Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 161346
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
846 AM CDT TUE MAY 16 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 29.4 INCHES WILL MOVE FROM NEBRASKA
THIS MORNING TO WESTERN LAKE SUPERIOR BY LATE THIS EVENING. A WARM
FRONT EXTENDING EAST FROM THIS LOW WILL LIFT NORTHWARD ACROSS
LAKE MICHIGAN BY THIS AFTERNOON. ANOTHER LOW OF 29.3 INCHES WILL
DEVELOP OVER THE PLAINS BY EARLY WEDNESDAY AND WILL ALSO TRACK TO
THE NORTHERN LAKES BY THURSDAY MORNING...SLIGHTLY WEAKENING TO
29.5 INCHES AS IT DOES SO. THIS LOW WILL CONTINUE TO FILL AS IT
MOVES INTO QUEBEC THURSDAY EVENING WHILE SENDING A COLD FRONT
THROUGH THE WESTERN LAKES. HIGH PRESSURE OF 30.4 INCHES WILL BUILD
ACROSS THE NORTHERN LAKES ON FRIDAY.

LMZ261-362-364-366-563-565-567-868-162130-
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-
846 AM CDT TUE MAY 16 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...SOUTHEAST WINDS 10 TO 20 KT BECOMING SOUTH 15 TO
25 KT EARLY THIS AFTERNOON...AND THEN INCREASING TO 30 KT LATE
THIS AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. WAVES 1 TO 3 FT BUILDING TO 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.TONIGHT...SOUTH WINDS TO 30 KT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS LATE. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY...SOUTH WINDS 20 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY NIGHT...SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.THURSDAY...SOUTHWEST WINDS 15 TO 25 KT VEERING TO NORTHWEST.
CHANCE OF SHOWERS IN THE MORNING...THEN CHANCE OF RAIN SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT.
.THURSDAY NIGHT...NORTH WINDS TO 30 KT BECOMING NORTHEAST 15 TO
25 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.FRIDAY...NORTHEAST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.SATURDAY...EAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-162130-
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-
846 AM CDT TUE MAY 16 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...SOUTH WINDS 10 TO 20 KT INCREASING TO 15 TO 25
KT BY MIDDAY, AND THEN TO 30 KT THIS AFTERNOON. WAVES 1 TO 3 FT
BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.TONIGHT...SOUTH WINDS TO 30 KT DIMINISHING TO 20 TO 25 KT LATE
THIS EVENING. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY...SOUTH WINDS 20 TO 25 KT WITH OCCASIONAL GUSTS TO 30
KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.WEDNESDAY NIGHT...SOUTH WINDS 20 TO 25 KT WITH OCCASIONAL GUSTS
TO 30 KT. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.THURSDAY...SOUTHWEST WINDS TO 30 KT BECOMING WEST 15 TO 25 KT IN
THE AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT.
.THURSDAY NIGHT...NORTH WINDS 15 TO 25 KT INCREASING TO 30 KT
BY LATE EVENING. WAVES BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8
FT.
.FRIDAY...NORTHEAST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST 15 TO
25 KT. CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT.

$$
LMZ761-162130-
MAFOR 1615/
MICHIGAN NORTH 11320 11430 14440 11440 11430. CHANCE OF SHOWERS
AND THUNDERSTORMS LATE THIS MORNING. WAVES 1 TO 3 FT BUILDING TO 4
TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES 4 TO 7 FT OCCASIONALLY
TO 9 FT TONIGHT AND WEDNESDAY MORNING.

MICHIGAN SOUTH 11420 11430 12440 14430. WAVES 1 TO 3 FT BUILDING
TO 4 TO 6 FT OCCASIONALLY TO 8 FT TODAY. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT TONIGHT AND WEDNESDAY MORNING.


$$


KJB

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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