Great Lakes Forecast
Issued by NWS

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617
FZUS63 KLOT 270751
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
251 AM CDT MON MAR 27 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 OVER THE CENTRAL GREAT
LAKES WILL CONTINUE TO WESTERN QUEBEC BY THIS EVENING. A SECOND
LOW PRESSURE OF 29.7 INCHES OVER THE SOUTHERN PLAINS WILL TRACK
NORTHEAST TO THE MIDDLE MISSISSIPPI VALLEY THIS AFTERNOON AND THEN
UP TO THE OHIO VALLEY TONIGHT INTO TUESDAY...SLOWLY WEAKENING AS
IT DOES SO. HIGH PRESSURE AVERAGING 30.3 INCHES CENTERED OVER
ONTARIO WILL THEN BUILD INTO THE GREAT LAKES REGION TUESDAY AND
WEDNESDAY. LOW PRESSURE OF 29.6 INCHES WILL DEVELOP OVER THE
SOUTHERN PLAINS WEDNESDAY...AND THEN SLOWLY LIFT NORTHEAST TOWARDS
THE SOUTHERN GREAT LAKES BY THE END OF THE WORK WEEK.

LMZ261-362-364-366-563-565-567-868-271530-
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-
251 AM CDT MON MAR 27 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

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

.TODAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. AREAS OF
DENSE FOG THIS MORNING. WAVES 1 TO 3 FT.
.TONIGHT...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...NORTHEAST WINDS 10 TO 20 KT BECOMING NORTH 15 TO
25 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 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 INCREASING TO 15 TO
25 KT. WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT BECOMING EAST
10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...EAST WINDS 15 TO 25 KT. CHANCE OF RAIN AND SNOW.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.FRIDAY...NORTHEAST WINDS TO 30 KT. CHANCE OF RAIN AND SNOW.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-271530-
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-
251 AM CDT MON MAR 27 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

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

.TODAY...NORTHWEST WINDS 10 TO 15 KT BECOMING NORTH. AREAS OF
DENSE FOG THIS MORNING. SLIGHT CHANCE OF RAIN SHOWERS THIS
AFTERNOON. WAVES 1 TO 3 FT.
.TONIGHT...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS IN THE EVENING...THEN SLIGHT CHANCE OF
RAIN SHOWERS OVERNIGHT. WAVES BUILDING TO 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.TUESDAY...NORTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TUESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.WEDNESDAY...NORTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY NIGHT...NORTHEAST WINDS 15 TO 25 KT BECOMING EAST.
CHANCE OF RAIN. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY...EAST WINDS TO 30 KT. RAIN WITH SNOW LIKELY. WAVES
4 TO 7 FT OCCASIONALLY TO 9 FT.
.FRIDAY...NORTHEAST WINDS TO 30 KT BECOMING NORTH. RAIN LIKELY.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.

$$

LMZ761-271530-
MAFOR 2709/
MICHIGAN NORTH 12713 19714 11700 11710 11810 12820 11830. WAVES 1
TO 3 FT TODAY. WAVES BUILDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
TONIGHT.

MICHIGAN SOUTH 12713 19714 12800 11810 12820 11830. CHANCE OF
RAIN SHOWERS LATE TONIGHT. WAVES 1 TO 3 FT TODAY. WAVES BUILDING
TO 4 TO 6 FT OCCASIONALLY TO 8 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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