Great Lakes Forecast
Issued by NWS

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874
FZUS63 KLOT 250755
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
255 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 SOUTHERN PLAINS
WILL SLOWLY MOVE EAST AND REACH THE MID MISSISSIPPI VALLEY THIS
AFTERNOON. THIS LOW WILL VERY SLOWLY TRACK NORTHEAST ACROSS
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 HIGH PLAINS SUNDAY MORNING AND TRACK EAST
TO THE MIDDLE MISSISSIPPI VALLEY MONDAY AFTERNOON...THEN REACH THE
OHIO VALLEY MONDAY NIGHT INTO TUESDAY.

LMZ261-362-364-366-563-565-567-868-251530-
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-
255 AM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...NORTHEAST WINDS 15 TO 25 KT BECOMING EAST TO 30 KT.
CHANCE OF RAIN SHOWERS THIS MORNING...THEN CHANCE OF RAIN SHOWERS
AND SLIGHT CHANCE OF LIGHT FREEZING RAIN THIS AFTERNOON. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT.
.TONIGHT...EAST WINDS TO 30 KT. RAIN SHOWERS WITH A CHANCE OF
LIGHT FREEZING RAIN IN THE EVENING...THEN RAIN SHOWERS AND LIGHT
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
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 IN THE EVENING...THEN CHANCE OF
RAIN SHOWERS AND LIGHT FREEZING RAIN OVERNIGHT. WAVES 1 TO 3 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 2 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-251530-
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-
255 AM CDT SAT MAR 25 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...NORTHEAST WINDS TO 30 KT BECOMING EAST. AREAS OF FOG.
RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES 5 TO 8 FT
OCCASIONALLY TO 10 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11
FT.
.TONIGHT...EAST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT. AREAS
OF FOG. RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS IN THE
EVENING...THEN RAIN SHOWERS LIKELY WITH SLIGHT CHANCE OF
THUNDERSTORMS OVERNIGHT. 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.
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.

$$

LMZ761-251530-
MAFOR 2509/
MICHIGAN NORTH 12130 11240 11140 11240 13246. CHANCE OF RAIN
SHOWERS TODAY. CHANCE OF LIGHT FREEZING RAIN LATE TONIGHT. WAVES
5 TO 8 FT OCCASIONALLY TO 10 FT TODAY. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT TONIGHT.

MICHIGAN SOUTH 12146 14246 12236. WAVES 5 TO 8 FT OCCASIONALLY TO
10 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO 11 FT TODAY. WAVES 5
TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 7 FT OCCASIONALLY
TO 9 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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