Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 161949
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
249 PM CDT THU MAR 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...HIGH PRESSURE OF 30.5 INCHES CENTERED OVER THE GULF
COAST AND EXTENDING THROUGH THE WESTERN GREAT LAKES WILL REACH THE
CAROLINAS FRIDAY. LOW PRESSURE OF 29.7 INCHES OVER SOUTHERN
SASKATCHEWAN WILL TRAVEL ACROSS SOUTHERN CANADA FRIDAY WHILE
WEAKENING TO 29.8 INCHES. THE LOW WILL AVERAGE 29.9 INCHES AS IT
DIVES SOUTHEAST OVER THE GREAT LAKES AND THEN WILL MOVE OVER THE
ATLANTIC SATURDAY. HIGH PRESSURE OF 30.4 INCHES WILL SPREAD ACROSS
THE WESTERN LAKES AGAIN SATURDAY NIGHT INTO EARLY SUNDAY. A LARGE
SURFACE LOW WILL DEEPEN TO AROUND 28.9 INCHES AS IT REACHES
HUDSON BAY SUNDAY NIGHT AND ITS COLD FRONT WILL PASS OVER THE LAKE
MONDAY.

LMZ261-362-364-366-563-565-567-868-170330-
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-
249 PM CDT THU MAR 16 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING SOUTH THIS
EVENING...THEN BECOMING SOUTHEAST TO 30 KT LATE. CHANCE OF SNOW
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 6
FT OCCASIONALLY TO 8 FT.
.FRIDAY...SOUTHEAST WINDS TO 30 KT BECOMING SOUTH 15 TO 25 KT.
SNOW AND SLIGHT CHANCE OF LIGHT FREEZING RAIN IN THE MORNING...
THEN SNOW LIKELY, CHANCE OF RAIN AND LIGHT FREEZING RAIN IN THE
AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.FRIDAY NIGHT...SOUTH WINDS 10 TO 20 KT BECOMING WEST TO 30 KT
AFTER MIDNIGHT...AND THEN BECOMING NORTHWEST LATE. SNOW SHOWERS
LIKELY WITH A CHANCE OF RAIN SHOWERS IN THE EVENING...THEN CHANCE
OF SNOW AND RAIN SHOWERS OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY
TO 7 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT.
.SATURDAY...NORTHWEST WINDS TO 30 KT BECOMING NORTH 10 TO 20 KT
IN THE AFTERNOON. CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES 4
TO 6 FT OCCASIONALLY TO 8 FT SUBSIDING TO 3 TO 5 FT OCCASIONALLY
TO 7 FT.
.SATURDAY NIGHT...NORTH WINDS 10 TO 20 KT DIMINISHING TO 10 TO
15 KT. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 2 FT.
.SUNDAY...SOUTH WINDS 10 TO 15 KT INCREASING TO 15 TO 25 KT IN
THE AFTERNOON. WAVES 1 TO 2 FT BUILDING TO 2 TO 4 FT.
.SUNDAY NIGHT...SOUTH WINDS TO 30 KT. RAIN SHOWERS LIKELY WITH A
CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...WEST WINDS 15 TO 25 KT BECOMING NORTHWEST 10 TO 20 KT.
CHANCE OF RAIN AND SNOW SHOWERS. WAVES 2 TO 4 FT SUBSIDING TO
1 TO 3 FT.
.TUESDAY...NORTHWEST WINDS TO 30 KT BECOMING NORTH 15 TO 25 KT.
CHANCE OF SNOW SHOWERS. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-170330-
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-
249 PM CDT THU MAR 16 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST...AND THEN
INCREASING TO 30 KT OVERNIGHT. SLIGHT CHANCE OF SNOW THIS
EVENING...THEN CHANCE OF SNOW WITH POSSIBLE RAIN AND FREEZING RAIN
OVERNIGHT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO
6 FT OCCASIONALLY TO 8 FT.
.FRIDAY...SOUTHEAST WINDS TO 30 KT BECOMING SOUTHWEST 15 TO
25 KT IN THE AFTERNOON. RAIN LIKELY WITH POCKETS OF SNOW AND
FREEZING RAIN IN THE MORNING...THEN CHANCE OF RAIN IN THE
AFTERNOON. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO
5 FT OCCASIONALLY TO 7 FT.
.FRIDAY NIGHT...WEST WINDS 15 TO 25 KT BECOMING NORTHWEST TO
30 KT. CHANCE OF RAIN SHOWERS IN THE EVENING. WAVES 2 TO 4 FT
BUILDING TO 4 TO 7 FT OCCASIONALLY TO 9 FT.
.SATURDAY...NORTHWEST WINDS TO 30 KT DIMINISHING TO 15 TO 25 KT.
CHANCE OF SNOW SHOWERS IN THE MORNING. WAVES 4 TO 7 FT
OCCASIONALLY TO 9 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH
10 TO 15 KT. WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT SUBSIDING TO
1 TO 3 FT.
.SUNDAY...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH 15 TO 25 KT
IN THE AFTERNOON. WAVES 1 TO 2 FT BUILDING TO 1 TO 3 FT.
.SUNDAY NIGHT...SOUTH WINDS 15 TO 25 KT. RAIN SHOWERS LIKELY.
WAVES 3 TO 5 FT OCCASIONALLY TO 7 FT.
.MONDAY...WEST WINDS 10 TO 20 KT BECOMING NORTHWEST. CHANCE OF
RAIN SHOWERS. WAVES 2 TO 4 FT.
.TUESDAY...NORTHWEST WINDS TO 30 KT BECOMING NORTH 15 TO 25 KT.
WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.

$$

LMZ761-170330-
MAFOR 1621/
MICHIGAN NORTH 11520 12420 11430 11340 12347 11447. CHANCE OF
SNOW LATE THIS EVENING. CHANCE OF RAIN FRIDAY AFTERNOON. WAVES 3
TO 5 FT OCCASIONALLY TO 7 FT BUILDING TO 4 TO 6 FT OCCASIONALLY
TO 8 FT TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO
3 TO 5 FT OCCASIONALLY TO 7 FT FRIDAY.


MICHIGAN SOUTH 11520 12420 11430 11447 11347 11446 11440. CHANCE
OF SNOW LATE THIS EVENING. CHANCE OF RAIN FRIDAY. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT BUILDING TO 4 TO 6 FT OCCASIONALLY TO 8 FT
TONIGHT. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING TO 3 TO 5
FT OCCASIONALLY TO 7 FT FRIDAY.

$$


JEE

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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