Great Lakes Forecast
Issued by NWS

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881
FZUS63 KLOT 160243
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
843 PM CST WED FEB 15 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 29.3 INCHES OFF THE SOUTHERN NEW
ENGLAND COAST WILL DEEPEN TO 28.7 INCHES THURSDAY AS IT LIFTS
ACROSS THE CANADIAN MARITIME PROVINCES. MEANWHILE...A RIDGE OF
HIGH PRESSURE AVERAGING 30.1 INCHES ACROSS THE MISSISSIPPI
VALLEY WILL MOVE TO THE WESTERN GREAT LAKES BY THURSDAY MORNING
AND TO THE EASTERN GREAT LAKES FRIDAY. LOW PRESSURE OF 29.2
INCHES WILL MOVE ACROSS SASKATCHEWAN FRIDAY TO JAMES BAY SATURDAY
EVENING...WITH THE TRAILING COLD FRONT MOVING ACROSS THE LAKE.
ANOTHER HIGH PRESSURE AVERAGING 30.1 INCHES WILL MOVE ACROSS THE
WESTERN GREAT LAKES ON SUNDAY. THE HIGH WILL SHIFT EAST ON MONDAY
AS LOW PRESSURE APPROACHES FROM THE PLAINS.

LMZ261-362-364-366-563-565-160900-
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-
843 PM CST WED FEB 15 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TONIGHT...NORTHWEST WINDS 15 TO 20 KT BECOMING NORTH 10
TO 20 KT. SLIGHT CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT.
.THURSDAY...NORTH WINDS 10 TO 15 KT BECOMING VARIABLE 5 TO 10 KT
AND THEN SOUTHEAST IN THE AFTERNOON. WAVES 1 TO 3 FT SUBSIDING TO
1 FT OR LESS.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH
10 TO 20 KT. WAVES 1 TO 3 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.SATURDAY...WEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SATURDAY NIGHT...WEST WINDS 10 TO 15 KT. WAVES 1 TO 2 FT.
.SUNDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 5 TO 10 KT.
WAVES 1 TO 2 FT.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-160900-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 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 PENTWATER TO MANISTEE MI 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-
843 PM CST WED FEB 15 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TONIGHT...NORTHWEST WINDS 10 TO 20 KT BECOMING NORTH.
SLIGHT CHANCE OF SNOW SHOWERS. WAVES 3 TO 5 FT OCCASIONALLY TO
7 FT SUBSIDING TO 2 TO 4 FT.
.THURSDAY...NORTH WINDS 10 TO 15 KT VEERING TO SOUTHEAST 10 TO
20 KT. WAVES 2 TO 4 FT.
.THURSDAY NIGHT...SOUTHEAST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY...SOUTH WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.FRIDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.SATURDAY...SOUTHWEST WINDS 10 TO 20 KT BECOMING WEST. WAVES 2 TO
4 FT.
.SATURDAY NIGHT...NORTHWEST WINDS 10 TO 15 KT. WAVES 1 TO 3 FT.
.SUNDAY...NORTHWEST WINDS 5 TO 10 KT BACKING TO SOUTH. WAVES 1 TO
2 FT.
.MONDAY...SOUTHEAST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
CHANCE OF RAIN SHOWERS. WAVES 2 TO 4 FT.

$$
LMZ761-160900-
MAFOR 1604/
MICHIGAN NORTH 10720 12820 12810 11200 13310. WAVES 3 TO 5 FT
OCCASIONALLY TO 7 FT SUBSIDING TO 2 TO 4 FT OVERNIGHT. WAVES 1 TO
3 FT THURSDAY AND THURSDAY EVENING.

MICHIGAN SOUTH 11720 11820 11810 11100 13310 11320. WAVES 3 TO 5
FT OCCASIONALLY TO 7 FT OVERNIGHT. WAVES 2 TO 4 FT THURSDAY.
WAVES 1 TO 3 FT THURSDAY EVENING.

$$

RATZER

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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