Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 260138
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
838 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 29.8 INCHES IS OVER THE MID
MISSISSIPPI VALLEY THIS EVENING AND 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.

LMZ261-362-364-366-563-565-567-868-261000-
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-
838 PM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...EAST WINDS TO 30 KT. RAIN SHOWERS AND SLIGHT
CHANCE OF LIGHT FREEZING RAIN THIS EVENING... THEN PERIODS OF RAIN
SHOWERS AND SLIGHT CHANCE OF FREEZING RAIN OVERNIGHT. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
.SUNDAY...EAST WINDS TO 30 KT DIMINISHING TO 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...NORTHEAST 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-261000-
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-
838 PM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...EAST WINDS TO 30 KT. AREAS OF FOG. PERIODS OF
RAIN SHOWERS WITH ISOLATED THUNDERSTORMS THIS EVENING...THEN
PERIODS OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
OVERNIGHT. 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.

$$
LMZ761-261000-
MAFOR 2603/
MICHIGAN NORTH 13246 11247 13237 11126. CHANCE OF LIGHT FREEZING
RAIN LATE THIS EVENING. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT
OVERNIGHT. WAVES SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
SUNDAY. WAVES 2 TO 4 FT SUNDAY EVENING.

MICHIGAN SOUTH 13246 12336 11436 11426 11520. CHANCE OF RAIN
SUNDAY EVENING. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT OVERNIGHT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUNDAY. WAVES 1 TO 3 FT
SUNDAY EVENING.

$$


JEE

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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