN CHANCE OF SHOWERS EARLY THIS MORNING. CHANCE OF
SHOWERS LATE THIS EVENING. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
TONIGHT.

MICHIGAN SOUTH 12124 11820 11830 11840 12830 11820. CHANCE OF
SHOWERS EARLY THIS MORNING AND TONIGHT. WAVES 2 TO 4 FT BUILDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
TONIGHT.

$$


RODRIGUEZ

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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