Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 251350
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
850 AM 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 THE OZARKS WILL
SLOWLY MOVE NORTHEAST AND REACH THE MID MISSISSIPPI VALLEY THIS
AFTERNOON. 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.

LMZ261-362-364-366-563-565-567-868-252130-
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-
850 AM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...NORTHEAST WINDS TO 30 KT. CHANCE OF RAIN SHOWERS
THROUGH EARLY AFTERNOON AND THEN RAIN LIKELY LATE THIS AFTERNOON.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TONIGHT...EAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT LATE.
RAIN SHOWERS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY...EAST WINDS 15 TO 25 KT BECOMING NORTHEAST 10 TO 20 KT
IN THE AFTERNOON. RAIN SHOWERS IN THE MORNING...THEN RAIN SHOWERS
LIKELY IN THE AFTERNOON. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT
SUBSIDING TO 2 TO 4 FT.
.SUNDAY NIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 10 TO
15 KT. CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.
.MONDAY...NORTH WINDS 10 TO 15 KT. CHANCE OF RAIN SHOWERS AND
LIGHT FREEZING RAIN IN THE MORNING...THEN CHANCE OF RAIN SHOWERS
IN THE AFTERNOON. WAVES 1 TO 3 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.TUESDAY...NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-252130-
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-
850 AM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...NORTHEAST WINDS TO 30 KT BECOMING EAST LATE THIS
AFTERNOON. AREAS OF FOG. RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 6 TO 9 FT OCCASIONALLY TO 11 FT.
.TONIGHT...EAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT AFTER
MIDNIGHT. AREAS OF FOG. RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO
4 TO 7 FT OCCASIONALLY TO 9 FT.
.SUNDAY...EAST WINDS 15 TO 25 KT BECOMING SOUTHEAST 10 TO 15 KT IN
THE AFTERNOON. PATCHY FOG. RAIN SHOWERS LIKELY. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.SUNDAY NIGHT...SOUTHWEST WINDS 10 TO 15 KT BECOMING WEST. PATCHY
FOG IN THE EVENING. CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES
1 TO 3 FT.
.MONDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. WAVES 1 TO
2 FT.
.MONDAY NIGHT...NORTH WINDS 10 TO 20 KT. WAVES 1 TO 3 FT.
.TUESDAY...NORTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$
LMZ761-252130-
MAFOR 2515/
MICHIGAN NORTH 12140 11146 13246 12236. CHANCE OF RAIN SHOWERS
THROUGH EARLY AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
TODAY AND TONIGHT...SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
SUNDAY MORNING.

MICHIGAN SOUTH 12146 13246 13236. AREAS OF FOG. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT TODAY...SUBSIDING TO 5 TO 8 FT OCCASIONALLY
TO 10 FT THIS EVENING...FURTHER SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT OVERNIGHT.

$$

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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