Great Lakes Forecast
Issued by NWS

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848
FZUS63 KLOT 280150
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
850 PM CDT SAT MAY 27 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 29.6 INCHES OVER NORTHWEST ONTARIO
WILL SLOWLY DRIFT EAST THROUGH MONDAY. ANOTHER LOW OF 29.7 INCHES
OVER THE SOUTHERN PLAINS...WILL LIFT INTO THE CENTRAL GREAT LAKES
REGION SUNDAY THEN MERGE WITH THE NORTHERN LOW OVER ONTARIO
MONDAY. THE LOW WILL LIFT ACROSS JAMES BAY TUESDAY TO NORTHERN
QUEBEC WEDNESDAY. MEANWHILE... HIGH PRESSURE OF 30.2 INCHES WILL
BUILD ACROSS THE NORTHERN PLAINS TUESDAY AND SHIFT TO THE OHIO
VALLEY THURSDAY.

LMZ261-362-364-366-563-565-567-868-280800-
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-
850 PM CDT SAT MAY 27 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...SOUTH WINDS 10 TO 15 KT BECOMING SOUTHEAST.
CHANCE OF SHOWERS OVERNIGHT. WAVES 1 TO 2 FT.
.SUNDAY...EAST WINDS AROUND 10 KT VEERING TO NORTH. SHOWERS
LIKELY WITH A CHANCE OF THUNDERSTORMS. WAVES 1 FT OR LESS.
.SUNDAY NIGHT...SOUTH WINDS 10 TO 15 KT BECOMING WEST 10 TO 20
KT. WAVES 1 TO 3 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT. CHANCE OF RAIN SHOWERS IN
THE AFTERNOON. WAVES 1 TO 3 FT.
.MONDAY NIGHT...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO
25 KT. WAVES 2 TO 4 FT.
.TUESDAY...SOUTHWEST WINDS 15 TO 25 KT BECOMING WEST. CHANCE OF
RAIN SHOWERS IN THE MORNING. WAVES 3 TO 5 FT OCCASIONALLY TO 7
FT.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...WEST WINDS 10 TO 20 KT BECOMING SOUTHWEST. WAVES 2
TO 4 FT.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-280800-
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-
850 PM CDT SAT MAY 27 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...SOUTHEAST WINDS 10 TO 15 KT. CHANCE OF
SHOWERS. WAVES 1 TO 2 FT.
.SUNDAY...EAST WINDS 10 TO 15 KT BECOMING VARIABLE 5 TO 10 KT...
THEN NORTHWEST 10 TO 15 KT LATE. CHANCE OF SHOWERS AND
THUNDERSTORMS. WAVES 1 TO 2 FT.
.SUNDAY NIGHT...WEST WINDS INCREASING TO 10 TO 20 KT. WAVES 1 TO
3 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT. CHANCE OF SHOWERS IN THE
AFTERNOON. WAVES 2 TO 4 FT.
.MONDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.TUESDAY NIGHT...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.WEDNESDAY...WEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.

$$
LMZ761-280800-
MAFOR 2803/
MICHIGAN NORTH 12410 11310 12216 11116 11900 11410. CHANCE OF
SHOWERS OVERNIGHT. CHANCE OF THUNDERSTORMS SUNDAY. WAVES 1 TO 2
FT.

MICHIGAN SOUTH 13310 12210 11900 11710 11610. CHANCE OF SHOWERS.
CHANCE OF THUNDERSTORMS SUNDAY. WAVES 1 TO 2 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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