Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 231942
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
242 PM CDT FRI SEP 23 2016

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 HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG
WITH THE AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES
WHICH WILL OCCASIONALLY BE ENCOUNTERED.

.SYNOPSIS...HIGH PRESSURE OF 30.3 INCHES IS CENTERED OVER ONTARIO
THIS AFTERNOON AND WILL MOVE TO THE EASTERN GREAT LAKES OVER THE
WEEKEND. LOW PRESSURE OF 29.8 INCHES IS OVER THE CENTRAL PLAINS
THIS AFTERNOON AND WILL LIFT TO THE NORTHERN PLAINS
SATURDAY...THEN SHIFT SLOWLY EAST TO LAKE SUPERIOR LATE MONDAY
INTO TUESDAY. HIGH PRESSURE OF 30.2 INCHES WILL BUILD ACROSS
PORTIONS OF THE MISSISSIPPI VALLEY MIDWEEK.

LMZ261-362-364-366-563-565-567-868-240315-
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-
242 PM CDT FRI SEP 23 2016

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING SOUTHEAST 10 TO 15
KT. WAVES 2 TO 4 FT.
.SATURDAY...SOUTHEAST WINDS 10 TO 15 KT BECOMING EAST 5 TO 10 KT.
WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST 15 TO
25 KT. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO
7 FT.
.SUNDAY...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH 15 TO 25 KT.
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KT BECOMING SOUTHWEST.
SHOWERS IN THE EVENING...THEN SHOWERS LIKELY OVERNIGHT. WAVES
4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY...WEST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 4 TO 6 FT
OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...WEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...WEST WINDS 15 TO 25 KT. CHANCE OF SHOWERS. WAVES 2 TO
4 FT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 15 KT BECOMING WEST. WAVES
1 TO 2 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240315-
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-
242 PM CDT FRI SEP 23 2016

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...NORTHEAST WINDS 10 TO 20 KT BECOMING EAST. SLIGHT
CHANCE OF SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.SATURDAY...EAST WINDS 10 TO 20 KT DIMINISHING TO 10 TO 15 KT.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO 1 TO 3 FT.
.SATURDAY NIGHT...EAST WINDS 10 TO 20 KT BECOMING SOUTHEAST 15 TO
25 KT. WAVES 1 TO 3 FT BUILDING TO 3 TO 5 FT OCCASIONALLY TO
7 FT.
.SUNDAY...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH 15 TO 25 KT.
CHANCE OF SHOWERS IN THE AFTERNOON. WAVES 4 TO 6 FT OCCASIONALLY
TO 8 FT.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 20 KT VEERING TO WEST 15 TO
25 KT. SHOWERS LIKELY IN THE EVENING...THEN CHANCE OF SHOWERS
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...WEST WINDS TO 30 KT. CHANCE OF SHOWERS. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KT DIMINISHING TO 10 TO
20 KT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.

$$

LMZ761-240315-
MAFOR 2321/
MICHIGAN NORTH 12120 12220 13310 11200. WAVES 2 TO 4 FT TONIGHT.
WAVES SUBSIDING TO 2 TO 4 FT SATURDAY.

MICHIGAN SOUTH 12120 14220 11220 11110. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT TONIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT SUBSIDING TO 1 TO 3 FT SATURDAY.

$$

BMD

EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT
WEATHER.GOV/LOT/GLFTABLE (ALL LOWER CASE)

GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT
WEATHER.GOV/GREATLAKES (ALL LOWER CASE)


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