Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 131424
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
824 AM CST MON FEB 13 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...HIGH PRESSURE OF 30.5 INCHES OVER THE MISSISSIPPI
VALLEY WILL WEAKEN AND MOVE SOUTH OF THE LAKE TODAY. LOW PRESSURE
OF 29.4 INCHES WILL MOVE SOUTHEAST FROM NORTHERN MANITOBA TODAY
TO SOUTHEASTERN ONTARIO BY TUESDAY AFTERNOON. A COLD FRONT
TRAILING FROM THIS LOW WILL MOVE ACROSS THE LAKE TUESDAY
AFTERNOON. THE LOW WILL DEEPEN AS IT SLOWLY MOVES TO THE NEW
ENGLAND COAST WEDNESDAY NIGHT. A WEAK HIGH PRESSURE AVERAGING
29.7 INCHES WILL PASS OVER THE LAKE WEDNESDAY NIGHT INTO EARLY
THURSDAY.

LMZ261-362-364-366-563-565-567-868-132100-
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-
824 AM CST MON FEB 13 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST TO 30
KT THIS AFTERNOON. WAVES 2 TO 4 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTHWEST WINDS TO 30 KT BECOMING WEST 15 TO 25 KT.
SLIGHT CHANCE OF SNOW OVERNIGHT. WAVES 4 TO 6 FT OCCASIONALLY TO
8 FT.
.TUESDAY...WEST WINDS TO 30 KT. CHANCE OF SNOW IN THE MORNING...
THEN CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KT. GALE FORCE WINDS TO
35 KT POSSIBLE IN THE EVENING. CHANCE OF SNOW SHOWERS. WAVES 5
TO 8 FT OCCASIONALLY TO 10 FT.
.WEDNESDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS.
WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.WEDNESDAY NIGHT...NORTH WINDS 15 TO 25 KT. CHANCE OF SNOW
SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO
4 FT OVERNIGHT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING SOUTHWEST.
WAVES 1 TO 3 FT SUBSIDING TO 1 TO 2 FT IN THE AFTERNOON.
.FRIDAY...SOUTHEAST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-132100-
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-
824 AM CST MON FEB 13 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST 15 TO
25 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TONIGHT...WEST WINDS 15 TO 25 KT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.TUESDAY...WEST WINDS TO 30 KT. WAVES BUILDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.TUESDAY NIGHT...NORTHWEST WINDS TO 30 KT. WAVES 6 TO 9 FT
OCCASIONALLY TO 11 FT.
.WEDNESDAY...NORTHWEST WINDS TO 30 KT. CHANCE OF SNOW SHOWERS.
WAVES 5 TO 8 FT OCCASIONALLY TO 10 FT SUBSIDING TO 4 TO 7 FT
OCCASIONALLY TO 9 FT IN THE AFTERNOON.
.WEDNESDAY NIGHT...NORTHWEST WINDS 15 TO 25 KT. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY TO 7 FT
OVERNIGHT.
.THURSDAY...NORTHWEST WINDS 10 TO 15 KT BACKING TO SOUTHWEST.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT IN THE AFTERNOON.
.FRIDAY...SOUTH WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.

$$
LMZ761-132100-
MAFOR 1316/
MICHIGAN NORTH 11620 11530 13540 13630. WAVES 2 TO 4 FT BUILDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT TODAY AND TO 4 TO 6 FT
OCCASIONALLY TO 8 FT TONIGHT.

MICHIGAN SOUTH 11620 14530 13630. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT.

$$

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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