Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 251952
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
252 PM CDT SAT MAR 25 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 29.7 INCHES OVER MISSOURI WILL SLOWLY
MOVE NORTHEAST AND REACH THE MID MISSISSIPPI VALLEY THIS
EVENING. THIS LOW WILL THEN CONTINUE SLOWLY INTO NORTHERN
ILLINOIS ON SUNDAY AND CENTRAL LAKE MICHIGAN SUNDAY NIGHT. A
SECOND AREA OF LOW PRESSURE OF 29.6 INCHES IS EXPECTED TO DEVELOP
OVER THE SOUTH PLAINS SUNDAY NIGHT AND TRACK EAST TO THE MIDDLE
MISSISSIPPI VALLEY MONDAY AFTERNOON...THEN REACH THE OHIO VALLEY
MONDAY NIGHT INTO TUESDAY. HIGH PRESSURE AVERAGING 30.3 INCHES
WILL BUILD ACROSS THE GREAT LAKES REGION TUESDAY AND WEDNESDAY
WHILE LOW PRESSURE OF 29.8 INCHES TRACKS THROUGH THE MIDDLE
MISSISSIPPI AND OHIO VALLEYS.

LMZ261-362-364-366-563-565-567-868-260330-
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-
252 PM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...EAST WINDS TO 30 KT. PERIODS OF RAIN SHOWERS. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY...EAST WINDS TO 30 KT BECOMING SOUTHEAST 15 TO 25 KT.
RAIN AND SNOW SHOWERS IN THE MORNING...THEN RAIN AND SNOW LIKELY
IN THE AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7
FT.
.SUNDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT BACKING TO NORTHWEST.
RAIN LIKELY IN THE EVENING...THEN CHANCE OF RAIN OVERNIGHT. WAVES
2 TO 4 FT.
.MONDAY...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH. WAVES 1 TO
3 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 1 TO 3 FT.
.TUESDAY...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 2 TO 4 FT.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST.
WAVES 2 TO 4 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.THURSDAY...EAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-260330-
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-
252 PM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...EAST WINDS TO 30 KT. AREAS OF FOG. PERIODS OF RAIN
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SUNDAY...SOUTHEAST WINDS 15 TO 25 KT BECOMING SOUTH 10 TO 20 KT.
PATCHY FOG. RAIN SHOWERS LIKELY WITH SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING...THEN RAIN LIKELY WITH POCKETS OF
RAIN SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT VEERING TO NORTHWEST
10 TO 15 KT. PATCHY FOG IN THE EVENING. CHANCE OF RAIN IN THE
EVENING. WAVES 1 TO 3 FT.
.MONDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH 10 TO 20 KT.
CHANCE OF RAIN IN THE AFTERNOON. WAVES 1 TO 2 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. CHANCE OF RAIN IN THE EVENING. WAVES 1 TO 3 FT BUILDING TO
2 TO 4 FT.
.TUESDAY...NORTH WINDS 15 TO 25 KT. WAVES 2 TO 4 FT.
.TUESDAY NIGHT...NORTH WINDS 15 TO 25 KT BECOMING NORTHEAST.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...EAST WINDS 15 TO 25 KT DIMINISHING TO 10 TO 20 KT.
CHANCE OF RAIN. WAVES 2 TO 4 FT.

$$

LMZ761-260330-
MAFOR 2521/
MICHIGAN NORTH 11140 14246 11246 11247 12337. SCATTERED RAIN
SHOWERS EARLY THIS EVENING. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
TONIGHT...SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT SUNDAY
AFTERNOON.

MICHIGAN SOUTH 14246 11246 12336 11436. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT TONIGHT...SUBSIDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT SUNDAY AFTERNOON.

$$

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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