Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 171344
GLFLM

OPEN LAKE FORECAST FOR LAKE MICHIGAN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
844 AM CDT SUN MAY 17 2015

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...LOW PRESSURE OF 29.5 INCHES OVER THE EASTERN DAKOTAS
WILL MOVE TO NORTHERN MINNESOTA TONIGHT WHILE DEEPENING TO 29.4
INCHES. THE LOW WILL THEN WEAKEN AS IT MOVES EAST ACROSS LAKE
SUPERIOR AND TO QUEBEC AS A 29.7 INCH LOW BY TUESDAY MORNING. HIGH
PRESSURE OF 30.6 INCHES OVER THE CANADIAN PRAIRIES MONDAY WILL
BUILD SOUTH INTO THE NORTHERN PLAINS MONDAY NIGHT...THEN SPREAD
EAST INTO THE WESTERN LAKES TUESDAY IN THE WAKE OF THE LOW. THE
HIGH WILL MOVE VERY LITTLE THROUGH THE REMAINDER OF THE
WEEK...REPOSITIONING ITSELF OVER THE GREAT LAKES BY FRIDAY AND
SLOWLY WEAKENING TO 30.3 INCHES.

LMZ261-362-364-366-563-565-567-669-868-870-172145-
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 SHEBOYGAN TO PORT WASHINGTON WI 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-
844 AM CDT SUN MAY 17 2015

PORT WASHINGTON WI TO WHITEHALL MI NORTH

...DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT MONDAY...

.REST OF TODAY...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH 15 TO
20 KT. AREAS OF DENSE FOG. CHANCE OF SHOWERS AND THUNDERSTORMS
THIS AFTERNOON. WAVES 1 TO 2 FT BUILDING TO 3 TO 5 FT
OCCASIONALLY TO 7 FT.
.TONIGHT...SOUTH WINDS 10 TO 20 KT. AREAS OF DENSE FOG. CHANCE OF
SHOWERS AND THUNDERSTORMS. WAVES 3 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT INCREASING TO 15 TO 25 KT.
AREAS OF FOG IN THE MORNING. WAVES 4 TO 6 FT OCCASIONALLY TO 8 FT.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KT. WAVES SUBSIDING TO 3 TO 5
FT OCCASIONALLY TO 7 FT.
.TUESDAY...NORTHWEST WINDS 20 TO 25 KT WITH GUSTS TO 30 KT BECOMING
NORTH. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KT BECOMING NORTHWEST 10 TO
15 KT. WAVES SUBSIDING TO 2 TO 4 FT.
.WEDNESDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST 10 TO
20 KT. WAVES 1 TO 3 FT.
.THURSDAY...WEST WINDS 10 TO 15 KT BECOMING SOUTHWEST. WAVES 1 TO
2 FT.

$$

LMZ080-671-673-675-777-779-872-874-876-878-172145-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 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 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-
844 AM CDT SUN MAY 17 2015

PORT WASHINGTON WI TO WHITEHALL MI SOUTH

...DENSE FOG ADVISORY IN EFFECT UNTIL 3 PM CDT THIS AFTERNOON...

.REST OF TODAY...SOUTHEAST WINDS 10 TO 15 KT BECOMING SOUTH AND
INCREASING TO 15 TO 25 KT. AREAS OF DENSE FOG. CHANCE OF SHOWERS
AND THUNDERSTORMS THIS AFTERNOON. WAVES 1 TO 2 FT BUILDING TO 2
TO 4 FT THIS AFTERNOON.
.TONIGHT...SOUTH WINDS 10 TO 20 KT BECOMING SOUTHWEST. CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING. AREAS OF FOG. WAVES
2 TO 4 FT.
.MONDAY...SOUTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT SUBSIDING
TO 1 TO 3 FT.
.MONDAY NIGHT...WEST WINDS 15 TO 25 KT. WAVES 2 TO 4 FT BUILDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT.
.TUESDAY...NORTHWEST WINDS 15 TO 25 KT BECOMING NORTH. WAVES 4 TO
7 FT OCCASIONALLY TO 9 FT.
.TUESDAY NIGHT...NORTH WINDS 10 TO 20 KT. WAVES SUBSIDING TO 2 TO
4 FT.
.WEDNESDAY...NORTHWEST WINDS 10 TO 20 KT. WAVES 2 TO 4 FT.
.THURSDAY...WEST WINDS 5 TO 10 KT BECOMING SOUTHWEST 10 TO 15 KT.
WAVES 1 TO 2 FT.

$$
LMZ761-172145-
MAFOR 1716/
MICHIGAN NORTH 11314 15424 11523. CHANCE OF SHOWERS AND
THUNDERSTORMS THIS AFTERNOON AND EVENING. WAVES 1 TO 2 FT BUILDING
TO 3 TO 5 FT OCCASIONALLY TO 7 FT THIS AFTERNOON. WAVES 3 TO 6 FT
OCCASIONALLY TO 8 FT TONIGHT AND MONDAY MORNING.

MICHIGAN SOUTH 11314 12434 13423 11523 11520. CHANCE OF SHOWERS
AND THUNDERSTORMS THIS AFTERNOON AND EVENING. WAVES 1 TO 2 FT
BUILDING TO 2 TO 4 FT THIS AFTERNOON. WAVES 2 TO 4 FT TONIGHT AND
MONDAY MORNING.

$$

KJB



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